Plasticizers play a decisive role in promoting the development of the plastics industry, especially the polyvinyl chloride industry. The following is a summary of the factors affecting plasticizers.
First, the factors affecting the plasticizer (crude ester) flash point The full flash of the dibasic acid plasticizer is related to the molecular weight. The molecular weight is high and the flash point is also high: but the molecular weight is too high, and the plasticizer has poor compatibility with PVC. If the molecular weight is low, the flash point is also low; if the molecular weight is too low, the plasticization effect will be poor and it will not be durable.
Second, the factors affecting the plasticizer (primary ester) acid value There are unreacted acid acids and their monoesters (acid esters), acidic catalysts and their esters, the water is not completely washed and the residual acid and off Acids or monoesters that occur due to thermal differentiation during the alcohol process, which affect the acid value of the product to the same extent.