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Automobile brake pad graphene hybrid/PEEK plastic and reparation method

A polyetheretherketone, automobile brake technology, applied in the field of automobile brake pad graphene hybrid/polyetheretherketone plastic and preparation, can solve the problems of easy corrosion, high price and high cost of semi-metal brake pads, and achieve friction Excellent performance, low cost and stable performance

Inactive Publication Date: 2019-02-01
CHENDU NEW KELI CHEM SCI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] Aiming at the defects of easy rust, high heat generation, high cost and frictional noise in semi-metallic brake pads which are widely used at present, while glass fiber is relatively brittle and carbon fiber is superior in performance but expensive, the present invention proposes an automobile brake pad. Sheet graphene hybrid / polyether ether ketone plastic and preparation method, thereby effectively improving the friction performance of the material, and low cost, easy to popularize

Method used

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  • Automobile brake pad graphene hybrid/PEEK plastic and reparation method

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Experimental program
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Effect test

Embodiment 1

[0031] The preparation process is:

[0032] (1) Disperse graphene oxide in water, add nano-montmorillonite, polyamide-amine dendritic molecule (PAMAM), ultrasonically disperse, then add ascorbic acid as a reducing agent, stir evenly with magnetic force, and obtain dendritic PAMAM / graphene / montmorillonite mixed solution; wherein, 17 parts by weight of graphene oxide, 55 parts by weight of water, 3 parts by weight of nano-montmorillonite, 23 parts by weight of polyamide-amine dendrimer, 2 parts by weight of ascorbic acid; the time of ultrasonic dispersion is 2h, the time of magnetic stirring is 8h;

[0033] (2) Add calcium hydroxide suspension to the mixed solution prepared in step (1), drop into sulfuric acid solution, heat up to react, then add crystallization directing agent, filter and dry to obtain calcium sulfate whiskers and A hybrid of dendritic PAMAM / graphene / montmorillonite; wherein, 57 parts by weight of mixed solution, 23 parts by weight of calcium hydroxide suspen...

Embodiment 2

[0041] The preparation process is:

[0042] (1) Disperse graphene oxide in water, add nano-montmorillonite, polyamide-amine dendritic molecule (PAMAM), ultrasonically disperse, then add ascorbic acid as a reducing agent, stir evenly with magnetic force, and obtain dendritic PAMAM / graphene / montmorillonite mixed solution; wherein, 15 parts by weight of graphene oxide, 62 parts by weight of water, 2 parts by weight of nano-montmorillonite, 20 parts by weight of polyamide-amine dendrimer, 1 part by weight of ascorbic acid; the time of ultrasonic dispersion is 1h, the time of magnetic stirring is 9h;

[0043] (2) Add calcium hydroxide suspension to the mixed solution prepared in step (1), drop into sulfuric acid solution, heat up to react, then add crystallization directing agent, filter and dry to obtain calcium sulfate whiskers and A hybrid of dendritic PAMAM / graphene / montmorillonite; wherein, 60 parts by weight of mixed solution, 22 parts by weight of calcium hydroxide suspens...

Embodiment 3

[0051] The preparation process is:

[0052] (1) Disperse graphene oxide in water, add nano-montmorillonite, polyamide-amine dendritic molecule (PAMAM), ultrasonically disperse, then add ascorbic acid as a reducing agent, stir evenly with magnetic force, and obtain dendritic PAMAM / graphene / montmorillonite mixed solution; wherein, 20 parts by weight of graphene oxide, 48 parts by weight of water, 4 parts by weight of nano-montmorillonite, 25 parts by weight of polyamide-amine dendrimer, 3 parts by weight of ascorbic acid; the time of ultrasonic dispersion is 3h, the time of magnetic stirring is 9h;

[0053] (2) Add calcium hydroxide suspension to the mixed solution prepared in step (1), drop into sulfuric acid solution, heat up to react, then add crystallization directing agent, filter and dry to obtain calcium sulfate whiskers and A hybrid of dendritic PAMAM / graphene / montmorillonite; wherein, 52 parts by weight of mixed solution, 25 parts by weight of calcium hydroxide suspen...

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Abstract

The invention provides automobile brake pad graphene hybrid / PEEK plastic and a reparation method. Firstly, a dendritic PAMAM / graphene / montmorillonoid mixed solution is prepared, then, a calcium hydroxide suspension and a sulfuric acid solution are added to react, a crystallization guide agent is added and a calcium sulfate whisker and dendritic PAMAM / graphene / montmorillonoid hybrid is obtained; finally, the hybrid is dissolved in diphenyl sulfone to react with 4,4-difluorodiphenyl ketone, benzenediol, a catalyst and potassium carbonate, and the automobile brake pad graphene hybrid / PEEK plasticis obtained. According to the method, polyamide-amine dendritic molecules are grafted with graphene and nano montmorillonoid, meanwhile, calcium sulfate whiskers are prepared in a hybridization manner, the obtained automobile brake pad graphene hybrid / PEEK plastic has excellent friction performance, high strength, stable performance and low cost, the defects that existing semimetal brakes are easy to corrode and high-performance fiber brakes are high in cost can be overcome effectively, and the plastic can be widely applied to the field of automobile brakes.

Description

technical field [0001] The invention relates to the field of automobile materials, in particular to the preparation of brake pads, in particular to a graphene hybrid / polyether ether ketone plastic for automobile brake pads and a preparation method thereof. Background technique [0002] With the rapid development of my country's automobile industry, the power, speed and load of automobiles are increasing day by day, and the operating conditions are becoming increasingly severe. Therefore, higher requirements are put forward for automobile brake friction materials. Automobile brake pads are the key parts of motor vehicle brakes, which are related to the safety of automobile operation, and their development is closely related to the development of automobiles. The function of the car brake pad is to absorb the kinetic energy of the car, convert the kinetic energy of the car into heat energy and other forms of energy, so that the car brakes, and its performance determines the re...

Claims

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Application Information

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IPC IPC(8): C08L61/16C08L87/00C08K13/04C08K7/08C08K7/00C08K3/04C08K3/34C08G8/02
CPCC08L61/16C08G8/02C08K2201/011C08L87/00C08K13/04C08K7/08C08K7/00C08K3/042C08K3/346
Inventor 陈庆
Owner CHENDU NEW KELI CHEM SCI CO LTD
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