What are the advantages compared to ordinary plastic modified plastics?

The term "plastic modification" refers to a method of expanding the scope of its application by adding one or more other substances to the plastic resin to change its original performance and improve one or more aspects of performance. The modified plastic materials are collectively referred to as "modified plastics".

There are roughly the following types of plastic modification methods:

1. Enhancement: The purpose of increasing the rigidity and strength of the material by adding fibrous or flaky fillers such as glass fiber, carbon fiber and mica powder, such as glass fiber reinforced nylon used in electric tools.

2, toughening: through the addition of rubber, thermoplastic elastomers and other substances in the plastic to achieve its purpose of improving the toughness / impact strength, such as automotive, home appliances and industrial applications in the toughened polypropylene.

3. Blending: Mixing two or more incompletely compatible polymer materials into a mixture of macroscopic compatibility and microscopic phase separation to meet certain physical and mechanical properties, optical properties, processing properties, etc. The method required.

4, alloy: similar to blending, but the compatibility between components is good, easy to form a homogeneous system, and can obtain some properties that can not be achieved by a single component, such as PC / aBS alloy, or PS modified PPO.

5. Filling: The purpose of improving physical and mechanical properties or reducing costs by adding fillers to plastics.

6. Other modification: such as using conductive filler to reduce the resistivity of plastic; adding antioxidant/light stabilizer to improve the weather resistance of the material; adding pigment/dye to change the color of the material, adding internal/external lubricant to make the material The processing properties are improved, and the nucleating agent is used to change the crystallization characteristics of the semi-crystalline plastic to improve its mechanical properties and optical properties.

In addition to the above physical modification methods, there are also methods for modifying plastics by chemical reaction to obtain specific properties, such as maleic anhydride grafted polyolefin, cross-linking of polyethylene, and utilization of peroxides in the textile industry. The resin is degraded to improve fluidity/fibrilation properties and the like. . . Not all.

A variety of modification methods are often used together in the industry, such as adding a toughening agent such as rubber in the plastic reinforcement modification process without excessive loss of impact strength; or physical mixing in the production of thermoplastic vulcanizate (TPV). And chemical cross-linking, etc...

In fact, any plastic raw material contains at least a certain proportion of stabilizers at the factory to prevent its degradation during storage, transportation and processing. Therefore, "non-modified plastics" in the strict sense do not exist. However, in the industry, the base resin produced by the chemical plant is usually referred to as "unmodified plastic" or "pure resin".

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