Effect of N-Phenyl-p-Phenylenediamine Modified Vegetable Oils on Properties of ENR/PP Thermoplastic Vulcanizates: A Comparative Study

摘要

This research focuses on feasibility study of using N-phenyl-p-phenylenediamine modified vegetable oils as processing oil in the blend formulation of epoxidized natural rubber (ENR)/polypropylene (PP) thermoplastic vulcanizates (TPVs). Effect of N-phenyl-p-phenylenediamine modified vegetable oils on tensile and dynamic mechanical properties of the ENR/PP TPVs was investigated. For a comparison purpose, vegetable oils, epoxidized vegetable oils, and white oil were selected and also used in our experiment. Results show that all types of processing oils used in this study did not give the TPVs with significantly different values of tensile strength. The TPVs with petrochemical based white oil obviously provided the best elongation at break and tension set. However, the ENR/PP TPV with N-phenyl-p-phenylenediamine modified palm oil (pA-m-EPO) showed elastomeric properties (higher storage modulus together with lower tension set, tanδ and complex viscosity) superior than those of other oil extended TPVs. This means that the pA-m-EPO performed good compatibility with the TPV and had good distribution in the ENR molecules.