| 天然橡胶/杜仲胶并用胶的性能研究 |
| Study on Properties of NR/EUG Blend |
| 投稿时间：2022-05-16 修订日期：2022-05-16 |
| DOI：10.12136/j.issn.1000-890X.2022.12.0899 |
| 中文关键词: 天然橡胶 杜仲胶 并用胶 白炭黑补强 拉伸性能 裂纹扩展速率 抗切割性能 压缩生热 |
| 英文关键词: NR EUG blend silica reinforcement tensile property crack growth rate cutting resistance compression heat build-up |
| 基金项目: |
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| 中文摘要: |
| 将天然橡胶（NR）与杜仲胶（EUG）并用，研究NR/EUG并用比对NR/EUG并用胶（未加补强剂）和白炭黑补强NR/EUG并用胶性能的影响。结果表明：随着EUG用量的增大，NR/EUG并用胶的EUG岛相结构的占比和尺寸增大，表面的“山脊状”纹路越明显；NR/EUG并用比为80/20的NR/EUG并用胶的拉伸强度最大，为28.8 MPa，裂纹扩展速率最小，为23.5 nm·c-1；NR/EUG并用比为70/30的NR/EUG并用胶的拉伸疲劳次数最大，为200万。随着EUG用量的增大，白炭黑补强NR/EUG并用胶的邵尔A型硬度、撕裂强度和储能模量增大，拉伸永久形变减小；NR/EUG并用比为85/15的白炭黑补强NR/EUG并用胶的切割量较小，压缩温升最低，阿克隆磨耗量最小。 |
| 英文摘要: |
| In this study，the blends of natural rubber（NR） and eucommia ulmoides （EUG） were
prepared，and effects of NR/EUG blend ratios on the properties of NR/EUG blend（without filler） and silica
reinforced NR/EUG blend were studied. The results showed that，the proportion and size of EUG island
structure of the NR/EUG blend increased with the increase of EUG amount，and the “ridge” lines on the
surface of the NR/EUG blend became more distinct. The tensile strength of the NR/EUG blend with NR/
EUG blend ratio of 80/20 was the largest，which was 28. 8 MPa，and the crack growth rate was the smallest，
which was 23. 5 nm·c-1. The NR/EUG blend with 70/30 NR/EUG blend ratio had the best tensile fatigue
resistance，reaching 2 million fatigue cycles before failure. Moreover，with the increase of EUG amount，the
Shore A hardness，tear strength and storage modulus of the silica reinforced NR/EUG blend increased，and
the tensile set decreased. The silica reinforced NR/EUG blend with NR/EUG blend ratio of 85/15 had small
cutting amount，the lowest compression temperature rise and the lowest Akron abrasion. |
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