A kind of rosin-based reactive flame retardant curing agent and preparation method thereof

A reactive flame retardant and curing agent technology, which is applied in chemical instruments and methods, organic chemistry, compounds of Group 5/15 elements of the periodic table, etc., can solve the problems of reducing the mechanical properties and temperature resistance of materials, and achieve excellent Halogen-free flame retardant properties, good application prospects, the effect of a wide range of sources

Active Publication Date: 2022-07-26
ACC BEIJING SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The reported rosin-based resins or curing agents have not been modified for flame retardancy. Most of them use additive flame retardants to achieve the flame retardancy of the resin matrix, but the mechanical properties of the material will be greatly reduced while achieving the flame retardancy function. and temperature resistance

Method used

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  • A kind of rosin-based reactive flame retardant curing agent and preparation method thereof
  • A kind of rosin-based reactive flame retardant curing agent and preparation method thereof
  • A kind of rosin-based reactive flame retardant curing agent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Add 150mL of toluene as a solvent to a 500mL three-necked flask. The three-necked flask is equipped with a thermometer, a spherical condenser, a magnetron, and a gas inlet pipe. Then add 38.6g of maleopimaric anhydride slowly into the three-necked flask. After it is completely dissolved, slowly drip Add the toluene solution of 21.6g DOPO, heat to 60°C for reflux, react at reflux temperature for 6 hours, after the reaction, return to room temperature, spin off excess solvent, vacuum dry at 80°C for 4 hours, recrystallize and purify to obtain the target product.

[0044]A catalyst composed of 60 grams of the flame retardant curing agent of the above structure, 100 grams of epoxy resin, 2 grams of tetramethylammonium chloride and 1 gram of triethylamine was mixed uniformly to obtain a mixed resin. The mixture was pre-cured at 90° C. for 1 hour, and then post-cured at 130° C. for 1 hour to obtain a cured rosin-based curing agent resin.

[0045] After testing, the cured prod...

Embodiment 2

[0047] Add 150mL of toluene as a solvent to a 500mL three-necked flask. The three-necked flask is equipped with a thermometer, a spherical condenser, a magnetron, and a gas inlet pipe. Then, 42.6g of rosin-based amine is added to the three-necked flask. After it is completely dissolved, slowly add 30.6g of DOPO. The toluene solution was heated to 70°C under reflux, reacted at the reflux temperature for 8 hours, after the reaction was completed, returned to room temperature, the excess solvent was evaporated by rotary evaporation, vacuum dried at 80°C for 4 hours, and recrystallized to obtain a pale yellow powder.

[0048] Mix 80 grams of the flame retardant curing agent with the above structure and 100 grams of epoxy resin to obtain a mixed resin. The mixture was pre-cured at 90° C. for 40 minutes, and then post-cured at 120° C. for 2 hours to obtain a cured rosin-based curing agent resin.

[0049] After testing, the cured product prepared as a flame retardant curing agent for...

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Abstract

The invention relates to a rosin-based reactive flame-retardant curing agent and a preparation method thereof. The rosin-based reactive flame-retardant curing agent described in the technical scheme of the present invention is prepared by reacting rosin-based acid anhydride or rosin-based amine with DOPO, and is prepared by reacting with DOPO. Phosphorus DOPO reacts with rosin-based acid anhydride or rosin-based amine in one step to obtain a halogen-free flame retardant rosin-based curing agent, which can be used in different epoxy resin or bio-based epoxy resin systems. The hydrogen phenanthrene ring structure of the cured product has high glass transition temperature and mechanical properties, and the cured product system has excellent flame retardant effect, and the flame retardant system is a halogen-free system, which meets the needs of today's ecological environment protection. The curing agent can be well mixed with the epoxy resin during processing, and can not only be used as the curing agent of the epoxy resin, but also can effectively improve the flame retardant performance of the epoxy resin.

Description

technical field [0001] The invention relates to a rosin-based reactive flame retardant curing agent and a preparation method thereof, and relates to the technical field of flame retardant and the field of biological-based curing agent. Background technique [0002] Resin-based composite materials have a series of advantages such as high specific strength, high specific modulus, and designable mechanical properties. They are the most ideal materials for lightweight and efficient structural design, and they occupy an important position in the field of materials. At present, the matrix resin epoxy resin, unsaturated polyester, phenolic resin, polyimide and bismaleimide and their curing agents are basically derived from petroleum. However, the reserves of fossil geological resources on earth are limited and non-renewable. The massive extraction and processing of petrochemical resources will result in huge carbon emissions and potential environmental disasters, including smog. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07F9/6574C08G59/42C08G59/50
CPCC07F9/657172C08G59/423C08G59/504
Inventor 张旭锋益小苏仝建峰齐僖
Owner ACC BEIJING SCI & TECH CO LTD
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