Chem. J. Chinese Universities ›› 1995, Vol. 16 ›› Issue (7): 1146.

• Articles • Previous Articles    

Studies on Photoaging Properties of Calcium Carbonate Filled Polyethylene

SHEN Jing-Wei, LIU Yue-Jian   

  1. Department of Plastics Engineering, Sichuan Union University, Chengdu, 610065
  • Received:1994-08-02 Revised:1995-01-29 Online:1995-07-24 Published:1995-07-24

Abstract: Photoaging properties of calcium carbonate (CaCO3) filled polyethylene(PE) were investigated by means of artificial photoaging test. Photoaging qualities were characterized by the change of carbonyl concentration and double bond optical density with luminous flux with the aid of FTIR. It is showed that the photoaging behavior of CaCO3filled plastics relates to metallic impurities in the filler, filler content, environment temperature etc.. Degradation with photoaging can be restrained by adding a little proper light stabilizer.

Key words: Calcium carbonate, Polyethylene, Photoaging, Carbonyl, Double bond

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