Manufacturing method of low-resistance high-trapping-efficiency glass filtering material

Abstract

The invention discloses a manufacturing method of a low-resistance high-trapping-efficiency glass filtering material, which comprises the following steps: step 1, preparing an adhesive: selecting the type of the adhesive, mixing and stirring the adhesive to obtain the required adhesive, and placing the adhesive in a dip coating machine for later use; step 2, preparing glass fibers: heating a specific glass raw material to proper temperature, pressure and humidity conditions so that the glass raw material becomes soft and is easy to wiredraw, and mixing and stirring the glass raw material into slurry; step 3, preparing a finished product: preparing the slurry in the step 2 into a filter material according to an existing wet papermaking forming method, and enabling the filter material to sequentially pass through three groups of drying cylinders; step 4, detecting the finished product; and step 5, packaging and warehousing. Materials are cheap and easy to obtain, production is simple, manufacturing is easy, the production process is environment-friendly, pollution is avoided, and after being discarded, the material is directly landfilled and treated in the same mode as sand; the material and the structure are firm in structure, low in resistance, high in filtering efficiency, water-resistant, high-temperature-resistant, steam-resistant and excellent in flame-retardant effect.

Description

Technical Field

[0001] The present invention relates to the technical field of filter materials, and specifically to a manufacturing method of a glass filter material with low resistance and high capture efficiency. Background Art

[0002] The technical solutions for the filter element materials of range hoods include metal materials such as aluminum, stainless steel or galvanized steel, which are durable and corrosion-resistant and suitable for high-end products. The plant fiber filter elements have low cost, are convenient for replacement and disposal, and reduce the cleaning requirements. The synthetic or organic fiber filter elements can be used once or repeatedly, have physical and chemical adsorption capabilities, and have a long service life. The nanofiber materials are suitable for high-temperature cleaning and high-efficiency filtration. The activated carbon filter elements can effectively adsorb grease and odors. The rust-proof materials or surface treatment technologies improve the durability and maintenance convenience of the filter elements. When selecting filter element materials, the design of the range hood, service life and user habits need to be considered.

[0003] The structural technical solutions include a multi-layer adsorbent material structure, an ionization wire tensioning structure, a filter element structure convenient for disassembly, and a filter element electrode plate structure. These designs aim to improve the filtration efficiency, facilitate installation and disassembly, and extend the service life.

[0004] However, the traditional filter materials have the following disadvantages:

[0005] (1) For the existing filter materials of range hoods using metal aluminum mesh, although the structure is firm, fireproof and has low resistance, the filtration efficiency is extremely low, and the oil capture efficiency is less than 20%; or non-woven fabric materials / paper materials, although the filtration efficiency can be greater than 70%, the resistance increases rapidly, the service life is short, and they are not fireproof, and the structure is prone to collapse;

[0006] (2) The existing filter materials of range hoods have high cost, complex manufacturing processes, are not environmentally friendly during the production process, and generate toxic and harmful gases; the waste filters are not environmentally friendly and require special classification for treatment;

[0007] (3) In terms of the performance of the existing filter materials of range hoods, the structure is complex, the installation and use are inconvenient, the durability is poor, the filtration efficiency is not high, the service life ends quickly, and the cleaning is inconvenient. Summary of the Invention

[0008] The purpose of the present invention is to provide a manufacturing method of a glass filter material with low resistance and high capture efficiency to solve the problems raised in the above background art.

[0009] To achieve the above purpose, the present invention provides the following technical solutions: A manufacturing method of a glass filter material with low resistance and high capture efficiency, including the following steps:

[0010] Step 1, prepare the adhesive: Select the type of adhesive and mix and stir it to obtain the required adhesive, and place the adhesive in the lift coating machine for standby;

[0011] Step 2: Prepare glass fibers: Use specific glass raw materials, heat them to appropriate temperature, pressure and humidity conditions to make them soft and easy to draw into filaments, mix and stir into a pulp;

[0012] Step 3: Prepare the finished product: Make the pulp in Step 2 into a filter material by the existing wet papermaking forming method, pass the filter material through three groups of drying cylinders in sequence to dry the filter material, coat the adhesive and inorganic flame retardant prepared in Step 1 on both sides of the dried filter material, and pass through two groups of drying cylinders in sequence to dry the filter material so that the water content of the dried filter material is less than 5%;

[0013] Step 4: Inspect the finished product: Inspect the performance indicators of the prepared finished product;

[0014] Step 5: Package and store in warehouse: Package the qualified low-resistance and high-trapping-efficiency glass filter material to ensure that it is not damaged during transportation and storage, and then store it in the warehouse for waiting to be sold or used out of the warehouse.

