A method for processing fluororubber cushioning pads

Abstract

This invention discloses a method for processing a fluororubber buffer pad. The fluororubber buffer pad includes at least two fluororubber surface layers and at least one fluororubber expanded layer disposed between the two fluororubber surface layers. When there are two or more fluororubber expanded layers, each fluororubber expanded layer is connected to the other by a fluororubber adhesive layer. The processing steps of the fluororubber buffer pad are as follows: (1) fluororubber preparation; (2) making the fluororubber adhesive layer; (3) making the fluororubber surface layer; (4) making the fluororubber expanded layer; (5) loading the material roll into the machine; (6) material bonding; (7) material cutting. The fluororubber buffer pad of this invention has excellent high temperature resistance and high pressure resistance, and has a long service life. It can replace traditional kraft paper and improve the efficiency and product quality of CCL & PCB manufacturing process.

Description

Technical Field

[0001] This invention relates to the technical field of cushioning pads, and specifically to a method for processing fluororubber cushioning pads. Background Technology

[0002] In the field of high-precision and high-requirement electronic material manufacturing, such as CCL (copper clad laminate) and PCB (printed circuit board), kraft paper has traditionally been widely used as a cushioning material. Its application runs through the entire process of high-temperature and high-pressure lamination. Kraft paper effectively isolates the mechanical impact and thermal stress that may be generated during the lamination process, ensuring that the copper clad laminate and circuit board can remain flat and undamaged under complex process conditions.

[0003] With the increasing trend towards thinner and lighter electronic products and higher integration, more stringent requirements have been placed on the manufacturing precision and material performance of CCL and PCB. However, kraft paper has problems such as insufficient resistance to high temperature and high pressure and a short service life. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a method for processing fluororubber cushioning pads. The fluororubber cushioning pads have excellent high temperature resistance, high pressure resistance, and long service life. They can replace traditional kraft paper, improve the efficiency and product quality of CCL & PCB manufacturing processes. The fluororubber formulation is a coatable adhesive formulation with binary fluororubber FKM as the matrix and ethyl acetate as the solvent. Through this fluororubber formulation, fluororubber is obtained with properties such as high temperature resistance, oil and chemical corrosion resistance, low compression set, and aging resistance.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A method for processing a fluororubber cushioning pad, wherein the fluororubber cushioning pad comprises at least two fluororubber surface layers and at least one fluororubber expanded layer disposed between the two fluororubber surface layers. When there are two or more fluororubber expanded layers, each fluororubber expanded layer is connected to the others by a fluororubber adhesive layer. The processing steps of the fluororubber cushioning pad are as follows: (1) Fluororubber preparation: Fluororubber solution is prepared by dissolving binary fluororubber FKM with ethyl acetate in a ratio of 1:1.0 to 2. The solution also contains the following components based on 100 parts of binary fluororubber FKM: 20 to 60 parts of thermal conductive agent, 3 to 6 parts of active magnesium oxide, 10 to 50 parts of calcium oxide, 10 to 40 parts of glass microspheres, 5 to 20 parts of matting powder, 1 to 5 parts of iron oxide red, 1 to 5 parts of vulcanizing agent and 0.25 to 1.25 parts of crosslinking agent. The raw materials are prepared according to the specified amounts and then mixed with the fluororubber solution to obtain fluororubber. The fluororubber is then added to the processing equipment of the corresponding layer materials for later use. (2) Making the fluororubber adhesive layer: Take the first fabric and apply the fluororubber from step (1) to the first fabric for impregnation. After each impregnation treatment, heat treatment is required. Then roll it up to obtain the fluororubber adhesive layer for later use. (3) Making the fluororubber surface layer: Take the second fabric, apply the fluororubber from step (1) to at least one side of the second fabric, then heat it, and then roll it up to obtain the fluororubber surface layer for later use. (4) Making the fluororubber expanded layer: Take the third fabric and apply the fluororubber from step (1) to the third fabric for impregnation. After each impregnation treatment, heat treatment is required. Then roll it up to obtain the fluororubber expanded layer for later use. (5) Loading the rolls: The rolls of fluororubber adhesive layer from step (2), fluororubber surface layer from step (3), and fluororubber expanded layer from step (4) are respectively placed at the feeding end of the equipment. The fluororubber adhesive layer, fluororubber surface layer, and fluororubber expanded layer are aligned and stacked according to the structural sequence of the fluororubber buffer pad. When there are two or more fluororubber expanded layers, at least one fluororubber adhesive layer is also required at the feeding end. The fluororubber adhesive layer is placed between the two fluororubber expanded layers. Then, one end of each stacked layer of material is passed through the first traction part of the processing equipment through the composite part of the processing equipment and pre-loaded onto the second traction part of the processing equipment. (6) Material compounding: Start the processing equipment, and through the cooperation of the first traction part and the second traction part of the processing equipment, the superimposed layers of material in step (5) are drawn from the feed end of the compounding part to the processing area of ​​the compounding part at a fixed length, and high temperature compounding is carried out to obtain strip-shaped fluororubber buffer material. (7) Material cutting: The processing equipment conveys the fluororubber buffer material from step (6) to the cutting section of the processing equipment through the second traction part. The cutting section cuts the fluororubber buffer material to obtain the fluororubber buffer pad.

[0006] Further, in step (1), after taking the binary fluororubber FKM and ethyl acetate in proportion, they are mixed at high speed in a mixer for 1.5H to 2H at a stirring speed of 550 to 2000 r / min. Then, the mixture is filtered through a 60 to 120 mesh filter to obtain a fluororubber solution.

[0007] Furthermore, the thermal conductive agent, active magnesium oxide, calcium oxide, glass microspheres, matting powder, iron oxide red, vulcanizing agent, and crosslinking agent are each taken in proportion and mixed. Fluororubber solution is added to a mixer, and while stirring the fluororubber solution, the thermal conductive agent, active magnesium oxide, calcium oxide, glass microspheres, matting powder, iron oxide red, vulcanizing agent, and crosslinking agent are added and mixed. The mixture is stirred for 30-60 minutes at a stirring speed of 550-1000 r / min, and then filtered through a 60-120 mesh filter to obtain fluororubber.

[0008] Further, in step (2), the first fabric is first dip-coated with fluororubber at least once, with a dip-coating speed of 8-10 m / min and a dip-coating thickness of 0.25-0.35 mm. Then, it is dried at least once at a high temperature of 80-130°C for 1-10 min to obtain a fluororubber adhesive layer. The fluororubber adhesive layer is then wound up for later use. The first fabric is a 7628 face fabric with a yarn diameter of 9 μm. The high-temperature drying is carried out in a vertical tunnel oven. The dip-coating process is carried out using a dip-coating machine.

[0009] Further, in step (3), the fluororubber surface layer is uniformly coated on one side of the second fabric with fluororubber, the coating thickness is 0.25-0.5 mm, the coating speed is 8-10 m / min, and it is dried at least once at a high temperature of 80-120℃ for 1-10 min to obtain the fluororubber surface layer, and then the fluororubber surface layer is rolled up for later use; wherein, the second fabric is 7629 fabric with a yarn diameter of 9 μm; the high temperature drying is carried out in a horizontal tunnel oven, and the coating process is carried out using a scraper coating machine.

[0010] Further, in step (4), one side of the third fabric is first dip-coated with fluororubber at least once, with a dip-coating speed of 10-17 m / min and a dip-coating thickness of 0.85-1 mm. Then, it is dried at a high temperature of 80-120°C at least once, with a high-temperature drying time of 1-10 min. The other side of the third fabric is then dip-coated with fluororubber at least once, with a dip-coating speed of 1-10 m / min and a dip-coating thickness of 0.9-1.5 mm. Then, it is dried at a high temperature of 80-120°C at least once, with a high-temperature drying time of 1-10 min, to obtain a fluororubber expanded layer. The fluororubber expanded layer is then wound up for later use. The third fabric is made of expanded glass fiber cloth with a yarn diameter of 6 μm. The high-temperature drying is carried out in a vertical tunnel oven. The dip-coating process is carried out using a dip-coating machine.

[0011] Furthermore, in step (6), a laminating machine is used to perform high-temperature lamination on the stacked layers of materials. The lamination temperature is 200–300°C, the lamination time is 100–500 seconds, and the lamination pressure is 5–25 kg / cm². 2 .

[0012] Furthermore, the thermal conductive agent is at least one of spherical alumina, boron nitride, or zinc oxide.

[0013] Further, the vulcanizing agent is at least one of bisphenol AF, bisphenol S, bisphenol A, bisphenol AP, DCP, and BIPB; the crosslinking agent is at least one of BPP (benzyltriphenylphosphine chloride, CAS 1100-88-5), tetrabutylphosphine chloride, tetrabutylphosphine bromide, and triphenylethylphosphine bromide.

[0014] Furthermore, the other side of the 7629 fabric undergoes a scraping coating treatment. The surface coating material is at least one of polyimide, polypyrrolidone tetramethylimide, polyetherimide, and polyamide-imide. The coating thickness is 0.25–0.5 mm, the scraping speed is 8–10 m / min, and it is dried at least once at a high temperature of 80–120°C for 1–10 min. The fluororubber surface layer is then rolled up for later use. The high-temperature drying is performed using a horizontal tunnel oven, and the scraping treatment is performed using a blade coating machine.

[0015] The beneficial effects of this invention are as follows: 1. Fluororubber cushioning pads have excellent high temperature and high pressure resistance, and a long service life. They can replace traditional kraft paper, improving the efficiency and product quality of CCL & PCB manufacturing processes. After multiple uses, there is no obvious color difference in appearance, good durability, and minimal changes in thickness, length and width dimensions after multiple uses. They also have minimal changes in heating rate and excellent cushioning performance, with expansion and contraction performance superior to kraft paper.

