Dust-free drag chain cable

Abstract

The invention relates to the field of drag chain cables, in particular to a dust-free drag chain cable which is used for solving the problems that an existing drag chain cable sheath material is poor in wear resistance, a large number of dust particles can be generated in the using process, and then serious adverse effects are caused. According to the dust-free drag chain cable, the wear resistance of the dust-free wear-resistant sheath layer can be remarkably improved by adding the wear-resistant reinforcing material into the dust-free wear-resistant sheath layer, so that the dust-free wear-resistant sheath layer is not easy to wear during reciprocating motion in a drag chain, and the service life of the dust-free drag chain cable is prolonged; according to the dust-free drag chain cable, the dust-free wear-resistant sheath layer is arranged, particle falling of the dust-free wear-resistant sheath layer in the wear process is remarkably reduced, dust is effectively reduced, the dust-free drag chain cable can meet the requirements of industries such as semiconductors, precision electronic equipment and medical instruments for occasions with high-cleanliness environments, and the dust-free drag chain cable is simple in process operation and low in cost. The industrial production is easy to realize.

Description

Technical Field

[0001] The invention relates to the field of drag chain cables, in particular to a dust-free drag chain cable. Background Art

[0002] Drag chain cable is a highly flexible special cable that can move back and forth with the drag chain without being easily worn. It is widely used in the drag chain system of various mechanical equipment to connect moving parts and fixed parts to achieve power and signal transmission. As an important component of the cable, the performance of the drag chain cable sheath directly affects the overall service life of the cable and its adaptability to the working environment.

[0003] Although the traditional drag chain cable sheath material meets the basic mechanical properties, chemical stability and electrical insulation performance requirements to a certain extent, its wear resistance still needs to be improved in occasions with high dust-free environment requirements, such as the production environment of semiconductor, precision electronic equipment, and medical device manufacturing. As a result, the drag chain cable will generate a large amount of dust particles due to friction and collision. These dust particles will pollute the production environment and even cause product quality degradation, reduced production efficiency, and production equipment failure. Therefore, it is of great practical significance to develop a dust-free drag chain cable with excellent wear resistance and dustproof performance.

[0004] In view of the above technical defects, a solution is now proposed. Summary of the invention

[0005] In order to overcome the above-mentioned technical problems, the purpose of the present invention is to provide a dust-free drag chain cable, which solves the problem that the existing drag chain cable sheath material has poor wear resistance and generates a large amount of dust particles during use, thereby causing serious adverse effects.

[0006] The purpose of the present invention can be achieved through the following technical solutions:

[0007] A dust-free drag chain cable, comprising a core wire, wherein the core wire is composed of a conductor and an insulating layer coated on the outside of the conductor, a filler is filled between a plurality of strands of the core wire, a tape layer is coated on the outside of a plurality of strands of the core wire, and a dust-free wear-resistant sheath layer is coated on the outside of the tape layer;

[0008] Wherein, the dust-free and wear-resistant jacket layer is prepared by the following steps:

[0009] Step 1: Add PVC resin, wear-resistant reinforcing material, diethyl phthalate, carbon black, aluminum hydroxide, magnesium stearate, antioxidant and ultraviolet absorber into a high-speed mixer, stir and mix for 30-50 minutes at a temperature of 70-80° C. and a stirring rate of 600-800 r / min to obtain a mixed material;

[0010] Step 2: Add the mixed material into the extruder, melt-extrude and coat it on the outside of the tape layer to form a dust-free and wear-resistant sheath layer to obtain a dust-free drag chain cable.

[0011] As a preferred embodiment of the present invention, the dust-free wear-resistant jacket layer comprises the following components in parts by weight:

[0012] 80-90 parts of PVC resin, 20-36 parts of wear-resistant reinforcing material, 9-13 parts of diethyl phthalate, 5-7 parts of carbon black, 2-6 parts of aluminum hydroxide, 1-3 parts of magnesium stearate, 0.5-1.5 parts of antioxidant and 0.5-1.5 parts of ultraviolet absorber.

[0013] As a preferred embodiment of the present invention, the PVC resin is DG-1000S; the antioxidant is antioxidant 1010; and the ultraviolet absorber is ultraviolet absorber UV-234.

[0014] As a preferred embodiment of the present invention, the wear-resistant reinforcing material is prepared by the following steps:

[0015] Step s1: Add N-(hydroxymethyl)acrylamide, triethyl borate, phenothiazine and benzene into a three-necked flask equipped with a stirrer, a thermometer, an air duct and a reflux condenser, introduce nitrogen protection, stir and react for 40-60 minutes at a temperature of 25-30° C. and a stirring rate of 300-400 r / min, then heat to reflux and continue stirring and reacting for 2-3 hours. After the reaction is completed, cool the reaction product to room temperature, then rotary evaporate to remove the solvent, then add it to anhydrous acetone, then vacuum filter, and rotary evaporate the filtrate to remove the solvent to obtain a polyene monomer;

