结晶型超支化聚醚醚酮的分子设计、合成及其作为粘度调节剂的研究

项目名称： 结晶型超支化聚醚醚酮的分子设计、合成及其作为粘度调节剂的研究

项目编号： No.51203060

项目类型： 青年科学基金项目

立项/批准年度： 2013

项目学科： 有机高分子材料学科

项目作者： 张淑玲

作者单位： 吉林大学

项目金额： 25万元

中文摘要： 应用于宇航、电子及核能等高技术领域的线性聚醚醚酮由于其熔融温度较高，熔体粘度较大限制了其加工方式的多样化，进而限制了其开发与应用的更多可能性。无定型超支化聚醚醚酮适量加入可改善线性聚醚醚酮的加工性能，不影响其力学性能和热稳定性，但是它的加入要以牺牲线性聚醚醚酮的耐溶剂性为代价，为了实现性能的同时优化，本项目针对如何制备结晶型超支化聚醚醚酮开展研究。从单体结构设计入手，借助于聚合物链结构的调整实现聚合物聚集态的控制，制备出结晶型超支化聚醚醚酮，进而优化出适宜作为线性聚醚醚酮粘度调节剂的结晶型超支化聚醚醚酮是本项目的特色。在单体结构设计的基础上，通过反应单体结构、投料比和聚合方法的变化得到预期结晶型超支化聚醚醚酮，研究其加入对线性聚醚醚酮综合性能的影响。同时结合一些现代分析技术：例如NMR，FTIR，GPC，DSC等，争取在理论的层面阐述作为粘度调节剂的超支化聚合物所具有的特征。

中文关键词： 结晶型；超支化；聚醚醚酮；分子设计；粘度调节剂

英文摘要： For linear poly(ether ether ketone) (LPEEK) widely applied in high-tech fields such as aerospace, electronics and nuclear energy, the diversity of the processing methods and the more possibility of the applications were limited due to the high melting point and the high processing temperature. The appropriate addition of amorphous hyperbranched poly(ether ether ketone) (HPEEK) could improve the melt processability of LPEEK without sacrificing the mechanical properties and the thermal stability of LPEEK, but damage the solvent resistance of LPEEK. In order to achieve the optimal performance, the focus of the project is how to prepare the crystalline HPEEK. Starting from the structure design of the monomer, the crystalline HPEEK will be prepared by adjusting the structure of the polymer chain to achieve the control of the aggregate state. Moreover, optimizing the crystalline HPEEK suitable as rheology control agents for LPEEK is a feature of the project. The expected crystalline HPEEK will be obtained by the changes in the monomer structure, the feed ratio, and the polymerization. Moreover, the influence of the addition of the crystalline HPEEK on the comprehensive performance of LPEEK will be evaluated. Furthermore, the essential characteristics of hyperbranched polymers suitable as rheology control agents will b

英文关键词： crystalline；hyperbranched；poly(ether ether ketone)；molecular design；rheology control agent