Nano deodorant polyurethane synthetic leather and preparation method thereof

Abstract

The invention belongs to the technical field of polyurethane synthetic leather, and particularly relates to nano deodorant polyurethane synthetic leather. The nano deodorant polyurethane synthetic leather comprises a nano deodorant polyurethane synthetic leather body, wherein the nano deodorant polyurethane synthetic leather body consists of pretreated base cloth, a waterborne polyurethane foamingslurry layer which coats the pretreated base cloth in a blade coating manner, and a halogen-free flame-retardant layer which is compounded on the waterborne polyurethane foaming slurry layer. By adopting waterborne polyurethane resin slurry and a waterborne environment-friendly additive, the space leather is free of any organic solvent in the preparation and application process, the problems of pollution and residue of solvent type space leather can be solved, and clean production can be realized; by adding nano modified bamboo charcoal and a film forming agent prepared from a modified nano TiO2 / waterborne polyurethane composite material, the air permeability of the synthetic leather can be remarkably improved, and meanwhile, the antibacterial and deodorant performance is good; and by adding a modified multi-walled carbon nanotube, the synthetic leather prepared from the modified multi-walled carbon nanotube is excellent in mechanical performance and high in tensile strength and elongation at break.

Description

technical field [0001] The invention relates to the technical field of polyurethane synthetic leather, in particular to a nano deodorant polyurethane synthetic leather and a preparation method thereof. Background technique [0002] Polyurethane synthetic leather belongs to the category of polyurethane elastomers. It has soft and natural luster, soft touch, and a strong leather-like appearance. It has excellent mechanical properties such as excellent adhesion to substrates, wear resistance, flex resistance, and aging resistance. At the same time, it also has the advantages of good cold resistance, breathability, washability, convenient processing, and low price. It is the most ideal substitute for natural leather. [0003] The wet-process polyurethane synthetic leather process mainly makes the slurry fully penetrate into the gap of the non-woven fabric through extrusion, and then puts the non-woven fabric in the coagulation bath, and uses the "DMF-HO" system to make the DMF c...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies of the prior art, the present invention provides a nano deodorant polyurethane synthetic leather and its preparation method, which solves the problem of using a large amount of organic solvents in the preparation of the existing polyurethane synthetic leather, which is harmful to health and pollutes the environment, and the air permeability and deodorization of the product Poor durability, lack of high tensile strength and elongation at break, poor durability, and mechanical properties that cannot meet the needs of use

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