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A kind of white graphene composite PTFE material and preparation method thereof

A technology of white graphene and PTFE, applied in the field of white graphene composite PTFE material and its preparation, can solve the problems of complex processing equipment and formula, low strength of modified PTFE plastic, poor thermal conductivity, etc., and achieve broad application range and market prospect , easy to process, high mechanical strength

Active Publication Date: 2021-01-26
广东烯王科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome defects such as low strength of modified PTFE plastics on the market, non-abrasion resistance, poor thermal conductivity, difficult processing and molding, and complicated processing equipment and formulas to provide a white graphene composite PTFE material and its preparation method

Method used

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  • A kind of white graphene composite PTFE material and preparation method thereof
  • A kind of white graphene composite PTFE material and preparation method thereof
  • A kind of white graphene composite PTFE material and preparation method thereof

Examples

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Embodiment 1

[0030] An embodiment of the white graphene composite PTFE material of the present invention, the formula of the white graphene composite PTFE material described in this embodiment is shown in Table 1.

[0031] In this example, the preparation method of the modified white graphene is as follows: 1 part by weight of white graphene with 2 to 20 layers is first refluxed with nitric acid at 150°C for 3 hours to generate active groups such as hydroxyl groups and carboxyl groups on the surface. group; then placed in aqueous ethanol, add 6 weight parts of γ-mercaptopropyltrimethoxysilane (KH590), mechanically stir at room temperature for 6h, then wash the unreacted KH590 on the white graphene surface several times with acetone; finally the surface The white graphene that has been chemically modified KH590 is placed in DMF solvent with 30 parts by weight of vinyl acetate dissolved in advance, 1.5 parts by weight of photoinitiator 500 is added, and ultraviolet light is irradiated for 6 h...

Embodiment 2

[0036] An embodiment of the white graphene composite PTFE material of the present invention, the formula of the white graphene composite PTFE material described in this embodiment is shown in Table 1.

[0037]In this example, the preparation method of the modified white graphene is as follows: 1 part by weight of white graphene with 2 to 20 layers is first refluxed with sulfuric acid at 120°C for 5 hours to generate active groups such as hydroxyl groups and carboxyl groups on the surface. group; then be placed in ethanol aqueous solution, add the gamma-mercaptopropyl trimethoxysilane (KH590) of 10 weight parts, normal temperature mechanical stirring 6h, then repeatedly wash the unreacted KH590 on the white graphene surface with toluene; Finally the surface The white graphene that has been chemically modified KH590 is placed in DMF solvent with 40 parts by weight of acrylonitrile dissolved in advance, 5 parts by weight of photoinitiator 1173 is added, and ultraviolet light is ir...

Embodiment 3

[0042] An embodiment of the white graphene composite PTFE material of the present invention, the formula of the white graphene composite PTFE material described in this embodiment is shown in Table 1.

[0043] In this example, the preparation method of the modified white graphene is as follows: 1 part by weight of white graphene with 2 to 20 layers is first refluxed with a mixed acid of nitric acid and sulfuric acid at 100° C. for 6 hours to generate hydroxyl groups on the surface. , carboxyl and other active groups; then placed in ethanol aqueous solution, add 1 weight part of γ-mercaptopropyltrimethoxysilane (KH590), mechanically stir at room temperature for 8h, then wash the unreacted white graphene surface with acetone several times KH590; finally, place the white graphene whose surface has been chemically modified KH590 in DMF solvent with 20 parts by weight of vinyl acetate dissolved in advance, add 3 parts by weight of photoinitiator 184, irradiate with ultraviolet light...

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Abstract

The invention discloses a white graphene composite PTFE material, which comprises the following components in parts by weight: 0.1-20 parts of modified white graphene, 60-99.7 parts of PTFE resin, 0.1-10 parts of white oil and 0.1-20 parts of compatibilizer 20 servings. The invention also discloses a preparation method of the white graphene composite PTFE material. The modified white graphene is added to the white graphene composite PTFE material of the present invention, which can realize good physical and chemical bonding between the white graphene and the PTFE matrix. The prepared white graphene composite PTFE material not only has high strength, but also has the advantages of excellent thermal conductivity and wear resistance, and is also easy to process and shape, with broad application range and market prospects.

Description

technical field [0001] The invention relates to a PTFE material, in particular to a white graphene composite PTFE material and a preparation method thereof. Background technique [0002] Polytetrafluoroethylene (PTFE), commonly known as "Plastic King", is a polymer compound made of tetrafluoroethylene, which has excellent chemical stability, corrosion resistance, sealing, high lubricity, electrical insulation and Good anti-aging endurance. Used as engineering plastics, it can be made into PTFE tubes, rods, strips, plates, films, etc. It is generally used in corrosion-resistant pipes, containers, pumps, valves, radar, high-frequency communication equipment, radio equipment, etc. with high performance requirements. Although PTFE has excellent comprehensive properties, there are still industry problems such as low mechanical strength, poor wear resistance, low thermal conductivity, and difficult processing and molding, which seriously limit the further extensive and specific ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L27/18C08L91/06C08L51/06C08K9/02C08K9/06C08K9/04C08K7/00C08K3/38C09K5/14
Inventor 李晓丰毛志浩
Owner 广东烯王科技有限公司