High-durability anti-bacterial and mould-proof polyvinyl chloride artificial leather and preparation method thereof

Abstract

The invention discloses high-durability anti-bacterial and mould-proof polyvinyl chloride artificial leather which comprises a base cloth layer and a PVC layer. Preparation materials of the PVC layercomprise, by mass, 30-70 parts of PVC resin, 20-50 parts of a plasticizer, 1-5 parts of a stabilizer, 1-5 parts of a modifier, 0.5-10 parts of an anti-bacterial and mould-proof agent and 0-2 parts ofa foaming agent. The anti-bacterial and mould-proof agent is a composite anti-bacterial and mould-proof agent which is of a core-shell structure and is formed by compounding silicon dioxide coated silver nano particles and carboxymethyl chitosan. A shell in the silicon dioxide coated silver nano particles is of a porous structure. The composite anti-bacterial and mould-proof agent is prepared in the manner that carboxymethyl chitosan is subjected to alkylating treatment, and then the silicon dioxide coated silver nano particles are loaded onto the alkylated carboxymethyl chitosan. The invention further discloses a preparation method of the high-durability anti-bacterial and mould-proof polyvinyl chloride artificial leather. The artificial leather is high in surface brightness, good in scraping resistance, green, environment-friendly and high in product grade and has the long-lasting and excellent anti-bacterial and mould-proof effect.

Description

technical field [0001] The invention belongs to the technical field of artificial leather, and in particular relates to a highly durable antibacterial and mildew-proof polyvinyl chloride artificial leather and a preparation method thereof. Background technique [0002] Since the 1990s, as the first generation of artificial leather, polyvinyl chloride (PVC) artificial leather products have been gradually replaced by polyurethane (PU) artificial leather due to their shortcomings such as poor air permeability, moisture absorption, inability to recycle, and failure to meet environmental protection requirements. Artificial leather dropped from almost 100% market share to less than 40%. However, in recent years, due to the rising price of PU artificial leather raw materials, coupled with some problems such as poor hydrolysis resistance and weather resistance, the advantages of PVC artificial leather such as hydrolysis resistance, abrasion resistance, scratch resistance, acid and a...

AI Technical Summary

Problems solved by technology

Organic antibacterial agents have fast sterilization speed and strong bactericidal ability, some antibacterial agents are non-toxic, easy to process, good color stability, and the disadvantage is poor heat resistance

Natural organic antibacterial agents mainly include chitosan, serum albumin, cinnamon oil, luohan cedar oil, allicin and natural phenols, etc. Most of these antibacterial agents are refined from animals and plants; natural antibacterial agents are different from other antibacterial agents. The advantages of the agent are environmental friendliness and better biocompatibility, and the disadvantages are poor stability and heat resistance.

[0005] At present, antibacterial agents are mostly used alone in PVC artificial leather, and the antibacterial effect has certain limitations, such as a single component with a narrow bactericidal spectrum, large dosage, short timeliness, and high cost. Some antibacterial agents have poor biodegradability. Poor safety and great impact on the environment

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