[0016] 2. A fluororubber formulation is used to obtain a fluororubber with high temperature resistance, oil and chemical corrosion resistance, low compression set, and aging resistance. This fluororubber formulation uses binary fluororubber FKM as the matrix and ethyl acetate as the solvent to form a paste. FKM has properties such as high temperature resistance up to 250℃, oil resistance, chemical corrosion resistance, and aging resistance. The fluororubber is dissolved into a paste by ethyl acetate, which can be uniformly coated on the metal surface and form a film after drying. Through the interaction of the vulcanizing agent and the crosslinking agent, the fluororubber molecular chains form a three-dimensional network crosslinked structure, giving the coating elasticity and strength. Activated magnesium oxide is used as an activator, which not only catalyzes the vulcanization reaction, shortens the vulcanization time, but also improves crosslinking. The coating improves uniformity and absorbs hydrogen fluoride (HF) released during vulcanization, preventing HF from corroding metals and degrading rubber. It also enhances heat aging resistance. Calcium oxide, acting as an acid acceptor, is used in conjunction with active MgO to further neutralize HF, improve compression set, and accelerate vulcanization. The thermal conductivity of the coating is improved by a thermally conductive agent, allowing for rapid heat dissipation and preventing heat accumulation that could lead to fluororubber failure under high-speed sealing conditions. The low coefficient of thermal expansion of glass microspheres ensures dimensional stability of the coating. Matte powder reduces surface gloss to achieve a matte appearance and increases the wear resistance and scratch resistance of the coating film. Iron oxide red is used as a colorant to give the coating a reddish-brown appearance. Attached Figure Description

[0017] Figure 1This is a flowchart of the dip-coating process of the present invention.

[0018] Figure 2 This is a flowchart of the scraping process of the present invention.

[0019] Figure 3 This is a composite flow chart of the various material layers of the present invention.

[0020] Figure 4 These are visual comparison images of the usage count detection of this invention.

[0021] Figure 5 This is a point diagram of the thickness test of this invention.

[0022] Figure 6 This is a test data table for thickness testing according to the present invention.

[0023] Figure 7 This is a data table for dimensional detection in this invention.

[0024] Figure 8 This is a data table showing the change in the heating rate of this invention.

[0025] Figure 9 This is a schematic diagram of the buffer quantity test principle of the present invention.

[0026] Figure 10 This is a data table for the buffer quantity test of this invention.

[0027] Figure 11 This is a data comparison table for the expansion and contraction deviation detection of this invention. Detailed Implementation

[0028] The present invention will be further described below with reference to the accompanying drawings: like Figure 1-11As shown, the present invention relates to a method for processing a fluororubber buffer pad. The fluororubber buffer pad includes at least two fluororubber surface layers and at least one fluororubber expanded layer disposed between the two fluororubber surface layers. When there are two or more fluororubber expanded layers, each fluororubber expanded layer is connected to the other by a fluororubber adhesive layer. The processing steps of the fluororubber buffer pad are as follows: (1) Fluororubber formulation: The fluororubber formulation includes binary fluororubber FKM, ethyl acetate, thermal conductive agent, active magnesium oxide, calcium oxide, glass microspheres, matting agent, iron oxide red, vulcanizing agent and crosslinking agent. The fluororubber formulation is a coatable adhesive formulation with binary fluororubber FKM as the matrix and ethyl acetate as the solvent, used for high-temperature corrosion-resistant sealing of metal surfaces. The formulation achieves this through the interaction of the matrix, vulcanization crosslinking and filler. A fluororubber with high temperature resistance, oil and chemical corrosion resistance, low compression set, and aging resistance is obtained. Specifically, the fluororubber formulation is prepared by dissolving binary fluororubber FKM in ethyl acetate at a ratio of 1:1.0-2 to obtain a fluororubber solution. Based on 100 parts of binary fluororubber FKM, the solution also contains the following components: 20-60 parts of thermal conductive agent, 3-6 parts of active magnesium oxide, 10-50 parts of calcium oxide, 10-40 parts of glass microspheres, 5-20 parts of matting agent, 1-5 parts of iron oxide red, 1-5 parts of vulcanizing agent, and 0.25-1.25 parts of crosslinking agent. These raw materials are weighed and mixed, then added to the fluororubber solution to obtain the fluororubber. The FKM in this mixture exhibits high temperature resistance up to 250℃, oil resistance, and chemical corrosion resistance. To enhance its aging resistance, fluororubber is dissolved into a paste using ethyl acetate, allowing it to be uniformly coated onto the metal surface and form a film after drying. The interaction between the vulcanizing agent and the crosslinking agent creates a three-dimensional network crosslinked structure in the fluororubber molecular chains, imparting elasticity and strength to the coating. Activated magnesium oxide acts as an activator, catalyzing the vulcanization reaction, shortening vulcanization time, and improving crosslinking uniformity. It also absorbs hydrogen fluoride (HF) released during vulcanization, preventing HF from corroding the metal and degrading the rubber, while simultaneously improving heat aging resistance. Calcium oxide, acting as an acid acceptor, is used in conjunction with activated MgO to further neutralize HF, improve compression set, and accelerate vulcanization. A thermally conductive agent enhances the coating's thermal conductivity, enabling rapid heat dissipation and preventing heat accumulation that could lead to fluororubber failure under high-speed sealing conditions. The low thermal expansion coefficient of glass microspheres keeps the coating size stable, the matte powder reduces the surface gloss of the coating to obtain a matte appearance, and increases the wear resistance and scratch resistance of the coating film. Iron red is used as a colorant to make the coating reddish-brown. Fluororubber is added to the processing equipment of the corresponding layer materials for later use. (2) Making fluororubber adhesive layer: Take the first fabric, use the fluororubber in step (1) to dip and coat the first fabric, and heat treatment is required after each dip and coat treatment. Then roll it up to obtain fluororubber adhesive layer for later use. (3) Making fluororubber surface layer: Take the second fabric, use the fluororubber in step (1) to scrape and coat at least one side of the second fabric, then heat treatment, then roll it up to obtain fluororubber surface layer for later use.(4) Making the fluororubber expanded layer: Take the third fabric and dip it with the fluororubber from step (1). After each dip coating, heat treatment is required. Then roll it up to obtain the fluororubber expanded layer for later use. (5) Loading the rolls: Place the rolls of the fluororubber adhesive layer from step (2), the fluororubber surface layer from step (3), and the fluororubber expanded layer from step (4) at the feeding end of the equipment. Align and stack the fluororubber adhesive layer, the fluororubber surface layer, and the fluororubber expanded layer according to the structural sequence of the fluororubber buffer pad. When there are two or more fluororubber expanded layers, at least one fluororubber adhesive layer should be placed at the feeding end. The fluororubber adhesive layer should be placed at the second fluororubber expanded layer. Between the layers, then, one end of each layer of material is passed through the first traction part of the processing equipment through the composite part of the processing equipment, and pre-loaded onto the second traction part of the processing equipment; (6) Material composite: Start the processing equipment, and through the cooperation of the first traction part and the second traction part of the processing equipment, pull the stacked material from step (5) from the feed end of the composite part to the processing area of ​​the composite part at a fixed length, and perform high-temperature composite to obtain strip-shaped fluororubber buffer material; (7) Material cutting: The processing equipment conveys the fluororubber buffer material from step (6) to the cutting part of the processing equipment at a fixed length through the second traction part, and cuts the fluororubber buffer material through the cutting part to obtain a fluororubber buffer pad.

[0029] Further, the binary fluororubber FKM is crushed into granules with an irregular shape of 1-5 cm in size. In step (1), the binary fluororubber FKM and ethyl acetate are taken in proportion and mixed in a mixer at high speed for 1.5-2 hours at a stirring speed of 550-2000 r / min. Then, the mixture is filtered through a 60-120 mesh filter to obtain a fluororubber solution. It can only be used after it is fully dissolved and there is no sediment at the bottom of the container. The binary fluororubber FKM is crushed using a crusher.

[0030] Furthermore, the thermal conductive agent, activated magnesium oxide, calcium oxide, glass microspheres, matting agent, iron oxide red, vulcanizing agent, and crosslinking agent are each taken in the specified proportions and mixed. Fluororubber solution is added to a mixer, and while stirring the fluororubber solution, the thermal conductive agent, activated magnesium oxide, calcium oxide, glass microspheres, matting agent, iron oxide red, vulcanizing agent, and crosslinking agent are added and mixed. The mixture is stirred for 30–60 minutes at a speed of 550–1000 r / min. After filtering through a 60–120 mesh filter, fluororubber is obtained, ensuring that there are no agglomerates in the colloid before use. The thermal conductive agent is used to improve the uniform thermal conductivity of the colloid after the binary fluororubber FKM is dissolved. The spherical particles have good flowability and bulk density. High thermal conductivity, forming a continuous thermal conduction path inside the rubber, significantly improving thermal conductivity. Ordinary fluororubber has a thermal conductivity of 0.2 W / m·K, while after filling, it reaches 1.0-3.0 W / m·K. Active magnesium oxide and calcium oxide are used to neutralize the acidic substances generated during the vulcanization and aging of binary fluororubber FKM, protecting the rubber from corrosion and premature damage. The particle size of glass microspheres is 30-100 μm, used to increase the hardness of the fluororubber cushioning pad and improve its cushioning performance. Matte powder makes the glossy surface of the fluororubber cushioning pad turn into a matte or matte texture, while improving the feel and enhancing the non-stick performance. Iron oxide red is used for coloring. Vulcanizing agents and crosslinking agents are used in combination to assist the binary fluororubber FKM in curing from soft raw rubber into shape.

[0031] Further, in step (2), the first fabric is first dip-coated with fluororubber at least once, with a dip-coating speed of 8-10 m / min and a dip-coating thickness of 0.25-0.35 mm. Then, it is dried at a high temperature of 80-130°C at least once, with a high-temperature drying time of 1-10 min, to obtain a fluororubber adhesive layer. The fluororubber adhesive layer is then wound up for later use. The high-temperature drying is performed using a vertical tunnel oven. The dip-coating process is performed using a dip-coating machine. Preferably, the first fabric is a 7628 face fabric with a yarn diameter of 9 μm and a pre-coating weight of 2.14 g / m². 2 -3.54g / m 2 The thickness is 0.2–0.285 mm. Specifically, the first side of the first fabric is first dip-coated, then the second side of the first fabric is dip-coated, and then it is dried at high temperature in a vertical tunnel oven. The first fabric passes through the temperature drying zones A1-A4 and B1-B4 in sequence. Figure 1 As shown.