[0015] As a preferred technical solution of the present invention, the glass raw materials in Step 2 are specifically glass particles or glass rods.

[0016] As a preferred technical solution of the present invention, the glass fibers in Step 2 include the following raw materials in parts by mass: 10-20 parts of E-glass fiber, 10-20 parts of C-glass fiber, 10-20 parts of A-glass fiber, 10-20 parts of E-CR glass fiber, 10-20 parts of D-glass fiber, 10-20 parts of S-glass fiber and 10-20 parts of AR-glass fiber.

[0017] As a preferred technical solution of the present invention, the temperature in Step 2 is based on the melting of glass fibers. The melting of glass fibers refers to the process in which the batch material undergoes silicate reaction, melting and then transforms into a homogeneous glass melt at high temperature. The specific melting temperature depends on the raw materials used and the production process, and the melting temperature of the glass is between 1000°C and 2000°C.

[0018] As a preferred technical solution of the present invention, the pressure in Step 2 is based on that for the preparation process of high melting point glass fiber products, the flame method is commonly used for wire drawing production. In this process, the pressure of oxygen introduced into the oxygen pipe is 0.06-0.1 MPa, and the pressure of gas introduced into the gas pipe is 0.06-0.1 MPa.

[0019] As a preferred technical solution of the present invention, the adhesive in the first step comprises raw materials in the following parts by mass: 5 parts - 20 parts of silicone sealant, 10 parts - 20 parts of polyurethane sealant, 10 parts - 20 parts of acrylic sealant, 5 parts - 30 parts of modified polymer sealant, 15 parts - 30 parts of silicone sealant, 10 parts - 20 parts of epoxy resin adhesive, and 10 parts - 20 parts of modified silane sealant.

[0020] As a preferred technical solution of the present invention, the performance indicators in the second step are specifically air permeability, tensile strength, elongation at break, water resistance, high temperature resistance, steam resistance, and flame retardancy.

[0021] As a preferred technical solution of the present invention, the finished product inspection in the fourth step mainly conducts a comprehensive performance test on the prepared glass filter material with low resistance and high capture efficiency to ensure that its quality meets the standards; during the inspection process, in strict accordance with industry standards or internal enterprise standards, key performance indicators such as air permeability, tensile strength, elongation at break, water resistance, high temperature resistance, steam resistance, and flame retardancy will be tested one by one to ensure the stability and reliability of the product; if any unqualified items are found during the inspection, the production process will be immediately traced to find the root cause of the problem, and timely adjustments and optimizations will be made to ensure that the products produced subsequently can all meet the high-quality requirements.

[0022] As a preferred technical solution of the present invention, the packaging material in the fifth step is selected as an environmentally friendly and degradable material to reduce the impact on the environment; at the same time, strict moisture-proof and dust-proof treatments will be carried out during the packaging process to ensure that the quality of the product is not damaged during storage and transportation; in addition, the production date, batch number, and specification model information of the product will be clearly marked on the packaging for easy traceability and management.

[0023] Compared with the prior art, the beneficial effects of the present invention are:

[0024] 1. The materials are cheap and easily available, the production is simple and easy to manufacture, the production process is environmentally friendly without pollution, and after being discarded, it can be directly landfilled, treated in the same way as sand;

[0025] 2. The structure of this material and structure is firm, with low resistance and high filtration efficiency, water resistance, high temperature resistance, steam resistance, and excellent flame retardancy effect;

[0026] 3. Made of fiberglass material, it is fireproof and ensures the stiffness of the filter; a multi-level three-dimensional combination structure of thick and thin fibers is adopted within one layer, and through the program design of the production process, a multi-level sandwich structure with two high-density skins or a high-density center layer is generated to ensure low resistance and high filtration efficiency;

[0027] 4. Adopt a special water-based adhesive formula to ensure that the product structure remains unchanged at a high temperature of 200 degrees Celsius, and can withstand a high-humidity environment of 100 degrees Celsius steam without undergoing hydrolysis reactions to damage the structure. Moreover, there are no harmful gases such as formaldehyde and VOC, meeting the requirements of green environmental protection.

