TY - JOUR
T1 - Comparison of cure, mechanical, electric properties of EPDM filled with Sm2O3 treated by different coupling agents
AU - Su, Jun
AU - Chen, Shuangjun
AU - Zhang, Jun
AU - Xu, Zhongzi
PY - 2009/5
Y1 - 2009/5
N2 - Composites based on ethylene-propylene-diene rubber (EPDM) were prepared. EPDM was reinforced with 100 phr Sm2O3 treated with coupling agents: stearic acid (SA), isopropyl tri(dioctylphosphate) titanate (NDZ102), bis-[-3-(triethoxysilyl)propyl]tetrasulfide (KH845-4), and N-β-(aminoethyl)-γ-aminopropylmethyldimethoxysilane (SG-Si602), respectively. Cure, mechanical and electrical properties of the composites were investigated. It was found that carboxyl in coupling agents could retard EPDM cure while amino groups, P{double bond, long}O bonds and S atoms could accelerate EPDM cure. Amino groups enhanced composite mechanical properties by forming additional rigid C-C linkages, whilst S atoms boosted composite mechanical properties by generating flexible S-C linkages. P{double bond, long}O bonds might be subject to cleavage during vulcanization and form flexible P-C linkage. Thus, composites with NDZ102 and KH845-4 treated filler exhibited better mechanical properties than that with SG-Si602 treated filler. In addition, treatment of filler could reduce composite electrical properties due to interfacial improvement.
AB - Composites based on ethylene-propylene-diene rubber (EPDM) were prepared. EPDM was reinforced with 100 phr Sm2O3 treated with coupling agents: stearic acid (SA), isopropyl tri(dioctylphosphate) titanate (NDZ102), bis-[-3-(triethoxysilyl)propyl]tetrasulfide (KH845-4), and N-β-(aminoethyl)-γ-aminopropylmethyldimethoxysilane (SG-Si602), respectively. Cure, mechanical and electrical properties of the composites were investigated. It was found that carboxyl in coupling agents could retard EPDM cure while amino groups, P{double bond, long}O bonds and S atoms could accelerate EPDM cure. Amino groups enhanced composite mechanical properties by forming additional rigid C-C linkages, whilst S atoms boosted composite mechanical properties by generating flexible S-C linkages. P{double bond, long}O bonds might be subject to cleavage during vulcanization and form flexible P-C linkage. Thus, composites with NDZ102 and KH845-4 treated filler exhibited better mechanical properties than that with SG-Si602 treated filler. In addition, treatment of filler could reduce composite electrical properties due to interfacial improvement.
KW - Coupling agents
KW - Cure properties
KW - Electric properties
KW - Ethylene-propylene-diene rubber
KW - Mechanical properties
UR - http://www.scopus.com/inward/record.url?scp=63649094125&partnerID=8YFLogxK
U2 - 10.1016/j.polymertesting.2008.11.015
DO - 10.1016/j.polymertesting.2008.11.015
M3 - 文章
AN - SCOPUS:63649094125
SN - 0142-9418
VL - 28
SP - 235
EP - 242
JO - Polymer Testing
JF - Polymer Testing
IS - 3
ER -