[0016] Step s2: adding a polyene monomer, parachlorotrifluorotoluene, anhydrous sodium carbonate and benzene into a three-necked flask equipped with a stirrer, a thermometer and an air duct, introducing nitrogen protection, stirring the reaction at a temperature of 25-30° C. and a stirring rate of 300-400 r / min for 40-60 min, then heating to 90-95° C. and continuing to stir the reaction for 6-8 h. After the reaction is completed, the reaction product is cooled to room temperature, then vacuum filtered, and the filtrate is rotary evaporated to remove the solvent to obtain a polyene fluorine-containing monomer;

[0017] Step s3: Add silicon carbide powder, deionized water and anhydrous ethanol to a three-necked flask equipped with a stirrer, a thermometer, an air duct and a reflux condenser, perform ultrasonic treatment for 20-30 minutes at an ultrasonic frequency of 30-40kHz, adjust the pH to 9-10 with ammonia water, continue ultrasonic treatment for 10-15 minutes, add silane coupling agent KH-570 and stir the reaction for 20-30 minutes at a temperature of 25-30°C and a stirring rate of 300-400r / min, then heat the mixture to reflux and continue stirring the reaction for 2-3 hours. After the reaction is completed, cool the reaction product to room temperature, centrifuge it, wash the precipitate with distilled water for 3-5 times, place it in a vacuum drying oven, and dry it at a temperature of 70-75°C for 2-3 hours to obtain olefin-modified silicon carbide;

[0018] Step s4: Add N-phenylmaleimide, polyolefinic fluorine-containing monomer, olefin-modified silicon carbide and cyclohexanone into a three-necked flask equipped with an agitator, a thermometer and an air duct, introduce nitrogen protection, stir and react for 20-30 minutes at a temperature of 25-30°C and a stirring rate of 300-400r / min, then heat to 40-45°C and continue to stir and react for 10-20 minutes, then add azobisisobutyronitrile and heat to 90-100°C and continue to stir and react for 6-8 hours, after the reaction is completed, cool the reaction product to room temperature, pour it into petroleum ether, and then vacuum filter it, then place the filter cake in a vacuum drying oven, and dry it at a temperature of 50-55°C for 3-5 hours to obtain a wear-resistant reinforcing material.

[0019] As a preferred embodiment of the present invention, the dosage ratio of N-(hydroxymethyl)acrylamide, triethyl borate, phenothiazine and benzene in step s1 is 30 mmol: 10 mmol: 0.02-0.04 g: 50-60 mL.

[0020] As a preferred embodiment of the present invention, the usage ratio of the polyolefin monomer, parachlorobenzotrifluoride, anhydrous sodium carbonate and benzene in step s2 is 10 mmol: 30 mmol: 35-40 mmol: 60-70 mL.

[0021] As a preferred embodiment of the present invention, the usage ratio of the silicon carbide powder, deionized water, anhydrous ethanol and silane coupling agent KH-570 in step s3 is 5g:25-30mL:35-40mL:0.9-3.5g.

[0022] As a preferred embodiment of the present invention, the average particle size of the silicon carbide powder in step s3 is 23 μm; and the mass fraction of the ammonia water is 20-25%.

[0023] As a preferred embodiment of the present invention, the dosage ratio of the N-phenylmaleimide, the polyolefinic fluorine-containing monomer, the olefinic modified silicon carbide and the cyclohexanone in step s4 is 15 mmol: 3-13 mmol: 0.8-2.2 g: 50-60 mL.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] A dust-free drag chain cable, comprising: adding PVC resin, wear-resistant reinforcing material, diethyl phthalate, carbon black, aluminum hydroxide, magnesium stearate, antioxidant and ultraviolet absorber into a high-speed mixer, stirring and mixing to obtain a mixture, adding the mixture into an extruder, and performing melt extrusion and coating on the outside of a tape layer to form a dust-free wear-resistant sheath layer to obtain a dust-free drag chain cable; the dust-free drag chain cable can significantly improve the wear resistance of the dust-free wear-resistant sheath layer by adding the wear-resistant reinforcing material into the dust-free wear-resistant sheath layer, so that the dust-free wear-resistant sheath layer is not easily worn during the reciprocating motion in the drag chain, thereby extending the service life of the dust-free drag chain cable, and significantly reducing the particle shedding of the dust-free wear-resistant sheath layer during the wear process, thereby effectively reducing the generation of dust, so that the dust-free drag chain cable can meet the requirements of semiconductor, precision electronic equipment, medical equipment and other industries for high cleanliness environments, and the dust-free drag chain cable has simple process operation and is easy to realize industrial production.

