Flame-retardant bismaleimide resin composition and preparation method thereof

A technology of bismaleimide resin and maleimide resin, applied in the field of bismaleimide resin composition and its preparation, flame retardant resin composition and its preparation, can solve the mechanical properties of resin Damage, environmental pollution and other problems, to achieve the effect of flame retardant performance and thermal stability improvement, improve dispersion effect, impact performance improvement

Inactive Publication Date: 2015-03-25
EAST CHINA UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The traditional flame retardant method is mainly to increase the flame retardant level of the polymer by adding halogenated flame retardants such as bromine compounds and antimony oxides, but this will cause varying degrees of pollution to the environment. In additi

Method used

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  • Flame-retardant bismaleimide resin composition and preparation method thereof
  • Flame-retardant bismaleimide resin composition and preparation method thereof
  • Flame-retardant bismaleimide resin composition and preparation method thereof

Examples

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Example Embodiment

[0029] Example 1

[0030] 1. Surface treatment of carbon nanotubes

[0031] (1) Use a mixture of concentrated sulfuric acid and concentrated nitric acid with a weight ratio of 3:1 to reflux 0.5 parts of carbon nanotubes, and graft carboxyl and hydroxyl polar groups on the carbon nanotubes to obtain modified carbon nanotubes. tube;

[0032] The process of the reflux treatment is as follows: first sonicate at 50°C and 60Hz for 1 hour, then reflux at 100°C for 2 hours; wash with 20 times distilled water after acidification, and use a microporous membrane to filter under reduced pressure until the filtrate pH Value reaches 7;

[0033] (2) Aminating the modified carbon nanotubes obtained in step (1) with a 2% ethanol solution of APTES to obtain modified carbon nanotubes grafted with amino groups;

[0034] The process of the amination treatment is as follows: anhydrous ethanol and deionized water are made into a solution with a volume ratio of 95:5, which is used as a solvent, the acidified...

Example Embodiment

[0043] Example 2

[0044] 1. Surface treatment of carbon nanotubes

[0045] (1) The carbon nanotubes are refluxed with a mixture of concentrated sulfuric acid and concentrated nitric acid in a weight ratio of 3:1, and carboxyl groups and hydroxyl polar groups are grafted onto the carbon nanotubes to obtain modified carbon nanotubes;

[0046] The process of the reflux treatment is as follows: first sonicate at 50°C and 60Hz for 1 hour, then reflux at 100°C for 2 hours; wash with 20 times distilled water after acidification, and use a microporous membrane to filter under reduced pressure until the filtrate pH Value reaches 7;

[0047] (2) Aminating the modified carbon nanotubes obtained in step (1) with a 2% ethanol solution of APTES to obtain modified carbon nanotubes grafted with amino groups;

[0048] The process of the amination treatment is as follows: anhydrous ethanol and deionized water are made into a solution with a volume ratio of 95:5, which is used as a solvent, the acidifie...

Example Embodiment

[0055] Example 3

[0056] 1. Surface treatment of carbon nanotubes

[0057] (1) The carbon nanotubes are refluxed with a mixture of concentrated sulfuric acid and concentrated nitric acid in a weight ratio of 3:1, and carboxyl groups and hydroxyl polar groups are grafted onto the carbon nanotubes to obtain modified carbon nanotubes;

[0058] The process of the reflux treatment is as follows: first sonicate at 50°C and 60Hz for 1 hour, then reflux at 100°C for 2 hours; wash with 20 times distilled water after acidification, and use a microporous membrane to filter under reduced pressure until the filtrate pH Value reaches 7;

[0059] (2) Aminating the modified carbon nanotubes obtained in step (1) with a 2% ethanol solution of APTES to obtain modified carbon nanotubes grafted with amino groups;

[0060] The process of the amination treatment is as follows: anhydrous ethanol and deionized water are made into a solution with a volume ratio of 95:5, which is used as a solvent, the acidifie...

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Abstract

The invention discloses a flame-retardant bismaleimide resin and a preparation method thereof, and belongs to the field of polymer composite materials. The flame-retardant bismaleimide resin comprises the following raw materials by weight: 50 to 60 parts of a bismaleimide resin, 40 to 50 parts of an allylic compound, 1 to 10 parts of a flame retardant, and 0.5 to 1.5 parts of carbon nano-tubes. The bismaleimide resin prepared according to the preparation method is excellent in flame retardant property, so that the problem of low flame-retardant grade of the conventional bismaleimide resin is greatly solved; moreover, the flame-retardant bismaleimide resin is outstanding in heat resistance and excellent in mechanical property, so as to serve as a high-performance resin matrix, an adhesive, an insulating paint and the like in the high-tech fields such as the aerospace field, the electronic apparatus field, and the transportation and communication field, and be wide in application range. The preparation method is simple to operate, environmental-friendly and high in feasibility.

Description

technical field [0001] The invention relates to a flame retardant resin composition and a preparation method thereof, in which it relates to a bismaleimide resin composition containing aminated carbon nanotubes and a flame retardant DOPO and a preparation method thereof, belonging to polymer composite field of materials technology. Background technique [0002] Bismaleimide (BMI) is a reactive polyimide. Compared with other thermosetting resins, it has excellent high temperature resistance, mechanical properties, chemical resistance, and radiation resistance. It has been widely used In aerospace, aviation, machinery, electronics and other materials. Nowadays, the requirements of some cutting-edge fields are becoming more and more stringent, and there are higher requirements for the flame retardancy of resins. Although compared with thermosetting resins such as epoxy, the flame retardancy of bismaleimide resins reaches a certain level. However, it still cannot meet the flam...

Claims

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Application Information

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IPC IPC(8): C08L79/08C08K13/06C08K9/06C08K7/00C08K5/5313
CPCC08K13/06C08K5/5313C08K7/24C08K9/02C08K9/06C08K2201/003C08K2201/004C08K2201/006C08L2201/02C08L2201/08
Inventor 吴唯王铮张禄冲张雪薇
Owner EAST CHINA UNIV OF SCI & TECH
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