The role of zinc stearate

The function of zinc stearate is to inhibit the thermal degradation reaction of PVC at high temperatures, reduce the generation of harmful gases, thereby improving the thermal stability of PVC.

PVC (polyvinyl chloride) is a plastic material widely used in the preparation of plastic products. Has excellent chemical resistance, weather resistance and mechanical properties. It is widely used in various fields such as construction, medical care, electronics, and automobile industry.

However, the thermal stability of PVC at high temperatures has always been a problem. As people's requirements for sustainable development and environmental protection continue to increase, it is particularly important to improve the thermal stability of PVC. In order to improve the thermal stability of PVC, zinc stearate is a commonly used heat stabilizer and is widely used in the preparation process of PVC.

Although zinc stearate has been used in the plastics industry for decades, there are still many issues regarding its synthesis method and performance impact that require in-depth study.

There are many methods for synthesizing zinc stearate, which can be divided into traditional methods and new methods according to different synthesis routes. The traditional synthesis method involves the reaction of stearic acid and zinc oxide, mainly including esterification reaction, hydrolysis and dehydration reaction.

The advantage of traditional synthesis methods is that the synthesis process is relatively simple, but there are disadvantages such as the generation of many by-products, low reaction yield, and poor environmental friendliness. In recent years, catalytic synthesis methods have become a new research focus, and organic catalysts or metal catalysts are usually used to achieve efficient reactions between stearic acid and zinc oxide.

The synthesis method and condition selection of zinc stearate will directly affect the performance and yield of the product. In the experiment, zinc chloride was used as a cat.

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