[0026] In the process of preparing dust-free drag chain cables, a wear-resistant reinforcing material is first prepared. First, N-(hydroxymethyl) acrylamide and triethyl borate are reacted. The hydroxyl group on N-(hydroxymethyl) acrylamide undergoes an ester exchange reaction with the borate group on triethyl borate to form a new borate group, and an olefin group is introduced to obtain a polyolefin monomer. Then, the polyolefin monomer and para-chlorotrifluorotoluene react, and the secondary amine group on the polyolefin monomer reacts with the bromine atom on para-chlorotrifluorotoluene to introduce a benzene ring and a fluorine element to obtain a polyolefin fluorine-containing monomer. Then, the silicon carbide powder is modified using the silane coupling agent KH-570, which significantly improves the dispersibility of the silicon carbide powder and introduces a large number of olefin groups to obtain olefin-modified silicon carbide. Finally, N-phenylmaleimide, polyolefin fluorine-containing monomer, Olefin-modified silicon carbide is polymerized as a polymerization monomer to form a wear-resistant reinforcing material; the molecular structure of the wear-resistant reinforcing material contains a benzene ring and a five-membered ring, and these stable ring structures give it excellent mechanical properties and stability. Its molecular structure also contains a large amount of fluorine elements, which achieve its low surface energy and self-lubrication, greatly reducing its friction coefficient, and silicon carbide has high hardness and good wear resistance. After it is evenly dispersed, it can form an effective wear-resistant reinforcement network, and under the action of boron elements, benzene rings and fluorine elements, its thermal stability is improved, so that its flame retardant properties are improved. Therefore, after adding the wear-resistant reinforcing material to the dust-free wear-resistant sheath layer, its wear resistance can be significantly improved, ensuring the safe operation of the cable, and greatly reducing the dust generation during the movement of the drag chain, expanding its scope of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to facilitate understanding by those skilled in the art, the present invention is further described below with reference to the accompanying drawings.

[0028] Figure 1 It is a schematic structural diagram of the dust-free drag chain cable of the present invention. DETAILED DESCRIPTION

[0029] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] Embodiment 1:

[0031] See also Figure 1As shown, this embodiment is a dust-free drag chain cable, including a core wire, wherein the core wire is composed of a conductor made of copper or tinned copper and an insulating layer of FEP material coated on the outside of the conductor, several strands of the core wires are filled with bulletproof wire as a filler, and the outside of several strands of the core wires are wrapped with PTFE tape to form a wrapping layer, and the outside of the wrapping layer is coated with a dust-free and wear-resistant sheath layer.

[0032] Embodiment 2:

[0033] This embodiment is a production process of a dust-free drag chain cable, comprising the following steps:

[0034] Step S1: 30 mmol N-(hydroxymethyl)acrylamide, 10 mmol triethyl borate, 0.02 g phenothiazine and 50 mL benzene are added to a three-necked flask equipped with a stirrer, a thermometer, an air duct and a reflux condenser, and nitrogen is introduced for protection. The mixture is stirred for reaction at a temperature of 25° C. and a stirring rate of 300 r / min for 40 min, and then the mixture is heated to reflux and stirred for reaction for 2 h. After the reaction is completed, the reaction product is cooled to room temperature, and then the solvent is removed by rotary evaporation, and then the mixture is added to anhydrous acetone, and then vacuum filtered, and the filtrate is rotary evaporated to remove the solvent to obtain a polyene monomer;

[0035] Step S2: 10 mmol of a polyene monomer, 30 mmol of parachlorotrifluorotoluene, 35 mmol of anhydrous sodium carbonate and 60 mL of benzene are added to a three-necked flask equipped with a stirrer, a thermometer and a gas guide tube, and nitrogen is introduced for protection. The mixture is stirred for reaction at a temperature of 25° C. and a stirring rate of 300 r / min for 40 min, and then the mixture is heated to 90° C. and stirred for reaction for 6 h. After the reaction is completed, the reaction product is cooled to room temperature, and then vacuum filtered, and the filtrate is rotary evaporated to remove the solvent to obtain a polyene fluorine-containing monomer;

[0036] Step S3: 5 g of silicon carbide powder with an average particle size of 23 μm, 25 mL of deionized water and 35 mL of anhydrous ethanol are added to a three-necked flask equipped with a stirrer, a thermometer, an air guide tube and a reflux condenser, and ultrasonically treated for 20 min at an ultrasonic frequency of 30 kHz, and then the pH is adjusted to 9 with 20% ammonia water by mass, and then the ultrasonic treatment is continued for 10 min, and then 0.9 g of silane coupling agent KH-570 is added and stirred for 20 min at a temperature of 25° C. and a stirring rate of 300 r / min, and then the temperature is raised to reflux and the stirring reaction is continued for 2 h. After the reaction is completed, the reaction product is cooled to room temperature and then centrifuged. The precipitate is washed with distilled water 3 times, and then placed in a vacuum drying oven and dried at a temperature of 70° C. for 2 h to obtain olefin-modified silicon carbide;

[0037] Step S4: 15mmol N-phenylmaleimide, 3mmol polyolefinic fluorine-containing monomer, 0.8g olefin-modified silicon carbide and 50mL cyclohexanone are added to a three-necked flask equipped with a stirrer, a thermometer and an air duct, and nitrogen is introduced for protection. The mixture is stirred for reaction at a temperature of 25°C and a stirring rate of 300r / min for 20min, and then the mixture is heated to 40°C and the stirring reaction is continued for 10min. Then, azobisisobutyronitrile is added and the mixture is heated to 90°C and the stirring reaction is continued for 6h. After the reaction is completed, the reaction product is cooled to room temperature, poured into petroleum ether, and then vacuum filtered. Then, the filter cake is placed in a vacuum drying oven and dried at a temperature of 50°C for 3h to obtain a wear-resistant reinforcing material.