[0032] Further, in step (3), fluororubber is uniformly coated onto one side of the second fabric with a coating thickness of 0.25–0.5 mm and a coating speed of 8–10 m / min. It is then dried at least once at a high temperature of 80–120°C for 1–10 min to obtain a fluororubber surface layer. The fluororubber surface layer is then rolled up for later use. The high-temperature drying is performed using a horizontal tunnel oven, and the coating process is carried out using a blade coating machine. Preferably, the second fabric is a 7629 fabric with a yarn diameter of 9 μm and a pre-coating weight of 2.46 g / m². 2 The thickness is 0.195mm. Specifically, the second fabric is coated with the fluororubber of the first side using a doctor blade coating machine. After the coating process, the second fabric undergoes high-temperature drying in a horizontal tunnel oven. Figure 2 As shown.

[0033] Furthermore, the other side of the 7629 fabric undergoes a scraping coating treatment. The coating material is at least one of polyimide, polypyrrolidone tetracarboxylate, polyetherimide, and polyamide-imide. The coating thickness is 0.25–0.5 mm, the scraping speed is 8–10 m / min, and it undergoes at least one high-temperature drying at 80–120°C for 1–10 minutes. The fluororubber surface layer is then rolled up for later use. The high-temperature drying is performed using a horizontal tunnel oven, and the scraping treatment uses a blade coating machine. Figure 2 As shown.

[0034] Further, in step (4), one side of the third fabric is first dip-coated with fluororubber at least once, with a dipping speed of 10-17 m / min and a coating thickness of 0.85-1 mm. Then, it is dried at least once at a high temperature of 80-120°C for 1-10 min. The other side of the third fabric is then dip-coated with fluororubber at least once, with a dipping speed of 1-10 m / min and a coating thickness of 0.9-1.5 mm. Then, it is dried at least once at a high temperature of 80-120°C for 1-10 min. The process takes 1-10 minutes to obtain a fluororubber expanded layer, which is then wound up for later use. High-temperature drying is performed using a vertical tunnel oven. The dip-coating process uses a dip-coating machine. Preferably, the third pre-coated fabric is made of expanded glass fiber cloth with a yarn diameter of 6µm. Expanded glass fiber cloth possesses properties such as non-combustibility, fire resistance, high tensile strength, dimensional stability, low shrinkage, non-deformation, looseness and porosity, good air permeability, easy resin wetting, acid and alkali resistance, aging resistance, and electrical insulation. The expanded glass fiber cloth is used to improve the high-temperature resistance and corrosion resistance of the fluororubber expanded layer. The pre-coating weight is 8g / m². 2 -8.94g / m 2The thickness is 0.88–0.91 mm. Specifically, the first side of the expanded glass fiber cloth is dip-coated using a dip-coating machine, and then the second side is dip-coated. Afterward, it is dried at high temperature in a vertical tunnel oven. Figure 1 As shown.

[0035] Furthermore, in step (6), a laminating machine is used to perform high-temperature lamination on the stacked materials. The lamination temperature is 200–300°C, the lamination time is 100–500 seconds, and the lamination pressure is 5–25 kg / cm². 2 ,like Figure 3 As shown.

[0036] It should be noted that the thermal conductive agent is at least one of spherical alumina, boron nitride, or zinc oxide; the vulcanizing agent is at least one of bisphenol AF, bisphenol S, bisphenol A, bisphenol AP, DCP, or BIPB; and the crosslinking agent is at least one of BPP (benzyltriphenylphosphine chloride, CAS 1100-88-5), tetrabutylphosphine chloride, tetrabutylphosphine bromide, or triphenylethylphosphine bromide. Specific Implementation Example 1: The present invention also discloses a method for processing a fluororubber buffer pad, the fluororubber buffer pad comprising one and only two fluororubber surface layers and one and only one fluororubber expanded layer disposed between the two fluororubber surface layers, and a fluororubber adhesive layer disposed between the fluororubber surface layers and the fluororubber expanded layer.

[0038] Further, the processing steps of the fluororubber buffer pad are as follows: (1) Fluororubber preparation: The fluororubber formulation includes binary fluororubber FKM, ethyl acetate, thermal conductive agent, active magnesium oxide, calcium oxide, glass microspheres, matting agent, iron oxide red, vulcanizing agent and crosslinking agent. The fluororubber formulation is prepared by dissolving binary fluororubber FKM and ethyl acetate in a ratio of 1:1.0-2 to obtain a fluororubber solution. Based on 100 parts of binary fluororubber FKM as the base weight, it also contains the following components: thermal conductive agent 20-60 parts, active magnesium oxide 3-6 parts, calcium oxide 10-50 parts, glass microspheres 10-40 parts, matting agent 5-20 parts, iron oxide red 1-5 parts, vulcanizing agent 1 ~5 parts and 0.25~1.25 parts of crosslinking agent, respectively, are mixed with fluororubber solution to obtain fluororubber, and the fluororubber is added to the processing equipment of the corresponding layer material for later use; (2) Making fluororubber adhesive layer: take the first fabric, use the fluororubber in step (1) to dip and coat the first fabric, and heat treatment is required after each dip and coat treatment, and then roll it up to obtain fluororubber adhesive layer for later use; (3) Making fluororubber surface layer: take the second fabric, use the fluororubber in step (1) to scrape and coat at least one side of the second fabric, and then heat treatment is required, and then roll it up to obtain fluororubber surface layer for later use; 4) Making the fluororubber expanded layer: Take the third fabric and dip it with the fluororubber from step (1). After each dip coating, heat treatment is required. Then roll it up to obtain the fluororubber expanded layer for later use. (5) Loading the rolls: Place the rolls of the fluororubber adhesive layer from step (2), the fluororubber surface layer from step (3), and the fluororubber expanded layer from step (4) at the feeding end of the equipment. Align and stack the fluororubber adhesive layer, the fluororubber surface layer, and the fluororubber expanded layer according to the structural sequence of the fluororubber buffer pad. When there are two or more fluororubber expanded layers, at least one fluororubber adhesive layer should be placed at the feeding end, and the fluororubber adhesive layer should be placed on the second fluororubber expanded layer. Between the layers, then, one end of each layer of material is passed through the first traction part of the processing equipment through the composite part of the processing equipment and pre-loaded onto the second traction part of the processing equipment; (6) Material composite: Start the processing equipment, and through the cooperation of the first traction part and the second traction part of the processing equipment, pull the stacked material of step (5) from the feed end of the composite part to the processing area of ​​the composite part at a fixed length, and perform high temperature composite to obtain strip-shaped fluororubber buffer material; (7) Material cutting: The processing equipment conveys the fluororubber buffer material of step (6) to the cutting part of the processing equipment at a fixed length through the second traction part, and cuts the fluororubber buffer material through the cutting part to obtain fluororubber buffer pad.

[0039] Further, the binary fluororubber FKM is crushed into granules with an irregular shape of 1-5 cm in size. In step (1), the binary fluororubber FKM and ethyl acetate are taken in proportion and mixed in a mixer at high speed for 1.5-2 hours at a stirring speed of 550-2000 r / min. Then, the mixture is filtered through a 60-120 mesh filter to obtain a fluororubber solution. It can only be used after it is fully dissolved and there is no sediment at the bottom of the container. The binary fluororubber FKM is crushed using a crusher.

[0040] Furthermore, the thermal conductive agent, active magnesium oxide, calcium oxide, glass microspheres, matting agent, iron oxide red, vulcanizing agent, and crosslinking agent are each taken in the specified proportions and mixed. Fluororubber solution is added to a mixer, and while stirring the fluororubber solution, the thermal conductive agent, active magnesium oxide, calcium oxide, glass microspheres, matting agent, iron oxide red, vulcanizing agent, and crosslinking agent are added and mixed. The mixture is stirred for 30-60 minutes at a stirring speed of 550-1000 r / min. After filtering through a 60-120 mesh filter, fluororubber is obtained. It can only be used after the colloid is free of agglomerates.

[0041] Further, in step (2), the first fabric is first dip-coated with fluororubber at a speed of 8-10 m / min and a thickness of 0.25-0.35 mm. Then, it is dried at a high temperature of 80-130°C for 1-10 minutes to obtain a fluororubber adhesive layer. The fluororubber adhesive layer is then wound up for later use. The high-temperature drying is performed using a vertical tunnel oven. The dip-coating process uses a dip-coating machine. Preferably, the first fabric is a 7628 face fabric with a yarn diameter of 9 μm. Figure 1 As shown.

[0042] Further, in step (3), fluororubber is uniformly coated onto one side of the second fabric with a coating thickness of 0.25–0.5 mm and a coating speed of 8–10 m / min. It is then subjected to a high-temperature drying process at 80–120°C for 1–10 min. The high-temperature drying is performed using a horizontal tunnel oven, and the coating process is carried out using a blade coating machine. Preferably, the second fabric is a 7629 face fabric with a yarn diameter of 9 μm. Figure 2 As shown.

[0043] Furthermore, the other side of the 7629 fabric undergoes a scraping coating process. The coating material is polyimide (PI). The polyimide (PI) coating provides the 7629 fabric with a high-temperature resistant, highly insulating, and flame-retardant protective layer. Continuous operating temperatures can reach 200℃~260℃, and the glass transition temperature is typically between 280℃~360℃. It maintains dimensional stability and mechanical strength within a temperature range of -269℃ to 400℃, with a tensile strength of 100~170MPa. This prevents the 7629 fabric from shrinking, warping, and deteriorating under high-temperature conditions. The coating thickness is 0.25~0.5mm, and the scraping speed is 8~10m / min. A high-temperature drying process is performed at 80~120℃ for 1~10 minutes. The fluororubber surface layer is then rolled up for later use. The high-temperature drying is conducted using a horizontal tunnel oven, and the scraping treatment utilizes a blade-type coating machine. Figure 2 As shown.

