SiO_(2)气凝胶/酚醛树脂复合材料隔热性能研究  

Study on thermal insulation properties of SiO_(2) aerogel/phenolic resin composites

作　　者：田志广 郭俊卿[1,2] 陈拂晓 Tian Zhiguang;Guo Junqing;Chen Fuxiao(School of Materials Science and Engineering,Henan University of Science and Technology,Luoyang 471023;Provincial and Ministerial Co-construction of Collaborative Innovation Center for Non-ferrous Metal New Materials and Advanced Processing Technology,Luoyang 471023)

机构地区：[1]河南科技大学材料科学与工程学院,洛阳471023 [2]有色金属新材料与先进加工技术省部共建协同创新中心,洛阳471023

出　　处：《化工新型材料》2024年第7期162-166,共5页New Chemical Materials

摘　　要：为了拓展酚醛树脂的工程应用,采用SiO_(2)气凝胶添加相,使用直接混合的常压干燥法制备了不同比例SiO_(2)气凝胶/酚醛树脂复合材料,通过红外光谱、比表面积及孔径分析对该复合材料的隔热性能进行研究。结果表明:SiO_(2)气凝胶以填充酚醛树脂中大孔的方式与酚醛树脂聚合,形成更加密集的网络,导致酚醛树脂的平均孔径明显下降,使导热系数明显下降,当SiO_(2)气凝胶含量为1%时,复合材料的导热系数最小,达到0.3331W/(m·K),相比酚醛树脂的隔热性能提高了12.30%,隔热性能最优,为酚醛树脂在隔热应用中提供了理论支持。In order to expand the engineering application of phenolic resin,SiO_(2) aerogel/phenolic resin composites with different proportions were prepared via direct mixing and atmospheric pressure drying method by adding SiO_(2) aerogel as a phase,and the thermal insulation performance of the composites was studied by SEM,infrared spectroscopy,specific surface area and pore size analysis.The results showed that SiO_(2) aerogel polymerized with phenolic resin by filling the large pores in phenolic resin to form a denser network,resulting in a significant decrease in the average pore size of phenolic resin and a noticeable decrease in thermal conductivity.When the proportion of SiO_(2) aerogel was 1wt.%,the thermal conductivity of the composite was the lowest,reaching 0.3331W/(m·K),which improved the thermal insulation performance by 12.30%compared with phenolic resin,providing theoretical support for phenolic resin in engineering applications.

关 键 词：SiO_(2)气凝胶 酚醛树脂 红外光谱 平均孔径 隔热性能 

分 类 号：TB324[一般工业技术—材料科学与工程]