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Waterborne polyurethane wet-process automobile leather and preparation method thereof

A water-based polyurethane and automotive leather technology, which is applied in motor vehicles, road vehicles, textiles and papermaking, etc., to achieve the effects of reduced energy consumption, excellent hand feeling and good solvent resistance

Inactive Publication Date: 2017-10-27
HEFEI KETIAN WATERBORNE TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In recent years, the research on the preparation of waterborne polyurethane synthetic leather has made great progress, but the research on high-performance automotive leather is still in the traditional manufacturing process, especially in terms of leather feel, wear resistance, high peeling performance and ecological environmental protection. pending further research and development

Method used

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  • Waterborne polyurethane wet-process automobile leather and preparation method thereof
  • Waterborne polyurethane wet-process automobile leather and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] A preparation method of water-based polyurethane automobile leather, comprising the following steps:

[0049] 1. Ingredients

[0050] A. Preparation of impregnation solution: Take 10 kg of water-based polyurethane aliphatic resin KT635F (prepared by Hefei Ketian Chemical) with a solid content of 42% and add it to 90 kg of tap water, stir at a high speed to obtain the impregnation solution.

[0051] B. Preparation of coagulation solution: Mix and stir 8kg of phosphoric acid and 92kg of tap water to completely dissolve phosphoric acid in water to obtain coagulation solution.

[0052] C, prepare foaming slurry: getting solid content is 42% water-based polyurethane aliphatic resin KT635F (prepared by Hefei Ketian Chemical Industry) 300kg, foam stabilizer 207 of foaming agent K12 (Jinan Shuochang Chemical Industry) of 9kg, 9kg (Qingdao Zhongbao Chemical Industry), 3kg of water-based cross-linking agent and 3kg of water-based thickener 3220 (Shenzhen Haichuan Chemical Indust...

Embodiment 2

[0062] A preparation method of aqueous polyurethane wet-process automobile leather, comprising the following steps:

[0063] 1. Ingredients:

[0064] A. Preparation of impregnating solution: take 12 kg of water-based polyurethane resin KT635F (prepared by Hefei Ketian Chemical Industry Co., Ltd.) with a solid content of 42%, add it to 88 kg of tap water, and stir at a high speed to obtain the impregnating solution.

[0065] B. Preparation of coagulation solution: get 10kg of calcium chloride and 90kg of tap water and mix and stir, so that the calcium chloride is completely dissolved in water to obtain the coagulation solution.

[0066] C, preparation foaming slurry: getting solid content is 42% water-based polyurethane resin KT635F (prepared by Hefei Ketian Chemical Industry) 290kg, 12kg foaming agent zinc stearate (Henan Huier Nano), 12kg foam stabilizer 207 (Qingdao Zhongbao Chemical), 4.5kg of water-based crosslinking agent HD-105 (Shanghai Haodeng) and 3kg of water-based ...

Embodiment 3

[0076] A preparation method of aqueous polyurethane wet-process automobile leather, comprising the following steps:

[0077] 1. Ingredients:

[0078] A. Preparation of impregnating solution: take 15 kg of water-based polyurethane resin KT635F (made by Hefei Ketian Chemical Industry Co., Ltd.) with a solid content of 42%, add it to 85 kg of tap water, and stir at a high speed to obtain the impregnating solution.

[0079] B. Preparation of coagulation solution: get 10kg of lactic acid and 90kg of tap water and mix and stir, so that the lactic acid is completely dissolved in water to obtain the coagulation solution.

[0080] C, prepare foaming slurry: getting solid content is 290kg of water-based polyurethane resin KT635F (Hefei Ketian chemical industry) of 42%, the whipping agent zinc stearate (Henan Huier nanometer) of 14kg, the foam stabilizer 207 of 15kg ( Qingdao Zhongbao Chemical), 4kg of water-based cross-linking agent HD-105 (Shanghai Haodeng) and 4kg of water-based thic...

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Abstract

The invention provides waterborne polyurethane wet-process automobile leather and a preparation method thereof. The method comprises the following steps: 1) base fabric treatment: firstly, impregnating a non-woven fabric with impregnation liquid in an impregnating tank, then, carrying out pre-coagulation through a coagulating solution in a coagulating tank, and carrying out ironing and baking by an ironing roller; 2) coating: coating the treated non-woven fabric with foaming slurry; 3) coagulation: carrying out coagulation on the foaming slurry coated non-woven fabric through the coagulating solution in the coagulating tank; 4) rinsing and baking: clearing superfluous coagulating solution through a rinsing bath, and carrying out baking sizing so as to obtain a waterborne automobile leather base; 5) dry-process facing: coating release paper with waterborne surface layer slurry in a scraping manner, carrying out baking, coating a waterborne bonding material in a scraping manner, carrying out laminating by using the waterborne automobile leather base, carrying out baking, and carrying out stripping, thereby obtaining the waterborne polyurethane automobile leather. According to the waterborne polyurethane wet-process automobile leather and the preparation method thereof, by adopting waterborne polyurethane resin slurry and waterborne environment-friendly auxiliaries, the automobile leather is free of any organic solvent during preparation and use, the solvent-type solvent contamination of the automobile leather is avoided, and the clean production is achieved.

Description

technical field [0001] The invention relates to the technical field of water-based polyurethane synthetic leather, and specifically discloses a water-based polyurethane wet-process automobile leather and a preparation method thereof. Background technique [0002] At present, synthetic leather has been applied in various fields in people's life, and there are many varieties. Automobile leather is an indispensable synthetic leather product in the development of the automobile industry. Most of them are manufactured by solvent-based polyurethane wet method or genuine leather coated with solvent-based resin to obtain solvent-based wet-laid automobile leather base. Solvent-based wet-laid automotive leather has the advantages of light weight, wear resistance, heat resistance, toughness, good cold resistance, and high tensile strength. However, serious water pollution and heavy metal pollution are produced in the wet manufacturing process of solvent-based polyurethane and the manu...

Claims

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Application Information

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IPC IPC(8): D06N3/14D06N3/00
CPCD06N3/14D06N3/0011D06N3/0045D06N3/0056D06N3/0077D06N3/0097D06N2205/023D06N2209/1685D06N2211/263D06N2211/28
Inventor 戴家兵王刚李维虎
Owner HEFEI KETIAN WATERBORNE TECH CO LTD
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