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Flame-retardant waterborne polyurethane coating

A water-based polyurethane and coating technology, applied in the field of coatings, can solve the problems of limited use of polyurethane coatings and poor flame retardancy, and achieve the effects of reducing heat release rate, reducing total smoke generation, and improving corrosion resistance and heat resistance.

Inactive Publication Date: 2019-05-03
ANHUI KAILIN ADVANCED MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current polyurethane water-based coatings still have the disadvantage of poor flame retardancy, which limits the use of polyurethane coatings.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] A flame-retardant water-based polyurethane coating proposed by the present invention, its raw materials include by weight: 65 parts of diisocyanate, 10 parts of polytetrahydrofuran ether glycol, 30 parts of phosphorus-modified glycol, 2 parts of hydrophilic chain extender, two 5 parts of methyl silicone oil, 3 parts of pentaerythritol, 0.2 parts of dibutyltin dilaurate, 0.5 parts of triethylamine, 1.5 parts of ethylenediamine, 9 parts of gelatin, 1 part of calcium alginate, 2 parts of hollow glass microspheres, cellulose nano Crystal 1.5 parts, graphene oxide 0.1 part, hexamethoxymethylmelamine resin 3 parts, defoamer 0.8 part, water 10 parts.

Embodiment 2

[0016] A flame-retardant waterborne polyurethane coating proposed by the present invention, its raw materials include by weight: 40 parts of diisocyanate, 25 parts of polytetrahydrofuran ether glycol, 15 parts of phosphorus-modified glycol, 5.5 parts of hydrophilic chain extender, two 2 parts of methyl silicone oil, 5.5 parts of pentaerythritol, 0.1 part of dibutyltin dilaurate, 2 parts of triethylamine, 0.1 part of ethylenediamine, 13 parts of gelatin, 0.1 part of calcium alginate, 3.8 parts of hollow glass microspheres, cellulose nano 0.3 parts of crystal, 0.8 parts of graphene oxide, 8 parts of hexamethoxymethylmelamine resin, 0.1 part of defoamer, and 35 parts of water.

Embodiment 3

[0018] A flame-retardant water-based polyurethane coating proposed by the present invention, its raw materials include by weight: 62 parts of diisocyanate, 14 parts of polytetrahydrofuran ether glycol, 27 parts of phosphorus-modified glycol, 2.8 parts of hydrophilic chain extender, two 4 parts of methyl silicone oil, 3.8 parts of pentaerythritol, 0.18 parts of dibutyltin dilaurate, 1 part of triethylamine, 1.3 parts of ethylenediamine, 10 parts of gelatin, 0.8 parts of calcium alginate, 2.6 parts of hollow glass microspheres, cellulose nano Crystal 1.3 parts, graphene oxide 0.2 parts, hexamethoxymethylmelamine resin 6 parts, defoamer 0.7 parts, water 14 parts;

[0019] Wherein, the diisocyanate is a mixture of toluene diisocyanate and 1,5-naphthalene diisocyanate, and the weight ratio of toluene diisocyanate and 1,5-naphthalene diisocyanate is 2:9;

[0020] The phosphorus-modified dihydric alcohol is prepared according to the following process: mix glacial acetic acid and 4-hy...

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PUM

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Abstract

The invention discloses a flame-retardant waterborne polyurethane coating. The flame-retardant waterborne polyurethane coating comprises the following raw materials by weight: 40 to 65 parts of diisocyanate, 10 to 25 parts of polytetrahydrofuran ether glycol, 15 to 30 parts of phosphorus modified diol, 2 to 5.5 parts of a hydrophilic chain extender, 2 to 5 parts of dimethyl silicone oil, 3 to 5.5parts of pentaerythritol, 0.1 to 0.2 part of dibutyltin dilaurate, 0.5 to 2 parts of triethylamine, 0.1 to 1.5 parts of ethylenediamine, 9 to 13 parts of gelatin, 0.1 to 1 part of calcium alginate, 2to 3.8 parts of hollow glass beads, 0.3 to 1.5 parts of cellulose nanocrystals, 0.1 to 0.8 part of graphene oxide, 3 to 8 parts of hexamethoxymethyl melamine resin, 0.1 to 0.8 part of an antifoaming agent and 10 to 35 parts of water. The flame-retardant waterborne polyurethane coating provided by the invention has good flame retardancy and excellent heat resistance.

Description

technical field [0001] The invention relates to the technical field of coatings, in particular to a flame-retardant waterborne polyurethane coating. Background technique [0002] Water-based polyurethane coatings use water as the main medium. They have the characteristics of low VOC content, low or no environmental pollution, and convenient construction. They are one of the main substitutes for solvent-based coatings and have been widely used in vehicle coatings, ships, and wood. , Building coating, anti-corrosion coating, aircraft, plastic, rubber, leather surface coating, etc. However, the current polyurethane water-based coatings still have the disadvantage of poor flame retardancy, which limits the use of polyurethane coatings. Contents of the invention [0003] Based on the technical problems existing in the background technology, the present invention proposes a flame-retardant water-based polyurethane coating, which has good flame retardancy and excellent heat resi...

Claims

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Application Information

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IPC IPC(8): C09D175/08C09D5/18C09D5/08C09D7/65C08G18/38
Inventor 李子荣王和山王厚国王和东殷东楼殷芳荣曹文强张万霞张萍
Owner ANHUI KAILIN ADVANCED MATERIAL CO LTD
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