自修复聚氨酯-脲的合成与表征综合实验设计  

Comprehensive Experiment Design for Synthesis and Characterization of Self-healing Polyurethane-Urea

作　　者：李苏宁[1] 王东[2] 杨靖[3] 吴丹[1] 傅佳骏[1] LI Suning;WANG Dong;YANG Jing;WU Dan;FU Jiajun(Nanjing University of Science and Technology,Nanjing 210094,China;Changzhou University,Changzhou 213000,China;Chuzhou University,Chuzhou 239000,China)

机构地区：[1]南京理工大学,江苏南京210094 [2]常州大学,江苏常州213000 [3]滁州学院,安徽滁州239000

出　　处：《化工管理》2024年第18期144-147,共4页Chemical Engineering Management

基　　金：江苏省高等教育教改研究项目(2023JSJG293);滁州学院教学研究项目(2023jyc004)。

摘　　要：文章结合自修复材料的科研基础,并以自修复聚合物黏结剂在含能复合材料中的需求为导向,设计了一个以国防现代化建设为背景的化学综合实验。该实验以聚氨酯-脲为例,采用甲苯-2,4-二异氰酸酯封端的聚丙二醇和异佛尔酮二胺作为原料合成,通过红外光谱进行结构鉴定,并对产物的自修复性能和黏结能力进行研究。所得聚氨酯-脲具有优异的室温自修复效果,室温下9 h后自修复效率可达87%,同时其与模拟不同含能组分的钢片和有机玻璃片均具有良好的黏结强度。该实验以材料合成—结构—性能—应用为主线,涵盖了较为完整的聚氨酯材料研究的知识体系,在夯实基础理论知识和实验操作技能的基础上,培养研究性学习实践的能力和素养,深化学习强国的价值导向。Based on the research foundation on self-healing materials,guided by the demands on self-healing polymer binder in energetic composite materials,a chemical comprehensive experiment was designed under the background of national defense modernization construction.In this experiment,polyurethane-urea was synthesized by using toluene diisocyanate ended polypropylene glycol and isophorone diamine as raw materials.The structure of the product was identified by infrared spectrum,and its self-healing performances and adhesion properties were studied.The obtained polyurethane-urea has excellent self-healing effects at room temperature and its self-healing efficiency can reach to 87%after 9 h at room temperature.Meanwhile,polyurethane-urea has good adhesive strength with steel sheet and plexiglass sheet which simulate different energetic components respectively.In this experiment,material synthesis-structure-performance-application is taken as the main line,covering a relatively complete knowledge system of polyurethane materials research.On the basis of consolidating basic theoretical knowledge and experimental operation skills,the investigative learning ability and accomplishment is cultivated,and the value orientation of learning to strengthen the country.

关 键 词：自修复聚合物 聚氨酯-脲 黏结剂 

分 类 号：G64[文化科学—高等教育学] O6[文化科学—教育学]