Preparation method of antistatic teflon film

A technology of Teflon and anti-static, which is applied in the field of preparation of anti-static Teflon film, can solve the problems that it is difficult to make Teflon film, the color difference of Teflon film products, and affect the normal use, so as to achieve uniform quality, Good stability, low friction and wear effect

Inactive Publication Date: 2019-11-29
FOSHAN HUIFU POLYMER MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, there are few researches on the field of Teflon film anti-static in China. The thicker PTFE anti-static plates and rods are common on the market. These are difficult to make Teflon film. In addition, in the process of Teflon film preparation How to ensure the uniformity of raw materials mixing is also a big problem. Once the raw materials are not mixed uniformly, Teflon film products will have color difference, white spots, white spots, and even powder drop, which seriously affects normal use.

Method used

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  • Preparation method of antistatic teflon film

Examples

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Embodiment 1

[0027] A preparation method for an antistatic Teflon film, comprising the steps of:

[0028] Step 1: raw material selection, made of 95% polytetrafluoroethylene as base material and 5% carbon black as antistatic agent;

[0029] Wherein, the polytetrafluoroethylene has an average particle size of 25 μm, a bulk density of 400 g / L, a molecular weight of 10 million, and a moisture content of ≤0.04%;

[0030] The carbon black has a surface area of ​​800 Å, an average particle size of 40 nm, a bulk density of 130 g / L, and a moisture content of ≤0.05%.

[0031] Step 2: Mixing materials. Put the raw materials selected in step 1 into the mixer for preliminary mixing. The speed of the mixer is 80-400 rpm. Agglomerate, and then sent to the mixer through negative pressure for continuous mixing, repeat the cycle for 2 to 4 times, so that the two raw materials are fully mixed evenly, and the Teflon mixture powder is obtained;

[0032] Step 3: Press molding to obtain a Teflon green body. I...

Embodiment 2

[0037] The step of the preparation method of the antistatic Teflon film of the present embodiment is with embodiment 1, and the difference with embodiment 1 is:

[0038] In step 1, the component content of the polytetrafluoroethylene is 94%, the average particle size is 22.5 μm, the bulk density is 300 g / L, the molecular weight is 8 million, and the moisture content is ≤0.04%;

[0039] The component content of the carbon black is 6%, the surface area is 750, the average particle size is 30nm, the bulk density is 120g / L, and the moisture content is ≤0.05%.

Embodiment 3

[0041] The step of the preparation method of the antistatic Teflon film of the present embodiment is with embodiment 1, and the difference with embodiment 1 is:

[0042] In step 1, the component content of the polytetrafluoroethylene is 95%, the average particle size is 25 μm, the bulk density is 350 g / L, the molecular weight is 15 million, and the moisture content is ≤0.04%;

[0043] Furnace carbon black is selected, its component content is 5%, the surface area is 850, the average particle size is 35nm, the bulk density is 125g / L, and the moisture content is ≤0.05%.

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Abstract

The invention relates to the technical field of polymer materials, and in particular relates to a preparation method of an antistatic teflon film, which is prepared by the steps of raw material selection, mixing, compression molding, high-temperature sintering, turning into a film and shaping., polytetrafluoroethylene is taken as a base material, carbon black is added as an antistatic agent, raw materials with appropriate particle size, bulk density and water content are selected, the component ratio is optimized, and meanwhile, the preparation conditions of each step are strictly controlled.The prepared Teflon film product has uniform quality and good stability, has good performances of high and low temperature resistance, high strength and hardness resistance, tensile resistance and lowfriction abrasion resistance, solves the problem that the Teflon film is difficult to have both ultra-thin thickness and antistatic performance, meets the use requirements of OLED screens, and meetsthe needs of the market.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a preparation method of an antistatic Teflon film. Background technique [0002] Teflon, also known as polytetrafluoroethylene, referred to as PTFE, polytetrafluoroethylene is a polymer compound formed by the suspension polymerization of tetrafluoroethylene monomer, it has excellent chemical stability, corrosion resistance, sealing , high lubricity and non-stickiness, good anti-aging ability, high and low temperature resistance and other excellent characteristics, and it is not toxic to the human body. [0003] At present, Teflon is widely used in the liquid crystal industry. It is collectively referred to as buffer material in the industry, and is usually called electronic film or Teflon film. The requirements for Teflon film are extremely high in the process of LCD module binding, especially for the film. Thickness and thickness tolerance, high temperature deformatio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L27/18C08K3/04C08J5/18
CPCC08J5/18C08J2327/18C08K3/04
Inventor 黄贵军
Owner FOSHAN HUIFU POLYMER MATERIALS CO LTD
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