[0038] Step S5: weigh 80 parts of PVC resin, 20 parts of wear-resistant reinforcing material, 9 parts of diethyl phthalate, 5 parts of carbon black, 2 parts of aluminum hydroxide, 1 part of magnesium stearate, 0.5 parts of antioxidant and 0.5 parts of ultraviolet absorber according to weight parts, and set aside; the PVC resin is DG-1000S; the antioxidant is antioxidant 1010; the ultraviolet absorber is ultraviolet absorber UV-234;

[0039] Step S6: adding PVC resin, wear-resistant reinforcing material, diethyl phthalate, carbon black, aluminum hydroxide, magnesium stearate, antioxidant and ultraviolet absorber into a high-speed mixer, stirring and mixing at a temperature of 70° C. and a stirring rate of 600 r / min for 30 minutes to obtain a mixed material;

[0040] Step S7: adding the mixed material into an extruder, and after being melt-extruded and coated on the outside of the tape layer, a dust-free and wear-resistant sheath layer is formed to obtain a dust-free drag chain cable.

[0041] Embodiment 3:

[0042] This embodiment is a production process of a dust-free drag chain cable, comprising the following steps:

[0043] Step S1: 30 mmol N-(hydroxymethyl)acrylamide, 10 mmol triethyl borate, 0.03 g phenothiazine and 55 mL benzene are added to a three-necked flask equipped with a stirrer, a thermometer, an air duct and a reflux condenser, and nitrogen is introduced for protection. The mixture is stirred for reaction at a temperature of 28° C. and a stirring rate of 350 r / min for 50 min, and then the mixture is heated to reflux and stirred for reaction for 2.5 h. After the reaction is completed, the reaction product is cooled to room temperature, and then the solvent is removed by rotary evaporation, and then the mixture is added to anhydrous acetone, and then vacuum filtered, and the filtrate is rotary evaporated to remove the solvent to obtain a polyene monomer;

[0044] Step S2: 10 mmol of a polyene monomer, 30 mmol of parachlorotrifluorotoluene, 38 mmol of anhydrous sodium carbonate and 65 mL of benzene are added to a three-necked flask equipped with a stirrer, a thermometer and a gas guide tube, and nitrogen is introduced for protection. The mixture is stirred for reaction at a temperature of 28° C. and a stirring rate of 350 r / min for 50 min, and then the mixture is heated to 92° C. and stirred for reaction for 7 h. After the reaction is completed, the reaction product is cooled to room temperature, and then vacuum filtered, and the filtrate is rotary evaporated to remove the solvent to obtain a polyene fluorine-containing monomer;

[0045] Step S3: 5 g of silicon carbide powder with an average particle size of 23 μm, 28 mL of deionized water and 38 mL of anhydrous ethanol are added to a three-necked flask equipped with a stirrer, a thermometer, an air guide tube and a reflux condenser, and ultrasonically treated for 25 min at an ultrasonic frequency of 35 kHz, and then the pH is adjusted to 9.5 with 22% ammonia water, and then the ultrasonic treatment is continued for 12 min, and then 2.2 g of silane coupling agent KH-570 is added and stirred for 25 min at a temperature of 28 ° C and a stirring rate of 350 r / min, and then the temperature is raised to reflux and the stirring reaction is continued for 2.5 h. After the reaction is completed, the reaction product is cooled to room temperature and then centrifuged. The precipitate is washed with distilled water 4 times, and then placed in a vacuum drying oven and dried at a temperature of 72 ° C for 2.5 h to obtain olefin-modified silicon carbide;

[0046] Step S4: 15 mmol N-phenylmaleimide, 8 mmol polyolefinic fluorine-containing monomer, 1.5 g olefinic modified silicon carbide and 55 mL cyclohexanone are added to a three-necked flask equipped with a stirrer, a thermometer and an air duct, and nitrogen is introduced for protection. The mixture is stirred for reaction at a temperature of 28° C. and a stirring rate of 350 r / min for 25 min, and then the mixture is heated to 42° C. and the stirring reaction is continued for 15 min. Then, azobisisobutyronitrile is added and the mixture is heated to 95° C. and the stirring reaction is continued for 7 h. After the reaction is completed, the reaction product is cooled to room temperature, poured into petroleum ether, and then vacuum filtered. Then, the filter cake is placed in a vacuum drying oven and dried at a temperature of 52° C. for 4 h to obtain a wear-resistant reinforcing material.

