1. The raw material for the production of acrylic fiber is cheap propylene, a by-product of petroleum cracking: since polyacrylonitrile copolymer only decomposes without melting when heated to above 230C, it cannot be melt spun like polyester and nylon fibers, but solution spinning is adopted. Spinning can be either dry or wet. Dry spinning speed is high, suitable for spinning silk like fabric. It is very suitable for making short fibers, fluffy and soft, and suitable for making wool like fabrics.
2. Performance and application elasticity of acrylic fiber: its elasticity is better than that of polyester fiber, which is about 2 times higher than that of nylon fiber. It has good shape preservation. Strength: Although the strength of acrylic fiber is lower than that of polyester and nylon, it is 1~2.5 times higher than that of wool. Heat resistance: the softening temperature of the fiber is 190~230C, which is second only to polyester among synthetic fibers. Light resistance: The light resistance of acrylic fiber is the best among all synthetic fibers exposed to the sun in the open air for one year, and the strength only decreases by 20%. Acrylic fiber is resistant to acid, oxidant and general organic solvent, but not alkali. Acrylic fiber products have good bulkiness, warmth retention, soft handle, good weather resistance, mold resistance and moth resistance. The thermal insulation of acrylic fiber is about 15% higher than that of wool. Acrylic fiber can be blended with wool, and the products are mostly used for civilian purposes, such as wool, blankets, knitted sportswear, tarpaulins, curtains, artificial fur, plush, etc. Acrylic fiber is also the raw material of carbon fiber, a high-tech product. Polyester (PP) cotton has good elasticity, strong bulkiness, beautiful shape, is not afraid of extrusion, easy to wash, and fast drying is practical for clothing factories, toy factories, glue spraying cotton factories, non-woven fabrics and other manufacturers. Bedclothes such as double pillow, single pillow, cushion, air-conditioned quilt and warm quilt made of advanced carding machine, sewing machine and fashionable high-quality printed cloth with PP cotton as filler are suitable for newlyweds, children, elderly and other people at all levels
