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Preparation method of high-strength MC nylon modified fiber composite base material

A technology of modified fiber and composite base material, which is applied in the field of preparation of high-strength MC nylon modified fiber composite base material, can solve the problems of reduced toughness and reduced strength, and achieve a reasonable and scientific preparation effect

Inactive Publication Date: 2016-12-07
SUZHOU RUI TE JIE CHEM PROD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, adding mineral powder often reduces the strength while toughening; glass fiber reinforcement usually reduces the toughness; and adding graft copolymerized elastomers to toughen often sacrifices the valuable rigidity, dimensional stability, and heat resistance of the material. For the price, so it is necessary to find a modifier to improve the overall performance of MC nylon

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] In an ice-salt bath, add 30ml of concentrated sulfuric acid to a three-neck flask containing 1g of graphite (325 mesh), stir the mixture at -15°C for a certain period of time for 12 hours, then stir at 0°C for 5 hours, then slowly add 2g potassium permanganate, heat up to 35°C, after reacting for a certain period of time, add deionized water, then heat up to 90°C, and finally add H 2 o 2 Until the product turns golden yellow to obtain a graphite oxide solution, add 0.2g CTAB to the product, the graphite oxide will quickly settle out in the solution, filter, wash, and vacuum dry at 50°C for 24 hours to obtain a modified graphite oxide modified with CTAB. Graphene.

Embodiment 2

[0028] In an ice-salt bath, add 30ml of concentrated sulfuric acid to a three-neck flask containing 1g of graphite (325 mesh), stir the mixture at -10°C for a certain period of time for 10 hours, then stir at 0°C for 3 hours, then slowly add 2.3g potassium permanganate, heat up to 35°C, after reacting for a certain period of time, add deionized water, then heat up to 90°C, and finally add H 2 o 2 Until the product turns golden yellow to obtain a graphite oxide solution, add 0.3g CTAB to the product, the graphite oxide will quickly settle out in the solution, filter, wash, and vacuum dry at 50°C for 24 hours to obtain a modified graphite oxide modified with CTAB. Graphene.

Embodiment 3

[0030] In an ice-salt bath, add 30ml of concentrated sulfuric acid to a three-neck flask containing 1g of graphite (325 mesh), stir the mixture at -20°C for a certain period of time for 12 hours, then stir at 0°C for 6 hours, then slowly add 3g potassium permanganate, heat up to 35°C, after reacting for a certain period of time, add deionized water, then heat up to 90°C, and finally add H 2 o 2 Until the product turns golden yellow to obtain a graphite oxide solution, add 0.1g CTAB to the product, the graphite oxide will quickly settle out in the solution, filter, wash, and vacuum dry at 50°C for 24 hours to obtain a modified graphite oxide modified with CTAB. Graphene.

[0031] b. Preparation of graphite oxide with a high degree of oxidation;

[0032] B. adopt cetyltrimethylammonium bromide to modify the graphite oxide obtained in step a, and obtain graphene oxide by ultrasonic to the obtained modified graphite oxide;

[0033] c. Preparation of MC nylon / modified graphene...

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Abstract

The invention discloses a preparation method of a high-strength MC nylon modified fiber composite base material. The method includes: preparing graphene oxide high in oxidation degree; modifying the graphene oxide; preparing a high-strength MC nylon composite junction brick. The preparation method has the advantages that asphalt-based carbon fibers are used to increase the mechanical performance of the material, harmful gas and dust substances in tail gas can be absorbed and removed greatly, and the prepared MC nylon is good in comprehensive performance; auxiliary materials such as plasticizer, anti-aging agent, self-made modified hydrotalcite, attapulgite, nano titanium dioxide, nano cerium oxide and accelerant are used in a coordinated manner, the components of the material are reasonable and scientific in proportion, and the added components can effectively guarantee that the material protected by the components is hard to combust and the material combusted under excessively high temperature is prevented from generated gas harmful to human bodies; compared with the hydrotalcite used in the current market, the material has evident high temperature resistance, fire resistance and flame retardance.

Description

technical field [0001] The invention relates to a method for preparing a high-strength MC nylon modified fiber composite base material, in particular to a method for preparing a MC nylon / modified graphene oxide nanocomposite material. Background technique [0002] Cast nylon (MC nylon) is one of the most widely used engineering plastics. It has the advantages of low cost, high output, high reaction rate and good mechanical properties. It is widely used in the preparation of bearings, gears, pulleys, etc., especially To prepare some large devices that cannot be prepared by compression molding or extrusion molding, MC nylon has gradually replaced some metal materials, such as copper, aluminum, steel and iron, in many fields. However, compared with metal materials, MC nylon still has shortcomings such as high elastic modulus, poor low-temperature toughness, low impact strength, and poor dimensional stability, which limit the application of MC nylon to a certain extent. Extensi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L77/02C08K13/06C08K9/04C08K9/02C08K3/04C08K3/26C08K3/34C08K3/22C08G69/16
CPCC08L77/02C08G69/16C08K2201/001C08K2201/011C08L2205/16C08L27/18C08K13/06C08K9/04C08K9/02C08K3/04C08K3/26C08K3/346C08K2003/2241C08K2003/2213
Inventor 杨定宽
Owner SUZHOU RUI TE JIE CHEM PROD CO LTD
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