[0047] Step S5: weighing 85 parts of PVC resin, 28 parts of wear-resistant reinforcing material, 11 parts of diethyl phthalate, 6 parts of carbon black, 4 parts of aluminum hydroxide, 2 parts of magnesium stearate, 1 part of antioxidant and 1 part of ultraviolet absorber according to weight parts for standby use; the PVC resin is DG-1000S; the antioxidant is antioxidant 1010; the ultraviolet absorber is ultraviolet absorber UV-234;

[0048] Step S6: adding PVC resin, wear-resistant reinforcing material, diethyl phthalate, carbon black, aluminum hydroxide, magnesium stearate, antioxidant and ultraviolet absorber into a high-speed mixer, stirring and mixing at a temperature of 75° C. and a stirring rate of 700 r / min for 40 minutes to obtain a mixed material;

[0049] Step S7: adding the mixed material into an extruder, and after being melt-extruded and coated on the outside of the tape layer, a dust-free and wear-resistant sheath layer is formed to obtain a dust-free drag chain cable.

[0050] Embodiment 4:

[0051] This embodiment is a production process of a dust-free drag chain cable, comprising the following steps:

[0052] Step S1: 30 mmol N-(hydroxymethyl)acrylamide, 10 mmol triethyl borate, 0.04 g phenothiazine and 60 mL benzene are added to a three-necked flask equipped with a stirrer, a thermometer, an air duct and a reflux condenser, and nitrogen is introduced for protection. The mixture is stirred for reaction at a temperature of 30° C. and a stirring rate of 400 r / min for 60 min, and then the mixture is heated to reflux and the stirring reaction is continued for 3 h. After the reaction is completed, the reaction product is cooled to room temperature, and then the solvent is removed by rotary evaporation, and then the mixture is added to anhydrous acetone, and then vacuum filtered, and the filtrate is rotary evaporated to remove the solvent to obtain a polyene monomer;

[0053] Step S2: 10 mmol of a polyene monomer, 30 mmol of parachlorotrifluorotoluene, 40 mmol of anhydrous sodium carbonate and 70 mL of benzene are added to a three-necked flask equipped with a stirrer, a thermometer and a gas guide tube, and nitrogen is introduced for protection. The mixture is stirred for reaction at a temperature of 30° C. and a stirring rate of 400 r / min for 60 min, and then the mixture is heated to 95° C. and stirred for reaction for 8 h. After the reaction is completed, the reaction product is cooled to room temperature, and then vacuum filtered, and the filtrate is rotary evaporated to remove the solvent to obtain a polyene fluorine-containing monomer;

[0054] Step S3: 5 g of silicon carbide powder with an average particle size of 23 μm, 30 mL of deionized water and 40 mL of anhydrous ethanol are added to a three-necked flask equipped with a stirrer, a thermometer, an air guide tube and a reflux condenser, and ultrasonically treated for 30 min at an ultrasonic frequency of 40 kHz, and then the pH is adjusted to 10 with 25% ammonia water, and then the ultrasonic treatment is continued for 15 min, and then 3.5 g of silane coupling agent KH-570 is added and stirred for 30 min at a temperature of 30° C. and a stirring rate of 400 r / min, and then the temperature is raised to reflux and the stirring reaction is continued for 3 h. After the reaction is completed, the reaction product is cooled to room temperature and then centrifuged. The precipitate is washed with distilled water 5 times, and then placed in a vacuum drying oven and dried at a temperature of 75° C. for 3 h to obtain olefin-modified silicon carbide;

[0055] Step S4: 15mmol N-phenylmaleimide, 13mmol polyolefinic fluorine-containing monomer, 2.2g olefin-modified silicon carbide and 60mL cyclohexanone are added to a three-necked flask equipped with a stirrer, a thermometer and an air duct, and nitrogen is introduced for protection. The mixture is stirred for reaction at a temperature of 30°C and a stirring rate of 400r / min for 30min, and then the mixture is heated to 45°C and stirred for reaction for 20min. Azobisisobutyronitrile is then added and the mixture is heated to 100°C and stirred for reaction for 8h. After the reaction is completed, the reaction product is cooled to room temperature, poured into petroleum ether, and then vacuum filtered. The filter cake is then placed in a vacuum drying oven and dried at 55°C for 5h to obtain a wear-resistant reinforcing material.

[0056] Step S5: weigh 90 parts of PVC resin, 36 parts of wear-resistant reinforcing material, 13 parts of diethyl phthalate, 7 parts of carbon black, 6 parts of aluminum hydroxide, 3 parts of magnesium stearate, 1.5 parts of antioxidant and 1.5 parts of ultraviolet absorber according to weight parts, and set aside; the PVC resin is DG-1000S; the antioxidant is antioxidant 1010; the ultraviolet absorber is ultraviolet absorber UV-234;

[0057] Step S6: adding PVC resin, wear-resistant reinforcing material, diethyl phthalate, carbon black, aluminum hydroxide, magnesium stearate, antioxidant and ultraviolet absorber into a high-speed mixer, stirring and mixing at a temperature of 80° C. and a stirring rate of 800 r / min for 50 minutes to obtain a mixed material;

[0058] Step S7: adding the mixed material into an extruder, and after being melt-extruded and coated on the outside of the tape layer, a dust-free and wear-resistant sheath layer is formed to obtain a dust-free drag chain cable.

