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Soft solvent-free fire retardant polyurethane synthetic leather and preparation method thereof

A solvent-free, flame-retardant technology, applied in polyurea/polyurethane adhesives, polyurea/polyurethane coatings, adhesive types, etc., can solve poor performance and flame-retardant effects, a large amount of toxic smoke and gas, Harm the safety of personal property and other issues, to achieve the effect of soft hand feeling, improved reactivity, and shortened reaction time

Active Publication Date: 2019-03-08
ANHUI ANLI MATERIAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Solvent-free polyurethane material is an organic polymer material, but polyurethane without flame-retardant treatment is not flame-resistant, will burn and decompose in case of fire, and produce a large amount of toxic smoke and gas, endangering personal and property safety
However, the solvent-based or solvent-free flame-retardant polyurethane synthetic leather currently on the market generally has defects such as hard hand feeling, strong plastic feeling, poor usability and flame-retardant effect, and cannot meet the needs of consumers.

Method used

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  • Soft solvent-free fire retardant polyurethane synthetic leather and preparation method thereof
  • Soft solvent-free fire retardant polyurethane synthetic leather and preparation method thereof
  • Soft solvent-free fire retardant polyurethane synthetic leather and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0074] First, add 10 g of n-propyltrimethoxysilane, 3.8 g of water, and 60 g of absolute ethanol into a three-necked flask, seal the three-necked flask and place it in a constant temperature water bath at 25°C for 25 minutes for hydrolysis; mix 2 kg of mixture (aluminum hydroxide, nitrogen The mass ratio of boron oxide and zinc oxide is 4:2:4) into the high-speed mixing mixer, the speed is set to 500r / min, and the drying temperature is set to 110°C; the n-propyltrimethoxysilane hydrolyzate is divided into three Add batches in the high-speed mixer, each batch interval is 5min, the first batch is 50% of the quality of the hydrolyzed solution, the second batch is 30% of the quality of the hydrolyzed solution, and the third batch is 20% of the quality of the hydrolyzed solution. Under the condition of 1200r / min, high-speed stirring for 20min, discharging and cooling to obtain modified filler.

[0075] Dissolve 0.4 parts of 3238, 0.2 parts of LT-7110, 0.1 parts of 1425, 0.2 parts o...

Embodiment 2

[0081] First, add 15g of n-propyltrimethoxysilane, 5g of water, and 70g of absolute ethanol into a three-necked flask, seal the three-necked flask and place it in a constant temperature water bath at 25°C for 20 minutes for hydrolysis; mix 2kg of mixture (aluminum hydroxide, nitrogen The mass ratio of boron oxide and zinc oxide is 4:2:4) into the high-speed mixing mixer, the rotation speed is set to 700r / min, and the drying temperature is set to 120°C; the n-propyltrimethoxysilane hydrolyzate is divided into three Add batches in the high-speed mixer, each batch interval is 5min, the first batch is 40% of the quality of the hydrolyzed solution, the second batch is 40% of the quality of the hydrolyzed solution, and the third batch is 20% of the quality of the hydrolyzed solution. Under the condition of 1200r / min, stir at high speed for 20min, discharge and cool the modified filler.

[0082] Dissolve together 0.6 parts of 3238, 0.3 parts of LT-7110, 0.2 parts of 1222, 0.3 parts o...

Embodiment 3

[0088]First, add 15g of n-propyltrimethoxysilane, 5g of water, and 60g of absolute ethanol into a three-necked flask, seal the three-necked flask and place it in a constant temperature water bath at 28°C for 15 minutes for hydrolysis; mix 1.5kg of mixture (aluminum hydroxide, The mass ratio of boron nitride and zinc oxide is 6:2:2) into the high-speed mixing mixer, the speed is set at 600r / min, and the drying temperature is set at 115°C; the n-propyltrimethoxysilane hydrolyzate is divided into Three batches are added in the high-speed mixer, each batch is separated by 6 minutes, the first batch is 50% of the quality of the hydrolyzate, the second batch is 40% of the quality of the hydrolyzate, and the third batch is 10% of the quality of the hydrolyzate. After adding, Stir at high speed for 15 minutes under the condition of 1400r / min, discharge and cool the modified filler.

[0089] Dissolve 0.8 parts of 3238, 0.3 parts of LT-7110, 0.4 parts of 1222, 0.4 parts of UV-1425, 0.3 ...

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Abstract

The invention discloses soft solvent-free fire retardant polyurethane synthetic leather and a preparation method thereof. The soft solvent-free fire retardant polyurethane synthetic leather sequentially comprises an anti-stain layer, a surface layer, a middle layer, a bonding layer and base cloth from top to bottom, wherein the bonding layer is prepared from an ingredient A and isocyanate; the molratio of -NCO in the isocyanate to -OH in the ingredient A is 0.85 to 0.93; the ingredient A is prepared from polyhydric alcohol, inhibition type catalysts, fire retardants, filling materials and viscosity modifiers according to the weight parts. The prepared synthetic leather has the advantages of life anti-staining performance, high durability, soft hand feeling, strong skin-friendly effect, excellent fire retardant performance, excellent anti-staining performance, excellent anti-scratching performance and high warping strength; the production process is simple and efficient; environment-friendly effects are achieved; the market requirements can be met.

Description

technical field [0001] The invention relates to a polyurethane synthetic leather, in particular to a soft non-solvent flame-retardant polyurethane synthetic leather and a preparation method thereof. Background technique [0002] With the current increasing environmental protection requirements, the research on environmentally friendly polyurethane synthetic leather is very active. Among them, solvent-free polyurethane synthetic leather has the characteristics of environmental friendliness and excellent performance, and has become a research hotspot in recent years. In addition, compared with water-based polyurethane synthetic leather, solvent-free polyurethane synthetic leather has certain advantages in terms of energy consumption and performance. [0003] Solvent-free polyurethane material is an organic polymer material, but polyurethane without flame-retardant treatment is not flame-resistant, will burn and decompose in case of fire, and produce a large amount of toxic sm...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06N3/14D06N3/00
CPCD06N3/0059D06N3/0061D06N3/0063D06N3/0097D06N3/145D06N3/146D06N3/147D06N2211/28D06N2209/105D06N2209/103D06N2209/0823D06N2209/067D06N2209/1642D06N2209/1685D06N2209/146C08G18/48C08G18/44C08G18/797C09D175/04C09D5/16C08K2003/2227C08K2003/2296C08K2003/385C08K2003/323C08K2003/026D06N3/14D06N3/0065D06N2209/1671C08K3/38C08K3/20C09J7/29C09J7/21C08G18/3203C08K3/22C08K3/28C08L75/12C08L75/14C08L2201/02C08L2205/035C09D175/12C09D175/14C09J175/04
Inventor 姚和平宋远周王燕武孙心如黄万里王义峰姚克俭王锐林王森罗运东陈永志
Owner ANHUI ANLI MATERIAL TECH
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