PVC is a plastic which has excellent physical chemical properties with low cost rich raw materials. PVC can be used in extrusion, calendaring, injection blowing etc.. PVC is unstable under the process temperature, which will degrade quickly without stabilizer. The conditions of process greatly change the degradation speed of PVC materials. Each additive which interferes gelation of PVC, overheating friction of metal surface can influence degradation indirectly. That’s why agent lubricant are needed.
Heat stabilizer is indispensible in PVC formula:
To avoid the off of HCL from PVC materials
To avoid the colof PVC materials change (become yellow, black etc. )
According to the final usage of products, make the materials stable to enable PVC process at high temperature to be available.
Stabilizer aims to avoid the loss of HCL. The choose of stabilizer is up to its application (transparency, food contact, weather endurance etc.). Tin stabilizer is recognized as the most effective one with wide application among the three types of stabilizers in the market.
