Introduction to the performance characteristics of polyvinyl chloride pvc
2. Hard polyvinyl chloride pvc is made with only a small amount of plasticizer. It is characterized by hard texture, high mechanical strength and good chemical corrosion resistance.
3. Polyvinyl chloride pvc plastic has poor heat resistance, and its strength is greatly affected by temperature. The strength at -20°C is 80% lower than that at 20°C. Therefore, film products are not easy to be stored and used at low temperature; the use temperature of soft products does not exceed 45 °C, and the temperature of hard products does not exceed 60 °C, which will age and become brittle when exposed to light for a long time.
4. During the processing of polyvinyl chloride pvc film, in order to prevent thermal decomposition, a heat stabilizer needs to be added. Since the heat stabilizer contains lead salts, etc., the polyvinyl chloride plastic is toxic, so it cannot be used as food packaging.