Analysis of PVC plastic heat stabilizer development of rare earth complex situation

Thermal rare earth compound as the stabilizer began 1980s , it has a thermal stability than barium soap , cadmium soap , and their mixtures , good weatherability is remarkably improved transparency, sulfur contamination from toxic etc. [ 1-3 ] . China is rich in rare earth resources, make full use of China's rare earth resources, the development of China's national conditions of PVC heat stabilizers has great practical significance. We synthesized a series of rare earth compounds , found an excellent heat stabilizing effect of a stabilizer .Wholesale masking tape

Conclusion 1, the experimental preparation of a rare earth stearate , monolaurate rare earth, rare earth double lauric acid, citric acid and malic acid rare earth, and determination of their physicochemical properties .Washi tape

2 , the determination of the thermal stability of rare earth and calcium stearate and organotin TM-181 were compared , measured in the order of their thermal stability : organotin > malic Rare > citric Rare > Stearyl rare acid > lauric earth, calcium stearate > monolaurate rare > naphthenic rare .Masking tape

3 , phosphite - Rare - zinc composite system has good synergy factors found by orthogonal test order: phosphite > zinc stearate, malic acid RE > epoxy soybean oil , of which the thermal stability of rare earth agents with time factors order to extend the advance ; rare - zinc complex system with ratio of RE : Zn = 5:1.Sellotape