Solvent-free thermochromic luminescent synthetic leather and manufacturing method thereof

Abstract

The invention discloses a manufacturing method of a solvent-free thermochromic luminescent synthetic leather. The method includes the steps that firstly, a long-afterglow luminescent material is subjected to surface group activation modification; then, the modified long-afterglow luminescent material and a thermochromic capsule are introduced into a polyurethane surface layer at the same time through a bi-component in-situ coating technology, and the solvent-free thermochromic luminescent synthetic leather is obtained. The problems are solved that an existing blended compound luminescent material has poor compatibility with polyurethane, migration separation-out occurs easily and distribution is not uniform. The synthetic leather can absorb and store sunlight in the daytime and continuously emit light at night, the color can change reversibly with temperature in the daytime, the color of light can also change with temperature at night, the color of polyurethane can be controlled by changing temperature, the synthetic leather can have new styles and designs, the functionality of the synthetic leather is improved, and the application range of the synthetic leather is broadened. No organic solvent is used in the preparation process, which meets the development tendency of the synthetic leather industry and the green consumption and environmental health requirements of consumers.

Description

technical field [0001] The invention belongs to the field of synthetic leather material technology and synthetic leather manufacture, and in particular relates to a method for manufacturing a solvent-free energy storage luminescent synthetic leather. Background technique [0002] In the synthetic leather industry, the artificial leather produced by compounding polyurethane (PU) resin and base fabric is called PU synthetic leather, or synthetic leather for short. PU synthetic leather has the advantages of rich colors, various patterns, excellent performance, etc., and the price is cheaper than leather fabrics. , automotive interiors, shoes, luggage and other aspects play an irreplaceable role. As people's demand for high-performance, high-quality, high-environmental ecological synthetic leather continues to rise, single-performance synthetic leather products can no longer meet the needs. In recent years, functional synthetic leather such as luminescence, discoloration, wave ...

AI Technical Summary

Problems solved by technology

[0005] Introducing long-lasting luminescent materials into synthetic leather in the form of blending and doping often has problems such as easy shedding of long-lasting luminescent materials, poor compatibility with resin substrates, uneven distribution, and unstable content, which affects the luminous performance

Moreover, the most widely used long-lasting luminescent materials are mainly green aluminates or blue silicates. The luminescent colors are concentrated in a narrow wavelength range, and the color is single, which is too monotonous and dull, and cannot give people special attention. It is young people who like to pursue fashion elements to bring more beauty and fun. Single-color fabrics cannot meet the needs of the market, and it also limits the choice of clothing designers for individual clothing fabrics, limiting its wider application.

Furthermore, there is no relevant report on using this type of material to develop thermochromic synthetic leather.