Low-density polyethylene-modified polyvinyl chloride (PVC) synthetic leather and manufacturing method thereof

Abstract

The invention discloses low-density polyethylene-modified polyvinyl chloride (PVC) synthetic leather. The low-density polyethylene-modified PVC synthetic leather comprises a surface layer, a foamed layer, a bonding layer and a brushing fabric, and is characterized in that the surface layer is prepared by mixing the following raw materials in parts by weight to form slurry: 30 to 40 parts of SG-1 type PVC resin, 70 to 80 parts of SG-6 type PVC resin, 45 to 50 parts of propanediol sebacate polyester, 20 to 25 parts of n-butyl methacrylate, 5 to 6 parts of PVC color paste, 1 to 2 parts of di-hydrosulfo isooctyl chloroacetate di-n-octyl tin, 1 to 2 parts of zinc stearate, 5 to 10 parts of light calcium carbonate, 2 to 3 parts of 4,4'-oxo bi-benzenesulfonyl hydrazide, 40 to 45 parts of nano- barite powder and 50 to 60 parts of modified bentonite. Through the improvements of the formula and the process, the flexibility of the synthetic leather is improved, and the synthetic leather has a natural comfortable hand feeling similar to that of natural leather and is difficult to damage or tear after being used for 3 to 5 years.

Description

technical field [0001] The invention belongs to the technical field of chemical synthetic leather fabric processing, in particular to low-density polyethylene modified polyvinyl chloride synthetic leather and a manufacturing method thereof. Background technique [0002] At present, polyvinyl chloride synthetic leather modified by polyurethane and low-density polyethylene is widely used in commercial furniture and household furniture and other furniture fields. Polyurethane synthetic leather has the advantages of high imitation and good hand feeling, and has been widely favored by the market. However, a large amount of DMF solvent with certain toxicity and volatility is used in its manufacturing process, and there will be a large amount of residual DMF even after sufficient drying, which becomes a source of excessive VOC pollution in indoor air; at the same time, polyurethane synthetic leather is resistant to hydrolysis, Insufficient weather resistance and other problems lim...

AI Technical Summary

Problems solved by technology

However, a large amount of DMF solvent with certain toxicity and volatility is used in its manufacturing process, and there will be a large amount of residual DMF even after sufficient drying, which becomes a source of excessive VOC pollution in indoor air; at the same time, polyurethane synthetic leather is resistant to hydrolysis, Insufficient weather resistance and other issues limit its further wide application

Low-density polyethylene modified PVC synthetic leather has the advantages of excellent hydrolysis resistance, abrasion resistance, scratch resistance, flame retardancy, etc., but there are problems in product quality