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摘要
以甲基三甲氧基硅烷(MTMS)为前驱体,通过溶胶-凝胶反应和常压干燥法实现了二氧化硅(SiO2)气凝胶的制备;并将SiO2气凝胶与聚二甲基硅氧烷(PDMS)混合应用到棉织物上,制备了超疏水功能棉织物。分别探讨了制备SiO2气凝胶和超疏水棉织物的主要影响因素。结果表明,在草酸与MTMS摩尔配合比为1.6×10-4:1,凝胶化温度为40℃,老化温度为40℃条件下,制备的SiO2气凝胶具有连续多孔微观粗糙结构,密度为106.4kg/m3,孔隙率达到95.16%。在SiO2气凝胶用量为4%(wt,质量分数),PDMS用量为4%(wt,质量分数)条件下,整理后棉织物的接触角为156.4°,实现了超疏水性能。
Abstract
SiO2 aerogel was prepared via sol-gel method by atmospheric drying using methyltrimethoxylsilane (MTMS) as the precursor.The cotton fabrics were treated by the mixture of SiO2 aerogel and polydimethylsiloxane (PDMS) to fabricate superhydrophobic cotton fabrics.The predominant factors influencing the preparation of SiO2 aerogel and superhydrophobic cotton fabrics were discussed,respectively.The results showed that when the mole ratio of oxalic acid to MTMS was 1.6×10-4:1,the gelling temperature was 40℃ and the aging temperature was 40℃,the prepared SiO2 aerogel had continuous porous microstructure with the density of 106.4kg/m3 and the porosity of 95.16%.When SiO2 aerogel dosage was 4wt%(mass fraction) and PDMS dosage was 4wt%(mass fraction),the treated cotton fabric showed excellent superhydrophobicity with the water contact angle of 156.4°.
关键词
SiO2气凝胶
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溶胶-凝胶法
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超疏水
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棉织物
Key words
SiO2 aerogel
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sol-gel method
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superhydrophobic
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cotton fabrics
基于SiO2气凝胶的超疏水功能棉织物的制备及性能研究[J].
化工新型材料, 2019, 47(2): 260-267 DOI:
[1] 陈安伏,黄汉雄,关伟盛.超疏水高分子材料表面的微结构设计及其可调的黏附性[J].高分子学报,2015(3):245-251.
[2] 潘洪波,汪存东,喻华兵,等.超疏水表面制备及其应用的研究进展[J].化工新型材料,2014,42(7):208-210.
[3] 王宗乾,何铠君,吴开明,等.自清洁功能性纺织品研究进展[J].现代纺织技术,2014(1):60-64.
[4] 薛朝华,尹伟,贾顺田.纤维基超疏水功能表面制备方法的研究进展[J].纺织学报,2012,33(4):146-152.
[5] 李恒,卢珣,吴叔青.超疏水有机硅涂层的制备与性质研究[J].功能材料,2014,45(S2):97-100.
[6] 宋圆,许祖勋,张创,等.纳米材料在纺织领域的最新研究进展[J].材料导报,2012,26(5):6-9.
[7] 吴国友,余煜玺,程璇,等.甲基三甲氧基硅烷对块状SiO2气凝胶性能和结构的影响[J].硅酸盐学报,2009,37(7):1206-1211.
[8] Kim G S,Hyun S H.Synthesis of window glazing coated with silica aerogel fims via ambient drying[J].Journal of Non-Crystalline Solids,2003,320(1/3):125-132.
[9] Jin H,Tian X L,Ikkala O,et al.Preservation of superhydrophobic and superoleophobic properties upon wear damage[J].ACS Applied Materials & Interfaces,2013,5(3):485-488.
[10] Hayase G,Nonomura K,Hasegawa G,et al.Ultralow-density,transparent,superamphiphobic boehmite nanofiber aerogels and their alumina derivatives[J].Chemisty of Material,2015,27(1):3-5.
[11] Li F,Du M,Zheng Q.Dopamine/silica nanoparticle assembled microscale porous structure for versatile superamphiphobic coating[J].ACS Nano,2016,10(2):2910-2921.
基金资助
国家自然科学基金项目(51703123);上海高校青年教师培养资助计划项目(ZZGJD13038);上海工程技术大学大学生创新训练项目(cx1709009)
