In order to expand the engineering application of phenolic resin,SiO2 aerogel/phenolic resin composites with different proportions were prepared via direct mixing and atmospheric pressure drying method by adding SiO2 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 SiO2 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 SiO2 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.
[1] Akimov Y K.Fields of application of aerogels (review)[J].Instruments and Experimental Techniques,2003,46(3):287-299.
[2] Mazrouei-Sebdani Z,Begum H,Schoenwald S,et al.A review on silica aerogel-based materials for acoustic applications[J].Journal of Non-Crystalline Solids,2021,562:120-770.
[3] Baetens R,Jelle B P,Gustavsen A.Aerogel insulation for building applications:a state-of-the-art review[J].Energy and Buildings,2011,43(4):761-769.
[4] Maleki H,Duraes L,Portugal A.An overview on silica aerogels synthesis and different mechanical reinforcing strategies[J].Journal of Non-Crystalline Solids,2014,385:55-74.
[5] Cai H F,Jiang Y G,Chen Q,et al.Sintering behavior of SiO2 aerogel composites reinforced by mullite fibers via in-situ rapid heating TEM observations[J].Journal of the European Ceramic Society,2020,40(1)127-135.
[6] 罗丹,龙丽娟,秦舒浩,等.玻璃纤维和碳纤维增强二氧化硅气凝胶复合材料的制备及性能研究[J].化工新型材料,2022,50(4):161-165.
[7] 张怡,葛欣国,卢国建,等.硅酸铝纤维和玻璃纤维复合二氧化硅气凝胶材料的制备与性能[J].无机盐工业,2020,52(10):68-71.
[8] 李可,陈林,牛胜杰,等.常压干燥工艺制备SiO2纳米纤维——SiO2复合气凝胶及其表征[J].现代化工,2018,38(8):172-175.
[9] 高文杰,杨自春,李昆峰,等.聚酰亚胺纤维增强SiO2气凝胶的制备及表征[J].材料导报,2019,33(2):714-718.
[10] 冯坚,高庆福,冯军宗,等.纤维增强SiO2气凝胶隔热复合材料的制备及其性能[J].国防科技大学学报,2010,32(1):40-44.
[11] 王斌,罗晓宇,赵益君,等.SiO2气凝胶增强碳泡沫复合材料的制备工艺及性能[J].硅酸盐学报,2022,50(5):1316-1324.
[12] Wu X,Man J,Liu S,et al.Isocyanate-crosslinked silica aerogel monolith with low thermal conductivity and much enhanced mechanical properties:fabrication and analysis of forming mechanisms[J].Ceramics International,2021,47(19):26668-26677.
[13] Xu B,Cai J Y,Xie Z,et al.An improved method for preparing monolithic aerogels based on methyltrimethoxysilane at ambient pressure Part Il:microstructure and performance of the aerogels[J].Microporous &.Mesoporous Materials,2012,148(1):145-151.
[14] 吴文杰.SiO2气凝胶及其复合材料的制备及性能研究[D].济南:山东大学,2020.
[15] 刘昊,张利慧,于迎春,等.SiO2气凝胶/聚酰亚胺复合薄膜的制备及其隔热性能研究[J].化工新型材料,2020,48(6):93-96,102.
[16] 汪纯宇,史非,刘敬肖.SiO2气凝胶/硅藻泥复合涂料的制备及隔热性能[J].大连工业大学学报,2022,41(1):74-78.
[17] 刘昊.二氧化硅气凝胶/聚合物复合材料的制备与性能研究[D].北京:北京化工大学,2019.
[18] Monika K,George T,Richard L,et al.FT-IR studies on plasticization of silicate glass with ionic liquids (conversion to silicate polymers)[J].Journal of Non-Crystalline Solids,2021,561:120757.
[19] 张建可.聚氨酯软泡沫塑料隔热性能分析研究[J].真空与低温,2006,12(3):180-185.
[20] Reglero R J,Saiz A C,Dumon M,et al.Production cellular structure and thermal conductivity of microcellular (methyl methacrylate)-(butyl acrylate)-(methyl methacrylate) triblock copolymers[J].Polym Int,2011,60:146-152.
[21] 雷世文,郭全贵,史景利,等.纳米孔径酚醛树脂基泡沫碳前驱体的隔热性能[J].宇航材料工艺,2009,39(5):32-35.
PDF
