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A widely used powder surface treatment agent-coupling agent
Release Date:
2024-09-14
Surface treatment modification
In the plastic processing and development and development process, filling modification technology is more and more widely used. The addition of certain amount of inorganic fillers to the polymer can reduce the cost and strengthen the plastic products without affecting the quality of the plastics, and at the same time endows the plastic products with various excellent properties and special functions, therefore, the application scope of plastics is expanded.
At present, there are many kinds of inorganic fillers used in plastics, such as calcium carbonate, carbon, cellulose, silicate, silicon dioxide, oxide, metal powder, etc. . The content of fillers usually accounts for 5-80% of the composite system.
Due to the type, shape, surface structure of inorganic fillers and interface state between polymers, it has a great influence on the processability and serviceability of the filling conformance system. Therefore, it is necessary to treat the surface of inorganic fillers to improve their application effect in plastics.
Second, the action mechanism of the coupling agent, the coupling agent in improving the performance of composite material is remarkable, from the actual application of its action mechanism induction: Improve the compatibility of resin and inorganic matter, to form a chemical bond between a resin and an inorganic substance.
Coupling agent can also be called special surface treatment agent, in fact, it is a kind of organic material to increase the affinity between inorganic fillers and organic polymers, if not treated by coupling agent, they will cause phase separation, by coupling agent treatment, can make the surface of the filler hydrophilicity into hydrophilicity.
Coupling agents bind the fillers to the polymer by physical winding or chemical bonding to achieve good mechanical strength, on the other hand, the agglomeration phenomenon and the size of agglomeration particles have been significantly improved after the treatment of inorganic fillers, the processing performance and product strength are greatly improved.
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