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Phosphazene-based organometallic complex flame-retardant epoxy resin and preparation method thereof

An epoxy resin, organometallic technology, applied in the field of organometallic complex flame retardant epoxy resin and its preparation, can solve problems such as rare research, achieve high mechanical properties, reduce heat release peak, good compatibility sexual effect

Active Publication Date: 2020-09-08
BEIJING TECHNOLOGY AND BUSINESS UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This will become a class of catalytic flame retardants with great application prospects, but there are still few studies on this type of complex flame retardant systems

Method used

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  • Phosphazene-based organometallic complex flame-retardant epoxy resin and preparation method thereof
  • Phosphazene-based organometallic complex flame-retardant epoxy resin and preparation method thereof
  • Phosphazene-based organometallic complex flame-retardant epoxy resin and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] 100g of bisphenol A diglycidyl ether epoxy resin with an epoxy value of 0.51 was heated to 180°C, and 12g of Zn-H 6 L 1 Add it into the epoxy resin, stir for 1 hour, add 32g of DDS into the epoxy resin, stir well, remove the gas in the system under vacuum condition, and then pour it into the preheated mold, first at 120℃ After pre-curing at low temperature for 2 hours, and then curing at 150°C for 4 hours, the obtained epoxy resin cured product has a phosphorus content of about 0.3%, a limiting oxygen index of 31.6%, and a flame-retardant grade of UL94V-0.

Embodiment 2

[0029] 100g of bisphenol A diglycidyl ether epoxy resin with an epoxy value of 0.51 was heated to 50°C, and 5g of Mn-H 6 L 2 Add it into the epoxy resin, stir for 1 hour, add 25g of DDM into the epoxy resin, stir evenly, remove the gas in the system under vacuum conditions, and then pour it into the preheated mold, first at 110 ℃ After pre-curing for 1 hour at 170° C. for 5 hours, the obtained cured epoxy resin contains about 0.1 percent phosphorus, a limiting oxygen index of 30.8 percent, and a flame-retardant grade of UL94V-0.

Embodiment 3

[0031] Heat 100g of bisphenol A diglycidyl ether epoxy resin with an epoxy value of 0.44 to 160°C, lower the temperature to 100°C under stirring conditions and add 8g of Ba-H 6 L 3 Add it into the epoxy resin, stir for 1.5h, then add 27.2g of DDS into the epoxy resin, stir evenly, remove the gas in the system under vacuum conditions, and then pour it into the preheated mold. Pre-cure at 120°C for 1 hour, and then cure at 180°C for 5 hours. The obtained epoxy resin contains about 0.2% phosphorus, the limiting oxygen index is 31.2%, and the flame retardant grade is UL94V-0.

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Abstract

The invention relates to phosphazene-based organometallic complex flame-retardant epoxy resin and a preparation method thereof, and belongs to the technical field of flame-retardant epoxy resin materials obtained by adding specific flame-retardant components into common epoxy resin. According to the invention, an organic metal complex constructed by cyclotriphosphazene azacyclo-ligands is independently used as a flame retardant and is subjected to melt blending with bisphenol A diglycidyl ether epoxy resin at a certain temperature; then a curing agent is added into the flame-retardant epoxy resin, and a curing reaction of the epoxy resin is completed at a certain temperature, so as to obtain an epoxy resin cured product with excellent flame retardance. The prepared flame-retardant epoxy resin is high in flame-retardant efficiency, compact in carbon layer and low in smoke and toxicity in the combustion process, and has a good application prospect.

Description

technical field [0001] The invention designs a phosphazene-based organometallic complex flame-retardant epoxy resin and a preparation method thereof, and belongs to the technical field of adding specific flame-retardant components to ordinary epoxy resins to obtain flame-retardant epoxy resin materials. Background technique [0002] In modern society, epoxy resin is widely used in electronic and electrical materials, engineering and composite materials, building materials, coatings, adhesives and other fields due to its excellent adhesion, chemical stability, and good mechanical properties. . However, the flammability of epoxy resin makes it prone to fire, and it is difficult to self-extinguish after ignition and release a large amount of smoke, which seriously endangers public safety. Therefore, flame retardant modification is an effective way to broaden the application field of epoxy resin. [0003] In order to obtain epoxy resins with better flame-retardant properties a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L63/02C08L87/00C08G83/00
CPCC08L63/00C08G83/008C08L2201/02C08L2201/08C08L87/00
Inventor 许博刘艳婷许准毕晓露钱立军汪玲
Owner BEIJING TECHNOLOGY AND BUSINESS UNIVERSITY
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