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[Chemical Knowledge]：The difference between polypropylene powder and pellets

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Polypropylene powder and pellets are common plastic raw materials in modern industry, and there are some differences in production process, property differences and application fields. This article will compare these two materials to help you better understand their characteristics and uses.

different processes for the production of polypropylene powder and pellets. Polypropylene powders are usually produced by low or high pressure polymerization, while polypropylene pellets are produced by a melt extrusion process. Due to the different production processes, polypropylene powder and pellets are also different in morphology. The polypropylene powder appears as a white or yellowish powder, while the polypropylene pellets are granular.

polypropylene powder and pellets also have some differences in physical properties. Polypropylene powder has high fluidity and uniform particle size distribution, and can be used in molding, extrusion, blow molding and other processing processes. Polypropylene pellets, on the other hand, exhibit high heat resistance and impact resistance and are widely used in the fields of injection molding and plastic film making. In addition, due to the large surface area of polypropylene powder, moisture absorption is also relatively strong, need to be dried. The application areas of

polypropylene powders and pellets are also different. Because polypropylene powder is more suitable for various processing technologies, it is widely used in the production of plastic products, such as various household appliances, beverage packaging boxes, etc. Polypropylene pellets are widely used in the field of injection molding products and plastic films, such as food packaging bags, water pipes, etc.

In summary, there are some differences between polypropylene powder and pellets in terms of production process, physical property differences and application fields. Understanding these differences can help us to better select and apply these two materials, improve production efficiency and product quality. I hope this article can bring some help and inspiration to readers.

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