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Epoxy Technology EPO-TEK® 305 Spectrally Transparent Epoxy

Category Polymer , Thermoset , Epoxy
Manufacturer Epoxy Technology
Trade Name EPO-TEK®
Port Ningbo port,China
Trade Terms FOB, CFR, CIF
Payment Terms L/C, T/T, Western Union
Download PDF Epoxy Technology EPO-TEK® 305 Spectrally Transparent Epoxy.pdf
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Material Notes:
Product Description: EPO-TEK® 305 is a two component, semi-rigid, optical grade epoxy for semiconductor packaging of fiber optics, optoelectronics and medical devices. It is an electrically and thermally insulating epoxy. Advantages & Application Notes: Capable of transmitting light in the UV range. %Transmission from 248 to 400 nm may be realized. Tg and Shore D values are indicative of a somewhat “semi flexible or semi rigid” epoxy. It can be used for low stress applications in optics. Low viscosity, water-like epoxy formulation. This allows for application by pouring, dip coating, brushing, or microdispensing methods.Versatility in curing from 23°C to 80°C range. This allows many types of low cost plastic substrate or housings to be used. Suggested applications: Optics:Index matching epoxy for adhesive and coating applications with Scientific / OEM instruments and sensor devices LED potting and encapsulation; LCD glass-glass or glass-PET laminations Fiber Optics: potting or sealing the fiber into the snout of the opto-package in order to provide stress relief.PCB / General: low stress potting of electronics as a clear encapsulant, COB glob top encapsulant.Information Provided by Epoxy Technology
Physical Properties Metric English Comments
Specific Gravity 0.870 g/cc
0.870 g/cc
Part B
1.25 g/cc
1.25 g/cc
Part A
Viscosity 150 - 250 cP

@Temperature 23.0 °C
150 - 250 cP

@Temperature 73.4 °F
100 rpm
Mechanical Properties Metric English Comments
Hardness, Shore D 66
66
Tensile Modulus 0.692 GPa
100 ksi
Storage
Shear Strength 13.0 MPa
1880 psi
Lap
>= 23.4 MPa
>= 3400 psi
Die
Thermal Properties Metric English Comments
CTE, linear 31.0 µm/m-°C
17.2 µin/in-°F
Below Tg
148 µm/m-°C
82.2 µin/in-°F
Above Tg
Maximum Service Temperature, Air 100 °C
212 °F
Continuous
200 °C
392 °F
Intermittent
Minimum Service Temperature, Air -55.0 °C
-67.0 °F
Continuous
-55.0 °C
-67.0 °F
Intermittent
Glass Transition Temp, Tg >= 35.0 °C
>= 95.0 °F
Dynamic Cure 20—200°C /ISO 25 Min; Ramp 10—200°C @ 20°C/Min
Decomposition Temperature 270 °C
518 °F
Degradation Temperature
Optical Properties Metric English Comments
Refractive Index 1.4763

@Wavelength 589 nm
1.4763

@Wavelength 589 nm
uncured
Transmission, Visible >= 91 %

@Wavelength 250 nm
>= 91 %

@Wavelength 250 nm
Spectral
>= 97 %

@Wavelength 300 nm
>= 97 %

@Wavelength 300 nm
Spectral
>= 98 %

@Wavelength 400 - 1600 nm
>= 98 %

@Wavelength 400 - 1600 nm
Spectral
Electrical Properties Metric English Comments
Volume Resistivity <= 2.00e+13 ohm-cm
<= 2.00e+13 ohm-cm
Dielectric Constant 4.46

@Frequency 1000 Hz
4.46

@Frequency 1000 Hz
Dissipation Factor 0.026

@Frequency 1000 Hz
0.026

@Frequency 1000 Hz
Processing Properties Metric English Comments
Cure Time 60.0 min

@Temperature 65.0 °C
1.00 hour

@Temperature 149 °F
1440 min

@Temperature 23.0 °C
24.0 hour

@Temperature 73.4 °F
Pot Life 60 min
60 min
Shelf Life 12.0 Month

@Temperature 25.0 °C
12.0 Month

@Temperature 77.0 °F
Descriptive Properties Value Comments
Color Clear/Colorless
Part A
Clear/Colorless
Part B
Consistency Pourable liquid
Mix Ratio By Weight 100:2.8
Number of Components Two
Weight Loss 1.22%
200°C
3.99%
250°C
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