Polypropylene high-strength yarn is one of the finished polypropylene products, which is one of the most widely used finished products. However, due to its difficult dyeing, the application field of high-strength polypropylene fiber is limited to some extent, especially in clothing. Since this long-standing problem can not be solved at present, is there any way to improve it? Xiaobian to give you an analysis:

Polypropylene in the macromolecular structure does not contain chemical groups can be combined with the dye, so dyeing more difficult. Scientific name Polypropylene fiber, near the flame that is melted, flammable, away from the fire burning slowly and black smoke, yellow flame on the bottom, the bottom of the blue, exudes a smell of oil, after burning ash as hard yellowish brown particles, hand twist fragile . Usually melt-color method, the pigment preparation and polypropylene polymer in the screw extruder evenly mixed, after melt spinning to get color fastness to color fiber. Another method is acrylic acid, acrylonitrile, vinyl pyridine copolymerization or graft copolymerization, the polymer macromolecules can be combined with the dye polar groups, and then directly using conventional dyeing. In the polypropylene production process often need to add a variety of additives to improve dyeing, light and fire resistance.

At present, there is still no way at home and abroad to cure the shortcomings of dyeing high-strength polypropylene fibers, and we can only do our best to improve the situation. Believe that with the development of technology, in the near future can overcome this problem.