[0028] 5. Adopt special inorganic flame retardant components to ensure that in extreme cases (coated with 200 g / m 2 ), the fire will be extinguished within 3 seconds and the overfire area is less than 10 cm 2 . At the same time, unlike ordinary phosphorus-nitrogen flame retardants, although it ensures the above fire prevention performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 is a flowchart of the present invention;

[0030] Figure 2 is a diagram of the glass fiber filter oil capture test equipment of the present invention;

[0031] Figure 3 is a flowchart of the formaldehyde test of the glass fiber filter of the present invention;

[0032] Figure 4 is a result diagram of the formaldehyde test of the glass fiber filter of the present invention;

[0033] Figure 5 is a flowchart of the pressure loss test of the glass fiber filter of the present invention;

[0034] Figure 6 is a result diagram of the pressure loss test of the glass fiber filter of the present invention;

[0035] Figure 7 is a flowchart of the caving test of the glass fiber filter of the present invention;

[0036] Figure 8 is a flowchart of the combustion test of the glass fiber filter of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0037] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0038] Please refer to Figure 1-8 , the present invention provides a manufacturing method for a glass filter material with low resistance and high capture efficiency, including the following steps:

[0039] Step 1. Prepare the adhesive: Select the type of adhesive, mix and stir it to obtain the required adhesive, and place the adhesive in the lift coating machine for standby;

[0040] Step 2. Prepare the glass fiber: Use specific glass raw materials, heat them to appropriate temperature, pressure and humidity conditions to make them soft and easy to draw into filaments, and mix and stir them into a slurry;

[0041] Step 3. Prepare the finished product: Make the slurry in Step 2 into a filter material by the existing wet papermaking forming method, pass the filter material through three groups of drying cylinders in sequence to dry the filter material, coat the adhesive and inorganic flame retardant prepared in Step 1 on both sides of the dried filter material, and pass through two groups of drying cylinders in sequence to dry the filter material, so that the water content of the dried filter material is less than 5%;

[0042] Step 4. Inspect the finished product: Inspect the performance indicators of the required finished product;

[0043] Step 5. Package and store in warehouse: Package the qualified low-resistance and high-trapping-efficiency glass filter material to ensure that it is not damaged during transportation and storage, and then store it in the warehouse for waiting to be sold or used after leaving the warehouse.

[0044] The glass raw material in Step 2 is specifically glass particles or glass rods.

[0045] The glass fiber in Step 2 includes the following raw material components in parts by mass: 10-20 parts of E-glass fiber, 10-20 parts of C-glass fiber, 10-20 parts of A-glass fiber, 10-20 parts of E-CR glass fiber, 10-20 parts of D-glass fiber, 10-20 parts of S-glass fiber, and 10-20 parts of AR-glass fiber.

[0046] The temperature in Step 2 is based on the melting of the glass fiber. The melting of the glass fiber refers to the process in which the batch material undergoes silicate reaction, melting and then transforms into a homogeneous glass melt at high temperature. The specific melting temperature depends on the raw materials used and the production process, and the melting temperature of the glass is between 1000°C and 2000°C.

[0047] The pressure in Step 2 is based on the common preparation process for high melting point glass fiber products, which is to use the flame method for wire drawing production. In this process, the pressure of the oxygen introduced into the oxygen pipe is 0.06-0.1 MPa, and the pressure of the gas introduced into the gas pipe is 0.06-0.1 MPa.

[0048] In Step 1, the adhesive is composed of the following raw materials in parts by mass: 5 - 20 parts of silicone sealant, 10 - 20 parts of polyurethane sealant, 10 - 20 parts of acrylic sealant, 5 - 30 parts of modified polymer sealant, 15 - 30 parts of silicone sealant, 10 - 20 parts of epoxy resin adhesive, and 10 - 20 parts of modified silane sealant.