[0044] Further, in step (4), one side of the third fabric is first dip-coated with fluororubber at a speed of 10-17 m / min and a thickness of 0.85-1 mm. Then, it is dried at 80-120°C for 1-10 min. The other side of the third fabric is then dip-coated with fluororubber at a speed of 1-10 m / min and a thickness of 0.9-1.5 mm. Then, it is dried at 80-120°C for 1-10 min to obtain a fluororubber expanded layer. The fluororubber expanded layer is then wound up for later use. The high-temperature drying is performed using a vertical tunnel oven. The dip-coating process uses a dip-coating machine. Preferably, the third fabric is made of expanded glass fiber cloth with a yarn diameter of 6 μm. Figure 1 As shown.

[0045] Furthermore, in step (5), a laminating machine is used to perform high-temperature lamination on the stacked materials. The lamination temperature is 200–300°C, the lamination time is 100–500 seconds, and the lamination pressure is 5–25 kg / cm². 2 ,like Figure 3 As shown.

[0046] It should be noted that the thermal conductive agent is spherical alumina; the vulcanizing agent is bisphenol AF; and the crosslinking agent is BPP (benzyltriphenylphosphine chloride, CAS 1100-88-5).

[0047] Beneficial effects: The obtained fluororubber cushioning pad has excellent chemical corrosion resistance, high temperature resistance and wear resistance. The middle fluororubber expanded layer is double-sided impregnated and coated. Combined with the fluffy and porous characteristics of the expanded glass fiber cloth itself, it has good compression rebound ability when under pressure, which can effectively absorb impact energy and achieve excellent cushioning and shock absorption effect. The adhesive layer ensures a firm bond between the surface layer and the expanded layer, avoiding interlayer delamination during use. Specific Implementation Example 2: The present invention also discloses a method for processing a fluororubber cushioning pad, the fluororubber cushioning pad comprising one and only two fluororubber surface layers and two fluororubber expanded layers disposed between the two fluororubber surface layers, the two fluororubber expanded layers being connected by a fluororubber adhesive layer.

[0049] Further, the processing steps of the fluororubber buffer pad are as follows: (1) Fluororubber preparation: The fluororubber formulation includes binary fluororubber FKM, ethyl acetate, thermal conductive agent, active magnesium oxide, calcium oxide, glass microspheres, matting agent, iron oxide red, vulcanizing agent and crosslinking agent. The fluororubber formulation is dissolved in a 1:1 ratio of binary fluororubber FKM and ethyl acetate to obtain a fluororubber solution. Based on 100 parts of binary fluororubber FKM as the base weight, it also contains the following components: 20 parts of thermal conductive agent, 3 parts of active magnesium oxide, 10 parts of calcium oxide, 10 parts of glass microspheres, 5 parts of matting agent, 1 part of iron oxide red, 1 part of vulcanizing agent and 0 parts of crosslinking agent. 25 parts, respectively, the raw materials were mixed according to the amount and then mixed with fluororubber solution to obtain fluororubber, and the fluororubber was added to the processing equipment of the corresponding layer material for later use; (2) Making fluororubber adhesive layer: take the first fabric, use the fluororubber in step (1) to dip and coat the first fabric, and heat treatment is required after each dip and coat treatment, and then roll it up to obtain fluororubber adhesive layer for later use; (3) Making fluororubber surface layer: take the second fabric, use the fluororubber in step (1) to scrape and coat at least one side of the second fabric, and then heat treatment is required, and then roll it up to obtain fluororubber surface layer for later use; (4) Making Fluororubber expanded layer: Take the third fabric and apply the fluororubber from step (1) to the third fabric for impregnation. After each impregnation treatment, heat treatment is required. Then roll it up to obtain the fluororubber expanded layer for later use. (5) Loading the rolls: Place the rolls of the fluororubber adhesive layer from step (2), the fluororubber surface layer from step (3), and the fluororubber expanded layer from step (4) at the feeding end of the equipment. Align and stack the fluororubber adhesive layer, the fluororubber surface layer, and the fluororubber expanded layer according to the structural sequence of the fluororubber buffer pad. Set a fluororubber adhesive layer at the feeding end and place the fluororubber adhesive layer between the two fluororubber expanded layers. Then, load the stacked rolls. One end of each layer of material passes through the first traction part of the processing equipment through the composite part of the processing equipment and is pre-loaded onto the second traction part of the processing equipment; (6) Material composite: Start the processing equipment, and through the cooperation of the first traction part and the second traction part of the processing equipment, pull the superimposed layers of material in step (5) from the feed end of the composite part to the processing area of ​​the composite part for high-temperature composite to obtain strip-shaped fluororubber buffer material; (7) Material cutting: The processing equipment conveys the fluororubber buffer material from step (6) to the cutting part of the processing equipment through the second traction part, and cuts the fluororubber buffer material through the cutting part to obtain fluororubber buffer pad.

[0050] Further, the binary fluororubber FKM is crushed into granules with an irregular shape of 1-5 cm in size to facilitate dissolution after crushing. In step (1), the binary fluororubber FKM and ethyl acetate are taken in proportion and mixed at high speed in a mixer for 1.5-2 hours at a stirring speed of 550-2000 r / min. Then, the mixture is filtered through a 60-120 mesh filter to obtain a fluororubber solution. It can only be used after it is fully dissolved and there is no sediment at the bottom of the container. The binary fluororubber FKM is crushed using a crusher.

[0051] Furthermore, boron nitride, activated magnesium oxide, calcium oxide, glass microspheres, matting agent, iron oxide red, bisphenol S, and tetrabutylphosphine chloride are prepared by mixing each raw material according to their respective proportions. Fluororubber solution is added to a mixer, and while stirring the fluororubber solution, thermal conductive agent, activated magnesium oxide, calcium oxide, glass microspheres, matting agent, iron oxide red, bisphenol S (vulcanizing agent), and tetrabutylphosphine chloride (crosslinking agent) are added and mixed. The mixture is stirred for 30-60 minutes at a stirring speed of 550-1000 r / min. After filtering through a 60-120 mesh filter, fluororubber is obtained. It is used after ensuring that there are no agglomerates in the colloid.

[0052] Further, in step (2), the first fabric is first impregnated with fluororubber at a speed of 8-10 m / min and a thickness of 0.25-0.35 mm. Then, it is dried at a high temperature of 80-130°C for 1-10 minutes to obtain the fluororubber adhesive layer. The fluororubber adhesive layer is then wound up for later use. The high-temperature drying is performed using a vertical tunnel oven, such as... Figure 1 As shown; this dip coating treatment is performed using a dip coating machine; preferably, the first fabric is a 7628 face fabric with a yarn diameter of 9µm, and the weight of the 7628 face fabric before coating is 2.14g / m². 2 -3.54g / m 2 And the thickness is 0.2 to 0.285 mm.

[0053] Further, in step (3), fluororubber is uniformly coated onto one side of the second fabric with a coating thickness of 0.25–0.5 mm and a coating speed of 8–10 m / min. It is then subjected to a high-temperature drying process at 80–120°C for 1–10 minutes. The high-temperature drying is performed using a horizontal tunnel oven, and the coating process is carried out using a blade coating machine. Figure 2 As shown; preferably, the second fabric is a 7629 face fabric with a yarn diameter of 9µm, and the weight of the 7629 face fabric before coating is 2.46g / m². 2 And the thickness is 0.195mm.

[0054] Furthermore, the other side of the 7629 fabric undergoes a scraping coating process. The coating material is poly(p-phenylene oxide) (PMI). The PMI coating imparts high-temperature insulation properties to the 7629 fabric, enabling continuous use at temperatures exceeding 240°C, a glass transition temperature exceeding 280°C, and short-term tolerance to temperatures exceeding 300°C. It also exhibits extremely low thermal expansion coefficients and dimensional stability, effectively preventing warping, cracking, and performance degradation of the 7629 fabric under high-temperature conditions. The coating thickness is 0.25–0.5 mm, and the scraping speed is 8–10 m / min. A high-temperature drying process is then performed at 80–120°C for 1–10 minutes. The fluororubber surface layer is then rolled up for later use. The high-temperature drying is conducted using a horizontal tunnel oven, while the scraping coating process utilizes a blade-type coating machine. Figure 2 As shown.

[0055] Further, in step (4), one side of the third fabric is first dip-coated with fluororubber at a speed of 10-17 m / min and a thickness of 0.85-1 mm. Then, it is dried at 80-120°C for 1-10 min. The other side of the third fabric is then dip-coated with fluororubber at a speed of 1-10 m / min and a thickness of 0.9-1.5 mm. This is followed by drying at 80-120°C for 1-10 min to obtain a fluororubber expanded layer. The expanded fluororubber layer is then wound up for later use. The high-temperature drying is performed using a vertical tunnel oven. The dip-coating process is carried out using a dip-coating machine, such as... Figure 1 As shown; preferably, the third fabric is a 6µm expanded glass fiber cloth, in which continuous glass fiber filaments are subjected to air deformation / expansion treatment to make the yarn fluffy and full of voids, and then woven to form a twill expanded glass fiber cloth. This cloth possesses properties such as non-combustibility, fire resistance, high tensile strength, dimensional stability, low shrinkage, non-deformation, fluffy and porous structure, good air permeability, easy resin impregnation, acid and alkali resistance, aging resistance, and electrical insulation. It also improves the high-temperature resistance and corrosion resistance of the fluororubber expanded layer. The pre-coating weight of the expanded glass fiber cloth is 8g / m². 2 -8.94g / m 2 And the thickness is 0.88 to 0.91 mm.

[0056] Furthermore, in step (6), a laminating machine is used to perform high-temperature lamination on the stacked materials. The lamination temperature is 200℃, the lamination time is 100 seconds, and the lamination pressure is 5~25kg / cm². 2 ,like Figure 3 As shown.

[0057] Beneficial effects: The resulting fluororubber cushioning pad has excellent chemical corrosion resistance, high temperature resistance, and wear resistance. The expanded layer can fully utilize its porous foaming characteristics to provide excellent cushioning and energy absorption, absorbing and dispersing external impact and vibration energy. The fluororubber surface layer provides good surface protection properties such as abrasion resistance, high and low temperature resistance, and chemical resistance. The adhesive layer ensures reliable bonding between the surface layer and the expanded layer, avoiding interlayer delamination during use. Compared with the traditional peroxide vulcanization system, it can achieve efficient cross-linking at lower temperatures, ensuring both the density and mechanical strength of the fluororubber surface layer and allowing the expanded layer to maintain a moderate expanded foaming state during high-temperature composite processes without being over-compacted, thereby maximizing the preservation of the cushioning performance of the expanded layer. Specific Implementation Example 3: This invention relates to a method for processing a fluororubber cushioning pad, the fluororubber cushioning pad comprising one and only two fluororubber surface layers and two fluororubber expanded layers disposed between the two fluororubber surface layers, the two fluororubber expanded layers being connected by a fluororubber adhesive layer.

