Research on PVC Production Process and Modification Methods
Polyvinyl chloride(PVC)has very good acid and alkali resistance,corrosion resistance,flame retardant and electrical insulation,and PVC processing performance is good and production cost is low,so it is widely used in wire and cable,medical equipment,toys,food packaging and building materials.PVC products in the process of processing usually need to add a lot of plasticizer to improve its performance.A series of problems such as volatilization may occur in the long term use of plasticizer,which will not only cause degradation of product performance,but also cause certain toxicity to the environment and human body.In recent years,the strategy of covalently connecting plasticizer to PVC molecular chain by chemical modification to avoid plasticizer migration has become a research hotspot.In this paper,the properties and application fields of PVC were reviewed,and the research progress of PVC modification methods in recent years was highlighted.
NETL
NSTL
万方数据