[0049] In Step 2, the performance indicators are specifically air permeability, tensile strength, elongation at break, water resistance, high temperature resistance, steam resistance, and flame retardancy.

[0050] In Step 4, the finished product inspection mainly conducts a comprehensive performance test on the prepared low - resistance and high - capture - efficiency glass filter material to ensure its quality meets the standards; during the inspection process, in strict accordance with industry standards or enterprise internal standards, key performance indicators such as air permeability, tensile strength, elongation at break, water resistance, high temperature resistance, steam resistance, and flame retardancy are tested one by one to ensure the stability and reliability of the product; if any unqualified items are found during the inspection, the production process will be immediately traced to find the root cause of the problem, and timely adjustments and optimizations will be made to ensure that the products produced subsequently can all meet the high - quality requirements.

[0051] In Step 5, environmentally friendly and degradable materials are selected as packaging materials to reduce the impact on the environment; at the same time, strict moisture - proof and dust - proof treatments are carried out during the packaging process to ensure that the quality of the product is not damaged during storage and transportation; in addition, the production date, batch number, and specification model information of the product will be clearly marked on the packaging for easy traceability and management.

[0052] Example 1:

[0053] In the present invention, the type of adhesive is selected and mixed and stirred to obtain the required adhesive. Among them, there are 20 parts of silicone sealant, 10 parts of polyurethane sealant, 10 parts of acrylic sealant, 5 parts of modified polymer sealant, 15 parts of silicone sealant, 20 parts of epoxy resin adhesive, and 20 parts of modified silane sealant; specific glass raw materials are used, and by heating to appropriate temperature, pressure, and humidity conditions, it becomes soft and easy to draw to obtain the required glass fiber, and its performance indicators are detected; among them, there are 10 parts of E - glass fiber, 10 parts of C - glass fiber, 10 parts of A - glass fiber, 10 parts of E - CR glass fiber, 20 parts of D - glass fiber, 20 parts of S - glass fiber, and 20 parts of AR - glass fiber. The slurry is made into a filter material by the existing wet - process papermaking forming method. The filter material passes through three groups of drying cylinders in sequence to dry the filter material. The adhesive and inorganic flame retardant prepared in Step 1 are coated on both sides of the dried filter material and then pass through two groups of drying cylinders in sequence to dry the filter material so that the water content of the dried filter material is less than 5%. The performance indicators of the prepared finished product are detected.

[0054] Example 2:

[0055] In the present invention, the type of adhesive is selected and mixed and stirred to obtain the required adhesive. Among them, there are 10 parts of silicone sealant, 10 parts of polyurethane sealant, 10 parts of acrylic sealant, 10 parts of modified polymer sealant, 30 parts of silicone sealant, 20 parts of epoxy resin adhesive, and 10 parts of modified silane sealant; specific glass raw materials are used, and by heating to appropriate temperature, pressure and humidity conditions, it becomes soft and easy to draw to obtain the required glass fiber, and its performance indicators are detected; among them, there are 20 parts of E-glass fiber, 20 parts of C-glass fiber, 20 parts of A-glass fiber, 10 parts of E-CR glass fiber, 10 parts of D-glass fiber, 10 parts of S-glass fiber, and 10 parts of AR-glass fiber. The slurry is made into a filter medium according to the existing wet papermaking forming method. The filter medium is passed through three groups of drying cylinders in sequence to dry the filter medium, and the adhesive and inorganic flame retardant prepared in step one are coated on both sides of the dried filter medium, and then passed through two groups of drying cylinders in sequence to dry the filter medium, so that the water content of the dried filter medium is less than 5%, and the performance indicators of the required finished product are detected.

