| Effect of C5 Petroleum Resin Dosage on Properties of NR Compound |
| Received:November 04, 2022 Revised:December 11, 2022 |
| DOI：10.12136/j.issn.1000-890X.2024.07.0523 |
| Key Words: NR；C5 petroleum resin；physical property；damping property |
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| Abstract: |
| Effect of C5 petroleum resin dosage on properties of natural rubber（NR） compound was studied.The results showed that，with the increase of C5 petroleum resin dosage，the Shore A-type hardness，tensile strength，elongation at break and crosslinking density of NR compound decreased，but the elongation at break of NR compound with 40 phr of C5 petroleum resin still reached 654%，indicating that its elasticity remained good.The tanδ-temperature curve of NR compound with C5 petroleum resin only showed a single loss peak，indicating good compatibility between C5 petroleum resin and NR.With the increase of C5 petroleum resin dosage，the tanδ peak value of NR compound decreased，the glass transition temperature moved towards higher temperature direction，effective damping temperature range was widened，so that the damping property was significantly improved.The cross-section of NR compound without C5 petroleum resin was relatively rough，the cross-section of NR compound with C5 petroleum resin was smoother. |
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