Negative ion polyurethane resin surface layer slurry for leather

Abstract

The invention discloses negative ion polyurethane resin surface layer slurry for leather, and belongs to the technical field of automobile interior materials. The surface layer slurry comprises, by mass, 100 parts of water-based polyurethane resin, 20-40 parts of water, 10-30 parts of water-based ink and 3-5 parts of a negative ion additive, wherein the negative ion additive is a tourmaline@13X molecular sieve of a core-shell structure; the negative ion additive is added into polyurethane surface coating slurry to prepare the surface layer slurry of the negative ion polyurethane resin. When the surface layer slurry serves as a surface material for automobile interior, negative ion release of the surface material can be realized, and the situation that the mechanical property of the material is reduced and accordingly the overall comprehensive performance of the composite material is influenced is avoided. The compatibility problem of tourmaline powder and a polyurethane system is solved, and the negative ion polyurethane resin surface layer slurry for the leather is prepared.

Description

technical field [0001] The invention belongs to the technical field of automotive interior materials, and in particular relates to a surface layer slurry of anion polyurethane resin for leather. Background technique [0002] Negative ion polyurethane skin materials for automotive interiors, such as microfiber and PU leather, generally add negative ion powder to polyurethane raw materials for processing, because negative ions can purify the air, eliminate peculiar smells and harmful gases in the air, relieve fatigue, and promote human health. Metabolism and other advantages, such as the development of synthetic leather that can release negative oxygen ions, are mainly used in small and confined spaces such as airplanes. Such negative ions are conducive to improving the environment in small spaces and improving the sensory experience of drivers and passengers. Therefore, the dispersion and dispersion stability of anion powder directly affect the final quality and various prope...

AI Technical Summary

Problems solved by technology

However, there are problems in this process at present: the surface energy of tourmaline powder is large, and the surface activity of ultrafine negative ion powder particles is very high. Individual particles cannot exist stably, and tend to agglomerate through mutual attraction, thereby reducing their surface energy to form stable state

Moreover, after agglomeration, it will lead to the deterioration of the performance of the ultrafine powder, which is not conducive to the performance of the negative ion powder, and is more prone to product quality problems.

In the application, the surface properties of tourmaline powder and high molecular polymer are quite different, which makes it more difficult for it to be uniformly dispersed and stable in non-polar polymers. If it is directly filled in organic matter, it will easily lead to some performance degradation of the material, thus Affect the overall comprehensive performance of composite materials

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