Norbornylized soybean oil as a sustainable new plasticizer for rubbers with hybrid fillers

作者：Li Jiaxi; Isayev Avraam I^*; Ren Xiaofeng; Soucek Mark D

来源：Polymer International, 2017, 66(6): 820-829.

DOI：10.1002/pi.5321

• soybean oil
• carbon black
• silica
• hybrid filler
• SBR

Carbon black (CB) and precipitated silica are two major reinforcing fillers in rubbers. CB/silica hybrid filler is also widely used in rubbers to provide balanced properties. CB/silica-hybrid-filler-filled styrene-butadiene rubber (SBR) containing naphthenic oil (NO), soybean oil (SO) and norbornylized SO (NSO) was investigated. The swelling and curing behavior and rheological, mechanical, thermal, aging and dynamic properties were studied and compared with earlier reported data on CB-or silica-filled SBR. NSO provides better scorch safety and faster cure than SO. Compared with NO, the addition of SO and NSO enhances the thermal stability and aging resistance of SBR vulcanizates. SBR/NSO vulcanizates with hybrid filler exhibit a higher tensile and tear strength than SBR/NO and SBR/SO vulcanizates. A synergistic effect in the abrasion resistance of vulcanizates containing the hybrid filler is observed. An increase of sulfur content in the hybrid-filler-filled SBR/NSO vulcanizates provides further improvement in abrasion resistance, wet traction and rolling resistance.

• 出版日期2017-6