Preparation of rare earth complex heat stabilizer for PVC plastics

Study on rare earth compounds used as heat stabilizer begins sometime in the 80, it is thermally stable than SOAP-SOAP-barium, cadmium and their compounds good significantly improved weatherability, transparency, not bound by sulfide pollution, non-toxic characteristics (1~3). Rich rare earth resources in China, making full use of rare earth resources in China, development suited to China's national conditions of PVC heat stabilizers are of great practical significance. We synthesize a series of rare earth, have found an excellent thermal stability effect of stabilizer.

Conclusions 1. the laboratory preparation of rare-earth stearate, Dan Yuegui acid rare earth and rare earth, double lauric acid, citric acid, Malic acid rare earth, and determination of their chemical and physical properties.

2. determination of the thermal stability of rare earth and calcium stearate and compares organic Tin TM-181, order their thermal stability for measurement: organotin > Malic acid rare earth > citric acid rare earth > rare-earth stearate > double-lauric acid rare earth, calcium stearate > lauric acid rare earth > rare-earth naphthenate.

3. the phosphite-re-Zn system has very good synergies, by orthogonal test found that factors affecting order: phosphite > zinc stearate, Malic acid rare earth > epoxy soybean oil, including rare-earth heat stabilizer extension factors affecting order in advance with time, rare earth zinc-composite system for rare earth zinc =5:1.


Rare Earth Supplier: Chinatungsten Online - http://www.chinatungsten.com
Tel.: 86 592 5129696; Fax: 86 592 5129797
Email:  sales@chinatungsten.com
Tungsten & Molybdenum Information Bank: http://i.chinatungsten.com
Tungsten News & Tungsten Prices, 3G Version: http://3g.chinatungsten.com
Molybdenum News & Molybdenum Price: http://news.molybdenum.com.cn

• < Prev
• Next >