Citation: Guang-jun Cui, Shi-wei Wang, Peng-gang, Yin Lin Guo. Study of Viscoelastic Properties of White Carbon Black Reinforced Synthetic Polyisoprene[J]. Chinese Journal of Polymer Science, ;2016, 34(4): 457-465. doi: 10.1007/s10118-016-1765-9 shu

Study of Viscoelastic Properties of White Carbon Black Reinforced Synthetic Polyisoprene

1.
Key Laboratory of Bio-Inspired Smart Interfacial Science and Technology of Ministry of Education, School of Chemistry and Environment, Beihang University, Beijing 100191, China

Received Date: 19 October 2015
Revised Date: 3 December 2015

Fund Project: This work was financially supported by the National Basic Research Program of China (No. 2010CB934700).

The viscoelastic properties of synthetic polyisoprenes (PI) reinforced by white carbon black (WCB) have been investigated and compared with WCB reinforced natural rubber (NR), including cure characteristics, physio-mechanical and dynamic mechanical properties. Compared with NR, PI loaded with the same amount of WCB (PI/WCB) exhibited shorter scorch time and optimal cure time, indicating that WCB fillers are comparatively easier to conjugate with PI. The tensile strength and elongation at break decreased with WCB filling in both PI and NR vulcanizates. The hardness of the rubber vulcanizates increased with the WCB filling in the rubber matrix. PI/WCB blends exhibited smaller hardness data, lower tensile strength, as well as lower elongation at break and tensile stress. Increasing the amount of WCB in rubber matrix induced the Payne effect. However, the Payne effect is much more obvious for the PI/WCB system, and PI/WCB also displayed higher storage modulus whereas lower loss modulus and loss tangent than NR/WCB, which could all be attributed to the poor dispersibilities of WCB in the PI matrix.
- Reinforcement,
- White carbon black,
- Synthetic polyisoprene,
- Natural rubber,
- Viscoelastic properties,
- Payne effect
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沈阳化工大学材料科学与工程学院沈阳 110142