{"title":"Development of SiO2 nanofibre fillers with low-thermal conductivity by regulating heat-treatment process","authors":"YIFAN WU, YANGFAN PAN, JUNXIA GUO, YONGQIANG MENG, HONGJUN HUANG","doi":"10.1007/s12034-024-03366-2","DOIUrl":null,"url":null,"abstract":"<div><p>Silicon dioxide (SiO<sub>2</sub>) is considered to be a promising material for thermal insulation. However, the application scenarios of insulation materials are limited, and how to enhance their practical application value has been an attractive research topic. In this work, SiO<sub>2</sub> nanofibres were prepared by the electrospinning technology. Effects of different heat-treatment parameters on SiO<sub>2</sub> crystal transformation, nanofibres’ diameter and thermal conductivity were investigated, and the thermal-insulation mechanism of SiO<sub>2</sub> nanofibres was further studied. Results of the study show that the heat-treatment process has a significant effect on nanofibre diameter, which affects thermal conductivity. When the heat-treatment temperature is 900°C, the heating rate is 8°C min<sup>−1</sup> and holding time is 2 h, the diameter of SiO<sub>2</sub> nanofibres is the finest, and thermal conductivity is the lowest (0.039 W mK<sup>−1</sup>). In addition, nanofibres is demonstrated as functional fillers of thermal-insulation coating, which exhibit excellent thermal insulation and mechanical properties. This study can provide a certain reference value for the development of new lightweight and functional thermal-insulation fillers.</p></div>","PeriodicalId":502,"journal":{"name":"Bulletin of Materials Science","volume":"48 1","pages":""},"PeriodicalIF":1.9000,"publicationDate":"2024-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Bulletin of Materials Science","FirstCategoryId":"88","ListUrlMain":"https://link.springer.com/article/10.1007/s12034-024-03366-2","RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0
Abstract
Silicon dioxide (SiO2) is considered to be a promising material for thermal insulation. However, the application scenarios of insulation materials are limited, and how to enhance their practical application value has been an attractive research topic. In this work, SiO2 nanofibres were prepared by the electrospinning technology. Effects of different heat-treatment parameters on SiO2 crystal transformation, nanofibres’ diameter and thermal conductivity were investigated, and the thermal-insulation mechanism of SiO2 nanofibres was further studied. Results of the study show that the heat-treatment process has a significant effect on nanofibre diameter, which affects thermal conductivity. When the heat-treatment temperature is 900°C, the heating rate is 8°C min−1 and holding time is 2 h, the diameter of SiO2 nanofibres is the finest, and thermal conductivity is the lowest (0.039 W mK−1). In addition, nanofibres is demonstrated as functional fillers of thermal-insulation coating, which exhibit excellent thermal insulation and mechanical properties. This study can provide a certain reference value for the development of new lightweight and functional thermal-insulation fillers.
期刊介绍:
The Bulletin of Materials Science is a bi-monthly journal being published by the Indian Academy of Sciences in collaboration with the Materials Research Society of India and the Indian National Science Academy. The journal publishes original research articles, review articles and rapid communications in all areas of materials science. The journal also publishes from time to time important Conference Symposia/ Proceedings which are of interest to materials scientists. It has an International Advisory Editorial Board and an Editorial Committee. The Bulletin accords high importance to the quality of articles published and to keep at a minimum the processing time of papers submitted for publication.