[0056] Example 3:

[0057] In the present invention, the type of adhesive is selected and mixed and stirred to obtain the required adhesive. Among them, there are 20 parts of silicone sealant, 10 parts of polyurethane sealant, 10 parts of acrylic sealant, 10 parts of modified polymer sealant, 30 parts of silicone sealant, 10 parts of epoxy resin adhesive, and 10 parts of modified silane sealant; specific glass raw materials are used, and by heating to appropriate temperature, pressure and humidity conditions, it becomes soft and easy to draw to obtain the required glass fiber, and its performance indicators are detected; among them, there are 10 parts of E-glass fiber, 20 parts of C-glass fiber, 20 parts of A-glass fiber, 20 parts of E-CR glass fiber, 10 parts of D-glass fiber, 10 parts of S-glass fiber, and 10 parts of AR-glass fiber. The slurry is made into a filter medium according to the existing wet papermaking forming method. The filter medium is passed through three groups of drying cylinders in sequence to dry the filter medium, and the adhesive and inorganic flame retardant prepared in step one are coated on both sides of the dried filter medium, and then passed through two groups of drying cylinders in sequence to dry the filter medium, so that the water content of the dried filter medium is less than 5%, and the performance indicators of the required finished product are detected.

[0058] Example 4:

[0059] In the present invention, an adhesive type is selected and mixed and stirred to obtain the required adhesive, wherein there are 20 parts of silicone sealant, 10 parts of polyurethane sealant, 10 parts of acrylic sealant, 5 parts of modified polymer sealant, 25 parts of silicone sealant, 20 parts of epoxy resin adhesive, and 10 parts of modified silane sealant; specific glass raw materials are used, and by heating to appropriate temperature, pressure, and humidity conditions, it becomes soft and easy to draw into filaments to obtain the required glass fibers, and their performance indicators are detected; among them, there are 10 parts of E-glass fiber, 20 parts of C-glass fiber, 10 parts of A-glass fiber, 10 parts of E-CR glass fiber, 10 parts of D-glass fiber, 20 parts of S-glass fiber, and 20 parts of AR-glass fiber. The slurry is made into a filter medium according to the existing wet papermaking forming method. The filter medium is passed through three groups of drying cylinders in sequence to dry the filter medium. The adhesive and inorganic flame retardant prepared in step one are coated on both sides of the dried filter medium, and then passed through two groups of drying cylinders in sequence to dry the filter medium, so that the water content of the dried filter medium is less than 5%. The performance indicators of the required finished product are detected.

[0060] Example 5:

[0061] In the present invention, an adhesive type is selected and mixed and stirred to obtain the required adhesive, wherein there are 20 parts of silicone sealant, 10 parts of polyurethane sealant, 15 parts of acrylic sealant, 10 parts of modified polymer sealant, 15 parts of silicone sealant, 20 parts of epoxy resin adhesive, and 20 parts of modified silane sealant; specific glass raw materials are used, and by heating to appropriate temperature, pressure, and humidity conditions, it becomes soft and easy to draw into filaments to obtain the required glass fibers, and their performance indicators are detected; among them, there are 10 parts of E-glass fiber, 20 parts of C-glass fiber, 10 parts of A-glass fiber, 20 parts of E-CR glass fiber, 10 parts of D-glass fiber, 10 parts of S-glass fiber, and 20 parts of AR-glass fiber. The slurry is made into a filter medium according to the existing wet papermaking forming method. The filter medium is passed through three groups of drying cylinders in sequence to dry the filter medium. The adhesive and inorganic flame retardant prepared in step one are coated on both sides of the dried filter medium, and then passed through two groups of drying cylinders in sequence to dry the filter medium, so that the water content of the dried filter medium is less than 5%. The performance indicators of the required finished product are detected.

[0062] The wire drawing process of glass fiber requires the use of specific glass raw materials, which are usually glass particles or glass rods. By heating to an appropriate temperature, they become soft and easy to draw. The main components of glass fiber include silicon dioxide, and also contain various oxides such as aluminum oxide, calcium oxide, magnesium oxide, boron oxide, and sodium oxide. Different components and proportions determine the performance and application fields of glass fiber. The choice of adhesive should be determined according to the specific application environment, the type of bonding material, and the required performance characteristics. For example, for joints that need to withstand large displacements or deformations, a sealant with better flexibility and stretchability needs to be selected. For applications directly exposed to sunlight and harsh weather conditions, an adhesive with stronger weather resistance and UV resistance needs to be selected. Humidity conditions are also very important in the production process of glass fiber, especially in the stage of drying the raw yarn. The purpose of drying the raw yarn is to remove the moisture in the raw yarn cake and reduce its moisture content to the specified index. The drying temperature ranges from 120 to 13�, and the drying time is 8 to 18 hours. The factors affecting the drying of glass fiber raw yarn include temperature, air volume, and relative humidity. Usually, the raw yarn takes a long time to go through various processes such as wire drawing, warping, sizing, and weaving. Therefore, only natural drying is required to meet the requirements of the production process and products. It should be noted that the specific processing temperature, pressure, and humidity conditions will vary according to factors such as production facilities, raw material characteristics, product specifications, and production efficiency;

