When it comes to polypropylene high-strength yarns, the problem of difficult dyeing is a headache. Is there a solution now?
Polypropylene high-strength yarn is a single species of polypropylene finished products, and it is a list of finished products with a wider range of uses. However, due to the difficulty of dyeing, the application field of polypropylene high-strength yarn is limited in order, especially in clothing. Big. Since this old and difficult problem cannot be solved at present, is there a way to improve it?
Polypropylene does not contain chemical groups that can bind to dyes in the macromolecular structure, so dyeing is more difficult. The scientific name is polypropylene fiber. It melts near the flame and is flammable. It burns slowly and emits black smoke from the fire. The upper end of the flame is yellow and the lower end is blue, emitting a smell of petroleum. After burning, the ashes are hard round light yellow-brown particles, which are easily broken by hand twist. . Usually, the melt coloring method is used to uniformly mix the pigment preparation and polypropylene polymer in a screw extruder, and the colored fiber obtained by melt spinning has high color fastness. Another single method is copolymerization or graft copolymerization with acrylic acid, acrylonitrile, vinyl pyridine, etc., to introduce good groups that can be combined with dyes on the polymer macromolecules, and then directly dye with conventional methods. In the process of polypropylene production, various additives are often added to improve dyeability, light resistance and flame resistance.
At present, there is still no way at home and abroad to cure the shortcomings of polypropylene high-strength yarns that are difficult to dye, but I believe that with the development of technology, this problem can be overcome in the near future!
Can the old problem of polypro
