Low-smell and high-strength durable PVC artificial leather and production method thereof

Abstract

The invention relates to the technical field of PVC artificial leather, and especially relates to a low-smell and high-strength durable PVC artificial leather and a production method thereof. The method comprises the following steps: 1, mixing polyvinyl chloride with liquid nitrile butadiene rubber, castor oil and diallyl phthalate to obtain a mixed slurry; 2, directly knife-coating a base material through a knife coating process, and carrying out plasticizing reaction molding; or knife-coating by using a foaming agent-containing mixed slurry, and knife-coating a mixed slurry without the foaming agent; and 3, carrying out a post-treatment process comprising embossing, surface printing and the like to obtain the low-smell and high-strength durable PVC artificial leather. The tension load, ageing resistance and smell tests of the PVC artificial leather with the thickness of 1.4mm obtained in the invention according to QB / T2710, QB / T2779 and QB / T2725 show that the tension load is not lower than 400N, the surface at a low temperature does not crack, and the smell is not greater than 3 grade. The PVC artificial leather satisfies requirements of mechanical properties and smells of artificial leather for yacht seats, artificial leather for household automobile seats and artificial leather for engineering automobile seats.

Description

technical field [0001] The invention relates to a production process of artificial leather, in particular to a low-odor, high-strength and durable PVC artificial leather and a production method thereof. Background technique [0002] Artificial leather and synthetic leather are composite materials that simulate the tissue structure and performance of leather and can be used as leather substitutes. Usually, woven fabrics and non-woven fabrics are used to simulate the mesh layer of leather, and microporous polymer coatings are used to simulate the grain layer of leather. The obtained artificial leather and synthetic leather are similar to leather on the front and back, and are widely used in making shoes. , boots, bags and balls, etc. [0003] In the usual classification method, artificial leather is a leather-like material made of textile cloth as the base cloth and coated with polymer slurry. Most of them use polyvinyl chloride (PVC) as the coating agent, commonly known as "...

AI Technical Summary

Problems solved by technology

[0018] At present, for PVC artificial leather products, the main problems are as follows: First, in PVC artificial leather products, a large amount of plasticizers need to be added, and these plasticizers have certain volatility, making PVC artificial leather products There is a certain unpleasant smell, which limits the application of PVC artificial leather products in car seat materials, etc.; second, ordinary PVC resin has poor cold resistance, impact resistance, and aging resistance, which leads to the durability of PVC artificial leather. poor