[0063] Combined with the attached instructions Figure 2 , weigh and record the weights of the glass fiber filter screen and the filter frame, and make left and right markings. Install the filter screen on the corresponding frame, fix it, and ensure that the red marking is in the correct direction. When installing the filter screen, first hold the upper part of the range hood, and then put in the lower part, ensuring that the wire rack faces outwards. After installation, use an anemometer to measure the wind speed, record the maximum, minimum, and average values. Weigh the paper towel, fix it around the test bench, heat the oil and water to 350℃, record the pressure loss, and start the test. Record the oil and water supply and pressure loss data every 5 minutes. After 30 minutes, end the test, turn off the equipment, measure the wind speed again, and record it. Weigh the wiped paper towel, calculate the amount of scattered oil, and finally calculate the oil capture efficiency. The results are 77.49%, 76.63%, and 74.13% respectively;

[0064] Combined with the attached instructions Figure 3, Along the edge of a 150×50 mm cardboard, use a utility knife to cut out 10 pieces of fiberglass filter screens with dimensions of 150×50 mm, and mark the name and number of each fiberglass filter screen with a marker pen. Then, evenly apply Vaseline to the edge of the glass desiccator lid to ensure that the desiccator is sealed without leakage. Place the three samples into three corresponding marked glass desiccators respectively. Vertically place 4 pieces of fiberglass filter screens at the bottom edge of each desiccator, place 3 pieces horizontally above them, and place 3 pieces in the middle, ensuring no overlap so that there is sufficient space for formaldehyde gas to be released. Cover the lid and seal it, tighten it with a silicone stopper, and let it stand for 24 hours. After 24 hours, turn on the formaldehyde detection instrument. After evacuating for 10 minutes, use a formaldehyde detector to detect the content. The purpose of evacuating for 10 minutes is to remove the residual formaldehyde gas in the pipeline. Select an appropriate measurement time: If the concentration is relatively low (0 - 0.4 PPM), select No.008 on the instrument, about 30 minutes; if the concentration is relatively high (0 - 1 PPM), then select No.009, about 15 minutes. Quickly and tightly insert the catheter with a silicone stopper into the glass desiccator, trying to avoid gas escape. Wait for the final reading of the formaldehyde detection instrument and record the result, in combination with the attached Figure 4 , After the current product was detected for 15 minutes in No.009, the result still exceeded the instrument detection range, >1 PPM; while after the sample was detected for 30 minutes in No.008, the result was 0.095 PPM;

[0065] in combination with the attached Figure 5 , Cut the fiberglass filter screen along the cardboard edge to make its size reach 215×215 mm, and mark the sample name and number on the filter screen. Place the cut sample into the fixture according to the marked direction, and then place the fixture on the pressure loss detection instrument. Tighten the screws around to fix the fixture. Turn on the instrument switch, and set the electronic voltage regulator to 0.86 mV, 1.79 mV, 2.16 mV, 2.72 mV, 3.65 mV, 4.58 mV. These settings correspond to face air velocities of 0.5 m / s, 1.0 m / s, 1.2 m / s, 1.5 m / s, 2.0 m / s, 2.5 m / s respectively. Then record the pressure loss value shown on the right side of the pressure loss meter, and refer to the attached Figure 6 , It can be found that the pressure loss situation of the product is slightly higher than that of the fiberglass sample of the existing exhaust fan, but still meets the product standard;