[0059] Comparative Example 1:

[0060] This comparative example is a production process of a dust-free drag chain cable, comprising the following steps:

[0061] Step S1: weigh 90 parts of PVC resin, 13 parts of diethyl phthalate, 7 parts of carbon black, 6 parts of aluminum hydroxide, 3 parts of magnesium stearate, 1.5 parts of antioxidant and 1.5 parts of ultraviolet absorber according to weight parts, and set aside; the PVC resin is DG-1000S; the antioxidant is antioxidant 1010; the ultraviolet absorber is ultraviolet absorber UV-234;

[0062] Step S2: adding PVC resin, diethyl phthalate, carbon black, aluminum hydroxide, magnesium stearate, antioxidant and ultraviolet absorber into a high-speed mixer, stirring and mixing at a temperature of 80° C. and a stirring rate of 800 r / min for 50 minutes to obtain a mixed material;

[0063] Step S3: adding the mixed material into an extruder, and after being melt-extruded and coated on the outside of the tape layer, a dust-free and wear-resistant sheath layer is formed to obtain a dust-free drag chain cable.

[0064] Comparative Example 2:

[0065] This comparative example is a production process of a dust-free drag chain cable, comprising the following steps:

[0066] Step S1: 15mmol N-phenylmaleimide and 60mL cyclohexanone are added to a three-necked flask equipped with a stirrer, a thermometer and an air duct, and nitrogen is introduced for protection. The mixture is stirred for reaction at a temperature of 30°C and a stirring rate of 400r / min for 30min, and then the mixture is heated to 45°C and stirred for reaction for 20min. Then azobisisobutyronitrile is added and the mixture is heated to 100°C and stirred for reaction for 8h. After the reaction is completed, the reaction product is cooled to room temperature, poured into petroleum ether, and then vacuum filtered. Then the filter cake is placed in a vacuum drying oven and dried at a temperature of 55°C for 5h to obtain a wear-resistant reinforcing material.

[0067] Step S2: weigh 90 parts of PVC resin, 36 parts of wear-resistant reinforcing material, 13 parts of diethyl phthalate, 7 parts of carbon black, 6 parts of aluminum hydroxide, 3 parts of magnesium stearate, 1.5 parts of antioxidant and 1.5 parts of ultraviolet absorber according to weight parts, and set aside; the PVC resin is DG-1000S; the antioxidant is antioxidant 1010; the ultraviolet absorber is ultraviolet absorber UV-234;

[0068] Step S3: adding PVC resin, wear-resistant reinforcing material, diethyl phthalate, carbon black, aluminum hydroxide, magnesium stearate, antioxidant and ultraviolet absorber into a high-speed mixer, stirring and mixing at a temperature of 80° C. and a stirring rate of 800 r / min for 50 minutes to obtain a mixed material;

[0069] Step S4: adding the mixed material into an extruder, and after being melt-extruded and coated on the outside of the tape layer, a dust-free and wear-resistant sheath layer is formed to obtain a dust-free drag chain cable.

[0070] Comparative Example 3:

[0071] This comparative example is a production process of a dust-free drag chain cable, comprising the following steps:

[0072] Step S1: 30 mmol N-(hydroxymethyl)acrylamide, 10 mmol triethyl borate, 0.04 g phenothiazine and 60 mL benzene are added to a three-necked flask equipped with a stirrer, a thermometer, an air duct and a reflux condenser, and nitrogen is introduced for protection. The mixture is stirred for reaction at a temperature of 30° C. and a stirring rate of 400 r / min for 60 min, and then the mixture is heated to reflux and the stirring reaction is continued for 3 h. After the reaction is completed, the reaction product is cooled to room temperature, and then the solvent is removed by rotary evaporation, and then the mixture is added to anhydrous acetone, and then vacuum filtered, and the filtrate is rotary evaporated to remove the solvent to obtain a polyene monomer;

[0073] Step S2: 10 mmol of a polyene monomer, 30 mmol of parachlorotrifluorotoluene, 40 mmol of anhydrous sodium carbonate and 70 mL of benzene are added to a three-necked flask equipped with a stirrer, a thermometer and a gas guide tube, and nitrogen is introduced for protection. The mixture is stirred for reaction at a temperature of 30° C. and a stirring rate of 400 r / min for 60 min, and then the mixture is heated to 95° C. and stirred for reaction for 8 h. After the reaction is completed, the reaction product is cooled to room temperature, and then vacuum filtered, and the filtrate is rotary evaporated to remove the solvent to obtain a polyene fluorine-containing monomer;

[0074] Step S3: 15mmol N-phenylmaleimide, 13mmol polyolefin fluorine-containing monomer and 60mL cyclohexanone are added to a three-necked flask equipped with a stirrer, a thermometer and an air duct, and nitrogen is introduced for protection. The mixture is stirred for reaction at a temperature of 30°C and a stirring rate of 400r / min for 30min, and then the mixture is heated to 45°C and stirred for reaction for 20min. Then azobisisobutyronitrile is added and the mixture is heated to 100°C and stirred for reaction for 8h. After the reaction is completed, the reaction product is cooled to room temperature, poured into petroleum ether, and then vacuum filtered. Then the filter cake is placed in a vacuum drying oven and dried at a temperature of 55°C for 5h to obtain a wear-resistant reinforcing material.