[0059] Further, the processing steps of the fluororubber buffer pad are as follows: (1) Fluororubber preparation: The fluororubber formulation includes binary fluororubber FKM, ethyl acetate, thermal conductive agent, active magnesium oxide, calcium oxide, glass microspheres, matting agent, iron oxide red, vulcanizing agent and crosslinking agent. The fluororubber formulation is prepared by dissolving binary fluororubber FKM and ethyl acetate in a ratio of 1:1.5 to obtain a fluororubber solution. Based on 100 parts of binary fluororubber FKM as the base weight, it also contains the following components: 40 parts of thermal conductive agent, 4.5 parts of active magnesium oxide, 30 parts of calcium oxide, 25 parts of glass microspheres, 12.5 parts of matting agent, 2.5 parts of iron oxide red, and 2.5 parts of vulcanizing agent. The raw materials and crosslinking agent are 0.75 parts each. After mixing the raw materials according to the specified amount, they are added to the fluororubber solution to obtain fluororubber. The fluororubber is then added to the processing equipment of the corresponding layer materials for later use. (2) Making the fluororubber adhesive layer: Take the first fabric and apply the fluororubber from step (1) to the first fabric for impregnation treatment. After each impregnation treatment, heat treatment is required. Then, the fabric is rolled up to obtain the fluororubber adhesive layer for later use. (3) Making the fluororubber surface layer: Take the second fabric and apply the fluororubber from step (1) to one side of the second fabric for scraping treatment. Then, heat treatment is required. Then, the fabric is rolled up to obtain the fluororubber surface layer for later use. 4) Making the fluororubber expanded layer: Take the third fabric and dip it with the fluororubber from step (1). After each dip coating, heat treatment is required. Then roll it up to obtain the fluororubber expanded layer for later use; (5) Loading the rolls: Place the rolls of the fluororubber adhesive layer from step (2), the fluororubber surface layer from step (3), and the fluororubber expanded layer from step (4) at the feeding end of the equipment. Align and stack the fluororubber adhesive layer, the fluororubber surface layer, and the fluororubber expanded layer according to the structural sequence of the fluororubber buffer pad. Set a layer of fluororubber adhesive layer at the feeding end and place the fluororubber adhesive layer between the two fluororubber expanded layers. Then, load the rolls of the fluororubber expanded layer. One end of each layer of material is passed through the first traction part of the processing equipment and pre-loaded onto the second traction part of the processing equipment; (6) Material compounding: The processing equipment is started, and the first traction part and the second traction part of the processing equipment work together to pull the stacked materials in step (5) from the feed end of the compounding part to the processing area of ​​the compounding part for high-temperature compounding to obtain strip-shaped fluororubber buffer material; (7) Material cutting: The processing equipment conveys the fluororubber buffer material from step (6) to the cutting part of the processing equipment through the second traction part, and cuts the fluororubber buffer material through the cutting part to obtain fluororubber buffer pad.

[0060] Further, the binary fluororubber FKM is crushed into granules with an irregular shape of 1-5 cm in size. In step (1), the binary fluororubber FKM and ethyl acetate are taken in proportion and mixed in a mixer at high speed for 1.5-2 hours at a stirring speed of 550-2000 r / min. Then, the mixture is filtered through a 60-120 mesh filter to obtain a fluororubber solution. It can only be used after it is fully dissolved and there is no sediment at the bottom of the container. The binary fluororubber FKM is crushed using a crusher.

[0061] Furthermore, zinc oxide, activated magnesium oxide, calcium oxide, glass microspheres, matting agent, iron oxide red, bisphenol A, and tetrabutylphosphine bromide are prepared by mixing each raw material according to their respective proportions. Fluororubber solution is added to a mixer, and while stirring the fluororubber solution, thermal conductive agent, activated magnesium oxide, calcium oxide, glass microspheres, matting agent, iron oxide red, bisphenol A (vulcanizing agent), and tetrabutylphosphine bromide (crosslinking agent) are added and mixed. The mixture is stirred for 30-60 minutes at a stirring speed of 550-1000 r / min. After filtering through a 60-120 mesh filter, fluororubber is obtained. It is used after ensuring that there are no agglomerates in the colloid.

[0062] Further, in step (2), the first fabric is first subjected to a secondary impregnation treatment with fluororubber at a speed of 8-10 m / min and a thickness of 0.25-0.35 mm. Then, it is subjected to a secondary high-temperature drying at 80-130°C for 1-10 min to obtain a fluororubber adhesive layer. The fluororubber adhesive layer is then wound up for later use. The high-temperature drying is performed using a vertical tunnel oven. This impregnation treatment is performed using an impregnation coating machine, such as... Figure 1 As shown; preferably, the first fabric is a 7628 face fabric with a yarn diameter of 9µm, and the weight of the 7628 face fabric before coating is 2.14 g / m². 2 -3.54g / m 2 And the thickness is 0.2 to 0.285 mm.

[0063] Further, in step (3), fluororubber is uniformly coated onto one side of the second fabric with a coating thickness of 0.25–0.5 mm and a coating speed of 8–10 m / min. A second high-temperature drying process is then performed at 80–120°C for 1–10 min. The high-temperature drying is conducted using a horizontal tunnel oven, and the coating process is performed using a blade coating machine. Figure 2 As shown; preferably, the second fabric is a 7629 face fabric with a yarn diameter of 9µm and a pre-coating weight of 2.46g / m². 2 And the thickness is 0.195mm.

[0064] Furthermore, the other side of the 7629 fabric undergoes a scraping coating process. The coating material is polyetherimide. The role of polyetherimide is to give the 7629 fabric high-temperature insulation, flame retardancy, and anti-blocking properties. Polyetherimide is an amorphous aromatic thermoplastic material with a continuous operating temperature up to 200℃ and a glass transition temperature of 217℃. Its heat distortion temperature can reach over 200℃, maintaining dimensional stability and mechanical strength. The polyetherimide coating has a smooth surface and a low coefficient of friction, giving the 7629 fabric good anti-blocking and easy demolding properties. The scraping thickness is 0.25–0.5 mm, the scraping speed is 8–10 m / min, and it undergoes a high-temperature drying process at 80–120℃ for 1–10 minutes. The fluororubber surface layer is then rolled up for later use. The high-temperature drying is performed using a horizontal tunnel oven, and the scraping treatment uses a doctor blade coating machine. Figure 2 As shown.

[0065] Further, in step (4), one side of the third fabric is first subjected to a secondary dip-coating treatment with fluororubber at a speed of 10-17 m / min and a coating thickness of 0.85-1 mm. Then, it is subjected to a secondary high-temperature drying at 80-120°C for 1-10 min. The other side of the third fabric is then subjected to a secondary dip-coating treatment with fluororubber at a speed of 1-10 m / min and a coating thickness of 0.9-1.5 mm. Then, it is subjected to a first high-temperature drying at 80-120°C for 1-10 min to obtain a fluororubber expanded layer. The fluororubber expanded layer is then wound up for later use. The high-temperature drying is performed using a vertical tunnel oven. This dip-coating treatment is performed using a dip-coating machine, such as... Figure 1 As shown; preferably, the third fabric is a bulked glass fiber cloth with a yarn diameter of 6 μm and a basis weight of 8 g / m² before coating. 2 -8.94g / m 2 And the thickness is 0.88 to 0.91 mm.

[0066] Furthermore, in step (6), a laminating machine is used to perform high-temperature lamination on the stacked materials. The lamination temperature is 250℃, the lamination time is 200 seconds, and the lamination pressure is 5~25kg / cm². 2 ,like Figure 3 As shown.

[0067] Beneficial effects: The obtained fluororubber cushioning pad has excellent cushioning and shock absorption performance, good thermal conductivity and heat dissipation capacity, excellent resistance to high and low temperatures and chemical media, and reliable interlayer bonding strength. The middle fluororubber expanded layer adopts a double-sided dip-coating process and uses expanded glass fiber cloth as the substrate, which gives the expanded layer good flexibility and resilience, giving the fluororubber cushioning pad excellent shock absorption and energy absorption performance. The adhesive layer ensures that a strong chemical bond is formed between the surface layer and the expanded layer, avoiding interlayer debonding failure. Spherical alumina is used as a thermal conductive agent and combined with a large proportion of calcium oxide, giving the cushioning pad excellent thermal conductivity and heat dissipation capacity. At the same time, the structural strength is strengthened by glass microspheres, the matting powder reduces the surface reflectivity, and the interaction between active magnesium oxide and calcium oxide not only improves the vulcanization efficiency but also effectively absorbs the acidic by-products generated during the vulcanization process of fluororubber. The combination of bisphenol A and tetrabutylphosphine bromide increases the crosslinking density of fluororubber. Specific Implementation Example 4: The present invention also discloses a method for processing a fluororubber cushioning pad, the fluororubber cushioning pad comprising one and only two fluororubber surface layers and three fluororubber expanded layers disposed between the two fluororubber surface layers, the fluororubber expanded layers being connected to each other by a fluororubber adhesive layer.

