STUDY ON THE EFFECT OF COMBINATION OF BISFUN- CTIONAL HINDERED AMINE LIGHT STABILIZER (GW-540) AND UV-ABSORBERS

doi:10.7517/j.issn.1674-0475.1990.01.14

Imaging Science and Photochemistry ›› 1990, Vol. 8 ›› Issue (1): 14-21.DOI: 10.7517/j.issn.1674-0475.1990.01.14

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STUDY ON THE EFFECT OF COMBINATION OF BISFUN- CTIONAL HINDERED AMINE LIGHT STABILIZER (GW-540) AND UV-ABSORBERS

Pan Jiang-qing, Zhang Wei, Cui Song

Institute of Chemistry, Academia Sinica, Beijing 100080, P. R. China

Received:1988-06-18 Revised:1988-11-17 Online:1990-02-20 Published:1990-02-20

Abstract

Abstract: The photoprotecting action of combination of GW-540 (tri-1,2,2,6,6-penta-methyl-4-piperidinyl phosphite) and two UV absorbers (UV-531,UV-327) for polypropylene was studied by IR.,UV-spectrum,SEM.The results showed that the combination of GW-540 and UV-531 possess a good photoprotecting effectiveness,appears strong synergism,and the combination of GW-540 and UV-327 appears a weak antagonism.The results of UV-spectrum showed that GW-540 can protect both UV-531 and UV-327 against photolysis.The results of SEM showed that the more non-uniform dispersion of UV-327 in polypropylene matrix had been formed when GW-540 was added in.The mechanisms of synergism (GW-540——UV-531) and antagonism (GW-540——UV327) were proposed.

Key words: hindered amine light stabilizer, polypropylene, synergism of additives, piperidine stabilizer, UV-absorbers

Pan Jiang-qing, Zhang Wei, Cui Song. STUDY ON THE EFFECT OF COMBINATION OF BISFUN- CTIONAL HINDERED AMINE LIGHT STABILIZER (GW-540) AND UV-ABSORBERS[J]. Imaging Science and Photochemistry, 1990, 8(1): 14-21.

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STUDY ON THE EFFECT OF COMBINATION OF BISFUN- CTIONAL HINDERED AMINE LIGHT STABILIZER (GW-540) AND UV-ABSORBERS

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