Preparation and heat insulation of Gemini-halloysite aerogel/concrete composites
Preparation and heat insulation of Gemini-halloysite aerogel/concrete composites
复制标题
Gemini-埃洛石气凝胶/混凝土复合材料的制备及隔热性能
DOI：
10.1515/polyeng-2020-0317
复制
发表时间：
2021-03
影响因子：
2
通讯作者：
王建刚
中科院分区：
文献类型：
--
作者：
李洪彦;臧鹏飞;刘洪丽;曹凯;廖晓兰;魏冬青;张博;李环;王建刚
摘要 在我们之前的研究中，利用双子表面活性剂来控制埃洛石纳米管气凝胶（HCAs）在混凝土基体中的分散和相互作用已取得了积极的研究成果。为了进一步深化该领域的研究
Abstract In our previous research, the utilization of Gemini surfactants to control the dispersion and interaction of HNTs aerogels (HCAs) in the concrete matrix had obtained positive research results. In order to further deepen the research in this field, in this work, a Gemini surfactant with a new structure was synthesized, the surface modification characteristics of HCAs in a series of concrete systems were also investigated. Microstructures and properties of the composites were characterized by using scanning electron microscope (SEM), Fourier transform infrared (FTIR), Thermogravimetric analysis (TGA), and so on. The results showed that the newly synthesized Gemini surfactants had an ideal modification effect on the surface of HCAs. Compared with other traditional surfactants, Gemini had better hydrophobic and mechanical properties. Different molecular layers with hydrophilicity or hydrophobicity were constructed on the HCAs surface. The introduction of the modified HCAs could significantly improve the heat insulation performance and mechanical strength of concrete. The improvement of the above comprehensive properties could not have significant difference due to the different types of concrete matrix.