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Preparation method of waterborne polyurethane high-physical-property high-density space leather base

A water-based polyurethane and high-density technology, applied in textiles, papermaking, fiber treatment, etc., can solve the problems of poor foaming effect of water-based polyurethane synthetic leather basses, non-environmental protection of synthetic leather, low physical properties and density, etc., and achieve fine and compact structure , Not easy to crack and wear, flexible to the touch

Pending Publication Date: 2022-06-21
HEFEI KETIAN WATERBORNE TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In order to solve the deficiencies in the prior art that solvent-based polyurethane synthetic leather is not environmentally friendly and toxic, has low physical properties and density, and the foaming effect of water-based polyurethane synthetic leather is poor, one of the purposes of the present invention is to provide a water-based polyurethane with high physical properties. Preparation method of high-density space leather bass

Method used

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  • Preparation method of waterborne polyurethane high-physical-property high-density space leather base
  • Preparation method of waterborne polyurethane high-physical-property high-density space leather base
  • Preparation method of waterborne polyurethane high-physical-property high-density space leather base

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Embodiment 1

[0039] A method for water-based polyurethane high-physics and high-density space leather bass, comprising the following steps:

[0040](1) Preparation of water-based polyurethane impregnating material: the foaming slurry is composed of the following raw materials and parts by weight: 10 parts of KT635M anionic water-based polyurethane resin with a solid content of 35%, 100 parts of deionized water, and 0.3 parts of water-based defoamer , 0.3 parts of multifunctional auxiliary agent, 1 part of water-based fabric finishing agent, 3 parts of sodium bicarbonate solution, 0.5 part of water-based thickener, and fully stirred to obtain water-based polyurethane impregnating material;

[0041] (2) Preparation of the first water-based polyurethane foaming slurry: the foaming slurry is composed of the following raw materials and their parts by weight: 300 parts of KT635M anionic water-based polyurethane resin with a solid content of 35%, 2.5 parts of A168 powder wetting agent , 25 parts ...

Embodiment 2

[0056] This embodiment provides a method for water-based polyurethane high-property and high-density space leather bass, specifically referring to Example 1, the difference is that the solid content of the KT635M anionic water-based polyurethane resin in step (1) and step (2) is 40%, In the step (3), the solid content of the KT751M anionic water-based polyurethane resin is 40%, and the water-based polyurethane high-physics and high-density space leather bass 2 is prepared.

Embodiment 3

[0058] This embodiment provides a method for water-based polyurethane high-property and high-density space leather bass, specifically referring to Example 1, the difference is that the solid content of the KT635M anionic water-based polyurethane resin in step (1) and step (2) is 45%, In the step (3), the solid content of the KT751M anionic water-based polyurethane resin is 45%, and the water-based polyurethane high-physics and high-density space leather bass 3 is prepared.

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Abstract

The invention provides a preparation method of a water-based polyurethane wet-process space leather base with high physical property and high density, which comprises the following steps: preparing water-based polyurethane impregnation slurry, preparing water-based polyurethane foaming slurry, impregnating needle-punched non-woven fabric, treating impregnated base cloth, coating, condensing, washing, back coating and drying, according to the preparation method of the high-physical-property waterborne polyurethane high-physical-property high-density space leather base provided by the invention, the basic physical property of the space leather base is qualitatively improved by adjusting the proportion of the resin in the waterborne polyurethane impregnation material and the waterborne polyurethane foaming slurry; the compact foam holes in the waterborne polyurethane foaming slurry enable the space leather base to have excellent air and moisture permeability and strong genuine leather feeling, and completely meet the requirements of the synthetic leather market on the high-density space leather base.

Description

technical field [0001] The invention belongs to the technical field of water-based polyurethane synthetic leather, and in particular relates to a preparation method of water-based polyurethane high-property and high-density space leather bass. Background technique [0002] At present, synthetic leather has been used in various fields of people's life, with various varieties. Space leather is a kind of synthetic leather product, which is made of solvent-based polyurethane. The DMF (dimethylformamide) in the solvent-based polyurethane is replaced with water by a wet process, so that the coating has continuous pores, so as to achieve moisture permeability. gas. It has the characteristics of light weight, wear resistance, heat resistance, toughness, good cold resistance and high tensile strength. However, a large amount of DMF, solvent-based additives and colorants are used in the coating slurry, which not only harms the health of consumers, but also seriously damages the ecol...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06N3/00D06N3/14D06M15/564
CPCD06N3/0011D06N3/0047D06N3/14D06M15/564D06N2211/28
Inventor 李维虎王永乐戴家兵陈标王刚
Owner HEFEI KETIAN WATERBORNE TECH CO LTD
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