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Flame-retardant polyurethane resin and preparation method thereof

A technology of polyurethane resin and epoxy resin, which is applied in the field of polyurethane resin, can solve the problems that the performance cannot meet the production requirements, the dispersion of water-based polyurethane is not complete, and the stability is poor, and achieve high toughness, increased cross-linking degree, and excellent water resistance. Effect

Inactive Publication Date: 2016-05-04
ANHUI ANDA HUATAI NEW MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Water-based polyurethane was first synthesized by Schlack in Germany in 1943. At that time, the water-based polyurethane material was mainly dispersed in water by strong mechanical stirring and a large amount of emulsifier. The water-based polyurethane synthesized by this method was not fully dispersed. , the particle size is large, and the stability is poor, so that its performance cannot meet the production requirements in application.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] A kind of flame retardant polyurethane resin proposed by the present invention, its raw material comprises by weight: 37 parts of organophosphorus polyester polyol, 55 parts of modified toluene diisocyanate, 2.5 parts of diethylene glycol, 1.6 parts of tartaric acid, epoxy resin 7 parts of resin, 0.7 parts of cobalt octanoate, 3 parts of dimethylethanolamine, and 5 parts of bis(2-hydroxyethyl)aniline.

[0018] The preparation method of organophosphorus polyester polyol is as follows: After mixing 1 part of 2-phospho-1,2,4-tricarboxybutane and 4 parts of 1,6-hexanediol in molar parts, pass N 2 As a protective gas, then raise the temperature to 112°C, keep it warm for 2 hours, then add 0.1 part of stannous octoate, raise the temperature to 159°C, keep it warm for 4.8 hours, and hold it in vacuum for 1.5 hours to obtain an organophosphorus polyester polyol.

[0019] Modified toluene diisocyanate is prepared as follows: mix 82 parts of toluene diisocyanate and 1.8 parts of ...

Embodiment 2

[0022] A kind of flame retardant polyurethane resin proposed by the present invention, its raw material comprises by weight: 40 parts of organophosphorus polyester polyol, 52 parts of modified toluene diisocyanate, 4 parts of diethylene glycol, 1.3 parts of tartaric acid, epoxy resin 10 parts of resin, 0.4 parts of cobalt octanoate, 4 parts of dimethylethanolamine, 3.5 parts of bis(2-hydroxyethyl)aniline.

[0023] The preparation method of organophosphorus polyester polyol is as follows: After mixing 2 parts of 2-phospho-1,2,4-tricarboxybutane and 3 parts of 1,6-hexanediol in molar parts, pass N 2 As a protective gas, then raise the temperature to 115°C, keep it warm for 1.7h, then add 0.2 parts of stannous octoate, raise the temperature to 156°C, keep it warm for 5.1h, and keep it under vacuum for 1.2h to obtain an organophosphorus polyester polyol.

[0024] Modified toluene diisocyanate is prepared as follows: mix 85 parts by weight of toluene diisocyanate and 1.5 parts of 1...

Embodiment 3

[0027] A kind of flame retardant polyurethane resin proposed by the present invention, its raw material comprises by weight: 38 parts of organophosphorus polyester polyol, 54 parts of modified toluene diisocyanate, 3 parts of diethylene glycol, 1.5 parts of tartaric acid, epoxy resin 8 parts of resin, 0.6 parts of cobalt octanoate, 3.4 parts of dimethylethanolamine, 4.5 parts of bis(2-hydroxyethyl)aniline.

[0028]The preparation method of organophosphorus polyester polyol is as follows: After mixing 1.2 parts of 2-phospho-1,2,4-tricarboxybutane and 3.8 parts of 1,6-hexanediol in molar parts, pass N 2 As a protective gas, then raise the temperature to 113°C, keep it warm for 1.9h, then add 0.14 parts of stannous octoate, raise the temperature to 158°C, keep it warm for 4.9h, and keep it under vacuum for 1.4h to obtain an organophosphorus polyester polyol.

[0029] Modified toluene diisocyanate is prepared as follows: mix 83 parts of toluene diisocyanate and 1.7 parts of 1,2-di...

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PUM

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Abstract

The invention discloses a flame-retardant polyurethane resin which is prepared from the following raw materials in parts by weight: 37-40 parts of organic phosphorus polyester polyol, 52-55 parts of modified toluene diisocyanate, 2.5-4 parts of diglycol, 1.3-1.6 parts of tartaric acid, 7-10 parts of epoxy resin, 0.4-0.7 part of cobalt octoate, 3-4 parts of dimethylethanolamine and 3.5-5 parts of bis(2-hydroxyethyl)aniline. The invention also discloses a preparation method of the flame-retardant polyurethane resin, which comprises the following steps: uniformly mixing the organic phosphorus polyester polyol and modified toluene diisocyanate, heating, keeping the temperature, cooling, adding the diglycol, tartaric acid, epoxy resin and acetone, uniformly mixing, adding the cobalt octoate, heating, and keeping the temperature to obtain a material a; cooling the material a, dropwisely adding a solution containing the dimethylethanolamine and bis(2-hydroxyethyl)aniline, heating, and keeping the temperature to obtain a material b; and regulating the pH value of the material b to neutrality, and removing the acetone in vacuum to obtain the flame-retardant polyurethane resin.

Description

technical field [0001] The invention relates to the technical field of polyurethane resins, in particular to a flame-retardant polyurethane resin and a preparation method thereof. Background technique [0002] Water-based polyurethane was first synthesized by Schlack in Germany in 1943. At that time, the water-based polyurethane material was mainly dispersed in water by strong mechanical stirring and a large amount of emulsifier. The water-based polyurethane synthesized by this method was not completely dispersed. , the particle size is large, and the stability is poor, so that its performance cannot meet the production requirements in application. Afterwards, through people's research and development, hydrophilic groups were introduced into polyurethane, and water-based polyurethane that can be self-dispersed in water was synthesized. As a new type of material, compared with traditional solvent-based polyurethane, water-based polyurethane has less odor, is more environment...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/79C08G18/66C08G18/46C08G18/58C08G18/32C08G18/34C08G18/12
CPCC08G18/797C08G18/12C08G18/3206C08G18/348C08G18/4045C08G18/4684C08G18/58C08G18/664C08G18/6659
Inventor 许戈文熊潜生霍俊丽戴震何纪慧杨立春
Owner ANHUI ANDA HUATAI NEW MATERIALS CO LTD
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