Environment-friendly solvent-free polyurethane synthetic leather and manufacturing method thereof

Abstract

The invention discloses environment-friendly solvent-free polyurethane synthetic leather which comprises base cloth, a water-based surface layer, a water-based adhesive layer and a solvent-free AB material foaming layer, and the environment-friendly solvent-free polyurethane synthetic leather is characterized in that the water-based adhesive layer is mainly prepared by mixing water-based polyurethane adhesive layer slurry comprising components of 800-1000 parts by weight of a water-based polyurethane emulsion, 80-100 parts by weight of a water-based polyurethane cross-linking agent and 50-60 parts by weight of water-based color paste, the solvent-free AB material foaming layer is mainly prepared by mixing AB material slurry comprising components of 800-1000 parts by weight of mixed polyols, 1-30 parts by weight of an organic metal catalyst, 1 to 90 parts by weight of an organic amine catalyst, 300 to 2000 parts by weight of a filler and 500 to 1500 parts by weight of isocyanate. The preparation method comprises main steps of surface layer coating, adhesive layer coating, AB material coating, curing and the like, the polyurethane synthetic leather and release paper can be immediately separated on the production line, and a lot of time, field and release paper and the like are saved; the production efficiency is improved; the production cost is reduced; and the method is environment-friendly.

Description

technical field [0001] The invention relates to the field of synthetic leather manufacturing, in particular to a method for manufacturing environmentally friendly solvent-free polyurethane synthetic leather. Background technique [0002] my country is the largest producer and consumer of synthetic leather in the world. At present, there are more than 1,100 artificial leather and synthetic leather enterprises in the country, more than 470 enterprises above designated size, and nearly 2,000 production lines. It is one of the pillar industries of my country's light industry. In 2014, the output of artificial leather and synthetic leather of enterprises above designated size was 3.78 million tons, equivalent to 6.8 billion m 2 . Artificial leather synthetic leather has become an important industry in some local industries. [0003] In recent years, with the continuous improvement of people's living standards and environmental protection awareness, consumers' demand for high-p...

AI Technical Summary

Problems solved by technology

This requires a lot of time, space and release paper, etc., which has a great impact on the production efficiency of the product. The physical properties of similar products may have the problem of low peel strength. The water-based surface layer and the solvent-free AB foam layer The adhesion between them is poor, and the problem of separation is easy to occur

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