[0075] Step S4: weigh 90 parts of PVC resin, 36 parts of wear-resistant reinforcing material, 13 parts of diethyl phthalate, 7 parts of carbon black, 6 parts of aluminum hydroxide, 3 parts of magnesium stearate, 1.5 parts of antioxidant and 1.5 parts of ultraviolet absorber according to weight parts, and set aside; the PVC resin is DG-1000S; the antioxidant is antioxidant 1010; the ultraviolet absorber is ultraviolet absorber UV-234;

[0076] Step S5: adding PVC resin, wear-resistant reinforcing material, diethyl phthalate, carbon black, aluminum hydroxide, magnesium stearate, antioxidant and ultraviolet absorber into a high-speed mixer, stirring and mixing at a temperature of 80° C. and a stirring rate of 800 r / min for 50 minutes to obtain a mixed material;

[0077] Step S6: adding the mixed material into an extruder, and after being melted and extruded, coating the mixed material on the outside of the tape layer to form a dust-free and wear-resistant sheath layer, thereby obtaining a dust-free drag chain cable.

[0078] Comparative Example 4:

[0079] This comparative example is a production process of a dust-free drag chain cable, comprising the following steps:

[0080] Step S1: 5 g of silicon carbide powder with an average particle size of 23 μm, 30 mL of deionized water and 40 mL of anhydrous ethanol are added to a three-necked flask equipped with a stirrer, a thermometer, an air guide tube and a reflux condenser, and ultrasonically treated for 30 min at an ultrasonic frequency of 40 kHz, and then the pH is adjusted to 10 with 25% ammonia water, and then the ultrasonic treatment is continued for 15 min, and then 3.5 g of silane coupling agent KH-570 is added and stirred for 30 min at a temperature of 30° C. and a stirring rate of 400 r / min, and then the temperature is raised to reflux and the stirring reaction is continued for 3 h. After the reaction is completed, the reaction product is cooled to room temperature and then centrifuged, and the precipitate is washed with distilled water 5 times, and then placed in a vacuum drying oven and dried at a temperature of 75° C. for 3 h to obtain olefin-modified silicon carbide;

[0081] Step S2: 15mmol N-phenylmaleimide, 2.2g olefin-modified silicon carbide and 60mL cyclohexanone are added to a three-necked flask equipped with a stirrer, a thermometer and an air duct, and nitrogen is introduced for protection. The mixture is stirred for reaction at a temperature of 30°C and a stirring rate of 400r / min for 30min, and then the mixture is heated to 45°C and stirred for reaction for 20min. Then, azobisisobutyronitrile is added and the mixture is heated to 100°C and stirred for reaction for 8h. After the reaction is completed, the reaction product is cooled to room temperature, poured into petroleum ether, and then vacuum filtered. Then, the filter cake is placed in a vacuum drying oven and dried at a temperature of 55°C for 5h to obtain a wear-resistant reinforcing material.

[0082] Step S3: weigh 90 parts of PVC resin, 36 parts of wear-resistant reinforcing material, 13 parts of diethyl phthalate, 7 parts of carbon black, 6 parts of aluminum hydroxide, 3 parts of magnesium stearate, 1.5 parts of antioxidant and 1.5 parts of ultraviolet absorber according to weight parts, and set aside; the PVC resin is DG-1000S; the antioxidant is antioxidant 1010; the ultraviolet absorber is ultraviolet absorber UV-234;

[0083] Step S4: adding PVC resin, wear-resistant reinforcing material, diethyl phthalate, carbon black, aluminum hydroxide, magnesium stearate, antioxidant and ultraviolet absorber into a high-speed mixer, stirring and mixing at a temperature of 80° C. and a stirring rate of 800 r / min for 50 minutes to obtain a mixed material;

[0084] Step S5: adding the mixed material into an extruder, and after being melt-extruded and coated on the outside of the tape layer, a dust-free and wear-resistant sheath layer is formed to obtain a dust-free drag chain cable.

[0085] The dust-free drag chain cables of Examples 2-4 and Comparative Examples 1-4 were subjected to performance tests, and the test methods were as follows:

[0086] Test the tensile strength of the dust-free and wear-resistant sheath layer of the dust-free drag chain cable according to GB / T 2951.6-1994;

[0087] Test the wear volume of the dust-free wear-resistant sheath layer of the dust-free drag chain cable according to ISO 4649-2017;

[0088] Test the oxygen index of the dust-free and wear-resistant sheath layer of the dust-free drag chain cable according to GB / T 2406.2-2009;

[0089] The dust-free and wear-resistant sheath layer of the dust-free drag chain cable is installed on a simulated drag chain device, and subjected to 10,000 bending and movement tests to simulate the movement of the drag chain. A dust detector is used to test the dust content in the test environment according to ISO 14644-1 Class 1 test.

