摘要
以邻苯二甲酸醋酸纤维素(CAP)为基体、丁二酸酐(SA)为助剂、双酚A二缩水甘油醚(DGEBA)为固化剂制备了纤维素基可重塑Vitrimer材料CAP-SA-DGEBA,并优化了反应条件。采用FT-IR、凝胶分数测试(Gf)、DSC、SRA、TGA等对CAP-SA-DGEBA进行了表征,结果表明,体系内部形成了共价交联网络,CAP-SA-DGEBA凝胶分数可达71.4%,材料的玻璃化转变温度为44℃,应力松弛时间随温度升高而快速降低,较CAP的热分解温度提高了121℃。对材料进行重塑形发现,材料具备可重塑性能,重塑后依然保持良好的机械性能。
Cellulose based reshaping Vitrimer CAP-SA-DGEBA was prepared by using cellulose acetate phthalate(CAP)as main material,succinic anhydride(SA)as additive agent and bisphenol A diglycidyl ether(DGEBA)as curing agent.The CAP-SA-DGEBA was characterized by means of FTIR,gel fraction test(Gf),DSC,SRA,TGA and so forth.The results proved the formation of covalent crosslinking network in the system,the gel fraction of the CAP-SA-DGEBA was 71.4%,the glass transition temperature of the CAP-SA-DGEBA was 44℃,the stress relaxation time decreased rapidly with the increase of temperature.TGA showed that the thermal decomposition temperature of CAP-SA-DGEBA increased by more than 121℃compared with that of CAP,and the reshaping test of the material showed that the material had reshaping property.After reshaping,the material maintained good mechanical properties.
作者
刘来伍
具本植
Liu Laiwu;Ju Benzhi(China Petroleum and Chemical Corporation Dalian Research Institute of Petroleum and Petrochemicals,Dalian 116045;State Key Laboratory of Fine Chemicals,Dalian University of Technology,Dalian 116012)
出处
《化工新型材料》
CAS
CSCD
北大核心
2022年第5期103-106,111,共5页
New Chemical Materials
基金
国家自然科学基金(21376041,21878036)。
