Lord Adhesives Thermoset™ UR-325 Urethane Encapsulant System

Login to see your most recently viewed materials here. Or if you don't have an account with us yet, then click here to register.

(Viewing data as-entered. Click here to return)

Lord Adhesives Thermoset™ UR-325 Urethane Encapsulant System
Categories:	Polymer; Thermoset; Polyurethane, TS; Thermoset Polyurethane, Adhesive
Material Notes:	LORD Thermoset UR-325 encapsulant is a two-component urethane system designed for encapsulating delicate, pressure or shock sensitive electronic components. Thermoset UR-325 encapsulant cures to a low modulus material using room temperature cure. If stored or shipped at cooler temperatures, Thermoset UR-325 hardener may crystallize. If crystals appear, gently warm hardener at 32-46°C and periodically stir as it is liquefying. Heating period should not exceed three hours as excessive heating will cause dimerization. Features: provides good adhesion to a variety of materials. can be used on parts and devices that experience operating temperatures from -90°C to +130°C. provides excellent thermal shock resistance; exhibits exceptional hydrolytic stability. All information provided by Lord.
Vendors:	No vendors are listed for this material. Please click here if you are a supplier and would like information on how to add your listing to this material.
Printer friendly version Download as PDF Download to Excel (requires Excel and Windows) Export data to your CAD/FEA program Add to Folder:

Physical Properties	Original Value	Comments

Specific Gravity	0.980 g/cc	Mixed
Viscosity	4000 cP @Temperature 25.0 °C	Mixed

Mechanical Properties	Original Value	Comments
Hardness, Shore A	60	ASTM D 2240
Tensile Strength	770 psi	cured; ASTM D638
Elongation at Break	225 %	ASTM D 638

Electrical Properties	Original Value	Comments
Volume Resistivity	3.00e+15 ohm-cm @Temperature 25.0 °C	cured; ASTM D 257
Dielectric Constant	2.9 @Frequency 1e+6 Hz, Temperature 25.0 °C	cured; ASTM D 150
Dielectric Strength	650 V/mil @Temperature 25.0 °C	cured
Dissipation Factor	<= 0.028 @Frequency 1e+6 Hz, Temperature 25.0 °C	cured; ASTM D 150

Thermal Properties	Original Value	Comments
CTE, linear	240 µm/m-°C	cured; ASTM D 3386
Thermal Conductivity	0.200 W/m-K	cured
Maximum Service Temperature, Air	130 °C
Minimum Service Temperature, Air	-90.0 °C
Glass Transition Temp, Tg	-76.0 °C	cured

Processing Properties	Original Value	Comments
Working Life	20.0 - 25.0 min @Temperature 25.0 °C	Mixed
Shelf Life	6.00 Month @Temperature 25.0 °C	UR-325 Resin
	12.0 Month @Temperature 25.0 °C	UR-325 Hardener

Descriptive Properties
Appearance	Amber Liquid	UR-325 Hardener
	Black Liquid	UR-325 Resin
	Black Liquid	Mixed

Some of the values displayed above may have been converted from their original units and/or rounded in order to display the information in a consistent format. Users requiring more precise data for scientific or engineering calculations can click on the property value to see the original value as well as raw conversions to equivalent units. We advise that you only use the original value or one of its raw conversions in your calculations to minimize rounding error. We also ask that you refer to MatWeb's terms of use regarding this information. Click here to go back to viewing the property data in MatWeb's normal format.

PLORD9295 / 232651

	Advertise with MatWeb!
	Data sheets for over 180,000 metals, plastics, ceramics, and composites.
	HOME • SEARCH • TOOLS • SUPPLIERS • FOLDERS • ABOUT US • FAQ • LOG IN

System Message