News on December 6, 2023, according to an announcement from the State Intellectual Property Office, Suzhou Baolidi Material Technology Co., Ltd. has obtained a patent titled "A preparation method for light-absorbing and heat-generating polylactic acid fiber" , authorization announcement number CN116988185B, application date is September 2023. The prepared fiber has excellent comprehensive properties such as light absorption, heat generation, dyeing, and strength.
The patent abstract shows that the invention relates to a method for preparing light-absorbing and heat-generating polylactic acid fibers. After the mixture melt is extruded from the spinneret, the fibers are prepared by cooling and drafting and then subjected to water-soluble treatment to obtain light-absorbing and heat-generating polylactic acid fibers; The mixture melt includes polylactic acid, low molecular weight water-soluble polyester, high molecular weight water-soluble polyester and light-absorbing and heating materials; the mass ratio of polylactic acid, low molecular weight water-soluble polyester and high molecular weight water-soluble polyester is 90~95:2 ~5:3~5; the zero-shear viscosity of high-molecular-weight water-soluble polyester is 5~50 Pa·S greater than that of polylactic acid, and the zero-shear viscosity of polylactic acid is 150 greater than that of low-molecular-weight water-soluble polyester. ~250Pa·S; the fiber prepared by the invention has excellent comprehensive properties such as light absorption, heat generation, dyeing, and strength, and can be widely used in woven fabrics, knitted fabrics, non-woven fabrics or other fiber blends or interweaving.
This fiber has excellent light-absorbing and heating properties and can convert light energy into heat energy to provide warmth to people. This has good application prospects for winter clothing, thermal underwear and other textiles in cold areas.
At the same time, it also has good dyeing performance and strength, which can meet the needs of various textiles. This means it can look great and be durable while maintaining good thermal properties.
In addition, polylactic acid fiber is a biodegradable and environmentally friendly material that helps reduce environmental pollution. Therefore, the light-absorbing and heat-generating polylactic acid fiber developed by Baolidi not only has practical value, but also conforms to the current trend of environmental protection and sustainable development.
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