Damping Properties of Novel Organic Hybrids of Carboxylated Nitrile Rubber and Hindered Phenols

摘要

In this paper, carboxylated nitrile rubber (XNBR) was chosen for the first time as matrix in organic hybrid systems and two novel organic hybrid systems based on XNBR were prepared. The damping properties of organic hybrids consisting of XNBR, 2,2'-Methylene bis(6-tert-butyl-4-methylphenol) (AO-2246), and Pentaerythrityl-tetrakis-[P(3,5-di-tert-butyl-4-hydr-oxylphenyl)-pro-pionate] (AO-1010) were investigated by DMA analysis. Binary XNBR/AO-2246 system was compatible and showed only one damping peak associated with XNBR, whereas binary XNBR/AO-1010 system was partly compatible and a new damping peak appeared besides that of XNBR. FT-IR measure-ments and SEM observation were carried out to clarify the molecular mechanism of the different additive effects of AO-2246 and AO-1010.