CONFIDENTIAL

R12.0

Material Characterization for

CAE Simulation

Technical Research Division

Rheology Laboratory

2

> General

– CAE and physical properties measurement … P. 3

– Laboratory equipments … P. 4

– Sample preparation … P. 5

> Measurement of thermoplastic

– Viscosity … P. 7

– Density (P-v-T) … P. 9

– Crystallization … P. 11

– Thermal properties (Cp, k) … P. 12

– Mechanical properties (E, ν) … P. 14

> Measurement of thermoset

– Reactivity (cross-linking, curing kinetics) … P. 16

– Chemorheology of reactive material … P. 17

Content

3

Constitutive equation τ = f (η, deformation, …)

Conversion rate, R Heat capacity, Cp

Thermal conductivity, k

Density, ρ (P-v-T);

v P, T = f (α)

Physical properties considered in CAE

:u

TkT

t

TCp

gpDt

D τ

u

0 RjX

0

u

t

Thermodynamic

state

END FLOW PROPERTY to POST DEFORMATION

Thermoset: E(t, T, C)

Thermoplastic: E(t, T); Poisson ratio,ν

Mass

balance

Energy

balance

Momentum

balance

Cross-

linking

kinetics

4

Laboratory equipments

MCR 502 Rotation and

oscillation

test for

viscoelastic

property

CR-6000 Viscosity

Rheograph RG25 k, viscosity,

counter pressure

equipped

DSC 8500

Heating rate: 750 ℃ /min

Cooling rate: 600 ℃ /min

Min temp -180 ℃ (LN2)

pvT100 P-v-T

5

Sample preparation - Storage and treatment

Freezer

Vacuum oven

Halogen moisture analyzer

Mettler Toledo, HG63

Moisture level 0.01%

Analytical balance

Mettler Toledo, AE100+

Sensitivity 0.1 mg

6

Measurement of thermoplastics

7

Viscosity measurement

Rotational rheometer Drag flow

Capillary rheometer Pressure driven flow

Non-Newtonian

8

Viscosity data

Curve fitting:

turn scattered data points into usable

material function for CAE analysis

9

Density (P-v-T)

10

5 °C/min 200 °C/min

P-v-T of Semicrystalline Polymer

> Effect on different cooling rate

11

Crystallization coupled w/ P-v-T

12

Thermal properties - Thermal Conductivity (k)

13

Thermal properties - Heat capacity (Cp)

Differential Scanning Calorimeter

Perkin-Elmer, DSC 8500

Heating rate: 750 ℃ /min

Cooling rate: 600 ℃ /min

Min temp -180 ℃ (LN2)

14

Mechanical properties (E, ν)

> Young’s modulus will be tested at different temperature

and different level of cross-linking.

15

Measurement of thermoset

16

Reactivity (cross-linking, curing kinetics)

Conversion vs. Heating rate

17

Chemorheology of reactive material

Shear rate = 1/s

> Viscosity-Conversion Relationship

Thank you for your attention!