[0066] in combination with the attached Figure 7, cut the fiberglass filter mesh according to the size of the cardboard to make it reach the specification of 150*80mm, and make arrow marks in the direction of the fiberglass filament diameter. At the same time, ensure that the name and number of the fiberglass filter mesh sample are clearly marked. Then, add 1 liter of boiling water to the boiling water pot, and place the boiling water pot with a perforated partition (the perforated partition is a standard accessory in the boiling water pot) into it. Clamp the two fiberglass filter mesh samples (a total of 4 pieces) on two ropes respectively and hang them above the perforated partition. Subsequently, cover the lid of the boiling water pot, place the boiling water pot on the electric stove, turn on the electric stove and adjust it to a power of 600W; after boiling for 2 hours, turn off the electric stove and remove the boiling water pot, open the lid, and let it cool naturally on the platform. Observe whether there is any phenomenon of collapse or moisture absorption and stickiness of each fiberglass filter mesh sample. After the 2-hour boiling water experiment, the two samples in the longitudinal and transverse directions provided by the prior art both maintained good appearance shapes, and no problem of fiberglass filament shedding or stickiness was found. However, the two samples in the longitudinal and transverse directions provided showed serious deformation in appearance after the experiment, a large amount of shedding occurred between the fiberglass filaments, and the phenomenon of moisture absorption and stickiness was also very significant;

[0067] Combined with the attached instruction Figure 8, first, cut the fiberglass filter mesh to the required specifications according to the size of the cardboard, and mark the sample name and number on each piece of fiberglass filter mesh. Then, weigh and record the weight of each piece of fiberglass filter mesh one by one. Next, pour an appropriate amount of Nissin oil into a clean tray to ensure that the amount of oil is sufficient to completely cover the fiberglass filter mesh. Immerse the cut fiberglass filter mesh into the oil, gently press it by hand to promote the penetration of the oil, and smear it to the oil-free area. Flip the fiberglass filter mesh and repeat the above operations until it is completely soaked. After completion, use a clip to hold one corner of the fiberglass filter mesh and hang it on the upper rack, ensuring that the rack is directly above the tray. Hang the oil-coated fiberglass filter mesh on the rack for 90 minutes. After 90 minutes, remove the fiberglass filter mesh and wipe the bottom corner with a clean cloth to remove the oil beads. Then, lay the fiberglass filter mesh flat on the workbench surface covered with a clean towel. According to the oil coating situation, for the areas with more oil beads, gently press to remove the excess oil. Next, place the fiberglass filter mesh on an electronic balance to weigh it. If the amount of oil exceeds the standard (the oil coating amount for a 297*240mm sample should be 11g; the oil coating amount for a 340*240mm sample should be 13g), then repeat step a to remove the excess oil to meet the standard. If it is found that the amount of oil is insufficient, dip a small brush into an appropriate amount of oil and gently brush it on the edge of the tray or the cloth surface to remove the excess oil and ensure uniform oil coating. When brushing, ensure that both sides of the fiberglass filter mesh are evenly coated. Weigh the weight of each oil-coated fiberglass filter mesh and record it. Hang the oil-coated fiberglass filter meshes on the rack in sequence until all samples are oil-coated. Subsequently, place the oil-coated fiberglass filter mesh into the fixture in the combustion chamber, ensure that the sample is located at the center position of the fixture, close the fixture, turn on the power of the combustibility tester, press the SELECT key to adjust to the flame height adjustment display, and then press the GASS supply key to adjust the flame height to 45mm, ensuring that the flame is yellow. Set the test parameters (heating time 60 seconds), and let the instrument preheat for 10 minutes to stabilize the gas flow. Place the fixture into the combustion test instrument, press the SELECT key to switch to the "test" state (the test indicator light is red), and then press the GASS supply key and the heating start key. When it is observed that the fiberglass filter mesh catches fire or the flame tilts, press the "heating start key after ignition" to start the timer. When the flame begins to go out, press the "afterglow stop" and "remaining personnel stop" keys, and record the afterglow time and the remaining personnel time. Remove the fiberglass filter mesh, measure the burned size with a steel ruler and record it. Finally, calculate the combustion performance of the fiberglass filter mesh according to the formula.

