Graphene-modified app/perm/el water-based polyurethane flame-retardant coating and preparation method thereof

A water-based polyurethane and graphene modification technology, used in polyurea/polyurethane coatings, fire-retardant coatings, coatings, etc., can solve the problems of poor high temperature oxidation resistance, large residual amount, low carbon residual rate, etc., and achieve flame retardant performance. Good, large residue, low carbon residue rate

Inactive Publication Date: 2019-06-07
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to overcome the disadvantages of low carbon residue rate and poor high temperature oxidation resistance of the intumescent flame retardant existing in the prior art, and provide a kind of thermal stability, good flame retardant performance, low carbon residue rate, small deformation and 700 ℃The residual amount in the air is large, and the graphene modified APP / PERM / EL waterborne polyurethane flame retardant coating can be automatically extinguished within 5s

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A preparation method of graphene modified APP / PERM / EL waterborne polyurethane flame retardant coating, comprising the steps:

[0022] (1) polycarbonate diol with a molecular weight of 1000, polytetrahydrofuran ether diol with a molecular weight of 1000, polyether diol with a molecular weight of 1000, isophorone diisocyanate, dimethylol propionic acid, 1, 6-hexanediol, trimethylolpropane and dibutyltin dilaurate are vacuum-dried and dehydrated; N-methyl-2-pyrrolidone, acetone and triethylamine are dried separately;

[0023] (2) According to the number of parts by mass, 3 parts of polycarbonate diol with a molecular weight of 1000, 0.8 parts of polytetrahydrofuran ether diol with a molecular weight of 1000, and 1 part of polyether diol with a molecular weight of 1000 after the treatment of step (1) Mix evenly with 9 parts of isophorone diisocyanate, stir and react at 80°C for 3 hours, cool down to 40°C, add 0.8 parts of dimethylol propionic acid, 2 parts of 1,6-hexanediol...

Embodiment 2

[0029] A preparation method of graphene modified APP / PERM / EL waterborne polyurethane flame retardant coating, comprising the steps:

[0030] (1) polycarbonate diol with a molecular weight of 2000, polytetrahydrofuran ether diol with a molecular weight of 2000, polyether diol with a molecular weight of 2000, isophorone diisocyanate, dimethylol propionic acid, 1, 6-hexanediol, trimethylolpropane and dibutyltin dilaurate are vacuum-dried and dehydrated; N-methyl-2-pyrrolidone, acetone and triethylamine are dried separately;

[0031] (2) In parts by mass, 4 parts of molecular weight after the treatment of step (1) are 2000 polycarbonate diols, 1.2 parts of molecular weights are polytetrahydrofuran ether diols of 2000, 1.5 parts of molecular weights are 2000 polyether diols Mix evenly with 10 parts of isophorone diisocyanate, stir and react at 100°C for 1.5h, cool down to 50°C, add 1 part of dimethylolpropionic acid, 2.5 parts of 1,6-hexanediol, 0.6 parts of tris Methylol propane,...

Embodiment 3

[0037] A preparation method of graphene modified APP / PERM / EL waterborne polyurethane flame retardant coating, comprising the steps:

[0038] (1) polycarbonate diol with a molecular weight of 1000, polytetrahydrofuran ether diol with a molecular weight of 2000, polyether diol with a molecular weight of 2000, isophorone diisocyanate, dimethylol propionic acid, 1, 6-hexanediol, trimethylolpropane and dibutyltin dilaurate are vacuum-dried and dehydrated; N-methyl-2-pyrrolidone, acetone and triethylamine are dried separately;

[0039](2) According to the number of parts by mass, 3 parts of polycarbonate diol with a molecular weight of 1000, 1 part of polytetrahydrofuran ether diol with a molecular weight of 2000, and 1 part of polyether diol with a molecular weight of 2000 after the treatment of step (1) Mix well with 10 parts of isophorone diisocyanate, stir and react at 90°C for 2.5h, cool down to 45°C, add 0.9 parts of dimethylolpropionic acid, 2 parts of 1,6-hexanediol, 0.5 par...

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PUM

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Abstract

The invention discloses graphene-modified APP / PERM / EL (ammonium polyphosphate / pentaerythritol / melamine) waterborne polyurethane flame-retardant coating and a preparation method thereof; the preparation method comprises: (1) drying materials; (2) mixing dried polycarbonate diol, polytetramethylene ether glycol, polyether diol and isophorone diisocyanate, reacting, adding dimethylolpropionic acid, 1,6-hexanediol, trimethylolpropane, dibutyltin dilaurate, N-methyl-2-pyrrolidone and acetone, adding triethylamine, and dispersing to obtain waterborne polyurethane emulsion; (3) mixing ammonium polyphosphate, pentaerythritol and melamine, adding the mixture to graphene water dispersion, and centrifuging to obtain a modified inherent flame retardant system; (4) adding the modified inherent flame retardant system, deionized water and absolute ethyl alcohol into the waterborne polyurethane emulsion, centrifuging, and removing a solvent to obtain the coating. A coating layer of the coating of the invention has good thermal stability and good flame retardancy, and can remain the mass of > / =90% and original shape at 700 DEG C in air; flame is automatically distinguished in 5 s after the coating is removed a flame source.

Description

technical field [0001] The invention relates to a graphene-modified APP / PERM / EL water-based polyurethane flame-retardant coating and a preparation method thereof, belonging to the field of new functional materials. Background technique [0002] Nowadays, waterborne polyurethane (WPU), as a coating polymer material with excellent performance, has been widely used in wood, leather, fiber, textile, plastic products and other fields. For example, water-based polyurethane coatings are widely used in the coating and finishing of textiles as a new type of environmentally friendly coating, but textiles and water-based polyurethanes as coating finishing agents are flammable materials, which are often easy to burn during use and are harmful to people's lives. Property safety caused serious damage. It is particularly important to increase the added value of textiles and meet the needs of fabric flame retardancy. [0003] Fire retardant coatings are also called flame retardant coating...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D175/04C09D5/18C08G18/75C08G18/66C08G18/48C08G18/44C08G18/34C08G18/32
CPCC08G18/4018C08G18/44C08G18/4808C08G18/4825C08G18/4854C08G18/6625C08G18/6644C08G18/755C08K3/04C08K5/053C08K5/34922C08K2003/323C09D5/185C09D175/04
Inventor 乔建军赵兴旺李韡许然然财音青格乐赵秀丽吴昊
Owner TIANJIN UNIV
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