化学学报 ›› 2025, Vol. 83 ›› Issue (9): 1018-1024.DOI: 10.6023/A25040108 上一篇    下一篇

研究论文

端羟基聚丁二烯(HTPB)接枝含硅双核二茂铁衍生物的合成及其应用性能研究

喻尧a,b,, 李晓强a,, 刘佳鑫a, 顾军a,c, 涂涛c,*(), 杨军a,*()   

  1. a 中国科学院上海有机化学研究所 先进氟氮材料全国重点实验室 中国科学院大学 上海 200032
    b 湖北航天江河化工有限公司 宜昌 444200
    c 复旦大学化学系 上海市分子催化和功能材料重点实验室 上海 200438
  • 投稿日期:2025-04-03 发布日期:2025-06-03
  • 作者简介:
    † 共同第一作者
  • 基金资助:
    中国科学院稳定支持青年团队计划(YSBR-052); 中国科学院战略先导计划(XDB0590200); 国家自然科学基金青年项目(C类)(22305261)

Synthesis and Application of Silicon-containing Biferrocene Derivatives Grafted Hydroxyl-terminated Polybutadiene (HTPB)

Yao Yua,b,†, Xiaoqiang Lia,†, Jiaxin Liua, Jun Gua,c, Tao Tuc,*(), Jun Yanga,*()   

  1. a State Key Laboratory of Fluorine and Nitrogen Chemistry and Advanced Materials, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai 200032, China
    b Hubei Aerospace Jianghe Chemical Co., Ltd, Yichang 444200, China
    c Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Department of Chemistry, Fudan University, Shanghai 200438, China
  • Received:2025-04-03 Published:2025-06-03
  • Contact: * E-mail: taotu@fudan.edu.cn,yangj@sioc.ac.cn
  • About author:
    † These authors contributed equally to this work
  • Supported by:
    CAS Project for Young Scientists in Basic Research(YSBR-052); Strategic Priority Research Program of the Chinese Academy of Sciences(XDB0590200); National Natural Science Foundation of China(22305261)

针对二茂铁类燃速催化剂在推进剂中易挥发和易迁移、含有二茂铁的高分子聚合物铁含量偏低催化效果不佳等问题, 本工作开展了端羟基聚丁二烯(HTPB)接枝含硅双核二茂铁衍生物的合成和应用研究. 首先合成系列含有硅烷的双核二茂铁衍生物, 然后通过硅氢化反应将其接枝在HTPB聚合物上, 获得了三种不同的HTPB接枝含硅双核二茂铁的燃速催化剂, 其铁含量(质量分数)分别为10.7%、11.9%和14.1%, 高于Butacene的铁含量(8%). 同时, 对其热稳定性和催化分解高氯酸铵(AP)的性能进行了测试, 结果表明其热分解温度及其催化AP分解的温度均有所降低, 具有较好的催化分解AP的效果, 未来在HTPB固体推进剂配方中具有应用潜力.

关键词: 双核二茂铁, 端羟基聚丁二烯, 硅氢化反应, 固体推进剂, 燃速催化剂

This work focuses on the synthesis and application research of silicon-containing biferrocene derivatives grafted onto hydroxyl-terminated polybutadiene (HTPB), to address the issues of volatility and migration tendency of ferrocene combustion catalysts in solid rocket propellants, as well as the insufficient catalytic performance caused by low iron content in ferrocene-containing polymeric materials. Firstly, a template reaction was employed to optimize the hydrosilylation reaction conditions. In this part, 4-vinyl-1-cyclohexene was employed as substrate, and the ratio of substrate, solvent, reaction time, reaction temperature was optimized. Based on the optimized condition, ferrocene silane derivatives and HTPB were utilized as substrates to obtain HTPB grafted silicon-containing biferrocene compounds. Subsequently, the relationship of biferrocene silane loading and the iron contents as well as the grafting rate were investigated. As the result, three different HTPB grafted silicon-containing biferrocene combustion catalysts were obtained by grafting biferrocene silane derivatives on HTPB polymers through hydrosilylation reactions. The iron contents of above combustion catalysts were 10.7%, 11.9% and 14.1% respectively, which were higher than that of Butacene (8%). At the same time, its thermal stability and catalytic decomposition performance of ammonium perchlorate (AP) were tested. The combustion catalysts were mixed with ultrafine AP at a mass ratio of 5∶95, then carefully ground it to uniformity. The solvent was evaporated during the grinding process. After grinding, a mixture of combustion catalyst and AP was obtained, and then differential scanning calorimetry (DSC) and thermogravimetric (TG) study were employed. The results demonstrated that the decomposition temperature of AP under catalytic conditions were reduced. The initial and final decomposition temperatures of AP were reduced after adding 5% biferrocene-containing HTPB, with the final decomposition temperature reduced by about 57~77 ℃, and the high decomposition temperature reduced by 87.4~103.7 ℃, which could catalyze the decomposition of AP efficiently. These above combustion catalysts might be utilized in HTPB solid rocket propellant in the future.

Key words: biferrocene, hydroxyl-terminated polybutadiene (HTPB), hydrosilylation reaction, solid rocket propellant, combustion catalyst