Rheology Application课件.pptVIP

Rheology and Application流变学、流变仪及其应用; 研究材料的流动与变形 ;Non linear Flow Behavior非线性流动行为;Elastic and viscous deformations弹性和粘性变形;Linear Non-linear Behavior线性和非线性行为;Non linear Flow Behavior非线性流动行为;Flow and viscometry流动与粘度计;Flow – Viscometry流动 － 粘度计;Typical Viscosity Values (Pa s)典型的粘度值 (Pa s);Multi-step flow – Viscometry多步流动 － 粘度法;Types of Flow curves流动曲线的分类;Viscosity and flow curve models粘度和流动曲线模型;Thixotropic loop触变环;Thixotropic loop触变环;Stress ramp in stress controlled mode应力扫描;Yield stress in a stress ramp屈服应力;Relaxation and oscillation松弛和动态振荡测试;Silicone putty test粘弹性材料测试;Relaxation time松弛时间;Dynamic Mechanical Analysis动态力学分析;Phase angle相位角;Viscoelastic Parameters粘弹性参数;Dynamic Mechanical Behavior 动态力学行为 ;Non linear response非线性响应;Non linear behaviour非线性行为;Rheological Characterization流变性能表征;Summary 小结;Definition of Rheology;Flow and Deformation Parameters: Shear Stress, Shear Strain, Shear Rate;Classical Extremes: Elasticity;Classical Extremes: Viscosity;Linearity vs. Non-Linearity;Steady Simple Shearing Flow;Terms and Units;Geometry of Shear for Rotational Rheometers;Set gap to be at least 10 x particle or droplet size [consider extremes of size distribution] Minimum gap should be 1000 microns;Cone and Plate;Cone Angles and Diameters;Limitations of Cone Plate for Dispersions - Fixed Gap!;Spring Dashpot Models;Models for Viscoelasticity;Creep Retardation Curve;Cone Plate Geometry;弹性：理想固体行为 ;牛顿法则 ：理想流体法则;固体－完全弹性回复 流体－完全流动变形;常用材料(一般材料)的行为描述; G’ 弹性模量 (t’/g0) : 弹性储存能量指标 G”粘性模量 (t”/g0) : 变形消耗能量指标 G*复模量 (S(G’,G”)) : 总变形能量指标 tand (G”/G’) : 损耗因子;与时间有关的粘弹性行为PDMS的固体和液体特性;Viscoelasticity Defined;Linear Viscoelasticity Defined;Classical Extremes: Elasticity;Classical Extremes: Viscosity;Response for Classical Extremes;Linearity vs. Non-Linearity;DMA Viscoelastic Parameters: Damping, tan ?; 研究材料的流动与变形 ;流变学的研究范围;流变学在日常工作中无处不在 －制造和使用产品 ; 流变学使生活更有趣 ;弹性：理想固体行为 ;牛顿法则 ：理想流体法则;固体－完全弹性回复 流体－完全流动变形;常用材料(一般材料)的行为描述; G’ 弹性模量 (t’/g0) : 弹性储存能量指标 G”粘性模