| 蓝晶石尾矿对天然橡胶胶料性能的影响 |
| Effects of Kyanite Tailings on Properties of NR Compounds |
| 投稿时间：2021-01-26 修订日期：2021-01-26 |
| DOI：10.12136/j.issn.1000-890X.2022.11.0851 |
| 中文关键词: 天然橡胶 蓝晶石尾矿 粒径 改性剂 硫化特性 物理性能 断面形貌 |
| 英文关键词: NR kyanite tailings particle size modifier vulcanization characteristic physical property section morphology |
| 基金项目: |
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| 中文摘要: |
| 研究蓝晶石尾矿粒径、用量及改性对天然橡胶（NR）胶料性能的影响。结果表明，当未改性蓝晶石尾矿粒径[D90（累计分布达到90%的粒径）]为2. 75 μm和用量为50份时，NR硫化胶的综合物理性能最佳；各改性剂（硬脂酸、铝酸
酯、棕榈酸和偶联剂KH-550）改性蓝晶石尾矿（粒径为2. 75 μm）的NR胶料的FL和Fmax增大，其中偶联剂KH-550改性蓝晶石尾矿的NR胶料的t10和t90缩短，NR硫化胶的300%定伸应力、拉伸强度和撕裂强度最大，分别为9. 8 MPa，24. 3 MPa和42 kN·m-1；偶联剂KH-550改性蓝晶石尾矿与NR的粘结较好，其NR硫化胶的撕裂断面较为粗糙、致密。 |
| 英文摘要: |
| Effects of the particle size，dosage and modification of The effects of the particle size，dosage and modification of kyanite tailings on properties
of natural rubber （NR） compounds were studied. The results showed that when the unmodified kyanite
tailings particle size [D90 （the cumulative distribution particle size of 90%）] was 2. 75 μm and the dosage
was 50 phr，the comprehensive physical properties of the NR vulcanizates were the best. TheFL and Fmax of
the NR compounds with the kyanite tailings（the particle size was 2. 75 μm） modified by various modifiers
（stearic acid，aluminate，palmitic acid and coupling agent KH-550） increased，and among them，the t10 and
t90 of the NR compound with the kyanite tailings modified by coupling agent KH-550 were shortened，the
tensile stress at 300% elongation，tensile strength and tear strength of the NR vulcanizate were the highest，
which were 9. 8 MPa，24. 3 MPa and 42 kN·m-1, respectively. Kyanite tailings modified by coupling agent
KH-550 had better bonding with NR，and the tear section of the NR vulcanizate was rough and dense. |
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