PERFORMANCE AND MECHANISMS OF HINDERED AMINE LIGHT STABILIZERS IN POLYMER PHOTOSTABILIZATION

A. J. Padrón
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引用次数: 18

Abstract

Abstract Hindered amine light stabilizers (HALS) have probably been the most studied compounds in the field of polymer stabilization overthe past 15 years [1–16]. Their excellent performance in polyolefins [1–8], poly(vinyl chloride) [9], polystyrene [10], rubbers [11], polyamides [12], and other polymers such as acrylic resins 113–161 has made them an attractive item for research. There have been many advances regarding the understanding of the nature of the stabilization mechanism of these compounds, and there is still a great amount of controversy particularly with regard to the relative importance of some reactive intermediates [1–16]. This continuing research has led to the development of some novel compounds which are more efficient and have better compatibility with the polymer [1–16]. This article reviews the current understanding of the mechanism of action of HALS, its relationship with their performance in polymers, and their interaction with other additives used in a given stabilization system....
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受阻胺光稳定剂在聚合物光稳定中的性能和机理
受阻胺光稳定剂(HALS)可能是过去15年来在聚合物稳定领域研究最多的化合物[1-16]。它们在聚烯烃[1-8]、聚氯乙烯[9]、聚苯乙烯[10]、橡胶[11]、聚酰胺[12]和其他聚合物(如丙烯酸树脂113-161)中的优异性能使它们成为一个有吸引力的研究项目。在对这些化合物的稳定机制的本质的理解方面已经取得了许多进展,但仍然存在大量的争议,特别是关于一些活性中间体的相对重要性[1-16]。这种持续的研究导致了一些新的化合物的发展,这些化合物效率更高,与聚合物的相容性更好[1-16]。本文综述了目前对HALS的作用机制的理解,它与聚合物中的性能的关系,以及它们与特定稳定体系中使用的其他添加剂的相互作用....
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