1. Improve processing performance: Styrene processing aids can promote the melting process of PVC, increase the viscoelasticity of the melt, thereby improving the processing performance of PVC, making it easier to plasticize and shape

2. Improving product quality: By improving the rheological and mechanical properties of PVC melt, styrene processing aids help reduce residual stress and anisotropy in the product, and enhance the surface glossiness and appearance quality of the product

3. Enhance lubricity: Some components in styrene processing aids can migrate to the surface of PVC products, forming micro layers that act as external lubricants, reducing mold adhesion and improving demolding performance

In summary, styrene processing aids play an important role in PVC products, significantly improving the processing performance and product quality of PVC. 

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