CAJ | 학술논문

以浓氨水为催化剂、正硅酸乙酯(TEOS)为原料,通过种子生长法制得二氧化硅纳米球;进一步以十三氟辛基三乙氧基硅烷(F-8261)对二氧化硅纳米球的表面进行改性,得到氟烷基改性二氧化硅纳米球.利用IR、UV、TEM等手段对氟烷基改性纳米球进行了表征.结果表明,改性单体F-8261通过化学键结合在二氧化硅纳米球表面;通过改变催化剂的用量,可制得平均粒径分别为35 nm和86 nm的纳米球.用含氟烷基改性二氧化硅纳米球的乙醇溶液处理玻璃、基准混凝土,其表面与水的的静态接触角分别从32°和0°提高到104°和141°,表明处理过的基材表面具有良好的防水和防污性能.
이농안수위최화제、정규산을지(TEOS)위원료,통과충자생장법제득이양화규납미구;진일보이십삼불신기삼을양기규완(F-8261)대이양화규납미구적표면진행개성,득도불완기개성이양화규납미구.이용IR、UV、TEM등수단대불완기개성납미구진행료표정.결과표명,개성단체F-8261통과화학건결합재이양화규납미구표면;통과개변최화제적용량,가제득평균립경분별위35 nm화86 nm적납미구.용함불완기개성이양화규납미구적을순용액처리파리、기준혼응토,기표면여수적적정태접촉각분별종32°화0°제고도104°화141°,표명처리과적기재표면구유량호적방수화방오성능.
The process of preparing fluoroalkyl-containing silica nanospheres was described in this paper.Firsdy,SiO2 nanospheres were prepared via seeded growth method with ammonia water as the catalyst,TEOS as materials,and further surface modified by F-8261.The fluoroalkyl-containing silica nanospheres were characterized by a combination of IR,UV,and TEM analysis.The IR spectrum showed that F-8261 was connected with the surface of SiO2 nanospheres via O-Si chemical bond.By changing the amount of the catalyst,the fluoroalkyl-containing silica nanospheres with an average diameter(35nm,86 nm) were obtained,respectively.The fluoroalkyl-containing silica nanospheres could be used for treating glass and concrete.The surface-treated glass and concrete had good hydrophobic and anti-fouling performance,with surface contact angles of 104°and 141°,respectively.