Preparation method of modified packing ion enhanced polytetrafluoroethylene composite

A technology of polytetrafluoroethylene and composite materials, applied in the field of new materials, can solve problems such as poor antistatic performance, large linear expansion coefficient, and low mechanical properties, and achieve improved thermal conductivity, improved thermal properties, improved heat resistance and Effect of creep resistance

Inactive Publication Date: 2015-05-06
佛山市南海区明扬电线厂
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The invention provides a method for preparing a modified filler ion-reinforced polytetrafluoroethylene composite material to solve the problem of low mechanical properties, poor wear resistance, poor thermal conductivity, large linear expansion coefficient and antistatic properties of existing polytetrafluoroethylene materials. poor performance defect

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019]A method for preparing a modified filler ion-reinforced polytetrafluoroethylene composite material. The matrix of the composite material is polytetrafluoroethylene, and the filling ions include tetrapod zinc oxide whiskers, aramid fibers, glass fibers, and nano-titanium dioxide. The mass of needle-shaped zinc oxide whiskers, aramid fibers, glass fibers and nano-titanium dioxide accounts for 10%, 5%, 3% and 2% of the mass of PTFE powder respectively, and PTFE is 120-mesh polytetrafluoroethylene Powder, tetraacicular zinc oxide whisker length 12 μm, root diameter 3 μm, aramid fiber length 2 mm, single filament diameter 8 μm, glass fiber 120 mesh glass fiber powder, nano-titanium dioxide particle size 15nm; tetraacicular zinc oxide crystal It needs to be modified according to the following method: Weigh 0.5g of silane coupling agent and dissolve it in 60ml of acetone, then add dropwise oxalic acid to adjust the pH to 5, and let it stand for 20 minutes; then weigh 12g of tetr...

Embodiment 2

[0023] A method for preparing a modified filler ion-reinforced polytetrafluoroethylene composite material. The matrix of the composite material is polytetrafluoroethylene, and the filling ions include tetrapod zinc oxide whiskers, aramid fibers, glass fibers, and nano-titanium dioxide. The mass of needle-shaped zinc oxide whiskers, aramid fibers, glass fibers and nano-titanium dioxide accounts for 12%, 7%, 4% and 3% of the mass of PTFE powder respectively, and PTFE is 150 mesh polytetrafluoroethylene Powder, tetraacicular zinc oxide whisker length 14 μm, root diameter 5 μm, aramid fiber length 2.5 mm, single filament diameter 10 μm, glass fiber 140 mesh glass fiber powder, nano-titanium dioxide particle size 30nm; tetraacicular zinc oxide Whiskers need to be modified according to the following method: Weigh 0.8 g of silane coupling agent and dissolve it in 70 ml of acetone, then add dropwise oxalic acid to adjust the pH to 6, and let it stand for 25 minutes; then weigh 14 g of ...

Embodiment 3

[0027] A method for preparing a modified filler ion-reinforced polytetrafluoroethylene composite material. The matrix of the composite material is polytetrafluoroethylene, and the filling ions include four-needle zinc oxide whiskers, aramid fiberglass fibers, and nano-titanium dioxide, wherein the four-needle The mass of zinc oxide whiskers, aramid fiber, glass fiber and nano-titanium dioxide accounts for 10%, 7%, 4% and 2% of the mass of PTFE powder respectively, and PTFE is 150-mesh PTFE powder , the length of the four-needle zinc oxide whisker is 12 μm, the root diameter is 5 μm, the length of the aramid fiber is 2 mm, the diameter of the monofilament is 10 μm, the glass fiber is 140 mesh glass fiber powder, and the particle size of nano-titanium dioxide is 30 nm; Zinc whiskers need to be modified according to the following method: Weigh 0.8 g of silane coupling agent and dissolve it in 70ml of acetone, then add dropwise oxalic acid to adjust the pH to 6, and let it stand fo...

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Abstract

The invention relates to a preparation method of a modified packing ion enhanced polytetrafluoroethylene composite. A matrix of the composite is polytetrafluoroethylene; filling ions comprise tetrapod-like zinc oxide whiskers, aramid fibers, glass fibers and nano titanium dioxide; the masses of the tetrapod-like zinc oxide whiskers, the aramid fibers, the glass fibers and nano titanium dioxide account for 10-12%, 5-7%, 3-4% and 2-3% of the mass of polytetrafluoroethylene powder; the polytetrafluoroethylene powder is in 120-150 meshes; the tetrapod-like zinc oxide whiskers are 12-14 micrometers in length; the diameters of roots of the tetrapod-like zinc oxide whiskers are 3-5 micrometers; the aramid fibers are 2-2.5mm in length; each monofilament is 8-10 micrometers in diameter; the glass fibers are glass fiber powder in 120-140 meshes; and the particle size of nano titanium dioxide is 15-30nm. The modified enhanced polytetrafluoroethylene composite has the advantages of high mechanical strength, good abrasive resistance, good thermal conductivity, lower linear expansion coefficient and excellent antistatic property, the mechanical properties and thermostability of the polytetrafluoroethylene composite are improved greatly, and the application field of the composite is further extended.

Description

technical field [0001] The invention relates to the field of new materials, in particular to a preparation method of a modified filler ion-enhanced polytetrafluoroethylene composite material. Background technique [0002] In the polymer structure, fluoroplastics are polymers containing fluorine atoms (F) or fluorine atom groups. Profiles, unit products or parts are made of plastic-like molding methods, which are commonly referred to as fluoroplastics or fluoroplastic products. Generally, fluoroplastic polymers are synthesized from monomers through copolymerization or homopolymerization. These monomers include: fluorine-containing monomers such as tetrafluoroethylene, fluoroethylene, hexafluoropropylene, and vinylidene fluoride. They may exist in the form of solutions, pellets, powders and the like. Profiles or unit products are made through various molding processes, and the profiles are obtained through secondary processing methods to obtain parts. These fluoroplastic pro...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L27/18C08L77/00C08K13/06C08K9/06C08K7/08C08K3/22C08K7/14
Inventor 李一帆
Owner 佛山市南海区明扬电线厂
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