PP Granules Manufacturers Introduce Mineral Filled Modified PP Plastic Granules


Release time:

2022-09-29

PP particle manufacturers said that mineral filled modified PP plastic particles is a widely used modification method. PP raw materials added to the Chinese calcium carbonate, talc, wollastonite, glass beads, mica powder and other minerals. These different mineral resources not only we can to a certain extent can improve the mechanical system properties and impact toughness of PP materials, reduce the molding shrinkage of PP materials, enhance its dimensional stability, but also enterprises because of the huge cost of minerals and PP matrix, can be greatly reduced.

  PP granule manufacturersThe modified PP plastic particles have excellent comprehensive performance, good chemical stability and good molding processing performance. There are many kinds of modified PP plastic particles, each of which has a large number of applications in the field of home appliances. Next, I will take you to understand the application of mineral filled modified PP in household appliances.

PP particle manufacturers said that mineral filled modified PP plastic particles is a widely used modification method. PP raw materials added to the Chinese calcium carbonate, talc, wollastonite, glass beads, mica powder and other minerals. These different mineral resources not only we can to a certain extent can improve the mechanical system properties and impact toughness of PP materials, reduce the molding shrinkage of PP materials, enhance its dimensional stability, but also enterprises because of the huge cost of minerals and PP matrix, can be greatly reduced. Cost variance. Reduce the cost of PP materials.

  

PP颗粒厂家

  PP granule manufacturersThis paper introduces the application parts of mineral filled modified PP plastic particles in household appliances:

1. Parts such as inner drum, pulsator and clothing outlet of pulsator washing machine and drum intelligent washing machine;

2. Microwave oven sealing strip, bell mouth, horn bracket and refrigerator rack;

3. The shell and base of the rice cooker.

  PP granule manufacturersThe shrinkage control of PP plastics is a very important development aspect of PP modification, and good shrinkage control/control is of great theoretical significance to the promotion and use of polypropylene modification research materials. In particular, the application of modified polypropylene to replace traditional engineering plastics, its shrinkage is very important. In the process of modification, what are the factors that affect the shrinkage of PP plastic? The shrinkage of polypropylene is affected by its crystallinity, and the crystallinity is affected by its molecular weight.

1. Mineral filling

The research on mineral processing aids used in the modification of PP plastics mainly includes calcium carbonate, talcum powder, mica powder, etc., which have obvious influence on the shrinkage rate in the molding process of PP plastics. In three aspects, the mineral filler itself does not shrink, the addition of mineral filler reduces the shrinkage of polypropylene modified materials as a whole, and the addition of mineral filler affects the crystallinity of polypropylene; third, the addition of mineral filler plays the role of nucleating agent, changes the structure of polypropylene, increases the formation of spherulites and affects the shrinkage of polypropylene.

2. Glass fiber reinforced

PP particle manufacturers: glass and fiber reinforced PP plastic modification is an important technical means, glass fiber PP modified materials on the molding shrinkage rate has a great impact. When the glass fiber content is more than 30%, the shrinkage of PP is reduced from 1.8 to 0.5, and the effect of surface treated glass fiber on molding shrinkage is greater than that of untreated glass fiber. The addition of glass and fiber destroys the crystallinity of PP and affects the shrinkage rate of enterprises, while glass fiber can limit the crystallization temperature shrinkage rate of PP plastic.

3. Addition of polyethylene

PP particle manufacturers: polyethylene is also a high degree of crystallinity of plastic, its molding shrinkage is also very large.

4, PP plastic itself MI (melt index) changes.

  PP granule manufacturers: The shrinkage of polypropylene is affected by its crystallinity, which in turn is affected by its molecular weight. When MI increases, the molecular weight can be reduced, the crystallization reaction rate increases, and the molding shrinkage increases. The change of polypropylene MI also has a certain effect on the molding shrinkage.



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