Organic silicon polycarbonate type polyurethane synthetic leather and preparation method thereof

Abstract

The invention provides organic silicon polycarbonate type polyurethane synthetic leather and a preparation method thereof. The organic silicon polycarbonate type polyurethane synthetic leather sequentially comprises an organic silicon rubber resin layer, an organic silicon modified polycarbonate type polyurethane surface layer, an organic silicon modified polycarbonate type polyurethane foaming layer and a base cloth layer from top to bottom. According to the organic silicon polycarbonate type polyurethane synthetic leather prepared by the preparation method, the outermost layer is organic silicon rubber resin, so that the surface of a material is endowed with natural stain resistance, easy cleaning property and skin-friendly touch feeling; the second layer is the organic silicon modifiedpolyurethane compact layer, can react with organic silicon rubber, has the characteristics of high wear resistance and high toughness of polyurethane, and also has the antifouling property and excellent light aging resistance and low temperature resistance of the organic silicon resin; and the third layer adopts organic silicon modified polycarbonate type polyurethane foaming resin, has good low-temperature resistance and aging resistance, and is not degraded in 15 years under normal use conditions.

Description

technical field [0001] The invention belongs to the field of organosilicon polyurethane synthetic leather, in particular to an organosilicon polycarbonate type polyurethane synthetic leather and a preparation method thereof. Background technique [0002] At present, there are three types of synthetic leather materials: PVC synthetic leather, polyurethane synthetic leather, and silicone synthetic leather. Their products all have certain limitations: PVC synthetic leather has poor environmental performance, poor hand feeling, and poor appearance. Under the action of ultraviolet light, the polyurethane resin will break the molecular chain and degrade the molecule, so it cannot be used in outdoor conditions and some engineering materials; silicone synthetic leather has poor material coating performance due to the difficulty of taking into account the wear resistance and ductility of the silicone resin. Synthetic leather materials made of silicone non-foaming materials feel stiff...

AI Technical Summary

Problems solved by technology

[0002] At present, there are three types of synthetic leather materials: PVC synthetic leather, polyurethane synthetic leather, and silicone synthetic leather. Their products all have certain limitations: PVC synthetic leather has poor environmental performance, poor hand feeling, and poor appearance. Under the action of ultraviolet light, the polyurethane resin will break the molecular chain and degrade the molecule, so it cannot be used in outdoor conditions and some engineering materials; silicone synthetic leather has poor material coating performance due to the difficulty of taking into account the wear resistance and ductility of the silicone resin. Synthetic leather materials made of non-foaming silicone materials feel stiff and feel poor

[0003] In the prior art, there is no synthetic leather that can simultaneously have the characteristics of soft hand feeling, excellent wear resistance, good elasticity, etc., and has the characteristics of natural antifouling, strong light resistance, and strong aging resistance of silicone materials.

At the same time, there is no synthetic leather preparation material that has a wide range of applications and excellent comprehensive properties, so that the finished leather prepared with it has good applicability for antifouling home and engineering decoration.

[0004] The strength and wear resistance of ordinary polyurethane materials are better than those of silicone materials, but if the antifouling performance is to be achieved, the surface material needs to have an ultra-high modulus, which usually feels stiff, has a heavy plastic feel on the surface, brittle materials, bending resistance and low temperature resistance. Difference

The silicone rubber material has excellent touch, anti-fouling, light resistance, and aging resistance; but the material has low strength and poor wear resistance.

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