[0069] Further, the processing steps of the fluororubber buffer pad are as follows: (1) Fluororubber preparation: The fluororubber formulation includes binary fluororubber FKM, ethyl acetate, thermal conductive agent, active magnesium oxide, calcium oxide, glass microspheres, matting agent, iron oxide red, vulcanizing agent and crosslinking agent. The fluororubber formulation is dissolved in a ratio of 1:2 of binary fluororubber FKM and ethyl acetate to obtain a fluororubber solution. Based on 100 parts of binary fluororubber FKM as the base weight, it also contains the following components: 60 parts of thermal conductive agent, 6 parts of active magnesium oxide, 50 parts of calcium oxide, 40 parts of glass microspheres, 20 parts of matting agent, 5 parts of iron oxide red, 5 parts of vulcanizing agent and crosslinking agent. 1.25 parts, respectively, the raw materials are mixed according to the amount and then mixed with fluororubber solution to obtain fluororubber, and the fluororubber is added to the processing equipment of the corresponding layer material for later use; (2) Making fluororubber adhesive layer: take the first fabric, use the fluororubber in step (1) to dip and coat the first fabric, and heat treatment is required after each dip and coat treatment, and then roll it up to obtain fluororubber adhesive layer for later use; (3) Making fluororubber surface layer: take the second fabric, use the fluororubber in step (1) to scrape and coat at least one side of the second fabric, and then heat treatment is required, and then roll it up to obtain fluororubber surface layer for later use; (4) ) Making the fluororubber expanded layer: Take the third fabric and dip it with the fluororubber from step (1). After each dip coating, heat treatment is required. Then roll it up to obtain the fluororubber expanded layer for later use; (5) Loading the rolls: Place the rolls of the fluororubber adhesive layer from step (2), the fluororubber surface layer from step (3), and the fluororubber expanded layer from step (4) at the feeding end of the equipment. Then, according to the structural order of the fluororubber buffer pad, align and stack the fluororubber surface layer, fluororubber expanded layer, fluororubber adhesive layer, fluororubber expanded layer, fluororubber adhesive layer, fluororubber expanded layer, and fluororubber surface layer in sequence. Then, load the stacked rolls into the machine. One end of the material layer passes through the composite section of the processing equipment via the first traction part of the processing equipment and is pre-loaded onto the second traction part of the processing equipment; (6) Material composite: Start the processing equipment, and through the cooperation of the first traction part and the second traction part of the processing equipment, pull the superimposed material layers in step (5) from the feed end of the composite section to the processing area of ​​the composite section for high-temperature composite to obtain strip-shaped fluororubber buffer material; (7) Material cutting: The processing equipment conveys the fluororubber buffer material from step (6) to the cutting part of the processing equipment through the second traction part, and cuts the fluororubber buffer material through the cutting part to obtain fluororubber buffer pad.

[0070] Further, the binary fluororubber FKM is crushed into granules with an irregular shape of 1-5 cm in size. In step (1), the binary fluororubber FKM and ethyl acetate are taken in proportion and then mixed at high speed in a mixer for 2 hours at a stirring speed of 2000 r / min. Afterward, the mixture is filtered through a 60-120 mesh filter to obtain a fluororubber solution. It can only be used after the solution is fully dissolved and there is no sediment at the bottom of the container. The binary fluororubber FKM is crushed using a crusher.

[0071] Furthermore, spherical alumina, activated magnesium oxide, calcium oxide, glass microspheres, matting agent, iron oxide red, bisphenol AP, and triphenylethyl phosphine bromide are taken in proportion to each raw material and mixed. Fluororubber solution is added to a mixer, and while stirring the fluororubber solution, thermal conductive agent, activated magnesium oxide, calcium oxide, glass microspheres, matting agent, iron oxide red, bisphenol AP, and triphenylethyl phosphine bromide are added and mixed. The mixture is stirred for 30-60 minutes at a stirring speed of 550-1000 r / min. After filtering through a 60-120 mesh filter, fluororubber is obtained. It is used after ensuring that there are no agglomerates in the colloid.

[0072] Further, in step (2), the first fabric is first subjected to a secondary impregnation treatment with fluororubber at a speed of 8-10 m / min and a thickness of 0.25-0.35 mm. Then, it is subjected to a secondary high-temperature drying at 80-130°C for 1-10 min to obtain a fluororubber adhesive layer. The fluororubber adhesive layer is then wound up for later use. The high-temperature drying is performed using a vertical tunnel oven. This impregnation treatment is performed using an impregnation coating machine, such as... Figure 1 As shown; preferably, the first fabric is a 7628 face fabric with a yarn diameter of 9µm, and the weight of the 7628 face fabric before coating is 2.14 g / m². 2 -3.54g / m 2 And the thickness is 0.2 to 0.285 mm.

[0073] Further, in step (3), fluororubber is uniformly coated onto one side of the second fabric with a coating thickness of 0.25–0.5 mm and a coating speed of 8–10 m / min. A second high-temperature drying process is then performed at 80–120°C for 1–10 min. The high-temperature drying is conducted using a horizontal tunnel oven, and the coating process is performed using a blade coating machine, such as… Figure 2 As shown; preferably, the second fabric is a 7629 face fabric with a yarn diameter of 9µm, and the weight of the 7629 face fabric before coating is 2.46g / m². 2 And the thickness is 0.195mm.

[0074] Furthermore, the other side of the 7629 fabric undergoes a scraping coating process. The coating material is polyamide-imide, in which the amide and imide bonds in the polyamide-imide molecular chain form a coating on the 7629 fabric surface that integrates high temperature resistance, insulation, wear resistance, and corrosion resistance. Its operating temperature ranges from -195℃ to 230℃, with long-term use up to 220℃. This allows the fluororubber surface layer to maintain dimensional stability and tensile strength even at 220℃. The coating thickness is 0.25–0.5 mm, and the scraping speed is 8–10 m / min. A second high-temperature drying process is performed at 80–120℃ for 1–10 minutes, followed by winding up the fluororubber surface layer for later use. The high-temperature drying is conducted using a horizontal tunnel oven, while the scraping coating process utilizes a blade-type coating machine. Figure 2 As shown.

[0075] Further, in step (4), one side of the third fabric is first subjected to a secondary dip-coating treatment with fluororubber at a speed of 10-17 m / min and a coating thickness of 0.85-1 mm. Then, it is subjected to a secondary high-temperature drying at 80-120°C for 1-10 min. The other side of the third fabric is then subjected to a primary dip-coating treatment with fluororubber at a speed of 1-10 m / min and a coating thickness of 0.9-1.5 mm. Next, it is subjected to a primary high-temperature drying at 80-120°C for 1-10 min, obtaining a fluororubber expanded layer. The fluororubber expanded layer is then wound up for later use. The high-temperature drying is performed using a vertical tunnel oven. The dip-coating treatment is performed using a dip-coating machine. Figure 1 As shown; preferably, the third fabric is a bulked glass fiber cloth with a yarn diameter of 6 μm and a basis weight of 8 g / m² before coating. 2 -8.94g / m 2 And the thickness is 0.88 to 0.91 mm.

[0076] Furthermore, in step (6), a laminating machine is used to perform high-temperature lamination on the stacked materials. The lamination temperature is 300℃, the lamination time is 400 seconds, and the lamination pressure is 25 kg / cm². 2 ,like Figure 3 As shown.

[0077] Beneficial effects: The obtained fluororubber cushioning pad has excellent cushioning and shock absorption performance, good thermal conductivity and heat dissipation, excellent resistance to high and low temperatures and chemical media, and reliable interlayer bonding strength. The adhesive layer is coated to allow the fluororubber to penetrate deep into the fabric fibers to form a strong anchoring effect. The surface layer is coated to precisely control the thickness to ensure surface flatness. The expanded layer is coated on both sides and then coated a second time to increase the thickness and improve the elastic cushioning performance. Specific Implementation Example 5: Preferably, the fluororubber cushioning pad includes two fluororubber surface layers and seven fluororubber expanded layers disposed between the two fluororubber surface layers, with each fluororubber expanded layer connected to the others by a fluororubber adhesive layer.

[0079] Further, the processing steps of the fluororubber buffer pad are as follows: (1) Fluororubber preparation: The fluororubber formulation includes binary fluororubber FKM, ethyl acetate, thermal conductive agent, active magnesium oxide, calcium oxide, glass microspheres, matting agent, iron oxide red, vulcanizing agent and crosslinking agent. The fluororubber formulation is dissolved in a ratio of 1:2 of binary fluororubber FKM and ethyl acetate to obtain a fluororubber solution. Based on 100 parts of binary fluororubber FKM as the base weight, it also contains the following components: 60 parts of thermal conductive agent, 6 parts of active magnesium oxide, 50 parts of calcium oxide, 40 parts of glass microspheres, 20 parts of matting agent, 5 parts of iron oxide red, 5 parts of vulcanizing agent and 1.25 parts of crosslinking agent. The raw materials are respectively measured according to the amount. After mixing, add fluororubber solution to obtain fluororubber, and add the fluororubber to the processing equipment of the corresponding layer materials for later use; (2) Make fluororubber adhesive layer: take the first fabric, use the fluororubber in step (1) to dip and coat the first fabric, and heat treatment is required after each dip and coat treatment, and then roll it up to obtain fluororubber adhesive layer for later use; (3) Make fluororubber surface layer: take the second fabric, use the fluororubber in step (1) to scrape and coat at least one side of the second fabric, and then heat treatment is required, and then roll it up to obtain fluororubber surface layer for later use; (4) Make fluororubber expanded layer: take the third fabric, use the fluororubber in step (1) to coat the second fabric with the fluororubber solution in step (1), and then heat treatment is required, and then roll it up to obtain fluororubber surface layer for later use; The third fabric is dip-coated, and after each dip-coating, it is also heat-treated, and then rolled up to obtain the fluororubber expanded layer for later use; (5) Loading the rolls: The rolls of the fluororubber adhesive layer of step (2), the fluororubber surface layer of step (3), and the fluororubber expanded layer of step (4) are respectively placed at the feeding end of the equipment, and the fluororubber surface layer, fluororubber expanded layer, fluororubber adhesive layer, fluororubber expanded layer, fluororubber adhesive layer, fluororubber expanded layer, fluororubber adhesive layer, fluororubber expanded layer, fluororubber expanded layer, fluororubber adhesive layer, fluororubber expanded layer, fluororubber expanded layer, fluororubber adhesive layer, fluororubber expanded layer, fluororubber expanded layer, fluororubber adhesive layer, fluororubber expanded layer, fluororubber expanded layer, fluororubber adhesive layer, fluororubber expanded layer, fluororubber expanded layer, fluororubber adhesive layer, fluororubber expanded layer, fluororubber expanded layer, fluororubber surface layer are loaded in sequence according to the structural order of the fluororubber buffer pad. Align and stack the layers, then pass one end of each layer of material through the first traction part of the processing equipment through the composite part of the processing equipment, and pre-load it onto the second traction part of the processing equipment; (6) Material composite: Start the processing equipment, and through the cooperation of the first traction part and the second traction part of the processing equipment, pull the stacked layers of material in step (5) from the feed end of the composite part to the processing area of ​​the composite part for high-temperature composite to obtain strip-shaped fluororubber buffer material; (7) Material cutting: The processing equipment conveys the fluororubber buffer material from step (6) to the cutting part of the processing equipment through the second traction part, and cuts the fluororubber buffer material through the cutting part to obtain fluororubber buffer pad.

