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The mechanical function of PVC products is not ideal, the processing is unstable, and then the cost is increased because of the poor compatibility of the multiphase system of PVC products.

At the same time, stearic acid, titanate coupling agent and aluminate coupling agent were used to modify the inorganic fillers to change the lipophilicity of the inorganic phase, but the multiphase balance and compatibility of the PVC system were not fundamentally changed. Long term industrial application indicated that there would be defects:

① high viscosity of processed melt;

② inorganic fillers and pigments have poor dispersibility in organic polymers;

③ the lipophilic chain of traditional coupling agent has poor compatibility with the phases of PVC system, which greatly reduces the impact toughness and strength of the composite.

The application of special additives for PVC engineering plastics can effectively disperse inorganic powders and pigments, and effectively reduce the surface tension of phases in PVC multiphase chaotic system; Eliminate the micro interphase micro crack and interphase stress caused by poor interphase compatibility in PVC multiphase disordered system, and greatly improve the mechanical function of PVC composites; Efficient integration of PVC multiphase system to improve PVC processing function and appearance luster of PVC products; Greatly improve the filling amount of inorganic powder in PVC Composites by 50% ~ 100%, ensure good product quality, and greatly reduce enterprise costs.

In a word, the use of PVC engineering plastics special additives in the formulation of PVC products is extremely flexible, which can greatly improve the impact toughness and strength of PVC products without changing the original formulation; Inorganic fillers can also be added to the original formula by 50% ~ 100%. On the basis of ensuring product quality, the enterprise cost can be reduced by 3% ~ 8%. Users can choose according to their needs.

The article comes from PVC Engineering Plastics:http://www.hhaifeng88.cn/