Water-soluble Polyvinyl Alcohol Fiber Chopped Fiber

Production method of Polyvinyl Alcohol Fiber
The average molecular weight of polyvinyl alcohol, the raw material used in Polyvinyl Alcohol Fiber, is 60,000 to 150,000, with a thermal decomposition temperature of 200 to 220℃ and a melting point of 225 to 230℃. Polyvinyl alcohol fiber can be produced by wet spinning and dry spinning. The heat-treated Polyvinyl Alcohol Fiber can be acetalized to polyvinyl alcohol formaldehyde fiber. The process of acetalization is the process of washing the tow to remove manganese (sodium sulfate), from the aldolization solution (from the aldolizer formaldehyde, diluent water, catalyst sulfuric acid, swelling agent sodium sulfate composition) through, and then by the process of water washing. The tow can also be cut into short fibers and conveyed by airflow to a post-treatment machine for acetalization on a stainless steel mesh. In order to improve the fiber properties, the polyvinyl alcohol solution containing the crosslinking agent boric acid (concentration of 16%) for wet spinning, the resulting primary fibers in the alkaline coagulation bath coagulation, through the neutralization, washing and multi-stage high-fold stretching and heat treatment, you can get the strength of 106 ~ 115cN / dtex filaments 

Uses of Polyvinyl Alcohol Fiber
Polyvinyl alcohol formaldehyde fiber in the industrial field can be used to make canvas, tarpaulin, filter cloth, transport belt, packaging materials, work clothes, fishing nets and cables for sea work. High-strength, high-modulus filaments can be used as skeleton materials for transport belts, lining materials for all kinds of hoses, adhesive tapes and shoes, and can also be used to make bicycle tire cords. Since this fiber can resist the alkali of cement and has good adhesion and affinity with cement, it can replace asbestos as the reinforcing material of cement products. It can be blended with cotton to make all kinds of clothing and interior products, and can also produce knitted products. However, the heat resistance is poor, the fabrics produced are not stiff and cannot be washed in hot water. In addition, it is also used in non-woven fabrics and paper making.

Company information

The company's main import and export products include

（1）Organic Raw Materials：The organic raw materials are Petrochemicals made of petroleum and natural gas, and the industries of various organic chemical products are produced or fractionated by the raw material gas after coal gasification and the coal tar recovered by dry distillation.

（2）Intermediates:It is a very important type of fine chemical products, the essence of a class of "semi-finished products", is the production of some products in the middle of the product, such as to produce a product, can be produced from the intermediates, cost savings, from the synthesis of pharmaceuticals, pesticides, paints, dyes and fragrances are widely used. In the pharmaceutical field, intermediates are an important link in the pharmaceutical industry chain, used in the process of drug synthesis of some chemical raw materials or chemical products, in a word, used to produce APIs.