Environment-friendly type high-performance PU synthetic leather and its preparation method

Abstract

The invention relates to a kind of environment-friendly high performance PU synthetic leather which belongs to burn-retarding synthetic leather domain. The invention uses the aquosity polyurethane as the material, the phosphide fire-fast plasticizer as the retardant; it also contains the accessories such as modifier and dispersing agent; the invention has solved the serious environment-protection problem in leather producing and the eight poisonous and toxic elements in the synthetic leather has satisfied the European standards. By adding organosilicon dry lubricant prescription in the invention, the leather has many effects such as clean, dry, lubricate, sterilization, mould proof, water proof, moisture absorption proof and separation proof; it has more notable dermis simulating effect.

Description

technical field [0001] The invention relates to the field of flame-retardant synthetic leather, in particular to an environment-friendly high-performance PU synthetic leather, and at the same time provides a preparation method for the PU synthetic leather. Background technique [0002] At present, in the production process of domestic synthetic leather, organic solvent-based PU resin is usually used as the basic raw material for the production of leather base and surface layer. This type of PU resin is passed through toluene, xylene, acetone, methyl ethyl ketone, ethyl acetate, Dimethylformamide etc. are used as the main solvents to obtain by solvent polymerization. These organic solvents are harmful substances. According to statistics, a synthetic leather production line needs to consume about 10 tons of solvent-based PU resin per day, which accounts for the total amount of solvent-based PU resin. More than 60% of the solvent is used. Although about 85% of the solvent in th...

AI Technical Summary

Problems solved by technology

[0002] At present, in the production process of domestic synthetic leather, organic solvent-based PU resin is usually used as the basic raw material for the production of leather base and surface layer. This type of PU resin is passed through toluene, xylene, acetone, methyl ethyl ketone, ethyl acetate, Dimethylformamide etc. are used as the main solvents to obtain by solvent polymerization. These organic solvents are harmful substances. According to statistics, a synthetic leather production line needs to consume about 10 tons of solvent-based PU resin per day, which accounts for the total amount of solvent-based PU resin. More than 60% of the solvent is used. Although about 85% of the solvent in the wet production line is recovered, there are still about 15% of the solvent in the wet production line and 95% of the solvent in the dry production line. The surrounding rivers and sky are bound to seriously pollute the local environment, posing a major threat to people's production, life, and public life and health.

[0003] On the other hand, in the production process of domestic synthetic leather, inorganic materials such as antimony trioxide are used as flame retardants, which cannot improve the plasticity of leather products, and the flame retardant effect is not optimal. At the same time, heavy metal elements antimony are brought into leather products etc., affecting the environmental indicators of the product