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The Thermal Stabilization Effect of Biphenol Monoacrylate on Polyoxymethylene

State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute of Sichuan University, Chengdu, China

^* To whom correspondence should be addressed. E-mail: yelinwh{at}126.com.

	Abstract

Biphenol monoacrylate (BMA) was applied to be combined with the traditional hindered phenolic-based binary antioxidant system to form the ternary antioxidant system for the purpose of further improving the thermal oxidative stability of polyoxymethylene (POM). The thermal stabilization effect of BMA on POM was studied by the measurements of isothermal and nonisothermal degradation, formaldehyde emission amount, and balance torque. The thermal stability of the stabilized POM under multiple processing and long-term aging was further studied in comparison with the commonly used antioxidant Irganox245. The results showed that the antioxidant BMA can improve the thermal stability of POM effectively through a unique bifunctional stabilizing mechanism, and much low content of BMA-based ternary antioxidant system can reach the same level of thermal stabilization effect on POM as with Irganox245, which can replace Irganox245 to be applied in the production of POM due to its low dosage and low production cost.

First published on September 9, 2009
Journal of Thermoplastic Composite Materials 2009, doi:10.1177/0892705709345943


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