[0068] Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A manufacturing method of a glass filter material with low resistance and high collection efficiency, characterized in that, It includes the following steps: Step 1, preparing the adhesive: Select the type of adhesive and mix and stir it to obtain the required adhesive, and place the adhesive in the lift coating machine for standby; Step 2, preparing the glass fiber: Use specific glass raw materials, and by heating to appropriate temperature, pressure and humidity conditions, make it soft and easy to draw wire, mix and stir into pulp; Step 3, preparing the finished product: Make the pulp in Step 2 into a filter medium according to the existing wet papermaking forming method, pass the filter medium through three groups of drying cylinders in sequence to dry the filter medium, coat the adhesive and inorganic flame retardant prepared in Step 1 on both sides of the dried filter medium, and pass through two groups of drying cylinders in sequence to dry the filter medium, so that the water content of the dried filter medium is less than 5%; Step 4, testing the finished product: Test the performance indicators of the prepared required finished product; Step 5, packaging and warehousing: Package the qualified low-resistance and high-trapping-efficiency glass filter material to ensure that it is not damaged during transportation and storage, and then store it in the warehouse, waiting for outbound sales or use.

2. The manufacturing method of the low-resistance and high-trapping-efficiency glass filter material according to claim 1, wherein: The glass raw material in Step 2 is specifically glass particles or glass rods.

3. The manufacturing method of the low-resistance and high-trapping-efficiency glass filter material according to claim 1, characterized in that: The glass fiber in Step 2 includes the following raw material components in parts by mass: 10-20 parts of E-glass fiber, 10-20 parts of C-glass fiber, 10-20 parts of A-glass fiber, 10-20 parts of E-CR glass fiber, 10-20 parts of D-glass fiber, 10-20 parts of S-glass fiber and 10-20 parts of AR-glass fiber.

4. The manufacturing method of the low-resistance and high-trapping-efficiency glass filter material according to claim 1, characterized in that: The temperature in Step 2 is based on the melting of the glass fiber. The melting of the glass fiber refers to the process in which the batch material undergoes silicate reaction, melting and then transforms into a homogeneous glass liquid at high temperature. The specific melting temperature depends on the raw materials used and the production process, and the melting temperature of the glass is between 1000°C and 2000°C.

5. The manufacturing method of the low-resistance and high-trapping-efficiency glass filter material according to claim 1, characterized in that: The pressure in Step 2 is based on the common preparation process for high melting point glass fiber products, which is to use the flame method for wire drawing production. In this process, the pressure of the oxygen introduced into the oxygen pipe is 0.06-0.1 MPa, and the pressure of the gas introduced into the gas pipe is 0.06-0.1 MPa.

6. The manufacturing method of the low-resistance and high-trapping-efficiency glass filter material according to claim 1, wherein: The adhesive in Step 1 includes the following raw material components in parts by mass: 5-20 parts of silicone sealant, 10-20 parts of polyurethane sealant, 10-20 parts of acrylic sealant, 5-30 parts of modified polymer sealant, 15-30 parts of silicone sealant, 10-20 parts of epoxy resin adhesive and 10-20 parts of modified silane sealant.

7. The manufacturing method of the low-resistance and high-trapping-efficiency glass filter material according to claim 1, characterized in that: The performance indicators in Step 2 are specifically air permeability, tensile strength, elongation at break, water resistance, high temperature resistance, steam resistance and flame retardancy.

8. The manufacturing method of the low-resistance and high-trapping-efficiency glass filter material according to claim 1, characterized in that: In step 4, the finished product inspection conducts comprehensive performance tests on the prepared low-resistance and high-trapping-efficiency glass filter material to ensure that its quality meets the standards. During the inspection process, in strict accordance with industry standards or enterprise internal standards, key performance indicators such as air permeability, tensile strength, elongation at break, water resistance, high-temperature resistance, steam resistance, and flame retardancy are tested one by one to ensure the stability and reliability of the product. If any unqualified items are found during the inspection, the production process will be immediately traced back to find the root cause of the problem, and timely adjustments and optimizations will be made to ensure that the products produced subsequently can meet the high-quality requirements.

9. The manufacturing method of the low-resistance and high-trapping-efficiency glass filter material according to claim 1, characterized in that: In step 5, environmentally friendly and degradable materials are selected as packaging materials to reduce the impact on the environment. At the same time, strict moisture-proof and dust-proof treatments are carried out during the packaging process to ensure that the quality of the product is not damaged during storage and transportation. In addition, the production date, batch number, and specification model information of the product will be clearly marked on the packaging for easy traceability and management.

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