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1、RheologyAdditivesForWaterBasedandSolventBasedSystemsPresentedby主讲人AxelWoockerProductGroupManagerRheology流变助剂经理July2009RheologyAdditiveCharacterisation7/21/2009,Page2,RheologyJuly2009BYK-410,BYK-411,BYK-420Liquidthixotropefamily–Viscosityprofile液体触变-粘度曲线一览图hviscosity(Pa·s)粘度hhh(Pa·s)100Storage贮存Tra
2、nsportation运输Production生产10Leveling流平Stirring搅拌Application施工Settling沉降Sagging流挂Rotationalviscometer旋转粘度计1BrookfieldFlowcup4mm涂4杯Krebs/StormerICIcone/plate椎板粘度计0,10.0010.010.1110100100010000shearrate剪切速率D(1/s)LOWSHEARMEDIUMSHEARHIGHSHEAR7/21/2009,Page3,RheologyJuly2009DefinitionofTerms-NewtonionFlo
3、wBehaviorViscosityCurve术语的定义–牛顿型流动:粘度曲线h粘度viscositycurve粘度曲线Viscositynewtonianflow:h=const.牛顿型流动:h=常数.shearrate剪切速率D7/21/2009,Page4,RheologyJuly2009ViscosityProfilewithPseudoplasticFlowControlAdditives含假塑性流动控制助剂的粘度范围Highermolecularweightbasedproducts高分子量产品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碱溶胀性乳液Cellulosic纤维素(Pa·s)hhighermolecularweightchainsatrest,tangled,structurebuildsupviaassoziationwithresinandpigments10highmolecularweightchainsathighshear,高分子量链在静止时缠结，通过树脂和颜料间的缔合形成结构untanglement,orientedinflowdirec
5、tion高分子量链在高剪切力下互相纠缠，按流动方向定向viscosity粘度1Settling沉降–leveling/sagging流平/流挂Grinding研磨Storage贮存Transportation运输Stirring搅拌Application施工0,10.0010.010.1110100100010000shearrate剪切率D(1/s)7/21/2009,Page5,RheologyJuly2009ThixotropicFlowBehavior-TimeDependency触变性流动–与时间有关solcurve溶解曲线h粘度Viscositygelcurve胶凝曲线shea
6、rrate剪切速率D7/21/2009,Page6,RheologyJuly2009ViscosityProfilewithThixopropicFlowControlAdditives含触变性流动控制助剂的粘度范围additiveparticlesbuildup3D-networkLowerparticlesizebasedproductsviahydrogenbondings低颗粒大小产品e.g.:通过氢键，助剂颗粒建立起3维结构Ureachemistry脲化学(BYK-410,411,420)Claybasedproducts膨润土产品(Bentonites)100Fumeds
7、ilica气相二氧化硅(Aerosil)(Pa·s)h10particlesorientedintheflowdirection,nonetworkformationundershear颗粒按流动方向定向，在剪切力下没有网络结构viscosity粘度1Settling沉降–leveling/sagging流平/流挂Grinding研磨Storage贮存Transportation运输Stirring搅拌Applicati
