| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 5207335 | Polymer Testing | 2009 | 9 Pages |
Abstract
The aim of this study is to investigate the effect of pH level and surface treatment of samarium oxide (Sm2O3), samarium borate (SmBO3) and Sb-doped SnO2 (ATO) particles on properties of peroxide-cured ethylene-propylene-diene rubber (EPDM) composites. The bis-(-3-(triethoxysilyl)propyl)tetra-sulfide (KH845-4) treated particles were added to EPDM at various filler contents. The pH values of particles, and cure, mechanical and electric properties of the EPDM composites were evaluated. It was found that alkaline SmBO3 particles would accelerate cure by producing more radicals from dicumyl peroxide (DCP), but acidic ATO particles would retard vulcanization because of making DCP generate less radicals, and neutral Sm2O3 particles did not affect the cure process. Moreover, sulfuric linkages from KH845-4 on the filler surface would provide sulfuric radicals to form S-C linkages. Therefore, composites with SmBO3 exhibited excellent mechanical properties. Additionally, polar fillers could reduce electrical properties of composites due to increased composite polarity.
Related Topics
Physical Sciences and Engineering
Chemistry
Organic Chemistry
Authors
Jun Su, Shuangjun Chen, Jun Zhang, Zhongzi Xu,