PTM&W Industries PT8902 Two component urethane casting system

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PTM&W Industries PT8902 Two component urethane casting system
Categories:	Polymer; Thermoset; Polyurethane, TS
Material Notes:	PT8902 is a unique two-component urethane casting system that has very high cured properties, which allow it to produce extremely durable parts and shapes that have very good heat resistance. Three hardeners with different working times and very low mixed viscosity with PT8902 Part A make it very easy to handle and cast by hand pour or machine casting techniques. The low viscosity fills thin sections and complicated shapes with ease. The cured material is very tough, and it can be demolded from the toughest mold configuration without breaking. The natural white color of PT8902 can be easily tinted or pigmented for a broad range of colored parts. There is a black version of Part B2, for a cured color of black. PT8902 is Certified to USP Class VI requirements.
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Physical Properties	Original Value	Comments

Specific Gravity	1.11 g/cc	Part B
	1.11 g/cc	Part B1
	1.11 g/cc	Part B2
	1.15 g/cc	Part A with B, B1 or B2; ASTM D 1475
	1.17 g/cc	Part A
Density	1.15 g/cc	ASTM D792
Viscosity	80 - 100 cP	Part A; ASTM 2392
	495 cP	Mixed; ASTM D2393
	650 cP	Part B; ASTM 2392
	650 cP	Part B1; ASTM 2392
	650 cP	Part B2; ASTM 2392

Mechanical Properties	Original Value	Comments
Hardness, Shore D	85	ASTM D2240
Tensile Strength	10010 psi	ASTM D638
Elongation at Break	21.6 %	ASTM D638
Tensile Modulus	371200 psi	ASTM D638
Flexural Strength	15570 psi	ASTM D790
Flexural Modulus	386600 psi	ASTM D790
Compressive Strength	11940 psi	ASTM D695
Compressive Modulus	357500 psi	ASTM D695
Izod Impact, Notched	2.10 ft-lb/in	Method A; ASTM D256

Thermal Properties	Original Value	Comments
CTE, linear	60.9 µin/in-°F @Temperature 50.0 - 100 °C	ASTM D696
Deflection Temperature at 0.46 MPa (66 psi)	190 °F	ASTM D648
Glass Transition Temp, Tg	193 °F	Onset; ASTM D4065
	213 °F	Peak; ASTM D4065

Processing Properties	Original Value	Comments
Cure Time	2.00 - 2.50 hour @Temperature 65.6 °C	Pour into mold heated to 130°F. Cool, demold (as tested).
	16.0 hour @Temperature 82.2 °C	Post cure overnight @ 180°F (as tested).
Pot Life	1.50 min	4 fl.oz mass. Part B2; ASTM D2471
	6.00 - 7.00 min @Temperature 25.0 °C	4 fl.oz mass. Part B; ASTM D2471
	10.0 - 12.0 min @Temperature 25.0 °C	4 fl.oz mass. Part B1; ASTM D2471

Compliance Properties	Original Value	Comments
USP Class VI	Yes

Descriptive Properties
Color / Appearance	Black	Part A with B2
	clear	Part B
	clear	Part B1
	clear or black	Part B2
	Lt. amber	Part A
	White	Part A with B or B1
Demold Time (hrs)	2 - 3	@ 150-160°F
Mix Ratio	100 Parts A to 50 Parts B or B1	ASTM PTM&W
	100 Parts A to 60 Parts B2	ASTM PTM&W
Mix Ratio by weight	100 to 50	Resin to hardener. ASTM PTM &W
	100 to 60	Resin to Part B2 Black. ASTM PTM&W

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PPTMW9903 / 287684

USP Class VI Approved Adhesives for Medical Device Applications
Master Bond’s biocompatible adhesives are designed to meet the needs of medical device manufacturers. Compounds withstand various types of sterilization methods.

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