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2022-03-12
The main purpose of adding fillers to plastics:
1. Improving the processing and material properties of plastics:
for example, improving the dimensional stability, heat resistance, hardness, weatherability,
flame retardancy, aesthetics,fluidity, strength and stiffness of products.
2.Reduce cost
Compared with pure plastics, the price of filler is generally very low. Adding filler can greatly
reduce the cost of plastics products.
Fillers are divided into two main categories
1,A kind of filler with the main purpose of increasing the volume of plastics and reducing cost
of products,it is also called incremental agent. Cheap filler not only reduces the cost of plastic
products, improves the utilization of resin, but also enlarges the application scope of resin.
Moreover, the application of some fillers can also give or improve some specific properties
of products, such as dimensional stability, rigidity, shading and electrical insulation
2.Another kind of filler is mainly used to increase the strength and mechanical properties of
plastic products, also called as reinforcing agent, which can significantly improve the mechanical
properties of plastic products, generally fibrous materials or their fabrics. Generally speaking,
the mechanical strength of plastics, such as impact strength, modulus of elasticity and rigidity,
can be doubled by adding a proper amount of reinforcing materials to the resin. At the same
time, the dimensional stability of the products can be improved, the shrinkage rate can be
reduced, and the thermal deformation can be reduced.
Plastic fillers include inorganic fillers (such as calcium carbonate, clay, talc, diatomite, silica,
mica powder, asbestos, metal, metal oxides, etc.) and organic fillers (such as thermosetting
resin hollow spheres, wood powder, powder cellulose, etc.).
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