Calcium carbonate and glass fiber filled modified polytetrafluoroethylene material and processing technology thereof

A polytetrafluoroethylene, processing technology, applied in the field of plastic modification, can solve the problems of high cost, poor mechanical properties of polytetrafluoroethylene, large linear expansion coefficient, etc., to achieve increased mechanical strength, stable mechanical properties, small Effect of Linear Expansion Coefficient

Pending Publication Date: 2022-05-13
江苏亿豪塑业股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Therefore, polytetrafluoroethylene sheets are often used in the market as electrical insulation materials and linings in contact with corrosive media, supporting sliders, track seals and lubricating materials, and polytetrafluoroethylene sheets are also widely used in chemicals, medicines, dyes, etc. Anti-corrosion lining materials for industrial containers, storage tanks, reaction tower kettles, large pipelines, and anti-sticking materials for machinery, construction, traffic bridge sliders, guide rails, printing and dyeing, light industr

Method used

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  • Calcium carbonate and glass fiber filled modified polytetrafluoroethylene material and processing technology thereof
  • Calcium carbonate and glass fiber filled modified polytetrafluoroethylene material and processing technology thereof
  • Calcium carbonate and glass fiber filled modified polytetrafluoroethylene material and processing technology thereof

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Embodiment

[0026] This embodiment provides a technical solution: a processing technology of calcium carbonate and glass fiber filled modified polytetrafluoroethylene material, and its specific processing steps are as follows:

[0027] S1: Firstly, 30kg of polytetrafluoroethylene powder, 45kg of glass fiber, 35kg of calcium carbonate powder, 5kg of white oil, 5kg of silicone powder and 1kg of perfluorosilane with CAS No. 83048-65-1 Put the agent into the high-speed mixer of model HT-300, and then stir it. The stirring temperature of the high-speed mixer is set to 140°C, the stirring speed is set to 800r / min, and the stirring time is set to 60s. After the stirring is completed, Obtain the mixed material A of 121kg;

[0028] S2: Put the mixed material A into the molding mold on the engineering plastic hydraulic press, and make the mixed material A cover the molding mold, and further open the engineering plastic hydraulic press, so that the engineering plastic hydraulic press can exert press...

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Abstract

The invention discloses a calcium carbonate and glass fiber filled modified polytetrafluoroethylene material and a processing technology thereof, and relates to the technical field of plastic modification. The composite material comprises the following components in parts by weight: 30wt%-40wt% of polytetrafluoroethylene powder, 40wt%-50wt% of glass fibers, 30wt%-50wt% of calcium carbonate powder and 10wt%-20wt% of processing aids, wherein the processing aids comprise a dispersing agent, a lubricating agent and a coupling agent. According to the invention, the design of the high filler is matched with the reasonable processing aid, so that various materials in the polytetrafluoroethylene plate can be uniformly dispersed, and therefore, the manufactured polytetrafluoroethylene plate has relatively small anisotropy, and macroscopically, the polytetrafluoroethylene plate has a relatively small linear expansion coefficient; meanwhile, the mechanical strength performance of the polytetrafluoroethylene plate is greatly improved.

Description

technical field [0001] The invention relates to the technical field of plastic modification, in particular to a modified polytetrafluoroethylene material filled with calcium carbonate and glass fiber and a processing technology thereof. Background technique [0002] PTFE is high temperature resistant (long-term use temperature 200-260 degrees), low temperature resistance (soft at -100 degrees), corrosion resistance (capable of aqua regia and all organic solvents), weather resistance (the best in plastics) aging life), high lubrication (with the smallest friction coefficient among plastics), non-stickiness (with the smallest surface tension among solid materials without sticking to any substance), non-toxic (physiologically inert) and excellent electrical properties, etc. A series of plastics with excellent performance, so it can be an ideal class C insulation material. [0003] Therefore, polytetrafluoroethylene sheets are often used in the market as electrical insulation m...

Claims

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Application Information

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IPC IPC(8): C08L27/18C08L91/00C08L83/04C08K7/14C08K3/26C08K9/00B29C71/02
CPCC08L27/18B29C71/02C08K2003/265C08L91/00C08L83/04C08K7/14C08K3/26C08K9/00
Inventor 姚袁生李延波韦军杜建周胡月阳柏立楼朱健李林
Owner 江苏亿豪塑业股份有限公司
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