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Environmentally-friendly polyurethane leather, preparation method and product thereof

A technology of polyurethane leather and water-based polyurethane, applied in the direction of polyurea/polyurethane adhesive, chemical instruments and methods, layered products, etc. The effect of eliminating environmental pollution and saving organic solvent resources

Active Publication Date: 2015-02-04
雄进塑料制品(东莞)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the traditional solvent resin-based semi-PU leather manufacturing method is unable to meet the requirements of eco-friendly tanning

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] In a typical embodiment of the present invention, a kind of environment-friendly polyurethane leather comprises microfiber non-woven fabric, the bottom layer covered on the non-woven fabric, and the surface layer covered on the bottom layer, wherein, the surface layer includes at least 4 layers A coating formed by squeegeeing of slurry, each slurry includes: water-based polyurethane, water, and water-based additives.

[0038] Preferably, in the above-mentioned ultrafiber environment-friendly water-based synthetic leather, the surface layer includes 4 layers of coatings, which are respectively: an adhesive layer, a first middle layer, a second middle layer and a surface layer. The adhesive layer is covered on the bottom layer, and the slurry of the adhesive layer includes the following raw materials in parts by weight: 80-100 parts of the first water-based polyurethane resin, 10-20 parts of water, 0-5 parts of water-based additives; the first intermediate layer Covering ...

Embodiment 2

[0047] Preparation of water-based polyurethane surface layer slurry

[0048] Use 100 parts of polyurethane for the water-based surface layer with a modulus of 30, 20 parts of water-based black color paste, 0.2 parts of water-based leveling agent Silok Leveling8255, 0.1 part of water-based defoamer Foamex800, and 0.3 parts of water-based thickener COSIE FT-835 2. Mix the polycarbodiimide cross-linking agent evenly in 2 parts, make a surface layer slurry with a viscosity of 2500mPa.s (temperature 25°C, the same below), and filter for later use;

[0049] Preparation of PVC foam layer slurry

[0050] Mix 20 parts of dioctyl phthalate, 100 parts of polyvinyl chloride powder, 5 parts of toner, 15 parts of azodicarbonamide (AC) foaming agent, and 4 parts of stearate to form a foam layer slurry;

[0051] Preparation of water-based adhesive

[0052] Mix 100 parts of water-based polyurethane adhesive, 0.5 part of water-based thickener COSIE FT-835, and 0.2 part of leveling agent Silo...

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Abstract

The invention discloses environmentally-friendly polyurethane leather. The environmentally-friendly polyurethane leather comprises a microfiber non-woven fabric, a bottom layer covering on the non-woven fabric, as well as a surface layer, a PVC (Polyvinyl Chloride) foaming layer and a water-based adhesive layer which cover the bottom layer. After a polyurethane leather semi-finished product is foamed and embossed, the surface treatment is carried out by adopting a three-edition surface dressing machine, the sizing amount of a water-based surface dressing agent is 40-60g / m<2>, the drying temperature and time are respectively 140-150 DEG C and 60-90 seconds, and the finished product is obtained after a leather blank subjected to surface dressing is subjected to twisting, drying and measuring. The surface layer comprises four layers of coatings, namely an adhesive layer, a first intermediate layer, a second intermediate layer and a surface layer respectively. The environmentally-friendly polyurethane leather is widely applied on shoes, sofa, garments, suitcases, furniture and interior decoration.

Description

technical field [0001] The invention relates to the field of artificial leather, in particular to an environment-friendly polyurethane leather, a preparation method and a product thereof. Background technique [0002] With the development of society and the improvement of human living standards, the requirements for consumer goods are getting higher and higher, and natural leather is one of the hot consumer goods. Due to the constraints of natural conditions and the increasing awareness of animal protection in countries around the world, natural leather is decreasing year by year. In order to replace this natural leather, synthetic leather was invented. [0003] my country is the world's largest producer and consumer of polyvinyl chloride (PVC) artificial leather, and its production capacity and output account for 73% and 69% of the world's total respectively. Semi-PU leather is an upgraded product of PVC leather. It is characterized by PU on the surface and PVC on the bott...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06N3/08D06N3/00B32B27/08B32B27/18B32B27/30B32B27/40B32B7/12B32B38/00C09J175/04C08L75/04C08L27/06C08K5/12C08K5/098C08J9/10D06M15/564
Inventor 杨小波
Owner 雄进塑料制品(东莞)有限公司