Process Technology Design Of Imitated Synthetic Hair Fiber

Compared with the natural fiber, imitated synthetic hair fiber can effectively reduce the cost and solve the shortage of resources. Nowadays, some shortcomings should be solved, such as fade, poor color fastness and flammability. Therefore, according to the structure and performance of commercial wig, the experimental scheme of spinning solution coloring and blending flame retardant was designed and the spinning process was probed. Finally, we obtained the synthetic simulation hair fiber.Firstly, the structure, morphology, mechanical properties and thermal stability of wig fibers were characterized by Fourier Transform Infrared (FTIR) spectroscopy, scanning electron microscopy (SEM), mechanical machine and thermal gravimetric analysis (TGA), respectively. The results showed that the cross section of fiber was oval with the diameter ranged from40to80μm. The surface of fiber was not smooth and the tensile stress of single fiber was more than25cN, elongation at break was25～90%, which meet the National Standard of People’s Republic of China (GB/T23170-2003). The weight loss began at250℃which meets the high-temperature heat treatment and heat setting under160℃.On the foundation of understanding the basic requirements of the synthetic fiber, the coloring stability of fiber was investigated. The dispersibility and stability of carbon black in DMAc was improved by adding DP80-8660dispersant and the carbon black dispersed well in the coagulated film. Rheological tests showed that the viscosity of Vinyl Chloride-Acrylonitrile spinning solution with DMAc as solvent decreased with the content of carbon black increasing.The fiber samples with diameter range of40～70μm were prepared by wet spinning machine. The morphology, cross section, mechanical properties and thermal stability were investigated. The results showed that tensile strength of single fiber more than25cN. The carbon black thoroughly dispersed in the matrix. The TGA showed fiber samples had pretty good thermal stability, flammability meeting the requirements of application.Finally, all of the factors including spinneret, reaction kettle, metering pump and drawing process were taken into consideration to design the technology of1OOt/y spinning line based on the above results.