©1994-2010ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.:(1973-),(),(,100042):(SEM),:;;:TQ127.2:A:1671-6558(2006)03-16-06StudyonSurfaceModificationofUltrafineSilicaWangJiao(BeijingVocational&TechnicalInstituteofIndustry,Beijing100042,China)Abstract:Accordingtotheprecipitationtrial,carriedoutinthefiltrateofdissolvingdiatomite,theauthorob2tainedthebestprecipitationconditionsandthesilicaproduct,inwhichprimalparticleisnanometer.Thisarti2clemainlyresearchesonthetrialofmodifyingsilica,andanalyzestheeffectofphysicochemicalpropertiesofsili2cas,whichincludestheparticlesize,whitedegree,bulkdensity,oilabsorbingcapacity,specificsurfacearea,porevolumeandsurfacemorphologyoftheproducts.Ofcourse,thiseffectwasbroughtbythekind,amountandaddingtimeofthemodifyingagent.Scanningelectronmicroscope(SEM)photosofsomesamplesshowedthattheprimalparticlesofthemodifyingproductsarestillnanometer,andthemodifyingagentsusedinthepreparingprecipitatedsilicacontributedtodispersingparticlesofsilica.Keywords:precipitatedsilica;surfacemodifying;modifyingagent(SiO2nH2O),SiO2(90%),10nm40nm,,2.0t/m32.6t/m3,1750,,,,1,,,,,,,,,,,,,,:5320067JOURNALOFBEIJINGVOCATIONAL&TECHNICALINSTITUTEOFINDUSTRY.3Vol.5Jul.2006©1994-2010ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.(1)Si-OH+Cl-Si(CH3)3vSi-O-Si(CH3)3+HCl(2)Si-OH+CH3-CH2-Si(OC2H5)3vSi-O-Si-CH2-CH3+C2H5OH(3)Si-OH+CH3-Si-N-Si(CH3)2v2Si-O-Si-(CH3)3+NH3(4)2,4(DMC)(D4)Si-OH+HO-[(CH3)2SiO]nHvSi-O-[(CH3)2SiO]nH+H2O(5),,,,22.1(),,,,105,,:2.211(d50)(m)(g/cm3)(cm3/g)(m2/g)(cm3/g)6.3097.60.202.567181.670.29X-(XRD),11X-XRD,21630,(SEM)22a2b470002a,,50nm2b,20m,713:©1994-2010ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.(40000)bSEM(7000)2SEM22A-151CH2=CHSi(OCH2CH3)3A-189HS(CH2)3Si(OCH3)3KH-550NH2(CH2)3Si(OCH2CH3)3OP10RO(CH2CH2O)10HHO(C2H4O)11HC16H22O433BT-1500DN-BST-2000/ST-08AJA2003METTLERTOLEDOAL204-()X-D/MAX2500-PC(Rigaku)S-3500N33.1,,,,d50,d5050%33815©1994-2010ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.(),,,,,,,,,,,,66,A-151,1.5%,,2.650cm3/g,A-189,,,A-189,3.57913:©1994-2010ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.(ISO5974-1:1994E)A,A-1516%A-1893%6%,200m2/g,240.30m2/g6%A-189KH-550OP-10,()160m2/g,C,4.5%KH-550,125.37m2/g3.688,1.5%A-151,,0.40cm3/g,1.5%A-189,0.18cm3/g3.7,,,,,6.0%A-151,(SEM)99a9bA-15147000SEM9a,2SEM,9baSEM(40000)bSEM(7000)9A-151SEM025©1994-2010ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.(1)1.5%A-151,,d506.32m,,,3%OP-10,,12.45m(2)A-189,,,(3)OP-10,(4)A-151,A-189,(5)6%A-189,,240.30m2/g,KH-550OP-10,160m2/g,C(6)(7),:,50nm,,,:[1],.[J].,1997,(1)[2],.[J].(),2002,1(6)[3],,,.[J].,2002,34(1)[4].()[J].,2000(1)[5].[J].,1994,(3)(:)(15)LINUXC++,(RTCPP:RealTimeCooperativeProcessingProtocol),,5,,,,,,,,,:[1],,.[J].,2001,23(4)[2],,.[J].,2001,31(2)[3],,.VME[J].,1997,(1)(:)123: