Environment-friendly slow-rebound polyurethane synthetic leather for sofa furniture and preparation method of environment-friendly slow-rebound polyurethane synthetic leather

Abstract

The invention discloses environment-friendly slow-rebound polyurethane synthetic leather for sofa furniture and a preparation method of the environment-friendly slow-rebound polyurethane synthetic leather. The environment-friendly slow-rebound polyurethane synthetic leather sequentially comprises a surface layer, a middle layer, a solvent-free foaming layer and base cloth from top to bottom. The solvent-free foaming bonding layer comprises a component A and a component B, wherein the molar ratio of -NCO in the component B to -OH in the component A is 0.90-0.96; the component A comprises the following raw materials: polyether polycarbonate copolymerization type dihydric alcohol, polyether triols, an inhibition type catalyst, monohydroxyl silicone oil, double hydroxyl-terminated silicone oil, a viscosity regulator, a light / heat stabilizer and a filler; and the main raw material of the component B is isocyanate. The prepared polyurethane synthetic leather has excellent environmental protection performance, good durability, soft hand feeling, strong skin-friendly feeling and extremely excellent hydrolysis resistance; and the production process is simple, efficient, green and environmentally friendly, and can meet market requirements of the environment-friendly sofa leather.

Description

technical field [0001] The invention relates to a polyurethane synthetic leather, in particular to an environment-friendly polyurethane synthetic leather for slow rebound sofa furniture and a preparation method thereof. Background technique [0002] With the continuous improvement of global consumers' requirements for health, ecology, green and environmental protection, and the European Union, the United States, Japan and South Korea and other developed countries and regions have increasingly stringent requirements for the ecological and environmental performance of synthetic leather, the production of ecological and environmentally friendly polyurethane synthetic leather has become an important trend. Future trends. [0003] Most of the traditional polyurethane synthetic leathers use solvent-based polyurethane resins as raw materials, which will generate a large amount of waste liquid and gas during the manufacturing process, which not only damages the physical and mental h...

AI Technical Summary

Problems solved by technology

[0003] Most of the traditional polyurethane synthetic leathers use solvent-based polyurethane resins as raw materials, which will generate a large amount of waste liquid and gas during the manufacturing process, which not only damages the physical and mental health of front-line workers, but also seriously pollutes the environment. The polyurethane synthetic leather on sale generally has defects such as hard hand feeling, strong plastic feeling, poor physical properties and hydrolysis resistance, and it is difficult to meet more stringent environmental protection requirements and consumer demand, thus limiting the further development of the polyurethane synthetic leather industry.

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