A kind of preparation method of environment-friendly polyvinyl chloride water-based artificial leather

Abstract

The invention discloses a method for preparing environment-friendly polyvinyl chloride water-based artificial leather. The method comprises the following specific steps: (a) grinding broken cow leather, rolling into pieces, and attaching to polyester yarns to serve as a backer; (b) mixing polyvinyl chloride resin powder, a plasticizer DOTP, a stabilizing agent, a foaming agent and a TPU modifier, and uniformly stirring; (c) adding the mixture into an internal mixer and an open mill for plastifying; (d) feeding the mixture into a four roll calender to be pressed into a film, and compounding with the backer; (e) foaming at a low temperature; and (f) embossing, cooling, performing water-based coating on the surface, thereby obtaining the environment-friendly polyvinyl chloride water-based artificial leather. According to the artificial leather prepared by the method disclosed by the invention, the leather content is 60-65 percent, the prepared artificial leather has the handfeel of leather, the characteristics of flexibility, wear resistance and cold resistance and the advantages of low price and bright color. Meanwhile, only water vapor is volatilized in the production process, the artificial leather is harmless to the human body and environment, and the high requirement on environment friendliness of synthetic leather at home and abroad is met.

Description

technical field [0001] The invention relates to an artificial leather, in particular to a preparation method of an environment-friendly polyvinyl chloride water-based artificial leather. Background technique [0002] Genuine leather is a kind of natural leather, which is mainly processed from mammalian animal skin. It has the characteristics of good flexibility, strong air permeability, and comfortable handle. There are many kinds of genuine leather, but most of them are expensive and require more storage and care. High, so it is not suitable for popularization, and human beings hunt animals excessively for leather, and it has become the chief culprit of many animals becoming extinct or endangered; artificial leather is a kind of leather that looks and feels like leather and can be used instead plastic Articles, usually based on fabric, coated with synthetic tree fat Ordinary artificial leather is cheap, bright and colorful, and has a variety of varieties. It is widely u...

AI Technical Summary

Problems solved by technology

[0002] Genuine leather is a kind of natural leather, which is mainly processed from mammalian animal skin. It has the characteristics of good flexibility, strong air permeability, and comfortable handle. There are many kinds of genuine leather, but most of them are expensive and require more storage and care. High, so it is not suitable for popularization, and human beings hunt animals excessively for leather, and it has become the chief culprit of many animals becoming extinct or endangered; artificial leather is a kind of leather that looks and feels like leather and can be used instead plastic Articles, usually based on fabric, coated with synthetic tree fat Ordinary artificial leather is cheap, bright and colorful, and has a variety of varieties. It is widely used in clothing, bag making and other fields. However, artificial leather is not as comfortable as genuine leather, and its air permeability, wear resistance and cold resistance are also poor. It is easy to age and wear. At the same time, organic solvents such as methyl formamide DMF, butanone MEK, acetone ACT, and toluene TOL are often used in the preparation process of artificial leather. These solvents have certain toxicity and are strongly irritating to the human respiratory tract. The production volatilizes into the external environment, causing air and river pollution, which is not conducive to environmental protection

[0003] A kind of imitation leather is currently popular in the market. A thin layer of genuine leather powder is directly planted on the surface of the artificial leather, so it has a comfortable feel similar to natural leather. However, because the genuine leather is easily damaged during the plastic foaming process, these genuine leather The mass ratio of powder in the whole leather is only 0.1%-0.3%. The imitation leather produced by this method does not have the characteristics of gas permeability and wear resistance of genuine leather, and does not avoid the shortcomings of artificial leather.