What is the difference between polypropylene yarn granule raw material and polypropylene shale raw material
What is the difference between polypropylene yarn granule raw material and polypropylene shale raw material?
When it comes to polypropylene, pellets and powders are thought of. There is a certain substitution between them. From the performance and inferiority, the comprehensive performance of pellets is better than that of powders. At the price, the pellets are also high, and the pellets are mostly produced by integrated devices. The source of propylene is stable, the production is continuous, the product has stable melting index and good appearance; in addition, the powder does not add any additives during the production process, so its The products are inferior to the pellets in terms of sun protection and weather resistance. Both PP pellets and powders belong to PP, and the direct raw materials of both are propylene monomers, which can be described as the same roots. There are obvious differences between the pellets and the powder. First, the physical presentation of the two materials is different. One is granular and the other is powdery. Secondly, the scope of application is different, and the range of pellets is wide. In addition to low-end plastic knitting and injection molding, Can be widely used in automotive, film and other industries, and powder is mostly used in the low-end plastic products industry. Of course, the two are more closely related. First of all, there is a certain overlap between the two downstream, especially in the field of plastic knitting, there is a strong competitive relationship between the two; secondly, the powder and the pellet are in the middle of a granulation process. It is precisely because of the above two points that the price trend of PP pellets is extremely consistent, and there is a certain reasonable price difference.