Preparation method of flame-retarding type polyurethane synthetic leather

A polyurethane and synthetic leather technology, applied in polyurea/polyurethane coatings, coatings, textiles and papermaking, etc., can solve the problems of non-flammability, unsatisfactory, poor strength, etc., to enhance the steric hindrance effect, reduce Surface polarity, effect of lowering surface temperature

Pending Publication Date: 2018-06-29
梅庆波
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide a method for preparing flame-retardant polyurethane synthetic leather in view of the disadvantages that

Method used

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  • Preparation method of flame-retarding type polyurethane synthetic leather

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example 1

[0022]Weigh 16g of sodium hydroxide and 10g of anhydrous sodium carbonate, mix them in a beaker with 100mL of deionized water, and stir for 8 minutes to obtain a mixed alkali solution, and then mix magnesium chloride hexahydrate, trihydrate hexahydrate with a mass ratio of 3:1:6 Aluminum chloride and deionized water were mixed and stirred for 12 minutes to obtain a self-made salt solution, and 55 mL of a self-made salt solution and 30 mL of a mixed alkali solution were measured respectively for later use, and the pH of the self-made salt solution was adjusted to 10 with a mixed alkali solution to obtain a suspension; Put the turbid liquid at room temperature and let it age for 2 hours, remove the filtrate by filtration, take out the filter residue, wash the filter residue 3 times with deionized water, put the washed filter residue in an oven, dry at 85°C for 1 hour, and grind out To obtain self-made magnesium-aluminum hydrotalcite powder, mix self-made magnesium-aluminum hydrot...

example 2

[0024] Weigh 18g of sodium hydroxide and 11g of anhydrous sodium carbonate, mix them in a beaker with 110mL of deionized water and stir for 9 minutes to obtain a mixed alkali solution, and then mix magnesium chloride hexahydrate, trihydrate hexahydrate with a mass ratio of 3:1:6 Aluminum chloride and deionized water were mixed and stirred for 14 minutes to obtain a self-made salt solution, and 60 mL of a self-made salt solution and 37 mL of a mixed alkali solution were measured for subsequent use, and the pH of the self-made salt solution was adjusted to 11 with a mixed alkali solution to obtain a suspension; Put the turbid liquid at room temperature for 3 hours, filter to remove the filtrate, take out the filter residue, wash the filter residue 4 times with deionized water, put the washed filter residue in an oven, dry at 90°C for 1.5h, and grind Discharge to obtain self-made magnesium aluminum hydrotalcite powder, mix self-made magnesium aluminum hydrotalcite powder and sodiu...

example 3

[0026] Weigh 20g of sodium hydroxide and 12g of anhydrous sodium carbonate, mix them in a beaker with 120mL of deionized water and stir for 10min to obtain a mixed alkali solution, and then mix magnesium chloride hexahydrate, trihydrate hexahydrate with a mass ratio of 3:1:6 Aluminum chloride and deionized water were mixed and stirred for 16 minutes to obtain a self-made salt solution, and 65 mL of a self-made salt solution and 45 mL of a mixed alkali solution were measured for subsequent use, and the pH of the self-made salt solution was adjusted to 12 with a mixed alkali solution to obtain a suspension; Put the turbid liquid at room temperature and let it age for 4 hours, remove the filtrate by filtration, take out the filter residue, wash the filter residue 5 times with deionized water, put the washed filter residue in an oven, dry at 95°C for 2 hours, and grind out To obtain self-made magnesium-aluminum hydrotalcite powder, mix self-made magnesium-aluminum hydrotalcite powd...

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Abstract

The invention relates to the technical field of preparation of polyurethane synthetic leather and in particular relates to a preparation method of flame-retarding type polyurethane synthetic leather.The polyurethane synthetic leather with high strength and strong flame-retarding performance is prepared by taking a woven fabric as a substrate, and polyurethane resin, modified self-made magnesium-aluminum hydrotalcite powder and self-made silica sol as a reinforcing agent, and adding with red phosphorus, calcium carbonate and the like; firstly, the self-made magnesium-aluminum hydrotalcite is prepared through a salt-alkali co-precipitation method; the self-made magnesium-aluminum hydrotalcite is subjected to surface modification by utilizing sodium tripolyphosphate; P3O10<5-> and magnesiumions and aluminum ions in the self-made magnesium-aluminum hydrotalcite are subjected to coordinating bonding reaction, so that one layer of protection film is formed; the self-made magnesium-aluminumhydrotalcite is adopted so that the surface temperature of the substrate is reduced and a flame-retarding effect is realized; the red phosphorus can react with an ester group in polyurethane at hightemperature, so that thermal cracking and volatilization of a polymer is reduced and oxygen and heat are isolated; furthermore, the strength and the flame-retarding performance of the polyurethane synthetic leather is improved, and the polyurethane synthetic leather has a wide application prospect.

Description

technical field [0001] The invention relates to the technical field of polyurethane synthetic leather preparation, in particular to a preparation method of flame-retardant polyurethane synthetic leather. Background technique [0002] With the continuous development of the economy, people's living standards and consumption levels are increasing day by day, and people have higher and higher requirements for the quality and functions of the products used in life. Although leather products have the advantages of comfortable hand feeling, good elasticity, strong sensuality, and good durability. However, due to the limited natural leather resources, it is far from meeting people's consumption needs, so polyurethane synthetic leather has emerged as the times require. [0003] Polyurethane synthetic leather belongs to the category of polyurethane elastomers. It is mainly made of polyurethane solution and non-woven fabrics, raised fabrics, woven fabrics and other cloth bases for dry...

Claims

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Application Information

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IPC IPC(8): C09D175/04C09D7/62C09D5/18D06N3/14D06N3/00
CPCC09D175/04D06N3/0061D06N3/0063D06N3/14C09D5/18D06N2211/28D06N2209/067D06N2209/103C08K2003/026C08L83/04C08K13/06C08K9/02C08K3/26C08K3/36C08K3/02
Inventor 梅庆波杨明忠张建初
Owner 梅庆波
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