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A kind of preparation method of flame-retardant multi-arm epoxy resin

An epoxy resin and arm-shaped technology, applied in the field of material chemistry, can solve problems such as secondary disasters and heavy smog

Active Publication Date: 2021-02-09
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional halogen-containing flame retardants have excellent flame retardant effects, but when they burn, they release toxic and corrosive gases and produce large smoke, which will cause "secondary disasters" while inhibiting combustion, so they are gradually eliminated

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0008] The preparation of embodiment 1 flame-retardant multi-arm type epoxy resin

[0009] (1) Preparation of flame-retardant six-arm monomer: Weigh 11.34 grams of melamine into a four-necked flask, add 20 mL of dimethyl sulfoxide, and dissolve it in an oil bath at 80 ° C. After it is completely dissolved, add Add 15.12g of HDT (trimer of HDI), add 7-9 drops of DBTDL, raise the temperature to 100°C, blow in nitrogen, and react for 12h. After the reaction was completed, the product was filtered with suction, and then the solid was washed three times with ethanol and deionized water, centrifuged, filtered with suction, and finally placed in a vacuum oven at 80° C. for 48 hours to obtain a yellow powder.

[0010] (2) Preparation of flame-retardant multi-armed epoxy resin: Take 16.24g of bisphenol A diglycidyl ether and add it to a four-neck flask equipped with a stirring bar, then add 2mL of triethanolamine as a catalyst, put the oil bath Raise the temperature to 165°C, stir at ...

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PUM

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Abstract

The invention discloses a method for preparing a flame-retardant multi-arm epoxy resin, which belongs to the technical field of material chemistry. The specific content is the preparation of flame-retardant multi-arm monomer and the preparation of flame-retardant multi-arm epoxy resin. The amino group in melamine reacts with the NCO in HDT (trimer of HDI) to generate a rigid mono-unit with six amino groups. body, and then let it undergo a ring-opening reaction with bisphenol A diglycidyl ether to generate a flame-retardant multi-armed epoxy resin. It is a halogen-free, low-toxic, smoke-free, low-pollution, low-corrosion flame-retardant epoxy resin, and a high-efficiency multifunctional composite flame-retardant epoxy resin.

Description

technical field [0001] The invention relates to a method for preparing a flame-retardant multi-arm epoxy resin, specifically the preparation of a flame-retardant multi-arm monomer and the preparation of a flame-retardant multi-arm epoxy resin, belonging to the technical field of material chemistry. Background technique [0002] All over the world, with the application of resins more and more widely, the flame retardancy of resins has attracted more and more attention. Traditional halogen-containing flame retardants have excellent flame retardant effects, but they release toxic and corrosive gases during combustion and produce large smoke, which will cause "secondary disasters" while inhibiting combustion, so they are gradually eliminated. Therefore, in recent years, researchers from all over the world are striving to develop flame retardants that are halogen-free, low-toxic, smoke-free, low-pollution, and low-corrosion, and high-efficiency multifunctional composite flame ret...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G18/58C08G18/32C08G18/73C08G18/79
CPCC08G18/3246C08G18/584C08G18/73C08G18/792
Inventor 姚伯龙陈昆胡旭灿刘嘉成
Owner JIANGNAN UNIV