[0080] Further, the binary fluororubber FKM is crushed into granules with an irregular shape of 1-5 cm in size. In step (1), the binary fluororubber FKM and ethyl acetate are taken in proportion and then mixed at high speed in a mixer for 2 hours at a stirring speed of 2000 r / min. Afterward, the mixture is filtered through a 60-120 mesh filter to obtain a fluororubber solution. It can only be used after the solution is fully dissolved and there is no sediment at the bottom of the container. The binary fluororubber FKM is crushed using a crusher.

[0081] Furthermore, spherical alumina, activated magnesium oxide, calcium oxide, glass microspheres, matting agent, iron oxide red, DCP, and BPP (benzyltriphenylphosphine chloride, CAS 1100-88-5) are prepared by mixing each raw material in the specified proportions. Fluororubber solution is added to a mixer, and while stirring the fluororubber solution, thermal conductive agent, activated magnesium oxide, calcium oxide, glass microspheres, matting agent, iron oxide red, DCP, and BPP are added and mixed. The mixture is stirred for 30-60 minutes at a stirring speed of 550-1000 r / min. After filtering through a 60-120 mesh filter, fluororubber is obtained. It is used after ensuring that there are no agglomerates in the colloid.

[0082] Further, in step (2), the first fabric is first subjected to a secondary impregnation treatment with fluororubber at a speed of 8-10 m / min and a thickness of 0.25-0.35 mm. Then, it is subjected to a secondary high-temperature drying at 80-130°C for 1-10 min to obtain a fluororubber adhesive layer. The fluororubber adhesive layer is then wound up for later use. The high-temperature drying is performed using a vertical tunnel oven. The impregnation treatment is performed using an impregnation coating machine. Preferably, the first fabric is a 7628 face fabric with a yarn diameter of 9 μm and a basis weight of 2.14 g / m² before coating. 2 -3.54g / m 2 And the thickness is 0.2 to 0.285 mm.

[0083] Further, in step (3), fluororubber is uniformly coated onto one side of the second fabric with a coating thickness of 0.25–0.5 mm and a coating speed of 8–10 m / min. A second high-temperature drying process is then performed at 80–120°C for 1–10 min. The high-temperature drying is conducted using a horizontal tunnel oven, and the coating process is performed using a blade coating machine. Figure 2 As shown; preferably, the second fabric is a 7629 face fabric with a yarn diameter of 9µm, and the weight of the 7629 face fabric before coating is 2.46g / m². 2 And the thickness is 0.195mm.

[0084] Furthermore, the other side of the 7629 fabric undergoes a scraping coating process. The coating material is polyamide-imide, in which the amide and imide bonds in the polyamide-imide molecular chain form a coating on the 7629 fabric surface that integrates high temperature resistance, insulation, wear resistance, and corrosion resistance. Its operating temperature ranges from -195℃ to 230℃, with long-term use up to 220℃. This allows the fluororubber surface layer to maintain dimensional stability and tensile strength even at 220℃. The coating thickness is 0.25–0.5 mm, and the scraping speed is 8–10 m / min. A second high-temperature drying process is performed at 80–120℃ for 1–10 minutes, followed by winding up the fluororubber surface layer for later use. The high-temperature drying is conducted using a horizontal tunnel oven, while the scraping coating process utilizes a blade-type coating machine. Figure 2 As shown.

[0085] Further, in step (4), one side of the third fabric is first subjected to a secondary dip-coating treatment with fluororubber at a speed of 10-17 m / min and a coating thickness of 0.85-1 mm. Then, it is subjected to a secondary high-temperature drying at 80-120°C for 1-10 min. The other side of the third fabric is then subjected to a secondary dip-coating treatment with fluororubber at a speed of 1-10 m / min and a coating thickness of 0.9-1.5 mm. Then, it is subjected to a secondary high-temperature drying at 80-120°C for 1-10 min, obtaining a fluororubber expanded layer. The fluororubber expanded layer is then wound up for later use. The high-temperature drying is performed using a vertical tunnel oven. This dip-coating treatment is performed using a dip-coating machine, such as... Figure 1 As shown; preferably, the third fabric is a bulked glass fiber cloth with a yarn diameter of 6 μm and a basis weight of 8 g / m² before coating. 2 -8.94g / m 2 And the thickness is 0.88 to 0.91 mm.

[0086] Furthermore, in step (6), a laminating machine is used to perform high-temperature lamination on the stacked materials. The lamination temperature is 300℃, the lamination time is 400 seconds, and the lamination pressure is 25 kg / cm². 2 ,like Figure 3 As shown.

[0087] In addition, it should be noted that the weight of the fluororubber surface layer, the fluororubber expanded layer, and the fluororubber adhesive layer were determined by measuring with a balance, and the thickness of the fluororubber surface layer, the fluororubber expanded layer, and the fluororubber adhesive layer were determined by measuring with a micrometer.

[0088] Samples of the fluororubber cushioning pads prepared according to this invention were taken, with a sample size of 300×80mm. The samples were placed on a peel strength tester for tensile testing. Tensile tests were performed on the fluororubber cushioning pads using the peel strength tester, with the tensile force increasing sequentially. The maximum peak value and minimum trough value were read from each test. In sample one, the maximum peel force of the fluororubber cushioning pad during tensile testing was 84.059N, indicating complete peeling, and the minimum peel force was 74.735N, indicating the beginning of peeling. In sample two, the maximum peel force of the fluororubber cushioning pad was 95.917N. N represents the minimum peel force of 67.121 N, indicating that the fluororubber cushioning pad has completely peeled off, meaning that peeling has begun. In test sample three, the maximum peel force of the fluororubber cushioning pad was 139.925 N, indicating that the fluororubber cushioning pad has completely peeled off, while the minimum peel force was 105.818 N, indicating that peeling has begun. In test sample four, the maximum peel force of the fluororubber cushioning pad was 172.182 N, indicating that the fluororubber cushioning pad has completely peeled off, while the minimum peel force was 129.573 N, indicating that peeling has begun. The minimum peel force measured in each sample is greater than 60 N, which meets the production requirements.

[0089] The fluororubber cushioning pad was sampled at 300×80mm. After production in a PCB lamination vacuum high-temperature press, the fluororubber cushioning pad was quickly separated from the top cover plate by the automatic suction and adjustment machine. Similarly, when the automatic suction and adjustment machine removed the fluororubber cushioning pad, it was confirmed that it quickly separated from the bottom steel plate. After 1, 100, 200, 300, 400, and 500 uses, and up to 500 uses, slight visual changes were observed, with no significant color difference, meeting production requirements. Figure 4 As shown; the thickness change of the fluororubber cushioning pad sample was measured using a micrometer. Twelve measurement points were taken on the fluororubber cushioning pad sample, and each point was measured twice. After one use, the average thickness was 5.966 mm; after 100 uses, the average thickness was 5.761 mm; after 200 uses, the average thickness was 5.698 mm; after 300 uses, the average thickness was 5.633 mm; after 400 uses, the average thickness was 5.577 mm; and after 500 uses, the average thickness was 5.551 mm. The 6mm fluororubber cushioning pad showed an average thickness change within 0.415 mm after 500 uses, with the thickness specification change controlled within 10%. The thickness test was qualified, indicating that the fluororubber cushioning pad has good durability, with minimal thickness specification change even after multiple uses. Figure 5 , Figure 6 As shown.

[0090] The fluororubber cushioning pad was sampled at 1500×1295mm. After production in a PCB lamination vacuum high-temperature press, the fluororubber cushioning pad was quickly separated from the top cover plate by an automatic suction and adjustment machine. Similarly, it was quickly separated from the bottom steel plate by the automatic suction and adjustment machine. After 1, 100, 200, 300, 400, and 500 uses, the dimensional variation (R) of the fluororubber cushioning pad was measured at one point each on the left, center, and right sides of the long and short sides using a measuring tape. The maximum dimensional variation after 500 uses was 1mm, indicating a passing test. This demonstrates the good durability of the fluororubber cushioning pad, with minimal variation in length and width after multiple uses. Figure 7 As shown.

[0091] The fluororubber buffer pad was sampled at 1500×1295mm. After production in a PCB lamination vacuum high-temperature press, the fluororubber buffer pad was confirmed to quickly separate from the top cover plate when the automatic suction machine removed it. Similarly, the buffer pad was confirmed to quickly separate from the bottom steel plate when removed. After 1, 100, 200, 300, 400, and 500 uses (up to 500 uses), the temperature rise rate variation was within the range of 1.5-2.0℃ / min, indicating the test was successful. The fluororubber buffer pad demonstrated good durability, with minimal change in the temperature rise rate after multiple uses. Figure 8 As shown.

[0092] The fluororubber cushioning pad was sampled with dimensions of 1270×1000mm. The sample, along with a steel plate and lead strip, was placed in a press without heating. The pressure was 30kg / cm², and the pressing time was 180s. After 1, 100, 200, 300, 400, and 500 presses, the average cushioning capacity of the fluororubber cushioning pad was 1.07mm (17.7%) after 1 press; 1.03mm (17.6%) after 100 presses; 0.96mm (16.9%) after 200 presses; and [the text abruptly ends here, so the translation stops as well.] The average buffering capacity of the rubber cushioning pad is 0.9 mm, accounting for 16.05%. After 400 compressions, the average buffering capacity of the fluororubber cushioning pad is 0.9 mm, accounting for 16.07%. After 500 compressions, the average buffering capacity of the fluororubber cushioning pad is 0.85 mm, accounting for 15.5%. After 500 uses, the height of the fluororubber cushioning pad and the lead strip is measured with a micrometer. The buffering capacity percentage is ≥12%, which meets the test requirements. The fluororubber cushioning pad can quickly deform and absorb impact energy during compression, and it returns to its original shape after decompression due to its resilience. It remains stable within 1 to 500 use cycles. The fluororubber cushioning pad has excellent cushioning performance, such as... Figure 9 , Figure 10 As shown.

