Mullins Effect and Its Reversibility of Thermoplastic Vulcanizates Based on Polypropylene/Ethylene-Propylene-Diene Terpolymer Blends Under Compression Mode

作者：Zhang, Jikai; Zhang, Kai; Gao, Liangliang; Wang, Zhaobo^*

来源：Polymer - Plastics Technology and Engineering, 2017, 56(8): 906-916.

DOI：10.1080/03602559.2016.1247275

• EPDM
• Mullins effect
• PP
• reversibility
• thermoplastic vulcanizate

Mullins effect and its reversibility of ethylene-propylene-diene terpolymer/carbon black vulcanizate and polypropylene/ethylene-propylene-diene terpolymer thermoplastic vulcanizate under compression mode were investigated systematically. Morphology studies showed that sphere-like ethylene-propylene-diene terpolymer particles were dispersed evenly in the etched thermoplastic vulcanizate surface with diameter of 5-7 mu m. The results showed that thermoplastic vulcanizate demonstrated characteristic features (hysteresis of energy, residual deformation accumulation, stress softening) of Mullins effect. Compared with that of ethylene-propylene-diene terpolymer/carbon black vulcanizate, the polypropylene/ethylene-propylene-diene terpolymer thermoplastic vulcanizate had much higher stress and its stress softening phenomenon was more obvious. The reversibility of Mullins effect showed a temperature-dependent feature and was enhanced with increasing temperature. @@@ [GRAPHICS] @@@ .

• 出版日期2017
• 单位青岛科技大学