Rare Earth Stearates as Thermal Stabilizers for Rigid Poly(vinyl chloride)

稀土学报(英文版), 2005, 23(2): 172-177.

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1.College of Chemistry and Chemical Engineering, Fuzhou University, Fuzhou 350002, China

2.College of Chemistry and Chemical Engineering, Fuzhou University, Fuzhou 350002, China

3.College of Chemistry and Chemical Engineering, Fuzhou University, Fuzhou 350002, China

4.College of Chemistry and Chemical Engineering, Fuzhou University, Fuzhou 350002, China

5.College of Chemistry and Chemical Engineering, Fuzhou University, Fuzhou 350002, China

基金项目: the Science and Technology Fund of Three Projects of Fujian Province(K2002009) the Planning Commission of Fujian Province, Count Investment in Fujian(161)

Rare Earth Stearates as Thermal Stabilizers for Rigid Poly(vinyl chloride)

Keywords： poly(vinyl chloride)

A series of stearates with different rare-earth ion were investigated as thermal stabilizers for rigid PVC at 180 ℃ in air. Their stabilizing efficiency was based on measuring the rate of dehydrochlorination. The resulted revealed the higher stabilizing efficiency of the investigated rare-earth stearates as thermal stabilizers for rigid PVC compared with the thermal stabilizers for industry: calcium stearate, zinc stearate, butyl stannum mercaptide, phosphite esters, β-diketone and epoxidized sunflower oil. This was well illustrated by longer incubation period (TS) values and lower rate of dehydrochlorination. The stable efficiency was affected by the nature of rare-earth element's individual electronic shell. The mechanism for the stabilizing effect of rare-earth stearates was proposed. The result was experimentally proved based on IR spectrum.

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Rare Earth Stearates as Thermal Stabilizers for Rigid Poly(vinyl chloride)

参考文献