How to improve the stability of polypropylene yarn to light

Polypropylene yarn is a kind of fiber, but it is not a natural fiber. It is a yarn that uses polypropylene as a raw material and undergoes a natural chemical reaction through mechanical action, and finally spins successfully. And polypropylene yarn is a textile, so its work is very cumbersome and laborious, whether it is for the improvement of equipment or the consideration of technical personnel, it is very important.

The relationship between polypropylene yarn manufacturers, sunlight, and polypropylene yarn finished products is like a converter. Under the interaction of the first two, the photosynthetic stability of the original polypropylene molecule of polypropylene can be improved accordingly, while the molecular content increases. The change law of tensile strength with aging time is basically the same, which can prove that the aging of polypropylene yarn by sunlight ultraviolet rays will cause the reduction of molecular content in its essence.

For the spinning method of polypropylene yarn, two types of spinning methods are commonly used by enterprises now, namely solution spinning and wet spinning. The former is to dissolve the highly polymerized substance into a spinning solution by selecting a suitable solvent, or to make polypropylene into a soluble intermediate, dissolve it into a wanton solution, and finally carry out the spinning work. Solution spinning is divided into wet spinning and dry spinning according to different coagulation conditions. The principle of wet spinning is to dissolve polypropylene raw materials in a solvent to make a spinning solution, and then spray the spinning solution from a spinneret into a coagulation bath. Due to the diffusion and penetration of the solvent, the filament stream is coagulated. silk strips.