新型尼龙1211的合成与性能研究  

Synthesis and characterization of novel nylon 1211

作　　者：陈广建 张丽丽[1,2] 张长琦 冯新星 CHEN Guangjian;ZHANG Lili;ZHANG Changqi;FENG Xinxing(School of Chemical Engineering,Beijing University of Chemical Technology,Beiijing 100029,China;Beijing Enterprises Water Group Limited Technology&Research Center,Beijing 100103,China;Quartermaster Engineering and Technology Institute of Systems Engineering Institute of Military Academy of Military Science,Beijing 100082,China)

机构地区：[1]北京化工大学化学工程学院,北京100029 [2]北控水务集团有限公司技术研发中心,北京100103 [3]军事科学院系统工程研究院军需工程技术研究所,北京100082

出　　处：《功能材料》2018年第4期4107-4111,共5页Journal of Functional Materials

基　　金：部队科研资助项目(05-002)

摘　　要：采用一步法聚合了尼龙1211。FT-IR与~1 H NMR测试结果表明尼龙1211被成功聚合;同时尼龙的结晶结构、热性能、粘弹行为能用WAXD、TGA、DSC、DMA进行表征。WAXD测试结果表明,随着退火温度升高,尼龙的晶型由α晶型向γ晶型转变;TGA和DSC测试结果表明,尼龙1211具有良好的耐高温性与热稳定性;DMA测试结果表明,在低温下依旧拥有优异的韧性与冲击强度;根据力学性能与吸水率测试可知,尼龙1211在具有优异力学性能同时,其具有更低的吸水率,使得机械性能、热力学性能在不同湿度条件下更加稳定。Nylon 1211 was successfully synthesized using a step heating melt polycondensation.FT-IR and 1H NMR were utilized to confirm the successful synthesis of nylon 1211.Meanwhile,the thermal properties,crystal structures and relaxation processes of the samples were characterized by TGA,DSC,WAXD and DMA.When the melt-crystallized nylon 1211 samples are heated from room temperature to a higher temperature,the WAXD measurement indicates that the crystal structures of the samples transform fromα-forms toγ-forms.Thermal stability of nylon 1211 was characterized using the TGA and DSC under nitrogen atmosphere.Nylon 1211 has good heat resistance and thermal stability.The DMA measurement shows that nylon 1211 has low-temperature flexibility and good cold endurance.Nylon 1211 not only possesses excellent mechanical properties but also has low water absorption,which make it suitable for uses requiring retention of mechanical properties and thermal properties under varying conditions of humidity.

关 键 词：尼龙1211 聚合 低吸水率 力学性能 稳定 

分 类 号：TQ323.6[化学工程—合成树脂塑料工业]