| Compared with polyester and other fibers, nylon6fibers show better properties in flexibility, abrasion resistance, alkali resistance, moisture absorption, elastic recovery rate, and light weight etc. So in the high-grade underwear, stockings and outdoor clothing has a lot of applications. Developing and Researching far infrared nylon6fiber with warm and health care function, has wide market prospect and great application value.Using commercially available Mg-AI LDHs as the materials, we obtained Mg-AI composite metal oxide (MMO), via calcination of LDHs at500℃for4hours. And then, the high dispersibility ceramic powders were prepared by mixing and organic modification the mixture consisting of MMO and silicon oxide, zirconium oxide. In this paper, we focus on the process of preparation of far infrared additive. During the process of experiments, the powder was grinded, mixed and modified, via wet processing and dry processing, respectively. Different nanometer powders were obtained, and named IRP-WP and IRP-DP respectively. The different far infrared radiation powders were characterized by Nanoparticle Size Analyzer, Optical Contact Angle Measuring Device and EDS. It showed that the size of powders processed by the dry processing mainly distributed in about480nm, which is a little narrow. And the size of powders processed by the wet processing mainly distributed in about300nm, which is narrow. The powders named IRP-WP were better than the IRP-DP in homogeneity. After surface modification, the powder’s contact angle of IRP-DP is54.8°, and the IRP-WP is63.9°.Infrared radiation PA-6resins were prepared by the addition of infrared radiation powders and then melt-extruded. The resins then were used for spinning, to obtain far infrared nylon6fibers. Far infrared textiles were prepared in the hosiery knitter with the fiber. Hot stretching in3.3,3.5,3.7, compared with pure nylon6fiber, the fracture strength of far infrared fiber IRF-WP (contain the additive was processed by the wet processing technology) decreased8.6-16.7%, and the far infrared fiber IRF-DP (contain the additive was processed by the dry processing technology) decreased14.3-25.0%.In our investigation, we put forward some measures in the characterization methods of far infrared textiles to improve the shortcomings. We established a method and built a platform to characterize far infrared textiles, named Far Infrared Textile Testing Platform. The device has advantages in simple structure, convenient operation, and accurate, rapid, portable, so it is easy to be used in production.In order to improve the performance of infrared emission, another additive was studied. This additive is composed of TiO2nanoparticles, SiC nanoparticles, SiO2nanoparticles and ZrO2nanoparticles. The mixed powders were made into films by scraping method and used for testing by the Far Infrared Testing Platform. It showed that the samples named IRP-4(TiO2:SiO2:ZrO2:SiC=6:2:2:1) and IRP-3(TiO2:SiO2:ZrO2:SiC=6:2:2:1) were better than others, and the rate was about5℃. Then the mixed powders IRP-4were processed by wet processing, and used for preparing far infrared nylon6fibers and textiles. We prepared two different content fibers, they were2wt.%and1wt.%. We use the Yarn Strength Tester characterized their mechanical property. The results proved that when the draft multiple is3.3, the fracture strength of fibers whose additive content is lwt.%and2wt.%were8.6%and5.7%higher than pure nylon6fiber, respectively. And we characterized the textiles by the Far Infrared Textile Testing Platform, it was indicated that after6min of irradiation the textile’s (additive content is2wt.%and1wt.%) temperature were3℃and2℃higher than pure nylon6textile. |
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