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Non‐cadmium stabilizers for flexible PVC
Author(s) -
Weiler Robert G.
Publication year - 1982
Publication title -
journal of vinyl technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.295
H-Index - 35
eISSN - 1548-0585
pISSN - 0193-7197
DOI - 10.1002/vnl.730040112
Subject(s) - cadmium , stabilizer (aeronautics) , materials science , heat resistance , chemistry , chemical engineering , composite material , mechanical engineering , engineering , metallurgy
Organo‐metallic complexes containing cadmium are highly efficient heat and light stabilizers for flexible PVC. Recent toxicity studies and, more importantly, governmental reaction to these studies, places continued use of cadmium in vinyl heat and light stabilizers in possible jeopardy. The purpose of this paper is to study ways of replacing cadmium in liquid stabilizers for flexible PVC. The paper describes a practical study of stabilization using performance criteria such as static and dynamic heat stability and accelerated weathering resistance. It defines the performance of current typical‐type stabilizers that contain cadmium. These will be performance‐compared with non‐cadmium‐containing versions of the same stabilizers. Based on these results, a theory for cadmium stabilization will be developed and used in the design of a new set of noncadmium‐containing stabilizers that show performance characterisitics nearly equal with the cadmium‐ containing stabilizers.