Synthesis and application of AN-g-EPDM and AA-g-EPDM as compatibilizers for CR/EPDM and NBR/EPDM rubber blends

摘要

The graft polymerization of acrylonitrile (AN) or acrylic acid (AA) onto ethylene-propylene-diene terpolymer rubber (EPDM) was carried out in toluene,using dibenzoyl peroxide (BPO) as an initiator.The synthesized AN-g-EPDM and AA-g-EPDM were characterized by FT-IR spectroscopy and thermal gravimetric analysis (TGA).AN-g-EPDM and AA-g-EPDM were incorporated into chloroprene rubber (CR)/EPDM and butadiene acrylonitrele rubber (NBR)/EPDM blends.The compatibility of EPDM/CR and EPDM/NBR blends was examined with scanning electronmicroscope (SEM) and differential scanning calorimetry(DSC).The physico-mechanical properties of the vulcanizates were investigated after and before thermal aging.AN-g-EPDM and AA-g-EPDM imporved the morpholog of CR/EPDM and NBR/EPDM rubber blends.The mechanical properties illustrate that the compatibilized blends possessed good thermal stability.