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Method for manufacturing foamed synthetic leather based on water-based resin and TPU (Thermoplastic Polyurethane) resin

A water-based resin and manufacturing method technology, applied in the field of synthetic leather manufacturing, can solve problems such as the inability to meet the requirements of ecological synthetic leather, and achieve the effects of improving the ecological level of products and international market competitiveness, eliminating environmental pollution, and eliminating fire hazards.

Active Publication Date: 2014-04-02
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the traditional manufacturing technology of foamed synthetic leather based on solvent resin cannot meet the requirements of ecological synthetic leather

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] The manufacture of embodiment 1 floor leather

[0044] (1) Preparation of waterborne polyurethane surface layer resin (parts by weight)

[0045] Use 100 parts of polyurethane for the wear-resistant and scratch-resistant water-based surface layer, 20 parts of water-based brown color paste, 0.2 parts of water-based leveling agent, 0.1 part of water-based defoamer, 0.3 parts of water-based thickener, polycarbodiimide cross-linked Mix 2 parts of the agent evenly, prepare the surface layer resin with a viscosity of 2500mPa.s (temperature 25°C, the same below), and filter for later use;

[0046] (2) Preparation of TPU foam layer resin (parts by weight)

[0047] The formula of the TPU foam layer resin is the same as the conventional one, that is, TPU resin with a relative molecular mass of 110,000 and a melting temperature of 125°C, brown toner, foaming agent, foam stabilizer, heat stabilizer and other additives are mixed in a certain proportion, heated and melted ,spare;

...

Embodiment 2

[0065] Embodiment 2 The manufacture of sofa leather

[0066] (1) Preparation of waterborne polyurethane surface layer resin (parts by weight)

[0067] Use 100 parts of polyurethane for the wear-resistant and scratch-resistant water-based surface layer, 20 parts of water-based beige color paste, 0.5 parts of water-based leveling agent, 0.3 parts of water-based defoamer, 0.5 parts of water-based thickener, and water-based epoxy resin crosslinking agent Mix evenly according to 5.0 parts, control the viscosity to about 3000 mPa.s (temperature 25°C, the same below), filter for later use;

[0068] (2) Preparation of TPU foam layer resin (parts by weight)

[0069] The formula of the TPU foam layer resin is the same as the conventional one, that is, TPU resin with a relative molecular weight of 90,000 and a melting temperature of about 120°C, beige toner, foaming agent, foam stabilizer, heat stabilizer and other additives are mixed in a certain proportion, heated molten, spare;

...

Embodiment 3

[0087] Embodiment 3 Manufacture of luggage leather

[0088] (1) Preparation of waterborne polyurethane surface layer resin (parts by weight)

[0089] Use 100 parts of polyurethane for the water-based surface layer with excellent wear resistance and scratch resistance, 30 parts of water-based red color paste, 0.3 parts of water-based leveling agent, 0.3 parts of water-based defoamer, 0.3 parts of water-based thickener, and water-based carbodiimide. Mix 3.0 parts of the joint agent evenly, control the viscosity to about 2800 mPa.s (temperature 25°C, the same below), filter for later use;

[0090] (2) Preparation of TPU foam layer resin (parts by weight)

[0091] The formula of the TPU foam layer resin is the same as the conventional one, that is, TPU resin with a relative molecular mass of 100,000 and a melting temperature of 130°C, red toner, foaming agent, foam stabilizer, heat stabilizer and other additives are mixed in a certain proportion, heated and melted ,spare;

[...

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Abstract

The invention discloses a method for manufacturing foamed synthetic leather based on water-based resin and TPU (Thermoplastic Polyurethane) resin. The manufacturing method comprises the following steps: using water-based polyurethane as a facial layer and a surface treatment layer, using TPU resin as a foaming layer, using a water-based cement as a bonding layer, and obtaining the environment-friendly foamed synthetic leather through a coating transfer process. The method has the advantages that organic pollutants are thoroughly eliminated from the source, organic solvent resources are saved, potential safety hazard is eliminated, and the work environment of workers is improved. The VOC (volatile organic compound) content of a finished leather product is lower than 5 mg / kg. The foamed synthetic leather is ecological environmental friendly and meets European ecological foamed synthetic leather requirements, and the other properties of the leather can also reach or superior to the properties of solvent products.

Description

Technical field [0001] The present invention belongs to the field of synthetic leather manufacturing. It specifically refers to an environmentally friendly foam synthetic leather manufacturing method, especially the foam synthetic leather manufacturing method based on water -based resin and TPU resin. Background technique [0002] my country is the world's human -made revolution, synthetic revolution production and consumer powers, and its production capacity and output account for 73%and 69%of the world, respectively.However, the synthetic leather industry also faces the severe challenge of environmental pollution.The exhaust gas pollutants on the synthetic production line mainly come from the disorderly discharge of the solvent -based surface agent, facial resin, foam resin, and organic solvents in bonding glue., Toluene, ethyl acetate, acetate, butthonone, and aldehydes.According to estimates, each foam synthetic leather production line discharges 10.2 tons of DMF each year, 5...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06N3/14B32B37/02B32B38/18
Inventor 范浩军陈意宁继鑫刘世勇王伟廖学品
Owner SICHUAN UNIV
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