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A kind of high temperature resistant graphite nylon gasket material and preparation method thereof

A gasket material and high-temperature-resistant technology, applied in the field of high-temperature-resistant graphite nylon gasket materials and their preparation, can solve the problems of low tensile strength, low compressive strength, poor mechanical properties, and poor comprehensive performance, and achieve improved comprehensive performance. Mechanical properties, simple production process, and the effect of improving mechanical properties

Active Publication Date: 2016-05-11
ANHUI MENGLING PRECISION ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are gaskets filled with nylon 66 filled with glass fiber, nylon 66 filled with polytetrafluoroethylene, and nylon 66 filled with carbon fiber, but the above materials cannot have the excellent performance of each component at the same time, the comprehensive performance is not good, and the mechanical properties are not good. The tensile strength and compressive strength are not high, the rebound ability is poor, the wear resistance and high temperature resistance are poor

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A high-temperature-resistant graphite nylon gasket material, consisting of the following components in parts by weight: 6650 parts of nylon, 10 parts of graphite, 8 parts of polytetrafluoroethylene, 1 part of butylenediamine, 0.5 parts of hexamethylenediamine, grafted maleic anhydride 1 part of polyphenylene ether, 0.15 parts of carbon fiber, 5 parts of aluminum bronze powder, 1.2 parts of paraben ester, 1.5 parts of flame-retardant red phosphorus, 4 parts of acylated lactam, 3 parts of isopropyltriethoxysilane, 5 parts of decabromodiphenylethane, 0.8 parts of polymerized polyhindered phenol.

[0021] Preparation:

[0022] (1) Add graphite and diamine into an ethanol solvent, ultrasonically disperse for 1 hour, heat up to 70°C, protect with nitrogen, and mix uniformly for 1 hour to obtain a modified graphite suspension;

[0023] (2) Nylon 66 is ground to obtain 80 mesh nylon 66 powder;

[0024] (3) Slowly add the nylon 66 powder prepared in step (2) to the modified gr...

Embodiment 2

[0027] A high-temperature-resistant graphite nylon gasket material, which consists of the following components in parts by weight: 6655 parts of nylon, 13 parts of graphite, 9 parts of polytetrafluoroethylene, 2 parts of octane diamine, 1.5 parts of maleic anhydride grafted polyphenylene ether, 0.16 parts of carbon fiber, 7 parts of aluminum bronze powder, 1.3 parts of paraben ester, 2.2 parts of flame-retardant red phosphorus, 45 parts of toluene-2,4-diisocyanate, 4 parts of isopropyltriethoxysilane, decabromo 6 parts of diphenylethane, 1 part of trioctyl phosphite.

[0028] Preparation:

[0029] (1) Add graphite and diamine to ethanol solvent, ultrasonically disperse for 1 hour, heat up to 80°C, protect with nitrogen, and mix uniformly for 1 hour to obtain a modified graphite suspension;

[0030] (2) Nylon 66 is ground to obtain 100 mesh nylon 66 powder;

[0031] (3) Slowly add the nylon 66 powder prepared in step (2) to the modified graphite suspension in step (1), mix we...

Embodiment 3

[0034] A high temperature resistant graphite nylon gasket material, which consists of the following components in parts by weight: 6660 parts of nylon, 15 parts of graphite, 10 parts of polytetrafluoroethylene, 3 parts of dodecyl diamine, maleic anhydride grafted polyphenylene 2 parts of ether, 0.17 parts of carbon fiber, 8 parts of aluminum bronze powder, 3 parts of paraben, 2.5 parts of flame-retardant red phosphorus, 6 parts of acid chloride, 5 parts of isopropyltriethoxysilane, decabromodiphenyl 8 parts of ethane, 1.2 parts of calcium chloride.

[0035] Preparation:

[0036] (1) Add graphite and diamine into an ethanol solvent, ultrasonically disperse for 1 hour, heat up to 80°C, protect with nitrogen, and mix uniformly for 2 hours to obtain a modified graphite suspension;

[0037] (2) Nylon 66 is ground to obtain 100 mesh nylon 66 powder;

[0038] (3) Slowly add the nylon 66 powder prepared in step (2) to the modified graphite suspension in step (1), mix well and distil...

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Abstract

The invention discloses a high-temperature-resistant graphite-nylon gasket material which is prepared from the following components in parts by weight: 50-60 parts of nylon 66, 10-15 parts of graphite, 8-10 parts of polytetrafluoroethylene, 1.5-3 parts of diamine, 0.5-2 parts of maleic anhydride grafted polyphenylether, 0.15-0.17 part of carbon fiber, 5-8 parts of aluminium bronze powder, 1.2-1.3 parts of methyl p-hydroxybenzoate, 1.5-2.5 parts of flame-retardant red phosphorus, 4-6 parts of activator, 3-5 parts of coupling agent, 5-8 parts of flame retardant and 0.8-1.2 parts of temperature-resistant antiaging agent. The nylon 66 used as the raw material enhances the comprehensive mechanical properties of the material; the polytetrafluoroethylene enhances the weather resistance and wear resistance; the graphite can enhance the weather resistance and perform a self-lubricating function; the diamine is utilized to modify the graphite, thereby enhancing the interface interaction between the graphite oxide and nylon and obviously enhancing the high temperature resistance; and the production technique is simple and has the advantages of stable quality and no environmental pollution.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a high-temperature-resistant graphite nylon gasket material and a preparation method thereof. Background technique [0002] A gasket is a mechanical seal between two objects, and since the machined surface cannot be perfect, the gasket can be used to fill its irregularities. Gaskets are usually made of sheet materials such as rubber, metal, cork, felt, fiberglass or plastic polymers. With the development of science and technology, gaskets are used more and more widely in electronic devices. At the same time, the performance requirements of gaskets are getting higher and higher, such as shockproof, waterproof, breathable, corrosion-resistant, weather-resistant, and high-temperature resistant. [0003] Nylon is a common engineering plastic, widely used in electrical and electronic, household appliances, electromechanical industry, automotive appliances and other fields. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L77/06C08L27/18C08K13/06C08K3/04C08K7/06C08K3/08C08K3/02C08K5/03
CPCC08L77/06C08L2201/08C08L2205/03C08L27/18C08L51/08C08K13/06C08K9/04C08K3/04C08K7/06C08K2003/085C08K2003/026C08K5/03
Inventor 凌巧钱胜利
Owner ANHUI MENGLING PRECISION ELECTRONICS
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