Preparation method for modified polyamide composite material

A composite material and polyamide technology, which is applied in the field of preparation of modified polyamide composite materials, can solve the problems of poor mechanical properties, poor impact resistance and poor processing properties of the composition, and achieves improved mechanical impact resistance and reduced Water absorption, coefficient of friction, and high bonding strength

Inactive Publication Date: 2019-02-12
安徽菲扬新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, it also has the defects of high water absorption and poor impact resistance, which limits its development in the trend of plastic alloy strip steel materials.
[0003] Chinese patent CN100352862C discloses a polyamide resin composition with low water absorption rate, which mainly solves the problem of poor mechanical properties of the composition in the prior art
However, the composition has high hardness, poor toughness, and poor processability

Method used

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  • Preparation method for modified polyamide composite material

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Effect test

Embodiment 1

[0030] A preparation method of modified polyamide composite material, comprising the following steps:

[0031] (1) Put an appropriate amount of maleic anhydride and polyphenylene ether into a high-speed mixer and mix for 15 minutes, then add it to a twin-screw extruder, melt and extrude at 275 degrees Celsius to obtain maleic anhydride grafted polyphenylene ether ether;

[0032] (2) Add graphene oxide into deionized water, stir evenly, disperse in an ultrasonic disperser for 15 minutes, prepare a 1 g / ml graphene oxide solution, and add 2,3-epoxy to the graphene aqueous solution Propyltrimethylammonium chloride until no new brown flocs are produced;

[0033] (3) The mixture prepared in step (2) is repeatedly centrifuged and washed until the supernatant does not contain chloride ions, and the filter material is placed in a vacuum drying oven at 80 degrees Celsius to dry to obtain modified graphene oxide;

[0034] (4) Add the maleic anhydride grafted polyphenylene ether prepare...

Embodiment 2

[0046] A preparation method of modified polyamide composite material, comprising the following steps:

[0047] (1) Put an appropriate amount of maleic anhydride and polyphenylene ether into a high-speed mixer and mix for 20 minutes, then add it to a twin-screw extruder, melt and extrude at 295 degrees Celsius to obtain maleic anhydride grafted polyphenylene ether ether;

[0048] (2) Add graphene oxide into deionized water, stir evenly, put it into an ultrasonic disperser and disperse for 25 minutes, prepare a 1 g / ml graphene oxide solution, add 2,3-epoxy to the graphene aqueous solution Propyltrimethylammonium chloride until no new brown flocs are produced;

[0049] (3) The mixture prepared in step (2) is repeatedly centrifuged and washed until the supernatant does not contain chloride ions, and the filter material is placed in a vacuum oven at 90 degrees Celsius to dry to obtain modified graphene oxide;

[0050] (4) Add the maleic anhydride grafted polyphenylene ether prepa...

Embodiment 3

[0062] A preparation method of modified polyamide composite material, comprising the following steps:

[0063] (1) Put an appropriate amount of maleic anhydride and polyphenylene ether into a high-speed mixer and mix for 16 minutes, then add them to a twin-screw extruder, melt and extrude at 285 degrees Celsius to obtain maleic anhydride grafted polyphenylene ether ether;

[0064] (2) Add graphene oxide into deionized water, stir evenly, put it into an ultrasonic disperser and disperse for 22 minutes, prepare a 1 g / ml graphene oxide solution, add 2,3-epoxy to the graphene aqueous solution Propyltrimethylammonium chloride until no new brown flocs are produced;

[0065] (3) The mixture prepared in step (2) is repeatedly centrifuged and washed until the supernatant does not contain chloride ions, and the filter material is placed in a vacuum oven at 86 degrees Celsius for drying to obtain modified graphene oxide;

[0066] (4) Add the maleic anhydride grafted polyphenylene ether...

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Abstract

The invention discloses a preparation method for a modified polyamide composite material, which relates to the field of novel polyamide materials. The preparation method comprises the following steps:preparation of maleic anhydride-grafted polyphenyl ether; surface treatment of graphene oxide; preparation of modified graphene oxide; preparation of polyphenyl ether-grafted graphene oxide; and preparation of modified polyamide composite material. According to the preparation method disclosed by the invention, by grafting polyphenyl ether onto the graphene oxide to modify polyamide, the grapheneoxide grafted onto the polyphenyl ether is highly compatible with the polyamide, the binding force is high, and the tensile strength and mechanical impact resistance of the composite material can beeffectively increased, and moreover, the water absorption and friction coefficient of the composite material can be effectively decreased.

Description

technical field [0001] The invention relates to the field of new polyamide materials, in particular to a preparation method of a modified polyamide composite material. Background technique [0002] Polyamide, also known as nylon, has always been the top five general-purpose engineering plastics in terms of demand, with an average annual demand growth rate of up to 10%. It has good mechanical properties, durability, corrosion resistance and heat resistance, and is widely used in electrical and electronic, automobile, construction, office equipment, machinery, aerospace and other industries. However, it also has the defects of high water absorption and poor impact resistance, which limits its development in the trend of plastic alloy strip steel materials. [0003] Chinese patent CN100352862C discloses a low water absorption polyamide resin composition, which mainly solves the problem of poor mechanical properties of the composition in the prior art. The present invention pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L77/00C08L51/08C08K9/04C08K3/04C08K5/098C08F283/08C08F222/06
CPCC08F283/08C08L77/00C08L51/08C08K9/04C08K3/042C08K5/098C08F222/06
Inventor 岳朝雷
Owner 安徽菲扬新材料有限公司
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