| 天然橡胶/反式-1，4-聚异戊二烯并用胶的制备及性能研究 |
| Preparation and Properties of NR/TPI Blends |
| 投稿时间：2022-05-19 修订日期：2022-05-19 |
| DOI：10.12136/j.issn.1000-890X.2024.03.0183 |
| 中文关键词: 反式-1，4-聚异戊二烯 天然橡胶 微晶结构 阻尼性能 耐疲劳性能 |
| 英文关键词: TPI NR microcrystalline structure damping performance fatigue resistance |
| 基金项目:国家重点研发计划项目（2022YFD2301204） |
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| 中文摘要: |
| 制备减震制品用天然橡胶（NR）/反式1，4-聚异戊二烯（TPI）并用胶，并研究天然TPI（杜仲胶和古塔波胶）和合成TPI（牌号TPI-28，TPI-58，TPI-80）对NR/TPI并用胶性能的影响。结果表明：合成TPI的结晶度高于天然TPI；合成TPI和天然TPI对NR/TPI混炼胶的加工安全性和硫化速率的影响十分微小；与NR硫化胶相比，NR/TPI硫化胶的邵尔A型硬度和100%定伸应力提高，回弹值增大，压缩永久变形减小，阻尼性能提高，动态生热降低，耐热空气老化性能改善，尤其是耐疲劳性能显著提高，NR/TPI-28硫化胶的六级屈挠龟裂疲劳次数和伸张疲劳次数分别达到了100万和近200万。NR/TPI并用胶可显著延长减震制品的使用寿命。 |
| 英文摘要: |
| The shock-absorbing product using natural rubber（NR）/trans-1，4-polyisoprene（TPI） blends were prepared，and the effects of natural TPI（Eucommia ulmoides rubber and Guttapo rubber） and synthetic TPI （grades TPI-28，TPI-58，TPI-80） on the properties of NR/TPI blends were studied.The results showed that the crystallinities of synthesized TPI were higher than those of natural TPI.The impacts of both synthetic TPI and natural TPI on the processing safety and vulcanization rates of NR/TPI compounds were minimal.Compared with NR vulcanizate，NR/TPI vulcanizates had higher Shore A hardnesses and moduli at 100% elongation，increased rebound values，reduced compression sets，improved damping performance，decreased dynamic heat generation，perfected heat resistance to air aging，significantly improved fatigue resistance，especially the number of times of six level flexural cracking fatigue and tensile fatigue of NR/TPI-28 vulcanizate were over one million and nearly two million respectively.NR/TPI-28 blend could significantly prolong the service life of shock-absorbing products. |
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