高浓度酸性硅溶胶的制备技术

(,201800),,,,TQ12712A1000-6613(2003)05-0512-04pH,,,,,,[15],[1,2],1111:,;;,;,,,,20%3,,(1)25%,,,pH23(2)()pH110115,2448h(3),pH56,,pH215410(4)(NaOH,KOH),pH7151110(5),,,(6),pH23,112,,Snowtex-0,,12,,,14NaOH2002-11-25;2003-02-28(1977),,021-59553998-3272152003225CHEMICALINDUSTRYANDENGINEERINGPROGRESS1Snowtex-0Snowtex-0NSA-20NSA-25NSA-30SiO2/%2021202125263032Na2O/%01020102010201020103pH(25)34210310210310210310pHS(25)11121115111211131116111711201121(25)/mPas3355NDJ-1/nm102081210202030/0000/d180360180180:NSA-20,NSA-25,NSA-30;20211pHpH1125%1,pH(210),pH;pH(2pH4),,;pH56,,[5],,,,,,,,,pH,,pH,;,pH,21222(30%)2,S,,,,,1020nm,213[1,2],(3),,,,3155:,011mol/L,15%(32014nm),500g/g,325%214,(4),,,,,,[6]DLVO[7],,,,,:,,,(),,,,,DLVO,,,4,,,,,,3,,,1,,.[J].,1990,26(4):6546592,,.[J].,1992,28(2):2502543.[J].,1989,(3):45494.[J].,1996,(2):27295,.[J].,1995,29(6):326328;3356,.[M].(2),:,19977.[M].:,1978.239415200322PreparationofAcidicSilicaSolofHighConcentrationXuNianqiang,GuJianxiang,LuoKang,ZhengSongbao(ShanghaiInstituteofNuclearResearch,ChineseAcademyofSciences,Shanghai201800)AbstractThisstudyprovidesamethodforthepreparationofhighconcentrationandlowviscosityacidicsilicasol.Wehavefoundthatthediameterofsiliconparticleisveryimportantforthestabilityandviscosityoftheacidicsilicasol.Thelargerthediameteroftheparticle,thebetterthehighconcentrationandlowviscosityacidicsilicasolprepare.Keywordsacidicsilicasol,stability,preparation()(2003)(:)(:):;;;:;;;;,,,,16,200(2003),;:;;;;,,,16,150,;,,,,2003,:(100810):38::010-68313344380338110512683508695155: