Reynolds Mold Max® XLS® II eXtra Low-Shrinkage Tin Cure Silicone Rubber

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Reynolds Mold Max® XLS® II eXtra Low-Shrinkage Tin Cure Silicone Rubber
Categories:	Polymer; Thermoset; Silicone; Silicone Rubber
Material Notes:	Product Overview: Mold Max™ XLS™ II is a Shore 30A tin-catalyzed silicone rubber that exhibits very low long-term shrinkage. XLS™ II molds last longer than other silicones in production when casting chemically harsh resins such as epoxies and polyesters as well as urethane foams. Mix ratio is 100A:10B by weight. Pot life is 40 minutes and cure time is 24 hours at room temperature. Mold Max™ XLS™ II silicone will reproduce the finest detail and is suitable for a variety of industrial and art related applications including making production molds for, reproducing prototypes, furniture, sculpture and architectural elements. Mold Max™ XLS™ II can be thickened with THI-VEX™ additive for brush-on applications. Important; you must weigh Part A & B components using a gram scale to be successful with Mold Max™ XLS II. Vacuum degassing mixed material using a vacuum pump and chamber to remove entrapped air is recommended. Information provided by Reynolds Advanced Materials
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Physical Properties	Original Value	Comments

Specific Gravity	1.22 g/cc	ASTM D-1475
Viscosity	30000 cP	Mixed; ASTM D-2393
Linear Mold Shrinkage	0.0010 in/in	ASTM D-2566

Mechanical Properties	Original Value	Comments
Hardness, Shore A	30	ASTM D-2240
Tensile Strength	550 psi	ASTM D-412
Elongation at Break	375 %	ASTM D-412
100% Modulus	95.0 psi	ASTM D-412
Tear Strength	110 pli	Die B; ASTM D-624

Electrical Properties	Original Value	Comments
Volume Resistivity	9.00e+15 ohm-cm	ASTM D257
Dielectric Constant	3.4 @Frequency 100 Hz	ASTM D150
Dielectric Strength	>= 360 V/mil	ASTM D149
Dissipation Factor	0.0020 @Frequency 100 Hz	ASTM D150

Thermal Properties	Original Value	Comments
Thermal Conductivity	0.240 W/m-K	ASTM D-1461
Maximum Service Temperature, Air	205 °C
Minimum Service Temperature, Air	-53.0 °C

Processing Properties	Original Value	Comments
Cure Time	24.0 hour
Pot Life	40.0 min	ASTM D-2471

Descriptive Properties
Color	Blue
Mix Ratio	100A:10B	by weight
Specific Volume	22.7	[cu. in./lb.]

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PREYN105 / 296806

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