| Effect of Epoxidized Natural Rubber on Properties of NR/NBR Damping Material |
| Received:May 10, 2017 Revised:May 10, 2017 |
| DOI： |
| Key Words: epoxidized natural rubber；NR；NBR；physical property；damping property |
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| Abstract: |
| The effects of epoxidized natural rubber（ENR-40） on the comprehensive properties of natural rubber（NR）/nitrile butadiene rubber（NBR） damping material were investigated.The results showed that，as the addition level of ENR-40 increased，the maximum torque，minimum torque and their difference value of the blend increased，and the scorch time and optimum curing time were slightly extended；the tensile strength and elongation at break of the blend increased at first and then decreased；the tear strength and modulus gradually increased，the hardness remained constant，and rebound value decreased slightly；the compression permanent set and fatigue temperature rise decreased，the hysteresis energy density and damping coefficient increased；DMA test results showed the loss peaks of two phases were closed to each other，the peak value of loss factor and loss modulus of NR gradually decreased，and the peak value of loss fator and loss modulus of NBR increased. |
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