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Reactive phosphorus-containing epoxy resin flame-retardant curing agent and preparation method thereof

A technology of epoxy resin and nitrogen epoxy resin, which is applied in the field of reactive phosphorus-containing epoxy resin flame retardant curing agent and its preparation, can solve the problems of influence on the mechanical properties of the matrix, restrictions on wide application, poor compatibility, etc., and achieve Good mechanical properties, easy control, and convenient post-processing effects

Inactive Publication Date: 2017-12-15
SHENYANG INSTITUTE OF CHEMICAL TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the poor compatibility with the matrix, the traditional additive flame retardants are easy to migrate and have a serious impact on the mechanical properties of the matrix. Although some studies have shown that graphene, carbon nanotubes, etc. At the same time, it does not destroy its mechanical properties, but its wide application is limited by the high price of nanoscale additives

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Add 19.498g (0.1mol) of DCPPO, 100ml of 1,2-dichloroethane and 10ml of DMF into a 250ml three-necked flask equipped with a condenser tube, nitrogen conduit, thermometer and magnetic stirring, and accurately measure 40.850g (0.3mol) of MXDA , 10ml of 1,2 dichloroethane was added to the constant pressure dropping funnel, the dropping rate was controlled, the dropping was completed within 2 hours, and the reaction was completed under nitrogen protection at 20°C for 6 hours. The product was filtered, washed, and then dried in a vacuum oven at 60°C for 12 hours to obtain a white solid powder.

Embodiment 2

[0027] Add 19.498g (0.1mol) of DCPPO and 110ml of methylene chloride as a solvent in a 250ml three-necked flask equipped with a condenser, a nitrogen conduit, a thermometer and a magnetic stirrer, and accurately measure 40.850g (0.3mol) of MXDA to control the rate of addition. The dropwise addition was completed within 2 hours, and the reaction was completed under nitrogen protection at 20°C for 6 hours. The product was filtered, washed, and then dried in a vacuum oven at 60°C for 12 hours to obtain a white solid powder.

Embodiment 3

[0029] Add 19.498g (0.1mol) of DCPPO and 110ml of methylene chloride as a solvent in a 250ml three-neck flask equipped with a condenser, a nitrogen conduit, a thermometer and a magnetic stirrer, and accurately measure 47.659g (0.35mol) of MXDA to control the rate of addition. The dropwise addition was completed within 2 hours, and the reaction was completed under nitrogen protection at 20°C for 6 hours. The product was filtered, washed, and then dried in a vacuum oven at 60°C for 12 hours to obtain a white solid powder.

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PUM

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Abstract

The invention provides a reactive phosphorus-containing epoxy resin flame-retardant curing agent and a preparation method thereof, and relates to a curing agent and a preparation method thereof. Raw materials for preparation comprise dichlorophenylphosphine oxide and m-xylylenediamine. The preparation method of the flame retardant comprises the following steps: reacting the dichlorophenylphosphine oxide (DCPPO) and the m-xylylenediamine (MXDA) with stirring for some time while inert gas is introduced; and performing filtration, washing, drying and other treatment on the product to obtain a white solid. The compound has favorable compatibility with epoxy resin, can be cured with the epoxy resin into a whole and has less influence on the mechanical properties of a cured product; and the compound can serve as the epoxy resin curing agent, and can effectively improve the flame retardancy of the epoxy resin. The process provided by the invention is simple in production conditions, high in product purity and yield and convenient in a posttreatment process.

Description

technical field [0001] The invention relates to a curing agent and a preparation method thereof, in particular to a reactive phosphorus-containing epoxy resin flame-retardant curing agent and a preparation method thereof. Background technique [0002] Epoxy resin is a widely used high polymer, which is widely used in casting, coating, adhesive and composite materials, showing excellent mechanical and electrical properties. Nevertheless, their flammability limits their applications in electronics (printed circuit boards, electronic packaging, etc.) and transportation (cars, trains, and airplanes). Therefore, the development of flame-retardant epoxy resin plays a very important role in broadening its application fields. [0003] At present, many technologies have been widely used in the flame retardant technology of epoxy resin. Among them, halogenated flame retardants are widely used in the flame retardant of epoxy resin because of their excellent flame retardant effect. Ma...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G59/50C07F9/44
CPCC08G59/504C07F9/4419C07F9/448
Inventor 梁兵刘晓丽
Owner SHENYANG INSTITUTE OF CHEMICAL TECHNOLOGY
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