Method for manufacturing environment-friendly semi-polyurethane leather

A polyurethane leather, environment-friendly technology, applied in the direction of chemical instruments and methods, textiles and papermaking, layered products, etc., can solve the problems that cannot meet the requirements of eco-friendly leather making, eliminate fire hazards, and save organic solvent resources , The effect of eliminating environmental pollution

Inactive Publication Date: 2012-05-02
SICHUAN UNIV
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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

[0042] The manufacture of embodiment 1 half PU garment leather

[0043] (1). Preparation of water-based polyurethane surface layer slurry, polyvinyl chloride foam layer slurry, water-based adhesive and water-based surface treatment agent

[0044] (a) Preparation of water-based polyurethane surface layer slurry

[0045] 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;

[0046] (b) Preparation of PVC foam layer slurry

[0047] Mix 20 parts of dioctyl phthalate, 100 parts of polyvinyl chloride powder, 5 parts of toner, 15 parts of azodicarbonamide (AC) foaming ag...

Embodiment 2

[0064] The manufacture of embodiment 2 half PU sofa leather

[0065] (1). Preparation of water-based polyurethane surface layer slurry, polyvinyl chloride foam layer slurry, water-based adhesive and water-based surface treatment agent

[0066] (a) Preparation of water-based polyurethane surface layer slurry

[0067] Use 100 parts of polyurethane for the water-based surface layer with a modulus of 50MPa, 20 parts of water-based brown color paste, 0.5 parts of water-based leveling agent Silok Leveling8266, 0.3 parts of water-based defoamer Foamex805, and 0.5 parts of water-based thickener COSIE FT-823D , Mix 5.0 parts of water-based epoxy resin cross-linking agent evenly, control the viscosity to 3000mPa.s (temperature 25°C, the same below), filter for later use;

[0068] (b) Preparation of PVC foam layer slurry

[0069] Mix 10 parts of dioctyl phthalate, 100 parts of polyvinyl chloride powder, 2 parts of toner, 5 parts of azodicarbonamide (AC) foaming agent, and 2 parts of st...

Embodiment 3

[0086] The manufacture of embodiment 3 half PU bag leather

[0087] (1). Preparation of water-based polyurethane surface layer slurry, polyvinyl chloride foam layer slurry, water-based adhesive and water-based surface treatment agent

[0088] (a) Preparation of water-based polyurethane surface layer slurry

[0089] Use 100 parts of polyurethane for the water-based surface layer with a modulus of 50MPa, 30 parts of water-based red color paste, 0.3 parts of water-based leveling agent Silok Leveling8232, 0.3 parts of water-based defoamer Foamex825, and 0.3 parts of water-based thickener COSIE FT-880 3. Mix evenly with 3.0 parts of water-based carbodiimide cross-linking agent, control the viscosity to 2800mPa.s (temperature 25°C, the same below), and filter for later use;

[0090] (b) Preparation of PVC foam layer slurry

[0091] Mix 15 parts of dioctyl phthalate, 100 parts of polyvinyl chloride powder, 3 parts of toner, 10 parts of azodicarbonamide (AC) foaming agent, and 3 par...

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Abstract

The invention discloses a method for manufacturing environment-friendly semi-polyurethane leather. The method is characterized in that: polyvinyl chloride (PVC) is taken as a foam layer, water-base cement is taken as an adhesive layer, and the environment-friendly semi-polyurethane (PU) leather is prepared by a transfer coating method. Water-borne polyurethane replaces the traditional solvent-type polyurethane to serve as a surface layer, a surface treatment layer and an adhesive layer of the semi-polyurethane leather, organic pollution is eliminated from the source, organic solvent resourcesare saved, potential safety hazards are eliminated, and the working environment of workers is improved. The content of volatile organic compounds (VOC) of the finished leather is less than 5mg/kg (ofleather), the finished leather is eco-friendly and meets the requirement of ecological semi-PU leather, and other performance of the finished leather is equal to or superior to that of a solvent-typeproduct.

Description

technical field [0001] The invention relates to a method for manufacturing environment-friendly semi-polyurethane (PU) leather, which belongs to the field of semi-artificial leather and synthetic leather manufacturing. technical background [0002] 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 bottom. It not only has the good feel, appearance, breathability, moisture permeability and easy surface treatment of PU leather, but also has the durability and low price of PVC leather. Advantages, strong market competitiveness, has been widely used in the production of luggage, clothing, footwear, furniture, sporting goods and other fields, accounting for 30-40% of the production of artificial leather. [0003] However,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06N3/08B32B27/12B32B27/18B32B27/30B32B27/40B32B7/12
Inventor 范浩军王姗姗陈意杨坡陈新刘世勇
Owner SICHUAN UNIV
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