[0093] The fluororubber cushioning pad was sampled with dimensions of 517×577mm. Additionally, 24 sheets of brand-new kraft paper, also 517×577mm, were sampled. The fluororubber cushioning pad samples and the new kraft paper samples were then placed in an X-ray testing device to measure the expansion and contraction deviation value R. X After 1, 100, 200, 300, 400, and 500 uses, and up to 500 uses, the fluororubber buffer pad, after collecting X-ray target data, showed a shrinkage value within 0.05 mm, and the R value of the fluororubber buffer pad remained within 0.05 mm after one compression. X The thickness is 0.019 / 0.019mm, and the kraft paper R... X The value is 0.031 / 0.032, and the R value of the fluororubber buffer pad is [value missing] after 100 compression cycles. X The thickness is 0.017 / 0.017mm, and the kraft paper R... X The value is 0.028 / 0.023, and the R value of the fluororubber buffer pad is [value missing] after 200 compression cycles. X The thickness is 0.016 / 0.015mm, and the kraft paper R... X The value is 0.027 / 0.028, and the R value of the fluororubber buffer pad is [value missing] after 300 compression cycles. X The thickness is 0.015 / 0.024 mm for kraft paper. X The value is 0.029 / 0.026, and the R value of the fluororubber buffer pad is [value missing] after 400 compression cycles. X The thickness is 0.018 / 0.02mm, and the kraft paper R... X The value is 0.025 / 0.024, and the R value of the fluororubber buffer pad is [value missing] after 500 compression cycles. X The thickness is 0.02 / 0.023mm, and the kraft paper diameter is R. X The deviation R is 0.02 / 0.026, and the expansion / contraction deviation value is measured each time. X Fluororubber cushioning pads are all smaller than kraft paper cushioning pads. Fluororubber cushioning pads have better expansion and contraction properties than kraft paper cushioning pads, and the tests are passed. Figure 11 As shown.

[0094] The above description is merely a preferred embodiment of the present invention and is not intended to limit the scope of the present invention. Therefore, any equivalent changes or modifications made by those skilled in the art to the structure, features and principles of the present invention without departing from the spirit of the present invention should fall within the protection scope of the patent application of the present invention.

Claims

1. A method for processing a fluororubber cushioning pad, characterized in that: The fluororubber cushioning pad includes at least two fluororubber surface layers and at least one fluororubber expanded layer disposed between the two fluororubber surface layers. When there are two or more fluororubber expanded layers, each fluororubber expanded layer is connected to the others by a fluororubber adhesive layer. The processing steps of the fluororubber cushioning pad are as follows: (1) Fluororubber preparation: Fluororubber solution is prepared by dissolving binary fluororubber FKM with ethyl acetate in a ratio of 1:1.0 to 2. The solution also contains the following components based on 100 parts of binary fluororubber FKM: 20 to 60 parts of thermal conductive agent, 3 to 6 parts of active magnesium oxide, 10 to 50 parts of calcium oxide, 10 to 40 parts of glass microspheres, 5 to 20 parts of matting powder, 1 to 5 parts of iron oxide red, 1 to 5 parts of vulcanizing agent and 0.25 to 1.25 parts of crosslinking agent. The raw materials are prepared according to the specified amounts and then mixed with the fluororubber solution to obtain fluororubber. The fluororubber is then added to the processing equipment of the corresponding layer materials for later use. (2) Making the fluororubber adhesive layer: Take the first fabric and apply the fluororubber from step (1) to the first fabric for impregnation. After each impregnation treatment, heat treatment is required. Then roll it up to obtain the fluororubber adhesive layer for later use. (3) Making the fluororubber surface layer: Take the second fabric, apply the fluororubber from step (1) to at least one side of the second fabric, then heat it, and then roll it up to obtain the fluororubber surface layer for later use. (4) Making the fluororubber expanded layer: Take the third fabric and apply the fluororubber from step (1) to the third fabric for impregnation. After each impregnation treatment, heat treatment is required. Then roll it up to obtain the fluororubber expanded layer for later use. (5) Loading the rolls: The rolls of fluororubber adhesive layer from step (2), fluororubber surface layer from step (3), and fluororubber expanded layer from step (4) are respectively placed at the feeding end of the equipment. The fluororubber adhesive layer, fluororubber surface layer, and fluororubber expanded layer are aligned and stacked according to the structural sequence of the fluororubber buffer pad. When there are two or more fluororubber expanded layers, at least one fluororubber adhesive layer is also required at the feeding end. The fluororubber adhesive layer is placed between the two fluororubber expanded layers. Then, one end of each stacked layer of material is passed through the first traction part of the processing equipment through the composite part of the processing equipment and pre-loaded onto the second traction part of the processing equipment. (6) Material compounding: Start the processing equipment, and through the cooperation of the first traction part and the second traction part of the processing equipment, the superimposed layers of material in step (5) are drawn from the feed end of the compounding part to the processing area of ​​the compounding part at a fixed length, and high temperature compounding is carried out to obtain strip-shaped fluororubber buffer material. (7) Material cutting: The processing equipment conveys the fluororubber buffer material from step (6) to the cutting section of the processing equipment through the second traction part. The cutting section cuts the fluororubber buffer material to obtain the fluororubber buffer pad.

2. The method for processing a fluororubber cushioning pad according to claim 1, characterized in that: In step (1), the binary fluororubber FKM and ethyl acetate are taken in proportion and mixed at high speed in a mixer for 1.5-2 hours at a stirring speed of 550-2000 r / min. Then, the mixture is filtered through a 60-120 mesh filter to obtain a fluororubber solution.

3. The method for processing a fluororubber cushioning pad according to claim 2, characterized in that: The thermal conductive agent, active magnesium oxide, calcium oxide, glass microspheres, matting powder, iron oxide red, vulcanizing agent, and crosslinking agent are each taken in the specified proportions and mixed. Fluororubber solution is added to a mixer, and while stirring the fluororubber solution, the thermal conductive agent, active magnesium oxide, calcium oxide, glass microspheres, matting powder, iron oxide red, vulcanizing agent, and crosslinking agent are added and mixed. The mixture is stirred for 30-60 minutes at a stirring speed of 550-1000 r / min. After filtration through a 60-120 mesh filter, fluororubber is obtained.

4. The method for processing a fluororubber cushioning pad according to claim 1, characterized in that: In step (2), the first fabric is first dip-coated with fluororubber at least once, with a dip-coating speed of 8-10 m / min and a dip-coating thickness of 0.25-0.35 mm. Then, it is dried at least once at a high temperature of 80-130°C for 1-10 min to obtain a fluororubber adhesive layer. The fluororubber adhesive layer is then wound up for later use. The first fabric is a 7628 face fabric with a yarn diameter of 9 μm. The high-temperature drying is carried out in a vertical tunnel oven. The dip-coating process is carried out using a dip-coating machine.

5. The method for processing a fluororubber cushioning pad according to claim 1, characterized in that: In step (3), the fluororubber surface layer is uniformly coated on one side of the second fabric with fluororubber, the coating thickness is 0.25-0.5 mm, the coating speed is 8-10 m / min, and it is dried at least once at a high temperature of 80-120℃ for 1-10 min to obtain the fluororubber surface layer. The fluororubber surface layer is then rolled up for later use. The second fabric is 7629 fabric with a yarn diameter of 9 μm. The high temperature drying is carried out in a horizontal tunnel oven, and the coating process is carried out using a doctor blade coating machine.

6. The method for processing a fluororubber cushioning pad according to claim 1, characterized in that: In step (4), one side of the third fabric is first dip-coated with fluororubber at least once, with a dipping speed of 10-17 m / min and a dipping thickness of 0.85-1 mm. Then, it is dried at a high temperature of 80-120°C at least once, with a drying time of 1-10 min. The other side of the third fabric is then dip-coated with fluororubber at least once, with a dipping speed of 1-10 m / min and a dipping thickness of 0.9-1.5 mm. Then, it is dried at a high temperature of 80-120°C at least once, with a drying time of 1-10 min, to obtain a fluororubber expanded layer. The fluororubber expanded layer is then wound up for later use. The third fabric is made of expanded glass fiber cloth with a yarn diameter of 6 μm. The high-temperature drying is carried out in a vertical tunnel oven. The dipping coating process is carried out using a dip-coating machine.

7. The method for processing a fluororubber cushioning pad according to claim 1, characterized in that: In step (6), a laminating machine is used to perform high-temperature lamination on the stacked materials. The lamination temperature is 200–300°C, the lamination time is 100–500 seconds, and the lamination pressure is 5–25 kg / cm². 2 .

8. A method for processing a fluororubber cushioning pad according to claim 1, characterized in that: The thermal conductive agent is at least one of spherical alumina, boron nitride, or zinc oxide.

9. A method for processing a fluororubber cushioning pad according to claim 1, characterized in that: The vulcanizing agent is at least one of bisphenol AF, bisphenol S, bisphenol A, bisphenol AP, DCP, and BIPB; the crosslinking agent is at least one of BPP (benzyltriphenylphosphine chloride, CAS1100-88-5), tetrabutylphosphine chloride, tetrabutylphosphine bromide, and triphenylethylphosphine bromide.

10. A method for processing a fluororubber cushioning pad according to claim 5, characterized in that: The other side of the 7629 fabric is coated with a scraping coating. The coating material is at least one of polyimide, polypyrrolidone tetracarboxylate, polyetherimide, and polyamide-imide. The coating thickness is 0.25-0.5 mm, the coating speed is 8-10 m / min, and it is dried at least once at a high temperature of 80-120°C for 1-10 min. Then the fluororubber surface layer is rolled up for later use. The high temperature drying is carried out in a horizontal tunnel oven, and the scraping coating is carried out using a scraper coating machine.

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