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Stabilizer comparison exterior PVC profile applications
Author(s) -
Weiler Robert G.
Publication year - 1984
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.730060406
Subject(s) - stabilizer (aeronautics) , carboxylate , barium , lubrication , tin , materials science , titanium dioxide , chemical engineering , chemistry , composite material , organic chemistry , metallurgy , mechanical engineering , engineering
This paper compares the performance of Estertin mercaptide, alkyltin mercaptide, barium/cadmium carboxylate, inorganic lead, and organotin carboxylate PVC heat stabilizers for exterior PVC profile applications. These stabilizers were all evaluated for heat stability performance, exterior and accelerated weatherability, and lubrication and processability. Since their lubrication characteristics vary greatly, several formulation modifications were employed including European and U.S. types. While all stabilizers could be processed acceptably into exterior rigid profiles, with the possible exception of the tin carboxylate, the Estertin mercaptide and the alkyltin mercaptide exhibited fewer processing difficulties. The barium/cadmium carboxylate provided the best weatherability at low titanium dioxide loadings. At high titanium dioxide loadings, only small differences could be detected between all types of stabilizers evaluated.