[1]张桂梅,姜士宽,岩 利,等.氮含量对木瓜蛋白酶凝固天然橡胶性能的影响[J].合成橡胶工业,2023,1:19-22.
ZHANG Gui-mei,JIANG Shi-kuan,YAN Li,et al.Effect of nitrogen content on properties of natural rubber coagulated by papain[J].China synthetic rubber industy,2023,1:19-22.
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氮含量对木瓜蛋白酶凝固天然橡胶性能的影响(PDF)
《合成橡胶工业》[ISSN:1000-1255/CN:62-1036/TQ]
- 期数:
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2023年1期
- 页码:
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19-22
- 栏目:
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- 出版日期:
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2023-01-15
文章信息/Info
- Title:
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Effect of nitrogen content on properties of natural rubber coagulated by papain
- 文章编号:
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1000-1255(2023)01-0019-04
- 作者:
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张桂梅; 姜士宽; 岩 利; 祝 翱; 邹建云?鄢
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云南省热带作物科学研究所,云南 景洪 666100
- Author(s):
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ZHANG Gui-mei; JIANG Shi-kuan; YAN Li; ZHU Ao; ZOU Jian-yun
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Yunnan Institute of Tropical Crops, Jinghong 666100, China
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- 关键词:
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天然橡胶; 木瓜蛋白酶; 氮含量; 硫化特性; 物理机械性能; 压缩疲劳生热; 动态力学性能
- Keywords:
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natural rubber; papain; nitrogen content; curing characteristics; physical and mechanical property; compression fatigue heat build-up; dynamic mechanical property
- 分类号:
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TQ 332.1
- DOI:
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DOI:10.19908/j.cnki.ISSN1000-1255.2023.01.0019
- 文献标识码:
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A
- 摘要:
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利用木瓜蛋白酶凝固天然胶乳制备了不同氮含量的天然橡胶(NR-P),研究了NR-P的生胶理化性能和混炼胶硫化特性,以及硫化胶的物理机械性能、压缩疲劳生热和动态力学性能,并与酸凝天然橡胶(NR-A)进行了对比。结果表明,随着氮含量的降低,NR-P的塑性初值先降低再趋于稳定,塑性保持率则稍有下降;混炼胶的硫化速率增大;硫化胶的300%定伸应力和拉伸强度均呈现先增大后稍有减小的趋势,压缩温升和滚动阻力都基本呈现减小趋势。与NR-A相比,NR-P的氮含量较低,但其塑性初值较高而塑性保持率稍低,硫化速率及拉伸强度也优于NR-A。当含氮质量分数处于0.18%~0.23%时,NR-P具有较快的硫化速率,较好的物理机械性能、压缩疲劳生热性能和动态力学性能。
- Abstract:
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Natural rubber with different nitrogen content (NR-P) was prepared by coagulation from fresh hevea latex with papain as granulation agent. The physical and chemical properties, curing cha-racteristics, physical and mechanical properties, compression fatigue heat build-up and dynamic mechanical properties of NR-P were studied and compared with that of acid-coagulated natural rubber (NR-A).The results showed that with decrease of nitrogen content, the initial plasticity of NR-P decreased first and then leveled off, while the plasticity retention index decreased slightly. The curing rate of the rubber compound with NR-P became faster, the modulus at 300%, tensile strength first increased and then decreased slightly. Besides, the heat build-up and rolling resistance of natural rubber vulcanizate also showed a decreasing trend. Compared with NR-A, the nitrogen content of NR-P was lower, but the initial plasticity was higher and plasticity retention index was slightly lower, and the curing rate and tensile strength were also better than that of NR-A. When the mass fraction of nitrogen of natural rubber was in the range of 0.18% to 0.23%, NR-P compounds exhibited faster curing rate, better mechanical properties, lower compression fatigue heat build-up and dynamic mechanical properties.
参考文献/References
[1] 何映平. 天然橡胶加工学[M]. 海口: 海南出版社, 2007: 33.[2] Yusof N H, Kawahara S, Yamamoto O, et al. Preparation of super-low protein natural rubber[J]. KGK Rubber Point, 2015, 68(4): 46-51. [3] Moolsin S, Prasoppol P, Potisuya P, et al. Deproteinized natural rubber film reinforced with silane-modified silica nanoparticles[J]. Journal of Elastomers and Plastics, 2020, 53(1): 31-47.[4] 袁小龙, 陈鹰, 黄茂芳, 等. 低蛋白天然胶乳的制备及其性能研究[J]. 热带作物学报, 2002, 23(2): 17-26.[5] 黄红海, 桂红星, 黄茂芳, 等. 脱蛋白天然橡胶的性能研究[J]. 橡胶工业, 2018, 65(9): 1012-1015.[6] Fu Xuan, Huang Cheng, Zhu Yong, et al. Characterizing the naturally occurring sacrificial bond within natural rubber[J]. Polymer, 2019,161: 41-48.[7] 高天明, 吕臻, 夏加亮, 等. 沥滤法制备低蛋白天然橡胶的性能表征[J]. 高分子材料科学与工程, 2020, 36(1): 70-82.[8] Othman A B, Hepburn C. Influence of non-rubber constituents on elastic properties of natural rubber vulcanizates[J]. Plastics Rubber and Composites Processing and Applications, 1993, 19(3): 185-194.[9] 胡朝伟, 赵艳芳, 张建新, 等. 低蛋白天然橡胶的制备与性能研究[J]. 橡胶工业,2012, 59(8): 490-493.[10] 蔡克平, 李普旺, 刘元, 等. 蛋白质含量对天然橡胶性能的影响[J]. 橡胶科技, 2014(2): 18-22.[11] Kondou H. Natural rubber, rubber composition and pneumatic tire: EP, 1489102 B 1[P]. 2007-05-12.
备注/Memo
- 备注/Memo:
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云南省热带作物科技创新体系建设项目(RF 2021);云南省现代农业橡胶产业技术体系建设专项(2021 KJTX 008)
更新日期/Last Update:
2023-01-15