EPO-TEK® 921-FL

About
A two component, high Tg, electrically insulating, thermally conductive epoxy designed for thermal management applications found in semiconductor, hybrid microelectronics, PCB, and optical industries. It can be an adhesive for mounting heat sinks and substrates, a seal for many types of packages, or a thermal potting compound. It is a low viscosity version of EPO-TEK® 921.&&

Product Description
Generic环氧树脂
Material StatusCommercial: Active
FeaturesLow Viscosity,Thermal conductivity,Insulation
AvailabilitysAfrica & Middle East ,North America,Asia Pacific,Europe

Technical Data
PHYSICALNominal valueUnitTest method
Particle sizeµm

Supplementary informationNominal valueUnitTest method
Degradation Temperature372
Die Shear Strength(>20 kg,23℃)46.9MPa
working temperature
Continuous-55 to 200
Intermittent-55 to 300
Storage Modulus(23℃)10.7GPa
Thixotropic index2.60
Heating reduction
200℃0.32%
250℃0.50%
300℃1.0%

Uncured PropertiesNominal valueUnitTest method
colour
Amber
Grey
Density
Part B1.02g/cm³
Part A2.38g/cm³
viscosity
23℃9.0 to 15Pa·s
Curing time
150℃1.0hr
storage stability360min

Cured PropertiesNominal valueUnitTest method
Shore hardness
Shaw’s D87
lap shear strength
23℃9.05MPa
Relative permittivity
1 kHz5.94
Volume resistivity
23℃> 6.0E+13ohms·cm
Dissipation factor
1 kHz9.0E-3

THERMALNominal valueUnitTest method
2.3E-5cm/cm/℃
7.7E-5cm/cm/℃
Glass transition temperature> 90.0
Linear coefficient of thermal expansion
MD
Thermal conductivity coefficient1.1W/m/K
Thermosetting components
Component A按重量计算的混合比: 100
Component B按重量计算的混合比: 2.2
Storage period
23℃26wk

Notes
1. Typical properties: these are not to be construed as specifications.
2. Dynamic Cure 20-200°C/ISO 25 Min; Ramp -10-200°C @ 20°C/Min
3. Below Tg
4. Above Tg
5. Part B
6. Part A
7. 20 rpm
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