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Preparation method of environmentally-friendly powder wax synthetic leather

A synthetic leather and environment-friendly technology, applied in the field of synthetic leather, can solve the problems of residual toxic and harmful substances, unfavorable environmental protection and human health, and achieve the effects of smooth surface, time saving and good adsorption capacity

Inactive Publication Date: 2015-12-23
ZHEJIANG JINSHANG SYNTHETIC LEATHER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the problem of residual toxic and harmful substances in the existing synthetic leather products, which is not conducive to environmental protection and human health, and to provide a synthetic leather that is not only environmentally friendly but also can endow the surface of synthetic leather with smooth, wear-resistant, scratch-resistant and other properties. Synthetic leather preparation method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] A preparation method of environment-friendly powder wax synthetic leather, comprising the following steps:

[0035] (1) wet bass preparation

[0036] a. 10 parts by weight of dimethylformamide and 2 parts by weight of color paste (commercially available) were mixed and stirred for 30 min, then filtered;

[0037] b. 40 parts by weight of dimethylformamide, 5 parts by weight of modified bentonite and 20 parts by weight of lignocellulose were mixed and stirred for 30 minutes, and then fully swelled for 20 minutes;

[0038] c. Add the mixture filtered in step a to the swollen mixture in step b, stir evenly, then add 50 parts by weight of polyurethane resin, stir for 30 minutes, and defoam for 20 minutes;

[0039] d. Mix the degassed mixture in step c at 110g / m 2 The amount of material applied is scraped on the base cloth, and then immersed in a dimethylformamide solution with a mass fraction of 15% to solidify for 8 minutes at a solidification temperature of 30°C, and the...

Embodiment 2

[0051] A preparation method of environment-friendly powder wax synthetic leather, comprising the following steps:

[0052] (1) wet bass preparation

[0053] a. 12 parts by weight of dimethylformamide and 4 parts by weight of color paste were mixed and stirred for 35 minutes, and then filtered;

[0054] b. 45 parts by weight of dimethylformamide, 10 parts by weight of modified bentonite and 25 parts by weight of lignocellulose were mixed and stirred for 35 minutes, and then fully swelled for 25 minutes;

[0055] c. Add the mixture filtered in step a to the swollen mixture in step b, stir evenly, then add 55 parts by weight of polyurethane resin, stir for 35 minutes, and defoam for 25 minutes;

[0056] d. Mix the degassed mixture in step c at 125g / m 2 The amount of material applied is scraped on the base cloth, and then immersed in a dimethylformamide solution with a mass fraction of 16% to solidify for 9 minutes at a solidification temperature of 35°C, and then washed with wa...

Embodiment 3

[0068] A preparation method of environment-friendly powder wax synthetic leather, comprising the following steps:

[0069] (1) wet bass preparation

[0070] a. 15 parts by weight of dimethylformamide and 5 parts by weight of color paste were mixed and stirred for 40 minutes, and then filtered;

[0071] b. 50 parts by weight of dimethylformamide, 20 parts by weight of modified bentonite and 30 parts by weight of lignocellulose were mixed and stirred for 40 minutes, and then fully swelled for 30 minutes;

[0072] c. Add the mixture filtered in step a to the swollen mixture in step b, stir evenly, then add 60 parts by weight of polyurethane resin, stir for 40 minutes, and defoam for 20 to 30 minutes;

[0073] d. Mix the degassed mixture in step c at 125g / m 2 The amount of material applied is scraped on the base cloth, and then immersed in a dimethylformamide solution with a mass fraction of 17% to solidify for 10 minutes at a solidification temperature of 45°C, and then washed ...

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PUM

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Abstract

The invention discloses a preparation method of environmentally-friendly powder wax synthetic leather and aims to overcome the problem that existing synthetic leather products contain residual toxic and hazardous compounds and are not beneficial to environmental protection and human health. The preparation method of the environmentally-friendly powder wax synthetic leather comprises four steps, namely wet-process base preparation, dry-process batching, dry-process overlaying and postprocessing. According to the invention, benzyltrimethyl ammonium chloride is used to modify bentonite, and the modified bentonite is used as a filler for the wet-process base preparation. The modified bentonite can effectively adsorb harmful substances in a synthetic leather product. The synthetic leather prepared by the above method is safer and more environmentally-friendly. Meanwhile, micronized polyethylene waxes are also used in postprocessing the prepared synthetic leather, thus endowing the surface of the synthetic leather with properties such as smoothness, abrasion resistance, scratch resistance and the like.

Description

technical field [0001] The invention relates to the field of synthetic leather, in particular to a preparation method of environment-friendly powder wax synthetic leather. Background technique [0002] Synthetic leather is a plastic product that simulates the composition and structure of natural leather and can be used as its substitute material. Usually, the impregnated non-woven fabric is used as the mesh layer, and the microporous polyurethane layer is used as the grain layer. Both the front and back are very similar to leather, and have a certain degree of air permeability, which is closer to natural leather than ordinary artificial leather. Synthetic leather occupies a very important position in human's daily life and is widely used in the production of luggage, clothing, footwear and car interior accessories. [0003] In the existing synthetic leather manufacturing, the polyurethane resin is diluted and added with wood powder or other filling materials, and undergoes...

Claims

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Application Information

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IPC IPC(8): D06N3/14C09D175/04C09D7/12
Inventor 田树松杨毅
Owner ZHEJIANG JINSHANG SYNTHETIC LEATHER
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