Water-based environment-friendly high-flame-retardant solvent-free embossed grain-absorbed synthetic leather and preparation method thereof

A solvent-free, high flame-retardant technology, applied in the field of water-based polyurethane synthetic leather, can solve problems such as weak three-dimensional effect, limited number of uses, and inability to meet the flame-retardant effect, and achieve good toughness and physical properties, and clear and full texture.

Pending Publication Date: 2022-04-22
浙江昶丰新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The texture of traditional synthetic leather is mainly produced by transfer veneer and embossing method of release paper. Expensive and the number of times of use is limited, which will greatly increase the production cost of synthetic leather, so the embossing method is becoming more and more popular in the market
However, the existing embossed products are all made of bass veneer and then embossed after high temperature softening. The synthetic leather produced by this process generally has insufficient physical properties such as peel strength, hydrolysis resistance, tear strength, and cannot meet the requirements for flame retardancy. Products with higher requirements

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Preparation of solvent-free component A: Mix polyether polyol WANOL®F3156 and polyether polyol WANOL®F2030 at a ratio of 7:3, add 5% small molecule chain extender, 0.8% foaming agent, 2% foam stabilizer, 0.07% catalyst, 10% magnesium hydroxide, 20% phosphorus-based flame retardant NP1060, added to the batching barrel, and fully mixed evenly under vacuum defoaming conditions; solvent-free B component is isocyanate prepolymer; solvent-free A Components and solvent-free component B are added to the AB storage tank of the dry-line solvent-free pouring machine, and the flow rate and stirring speed and the proportion parameters of component A and component B are set;

[0032] Mix aromatic polyether resin JF-PDY-841A and aliphatic polyether resin Tekspro®5215 at 8:2, add 3% color paste, 1% wetting and leveling agent SY-8009A, 0.5% nitrogen Propidium cross-linking agent ST100, 0.5% thickener VesmodyTM506, and fully mixed evenly, the viscosity of the obtained prepared resin is 4...

example 2

[0036] Preparation of solvent-free component A: Mix polyether polyol WANOL®F3156 and polyether polyol WANOL®F2030 at a ratio of 7:3, add 5% small molecule chain extender, 0.8% foaming agent, 2% foam stabilizer, 0.07% catalyst, 30% phosphorus-based flame retardant NP1060, added to the batching tank, fully mixed under vacuum defoaming conditions; B component is isocyanate prepolymer; solvent-free A component and solvent-free B component Add it to the AB storage tank of the dry line solvent-free pouring machine, set the flow rate and stirring speed, and the proportion parameters of component A and component B;

[0037] Mix aromatic polyether resin JF-PDY-841A and aliphatic polyether resin Tekspro®5215 at 8:2, add 3% color paste, 1% wetting and leveling agent SY-8009A, 0.5% nitrogen Propidium cross-linking agent ST100, 0.5% thickener VesmodyTM506, and fully mixed evenly, the viscosity of the prepared resin obtained is 4500cps. The prepared surface layer resin is coated on plain p...

example 3

[0041] Preparation of solvent-free component A: Mix polyether polyol WANOL®F3156 and polyether polyol WANOL®F2030 at a ratio of 6:4, add 5% small molecule chain extender, 0.8% foaming agent, 2% foam stabilizer, Add 0.07% catalyst, 10% magnesium hydroxide, and 20% phosphorus-based flame retardant NP1060 into the batching tank, and mix well under vacuum defoaming conditions; solvent-free component B is isocyanate prepolymer. Add the solvent-free component A and the solvent-free component B into the AB storage tank of the dry-line solvent-free pouring machine, set the flow rate and stirring speed, and the proportion parameters of component A and component B.

[0042] Mix aromatic polyether resin JF-PDY-841A and aliphatic polyether resin Tekspro®5215 at 8:2, add 3% color paste, 1% wetting and leveling agent SY-8009A, 0.5% nitrogen Propidium cross-linking agent ST100, 0.5% thickener VesmodyTM506, and fully mixed evenly, the viscosity of the obtained prepared resin is 4500cps; min ...

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PUM

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Abstract

The invention relates to water-based environment-friendly high-flame-retardant solvent-free embossed grain-absorbing synthetic leather which comprises a surface layer, a foaming layer and base cloth, the foaming layer comprises a solvent-free component A, a solvent-free component B and a flame retardant, the solvent-free component A comprises polyether polyol, a small-molecule chain extender, a foaming agent, a foam stabilizer and a catalyst, the solvent-free component B comprises an isocyanate prepolymer, and the flame retardant is a flame retardant. The polyether polyol used in the invention is prepared by mixing glycerol-based polyether polyol with the molecular weight of 3000-4000 and propylene glycol-based polyether polyol with the molecular weight of 1000-2000 according to a certain ratio; the glycerol-based polyether polyol with the molecular weight of 3000-4000 forms network crosslinking in the chain extension reaction of the solvent-free component A and the solvent-free component B to provide better toughness and physical properties for a solvent-free layer, and the propylene glycol-based polyether polyol with the molecular weight of 1000-2000 enables the solvent-free component A and the solvent-free component B to be further subjected to chain extension, so that more macromolecular straight chains exist; and during embossing, softening can be achieved more easily through high temperature, and embossing is facilitated.

Description

technical field [0001] The invention relates to the technical field of water-based polyurethane synthetic leather, in particular to a water-based, environment-friendly, highly flame-retardant, solvent-free embossed and grain-absorbing synthetic leather and a preparation method thereof. Background technique [0002] With the gradual improvement of the public's awareness of environmental protection, water-based polyurethane resin has gradually replaced traditional solvent-based polyurethane because it does not contain various toxic and harmful solvents, and its non-flammable and hydrolysis-resistant properties are excellent. Revolutionary technology. [0003] However, because water-based polyurethane resin uses water as a solvent, it takes a lot of energy to dry off excess water in the production process of synthetic leather, resulting in a significant increase in production costs; while solvent-free polyurethane synthetic leather does not need to add solvents in the productio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/28B32B27/08B32B27/12B32B27/18B32B27/20B32B27/22B32B38/16B32B5/02B32B7/027B32B27/40B29C41/30B29C59/02C08G18/32C08G18/48C08G18/66C08K3/22C08K5/3492C08K5/5313C08G101/00
CPCB32B27/285B32B27/065B32B5/18B32B27/18B32B27/20B32B27/22B32B5/02B32B5/245B32B27/40B32B7/027B32B38/164C08G18/4804C08G18/3206C08G18/6674C08G18/6677C08K3/22C08K5/5313C08K5/34928B29C41/30B29C59/02C08G2101/00C08G2110/0083C08K2003/2224B32B2266/0214B32B2307/3065
Inventor 邵晨旭王新垚
Owner 浙江昶丰新材料有限公司
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