[0090] The test results are shown in the following table:

[0091] sample Tensile strength, MPa <![CDATA[Wear volume, mm 3 > Oxygen index, % <![CDATA[Dust content, mg / m 2 > Example 2 19.8 52 32.2 0.05 Example 3 21.1 48 33.9 0.04 Example 4 22.6 43 35.3 0.02 Comparative Example 1 10.3 96 26.1 1.12 Comparative Example 2 14.6 85 29.5 0.88 Comparative Example 3 17.9 68 31.8 0.09 Comparative Example 4 19.0 71 30.4 0.11

[0092] Referring to the data in the above table, it can be known that the dust-free drag chain cable of the present application has excellent mechanical properties, wear resistance, dustproof properties and flame retardant properties.

[0093] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0094] The above contents are merely examples and explanations of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the invention or exceed the scope defined in this application, they shall all fall within the protection scope of the present invention.

Claims

1. A dust-free drag chain cable, characterized in that: The invention comprises a core wire, wherein the core wire is composed of a conductor and an insulating layer coated on the outside of the conductor, a filler is filled between several strands of the core wire, a tape layer is coated on the outside of several strands of the core wire, and a dust-free and wear-resistant sheath layer is coated on the outside of the tape layer; Wherein, the dust-free and wear-resistant jacket layer is prepared by the following steps: Step 1: Add PVC resin, wear-resistant reinforcing material, diethyl phthalate, carbon black, aluminum hydroxide, magnesium stearate, antioxidant and ultraviolet absorber into a high-speed mixer, stir and mix for 30-50 minutes at a temperature of 70-80° C. and a stirring rate of 600-800 r / min to obtain a mixed material; Step 2: Add the mixed material into the extruder, melt-extrude and coat it on the outside of the tape layer to form a dust-free and wear-resistant sheath layer to obtain a dust-free drag chain cable.

2. A dust-free drag chain cable according to claim 1, characterized in that: The dust-free wear-resistant jacket layer comprises the following components in parts by weight: 80-90 parts of PVC resin, 20-36 parts of wear-resistant reinforcing material, 9-13 parts of diethyl phthalate, 5-7 parts of carbon black, 2-6 parts of aluminum hydroxide, 1-3 parts of magnesium stearate, 0.5-1.5 parts of antioxidant and 0.5-1.5 parts of ultraviolet absorber.

3. A dust-free drag chain cable according to claim 2, characterized in that: The PVC resin is DG-1000S; the antioxidant is antioxidant 1010; and the ultraviolet absorber is ultraviolet absorber UV-234.

4. The dust-free drag chain cable according to claim 1, characterized in that: The wear-resistant reinforcing material is prepared by the following steps: Step s1: stirring N-(hydroxymethyl)acrylamide, triethyl borate, phenothiazine and benzene for reaction, cooling the reaction product after the reaction is completed, then rotary evaporating, then adding it to anhydrous acetone, then vacuum filtering, and rotary evaporating the filtrate to obtain a polyene monomer; Step s2: stirring a polyene monomer, parachlorotrifluorotoluene, anhydrous sodium carbonate and benzene to react, cooling the reaction product after the reaction is completed, and then vacuum filtering and rotary evaporating the filtrate to obtain a polyene fluorine-containing monomer; Step s3: subjecting silicon carbide powder, deionized water and anhydrous ethanol to ultrasonic treatment, and then adjusting the pH with ammonia water, and then adding silane coupling agent KH-570 to stir and react, and after the reaction is completed, cooling the reaction product, and then centrifuging, and washing and drying the precipitate to obtain olefin-modified silicon carbide; Step s4: Stir N-phenylmaleimide, polyolefinic fluorine-containing monomer, olefin-modified silicon carbide and cyclohexanone for reaction, then add azobisisobutyronitrile and continue stirring the reaction. After the reaction is completed, cool the reaction product, pour it into petroleum ether, and then vacuum filter it. Then dry the filter cake to obtain a wear-resistant reinforcing material.

5. A dust-free drag chain cable according to claim 4, characterized in that: The usage ratio of the N-(hydroxymethyl)acrylamide, triethyl borate, phenothiazine and benzene in step s1 is 30mmol:10mmol:0.02-0.04g:50-60mL.

6. A dust-free drag chain cable according to claim 4, characterized in that: The usage ratio of the polyolefin monomer, parachlorotrifluorotoluene, anhydrous sodium carbonate and benzene in step s2 is 10 mmol: 30 mmol: 35-40 mmol: 60-70 mL.

7. A dust-free drag chain cable according to claim 4, characterized in that: The usage ratio of the silicon carbide powder, deionized water, anhydrous ethanol and silane coupling agent KH-570 in step s3 is 5g:25-30mL:35-40mL:0.9-3.5g.

8. The dust-free drag chain cable according to claim 4, characterized in that: The average particle size of the silicon carbide powder in step s3 is 23 μm; the mass fraction of the ammonia water is 20-25%.

9. The dust-free drag chain cable according to claim 4, characterized in that: The usage ratio of the N-phenylmaleimide, the polyolefinic fluorine-containing monomer, the olefin-modified silicon carbide and the cyclohexanone in step s4 is 15 mmol: 3-13 mmol: 0.8-2.2 g: 50-60 mL.

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