Polyme Analysis 2010 Part 9 ppsx

DMA Viscoelastic Parameters: Damping, tan δPhase angle δ G* G' G" Dynamic measurement represented as a vector lThe tangent of the phase angle is the ratio of the loss modulus to the stor

DMA Viscoelastic Parameters: Damping, tan δ

Phase angle δ G*

G'

G"

Dynamic measurement

represented as a vector

lThe tangent of the phase angle is the ratio of the

loss modulus to the storage modulus

tan δ = G"/G'

l"TAN DELTA" (tan δ) is a measure of the

damping ability of the material

DMA 2980 : Schematic

UNIQUE PATENT-PENDING DESIGN

SAMPLE BIFILAR-WOUND FURNACE

CLAMPS

AIR BEARING SLIDE

AIR

BEARING

OPTICAL

ENCODER

DRIVE MOTOR

LOW MASS, HIGH STIFFNESS CLAMPING FIXTURES

DMA : Dual Cantilever Mode

Sample

Stationary Clamp

Movable clamp

DMA : Single Cantilever Mode

Sample

Stationary

Clamp

Movable clamp

DMA : 3-Point Bend Mode

Moveable Clamp

Force

Sample

Stationary Fulcrum

DMA : Tension Mode

Movable clamp

Sample (film, fiber,or thin sheet) Stationary

Clamp

DMA : Shear Sandwich Mode

Movable Clamp

Stationary Clamp Sample

DMA : Compression Mode

Stationary clamp Sample

Movable Clamp

PSA: Glass Transition Measurement