大学化学 >> 2025, Vol. 40 >> Issue (11): 221-232.doi: 10.12461/PKU.DXHX202412046

所属专题： “双碳”战略与化学

化学实验 上一篇    下一篇

高分子综合实验设计：“双碳”战略下可重复加工丁苯橡胶材料的制备与性能

尹常杰, 王博煜, 乔丹彤, 李慧敏   

  1. 西北工业大学化学与化工学院, 西安 710072
  • 收稿日期:2024-12-04 录用日期:2025-03-25 发布日期:2025-11-21
  • 通讯作者: 尹常杰 E-mail:yinchangjie@nwpu.edu.cn Changjie Yin
  • 基金资助:
    西北工业大学校级教育教学改革研究项目(2024JGY45)；2024年度校级课程建设项目(24GZ11329)；2023年大学生创新训练项目(S202310699580)；国家自然科学基金项目(51603168)

Polymer Comprehensive Experimental Design: Preparation and Properties of Repeatable Processing Styrene Butadiene Rubber Materials under the “Dual Carbon” Strategy

Changjie Yin, Boyu Wang, Dantong Qiao, Huimin Li   

  1. School of Chemistry and Chemical and Engineering, Northwestern Polytechnical University, Xi'an 710072, China
  • Received:2024-12-04 Accepted:2025-03-25 Published:2025-11-21
  • Contact: Changjie Yin E-mail:yinchangjie@nwpu.edu.cn

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摘要： 为进一步让学生理解“双碳”战略，本实验教学设计从可重复加工橡胶材料出发。首先，用1,4-苯二硼和(3-巯丙基)三乙氧基硅烷反应得到了一种新型交联剂(B-KH580)；其次，将B-KH580与丁苯橡胶(SBR)共混；最后，160 °C热压成型得到硼酸酯键交联的SBR。由于该橡胶材料中含有大量的可发生可逆易位反应的可逆动态共价键硼氧键(—B—O—)，从而使其表现出良好的可重复加工性能，橡胶经过重复加工后拉伸强度可以恢复到95%以上，断裂伸长率可以恢复到84%以上，杨氏模量可以恢复到87%以上。通过该实验教学，不仅可以将最新的科研进展引入到课堂实验教学中，同时可以让学生更加直观地明晰“双碳”战略。

关键词: 双碳, 动态共价键, 可重复加工, 橡胶, 硼酸酯键, 实验教学

Abstract: To enhance students’ understanding of the “dual carbon” strategy, this experimental teaching design focuses on reprocessable rubber materials. First, a novel crosslinking agent (B-KH580) was synthesized through the reaction between 1,4-phenyldiboronic acid and (3-mercaptopropyl)triethoxysilane. Subsequently, B-KH580 was blended with styrene-butadiene rubber (SBR), followed by hot-pressing at 160 °C to obtain boronate ester-crosslinked SBR. The incorporation of abundant reversible dynamic covalent boron-oxygen bonds (―B―O―) enables the rubber material to exhibit excellent reprocessability. After reprocessing, the material maintains over 95% of its original tensile strength, over 84% of its elongation at break, and over 87% of its Young’s modulus. This experimental approach not only introduces cutting-edge research into laboratory teaching but also provides students with a tangible demonstration of the “dual carbon” strategy.

Key words: Dual carbon, Dynamic covalent bond, Reprocessable, Rubber, Bond of borate ester, Experimental teaching