A kind of preparation method of water-based/solvent-free compound environment-friendly polyurethane synthetic leather

A solvent-free, synthetic leather technology, applied in the field of synthetic leather manufacturing, can solve problems such as being unfavorable to health and environmental protection, and achieve the effects of strong skin and skin feel, advanced preparation technology, and zero-solvent use, health and environmental protection

Active Publication Date: 2018-08-28
ANHUI ANLI MATERIAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Polyurethane synthetic leather is an ideal substitute material for genuine leather, but its disadvantage is that it must use a strong polar organic solvent DMF as a solvent, which is not conducive to the health and environmental protection of the production process and the consumption process of finished products.

Method used

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  • A kind of preparation method of water-based/solvent-free compound environment-friendly polyurethane synthetic leather
  • A kind of preparation method of water-based/solvent-free compound environment-friendly polyurethane synthetic leather
  • A kind of preparation method of water-based/solvent-free compound environment-friendly polyurethane synthetic leather

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] The synthetic leather of this embodiment includes a water-based surface layer and a solvent-free middle layer. Foaming polyurethane resin, the two-component material is a polyether type combination A material and a polyether type B material prepolymer.

[0051] In this embodiment, the preparation method of water-based / solvent-free composite environmentally friendly polyurethane synthetic leather specifically includes the following steps:

[0052] (1) Preparation of the water-based surface layer: Coat the water-based surface layer slurry on the release paper, control the coating thickness of the water-based surface layer slurry to 0.2mm, dry at 120°C for 3 minutes, and then solidify and form to obtain the water-based surface layer;

[0053] The water-based surface layer is a thermosetting polyether water-based polyurethane resin;

[0054] The proportioning of each raw material by mass parts in the water-based surface layer slurry is:

[0055]

[0056] (2) Preparation ...

Embodiment 2

[0062] The synthetic leather of this embodiment includes a water-based surface layer and a solvent-free middle layer. Foaming polyurethane resin, the two-component material is a polyether type combination A material and a polyether type B material prepolymer.

[0063] In this embodiment, the preparation method of water-based / solvent-free composite environmentally friendly polyurethane synthetic leather specifically includes the following steps:

[0064] (1) Preparation of the water-based surface layer: Coat the water-based surface layer slurry on the release paper, control the coating thickness of the water-based surface layer slurry to 0.4mm, dry at 130°C for 3 minutes, and then solidify and form to obtain the water-based surface layer;

[0065] The water-based surface layer is a thermosetting polyether water-based polyurethane resin;

[0066] The proportioning of each raw material by mass parts in the water-based surface layer slurry is:

[0067]

[0068] (2) Preparatio...

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Abstract

The present invention discloses a preparation method of aqueous / solvent-free composite environmentally friendly polyurethane synthetic leather, the synthetic leather comprises an aqueous elastomer surface layer and a solvent-free foaming intermediate layer, the aqueous elastomer surface layer resin is thermosetting polyether aqueous polyurethane resin, the solvent-free foaming intermediate layer is thermosetting two-component polyether solvent-free foaming polyurethane resin, and the two-component material is polyether combination A material and polyether B material prepolymer. The preparation process does not use any organic solvent, achieves the synthetic leather production and processing, finished product zero solvent use and health and environmental friendliness; at the same time, the advantages of the aqueous polyurethane resin and the solvent-free polyurethane resin are combined, and the obtained synthetic leather products has strong pattern stereoscopic impression, soft hand feeling, superior hydrolysis resistance and other physical properties, and skin and leather feeling equivalent to natural dermis.

Description

1. Technical field [0001] The invention relates to a method for manufacturing polyurethane synthetic leather, in particular to a method for preparing water-based / solvent-free composite environmentally friendly polyurethane synthetic leather, which belongs to the field of synthetic leather manufacturing. 2. Background technology [0002] With the development of the national economy and the improvement of people's living standards, consumers not only have high requirements for the quality of clothing, shoes and hats, sofa furniture, and automotive interior products, but also have very high requirements for the environmental performance of materials. At present, although genuine leather products have the advantages of comfortable feel, good elasticity, and good durability, due to limited natural leather resources, high-performance, high-quality, and high-value-added products made of top-grain leather are in short supply, and prices continue to rise. Become synonymous with luxur...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06N3/14
CPCD06N3/0043D06N3/0063D06N3/0065D06N3/0088D06N3/0097D06N3/145D06N2209/1607D06N2211/10D06N2211/106D06N2211/20D06N2211/28
Inventor 王锐林姚和平王海峰孔为青宋远周李晓飞吴文黄万里姚克俭陈永志王燕武笪丽红武春余苏星刘兵罗运东高兵范培宏王德松
Owner ANHUI ANLI MATERIAL TECH
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