辽宁石油化工大学学报 ›› 2026, Vol. 46 ›› Issue (4): 1-6.DOI: 10.12422/j.issn.1672-6952.2026.04.001

• 化学与化学工程 • 上一篇    下一篇

柠檬酸三丁酯增塑改性氯丁橡胶耐低温性能

赖照新1(), 骆珈源1, 邹艳2, 王璐璐1, 王吉林1()   

  1. 1.辽宁石油化工大学 石油化工学院,辽宁 抚顺 113001
    2.抚顺欧柏丽实业股份有限公司,辽宁 抚顺 113122
  • 收稿日期:2025-08-04 修回日期:2025-09-08 出版日期:2026-08-25 发布日期:2026-07-20
  • 通讯作者: 王吉林
  • 作者简介:赖照新(2000-),男,硕士研究生,从事高性能合成橡胶应用与开发方面的研究;E⁃mail:937832070@qq.com
  • 基金资助:
    辽宁省科技厅应用基础研究计划项目(2023JH2/101300217)

Low⁃Temperature Resistance of Chloroprene Rubber Plasticized and Modified with Tributyl Citrate

Zhaoxin LAI1(), Jiayuan LUO1, Yan ZOU2, Lulu WANG1, Jilin WANG1()   

  1. 1.School of Petrochemical Engineering,Liaoning Petrochemical University,Funshun Liaoning 113001,China
    2.Fushun Obali Industrial Co. ,Ltd. ,Funshun Liaoning 113122,China
  • Received:2025-08-04 Revised:2025-09-08 Published:2026-08-25 Online:2026-07-20
  • Contact: Jilin WANG

摘要:

氯丁橡胶(CR)主链结构中因含氯原子,增强了分子链间的相互作用,限制了分子链的运动,故该类橡胶具有较强的极性。在低温条件下,分子运动速率减慢,CR分子链有序排列并发生结晶,进而使其硬度增大和弹性降低。为提升CR的耐低温性能,通过引入绿色低温增塑剂柠檬酸三丁酯(TBC)对其进行改性,并考察了TBC质量分数对CR复合材料的硫化特性、门尼黏度、机械性能、玻璃化转变温度(Tg)以及脆性温度(Tb)等的影响。结果表明,随着TBC质量分数的增加,CR胶料的门尼黏度显著下降,焦烧时间延长,硫化胶的加工性能与耐低温性能得到显著改善;当TBC质量分数为5%时,CR的拉伸强度达到最大值12.16 MPa,回弹性达到最大值50.65%,永久压缩变形率降至最小值9.64%,断裂伸长率增加至497.59%,Tg降低至-34.5 ℃。由此可见,改性后CR的耐低温性能与机械性能得到同步显著改善,拓展了其在低温工况下的应用可行性。

关键词: 合成特种橡胶, 氯丁橡胶, 柠檬酸三丁酯, 耐低温增塑剂, 耐低温性能

Abstract:

The introduction of chlorine atoms into the main chain of chloroprene rubber (CR) strengthens intermolecular interactions, restricts molecular?chain mobility, and gives this rubber strong polarity. At low temperatures, molecular motion slows, causing CR molecular chains to arrange more regularly and crystallize, which increases hardness and reduces elasticity. To improve the low?temperature resistance of CR, the green low?temperature plasticizer tributyl citrate (TBC) was introduced for modification. The effects of TBC mass fraction on the vulcanization characteristics, Mooney viscosity, mechanical properties, glass?transition temperature (Tg), and brittle temperature (Tb) of CR composites were investigated. The results show that, with increasing TBC mass fraction, the Mooney viscosity of the CR compound decreases significantly, scorch time is prolonged, and the processing performance and low?temperature resistance of the vulcanizate are significantly improved. When the TBC mass fraction is 5%, the tensile strength of CR reaches its maximum value of 12.16 MPa, resilience reaches its maximum value of 50.65%, permanent compression set decreases to its minimum value of 9.64%, elongation at break increases to 497.59%, and Tg decreases to -34.5 ℃. These results indicate that the modified CR exhibits simultaneous improvements in low?temperature resistance and mechanical properties, thereby expanding its applicability under low?temperature operating conditions.

Key words: Synthetic specialty rubber, Chloroprene rubber, Tributyl citrate, Low temperature resistant plasticizer, Low temperature resistance

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引用本文

赖照新, 骆珈源, 邹艳, 王璐璐, 王吉林. 柠檬酸三丁酯增塑改性氯丁橡胶耐低温性能[J]. 辽宁石油化工大学学报, 2026, 46(4): 1-6.

Zhaoxin LAI, Jiayuan LUO, Yan ZOU, Lulu WANG, Jilin WANG. Low⁃Temperature Resistance of Chloroprene Rubber Plasticized and Modified with Tributyl Citrate[J]. Journal of Liaoning Petrochemical University, 2026, 46(4): 1-6.

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