具有高抗迁移和抗烧蚀性能的功能化氧化石墨烯/羟基封端聚丁二烯复合材料

Functionalized GO/Hydroxy-Terminated Polybutadiene Composites with High Anti-Migration and Ablation Resistance Performance.

作者信息

Yin Shuai, Lu Zhehong, Bai Haoran, Liu Xinyang, Li Hao, Hu Yubing

机构信息

National Special Superfine Powder Engineering Research Center of China, Nanjing University of Science and Technology, Nanjing 210014, China.

College of Materials Science and Engineering, Shenyang University of Technology, Shenyang 110870, China.

出版信息

Polymers (Basel). 2022 Aug 15;14(16):3315. doi: 10.3390/polym14163315.

DOI:10.3390/polym14163315

PMID:36015571

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9414271/

Abstract

The migration of plasticizers such as nitroglycerin seriously affects the storage and working safety of rocket systems. In this work, hydroxy-terminated polybutadiene (HTPB) liner composites with the cross-linked structure were prepared by cross-linking isocyanate functionalized graphene oxide (IGO) with HTPB to prevent the migration of high energy plasticizers in the propellant. IGO was uniformly dispersed in the matrix as reinforcement and cross-linker, providing good migration resistance and ablation resistance for the liner composites. Compared with pure HTPB, the migration resistance of the liner with 0.5 wt% IGO increased by 18.94%, 16.33% and 15.34% at 25 °C, 60 °C and 90 °C, respectively. In addition, the ablation resistance of the HTPB liner was improved by the addition of IGO. The improved anti-migration properties come from the special laminar structure of IGO and the dense molecular chains network of the cross-linked composites.

摘要

硝化甘油等增塑剂的迁移严重影响火箭系统的储存和工作安全性。在这项工作中，通过异氰酸酯官能化氧化石墨烯（IGO）与端羟基聚丁二烯（HTPB）交联制备了具有交联结构的HTPB衬里复合材料，以防止推进剂中高能增塑剂的迁移。IGO作为增强剂和交联剂均匀分散在基体中，为衬里复合材料提供了良好的抗迁移性和耐烧蚀性。与纯HTPB相比，含0.5 wt% IGO的衬里在25℃、60℃和90℃下的抗迁移性分别提高了18.94%、16.33%和15.34%。此外，添加IGO提高了HTPB衬里的耐烧蚀性。抗迁移性能的提高源于IGO特殊的层状结构和交联复合材料致密的分子链网络。