功能化石墨烯调控PEG相变材料的制备及其构效关系研究

项目名称： 功能化石墨烯调控PEG相变材料的制备及其构效关系研究

项目编号： No.51503173

项目类型： 青年科学基金项目

立项/批准年度： 2016

项目学科： 一般工业技术

项目作者： 张平

作者单位： 西南科技大学

项目金额： 20万元

中文摘要： 聚乙二醇（PEG）相变材料能将太阳能、地热能、工业余热等间歇性、不稳定的能量储存后高密度、稳定的输出，然而PEG的易渗漏、能量利用率低和热稳定性能差的缺点严重限制了其在实际生产生活中的推广和应用。本项目针对PEG相变材料的缺点，利用分子和结构设计原理，通过石墨烯的边缘修饰，控制合成拥有石墨烯、P、N、Si以及反应性基团组成的杂化骨架；再利用溶胶-凝胶反应，将PEG嵌入到由杂化骨架形成的网络结构中，获得功能化石墨烯调控的PEG相变材料（g-PEG），使PEG相变材料存在易渗漏、能量利用率低和热稳定性能差的缺点在同一材料中得到解决。研究反应物、合成工艺等对杂化骨架组成、结构的影响，获得杂化骨架可控合成的技术；研究g-PEG的抗渗漏、导热性能、热稳定性能、相变储能等性能，揭示g-PEG性能与杂化骨架组成、结构间的本质关系；通过本项目的研究能为开发综合性能优异的PEG相变材料提供实验和理论支撑。

中文关键词： 聚乙二醇（PEG）；相变材料；石墨烯；一体化；构效关系

英文摘要： The intermittent, unstable energy such as solar energy, geothermal energy, and industrial waste heat could be absorbed, then the energy can be output efficiently and steadily by polyethylene glycol (PEG) as a phase change material, however, the PEG phase change material cannot be promoted and applied in practical application because of easy leakage, poor heat conductivity and low thermal stability. Aim at the defects of polyethylene glycol (PEG) as a phase change material, the skeleton structure hybrid composing reactive functional groups, graphene, phosphorus, nitrogen, silicon and other elements is to be synthesized based on the edge modification of graphene according to the molecular and structural design, PEG is to be embedded in the network structure formed by skeleton structure hybrid by sol-gel, then the PEG phase change material modified by functionalized graphene is synthesized, and the defects of polyethylene glycol (PEG) as a phase change material, such as easy leakage, poor heat conductivity and low thermal stability are to be resolved in the same material. The effects of the reactant, synthesis factors on the composition, structure of skeleton structure hybrid are to be studied, and the controlled synthesis techniques of skeleton structure hybrid is to be obtained; The anti-leakage, thermal conductivity, thermal stability, phase change and energy storage of g-PEG are to be researched, and the internal relationships between composition, structure of skeleton structure and properties of g-PEG are to be built; This research can provide technical and theoretical supports for preparation of excellent PEG as phase change materials.

英文关键词： Polyethylene glycol (PEG);Phase change material;Graphene;Integration;Structure-function relationship