Epoxy Technology EPO-TEK® 302 Fast Setting, Optical Epoxy

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Epoxy Technology EPO-TEK® 302 Fast Setting, Optical Epoxy
Categories:	Polymer; Thermoset; Epoxy
Material Notes:	Product Description: EPO-TEK® 302 is a two component, fast-gelling, room temperature curing epoxy, designed for electronic, optical, medical, and general applications. Advantages & Application Notes: Due to its versatility, it may be used to adhere, seal, pot or encapsulate. Allows for % transmission in VIS and NIR range. It can be used as an adhesive in the optical pathway of light. Convenient and easy to use 1:1 mix ratio allows for hand, meter mix, or specialty packaging. Suggested applications: Field Assembly: mix and cure in the field. Fast gelling and curing in 2-3 hours is accomplished. Electronics: rapid prototyping of parts with fast curing epoxy – no need for oven cycle times. Optics: active alignment of optics such as lenses, prisms, diodes, filters, etc. to opto-circuit. Fiber Optics: “field curing” or field assembly of connectors and couplers; also suggested for fiber optic splicing. Medical: adhesion to most metals, plastics, ceramics, and glasses found in tubing, substrates or housing. General: arts and crafts repair, restoration, and hobbyists. Information Provided by Epoxy Technology
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Physical Properties	Original Value	Comments

Specific Gravity	0.900 g/cc	Part B
	1.20 g/cc	Part A
Viscosity	5000 - 10000 cP @Temperature 23.0 °C	20 rpm

Mechanical Properties	Original Value	Comments
Hardness, Shore D	73
Tensile Modulus	154000 psi	Storage
Shear Strength	>= 1700 psi	Die
	1756 psi	Lap

Electrical Properties	Original Value	Comments
Volume Resistivity	>= 2.00e+13 ohm-cm
Dielectric Constant	2.95 @Frequency 1000 Hz
Dissipation Factor	0.010 @Frequency 1000 Hz

Thermal Properties	Original Value	Comments
CTE, linear	52.0 µm/m-°C	Below Tg
	191 µm/m-°C	Above Tg
Maximum Service Temperature, Air	100 °C	Continuous
	200 °C	Intermittent
Minimum Service Temperature, Air	-55.0 °C	Continuous
	-55.0 °C	Intermittent
Glass Transition Temp, Tg	>= 40.0 °C	Dynamic Cure 20—200°C /ISO 25 Min; Ramp 10—200°C @ 20°C/Min
Decomposition Temperature	261 °C	Degradation Temperature

Optical Properties	Original Value	Comments
Refractive Index	1.5442 @Wavelength 589 nm	uncured
Transmission, Visible	>= 75 % @Wavelength 340 - 420 nm	Spectral
	>= 85 % @Wavelength 440 - 900 nm	Spectral
	>= 88 % @Wavelength 900 - 1600 nm	Spectral

Processing Properties	Original Value	Comments
Cure Time	2.00 hour @Temperature 23.0 °C
Pot Life	10 min
Shelf Life	12.0 Month @Temperature 25.0 °C

Descriptive Properties
Color	Clear/Colorless	Part A
	Clear/Colorless	Part B
Consistency	Pourable liquid
Mix Ratio by Weight	1:1
Number of Components	Two
Weight Loss	2.68%	200°C
	8.39%	250°C

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PPOXYT109 / 141148

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