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1、RheologyAdditivesForWaterBasedandSolventBasedSystemsPresentedby主講人AxelWoockerProductGroupManagerRheology流變助劑經(jīng)理July2009RheologyAdditiveCharacterisation7/21/2009,Page2,RheologyJuly2009BYK-410,BYK-411,BYK-420Liquidthixotropefamily–Viscosityprofile液體觸變-粘度曲線一覽圖hviscosity(Pa·s)粘度hhh(Pa·s)100Storage貯存Tra
2、nsportation運(yùn)輸Production生產(chǎn)10Leveling流平Stirring攪拌Application施工Settling沉降Sagging流掛Rotationalviscometer旋轉(zhuǎn)粘度計(jì)1BrookfieldFlowcup4mm涂4杯Krebs/StormerICIcone/plate椎板粘度計(jì)0,10.0010.010.1110100100010000shearrate剪切速率D(1/s)LOWSHEARMEDIUMSHEARHIGHSHEAR7/21/2009,Page3,RheologyJuly2009DefinitionofTerms-NewtonionFlo
3、wBehaviorViscosityCurve術(shù)語(yǔ)的定義–牛頓型流動(dòng):粘度曲線h粘度viscositycurve粘度曲線Viscositynewtonianflow:h=const.牛頓型流動(dòng):h=常數(shù).shearrate剪切速率D7/21/2009,Page4,RheologyJuly2009ViscosityProfilewithPseudoplasticFlowControlAdditives含假塑性流動(dòng)控制助劑的粘度范圍Highermolecularweightbasedproducts高分子量產(chǎn)品e.g.:Polyamides聚酰胺(e.g.BYK-430/431)Casto
4、roilderivatives蓖麻油衍生物Polyurethane聚氨酯(e.g.BYK-425)100Alkalineswellableemulsions堿溶脹性乳液Cellulosic纖維素(Pa·s)hhighermolecularweightchainsatrest,tangled,structurebuildsupviaassoziationwithresinandpigments10highmolecularweightchainsathighshear,高分子量鏈在靜止時(shí)纏結(jié)，通過(guò)樹(shù)脂和顏料間的締合形成結(jié)構(gòu)untanglement,orientedinflowdirec
5、tion高分子量鏈在高剪切力下互相糾纏，按流動(dòng)方向定向viscosity粘度1Settling沉降–leveling/sagging流平/流掛Grinding研磨Storage貯存Transportation運(yùn)輸Stirring攪拌Application施工0,10.0010.010.1110100100010000shearrate剪切率D(1/s)7/21/2009,Page5,RheologyJuly2009ThixotropicFlowBehavior-TimeDependency觸變性流動(dòng)–與時(shí)間有關(guān)solcurve溶解曲線h粘度Viscositygelcurve膠凝曲線shea
6、rrate剪切速率D7/21/2009,Page6,RheologyJuly2009ViscosityProfilewithThixopropicFlowControlAdditives含觸變性流動(dòng)控制助劑的粘度范圍additiveparticlesbuildup3D-networkLowerparticlesizebasedproductsviahydrogenbondings低顆粒大小產(chǎn)品e.g.:通過(guò)氫鍵，助劑顆粒建立起3維結(jié)構(gòu)Ureachemistry脲化學(xué)(BYK-410,411,420)Claybasedproducts膨潤(rùn)土產(chǎn)品(Bentonites)100Fumeds
7、ilica氣相二氧化硅(Aerosil)(Pa·s)h10particlesorientedintheflowdirection,nonetworkformationundershear顆粒按流動(dòng)方向定向，在剪切力下沒(méi)有網(wǎng)絡(luò)結(jié)構(gòu)viscosity粘度1Settling沉降–leveling/sagging流平/流掛Grinding研磨Storage貯存Transportation運(yùn)輸Stirring攪拌Applicati
