Elkem (Bluestar Silicones) BLUESIL™ RTV 1556 B Fast Cure Silicone Rubber

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Elkem (Bluestar Silicones) BLUESIL™ RTV 1556 B Fast Cure Silicone Rubber
Categories:	Polymer; Thermoset; Silicone; Silicone Rubber
Material Notes:	Description: BLUESIL™ RTV 1556 is a two component, high strength, addition cure, room temperature or heat vulcanized silicone rubber compound. Designed specifically for moldmaking applications, it offers low viscosity, high tear cut resistance, and easy release for long lasting molds. BLUESIL™ RTV 1556 has high temperature and chemical resistance with excellent flexibility, low shrinkage, and excellent detail reproduction which makes it well suited for production and prototyping use with all types of casting resins. Applications: Conventional production and prototype molds Giftware, furniture, and artistic molding Finished rubber parts Electronic encapsulation Stereolithography (SLA) molds Epoxy laminate molding Picture frames, mirrors, and furniture molding Information provided by Bluestar Silicones
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Physical Properties	Original Value	Comments

Specific Gravity	1.10 g/cc
Viscosity	10000 cP	Part B, Catalyst Component
	12000 cP	Mixed
	15000 cP	Part A, Base Component
Linear Mold Shrinkage	<= 0.0010 cm/cm @Time 86400 sec
	0.0010 cm/cm @Time 605000 sec
Storage Temperature	24.0 °C

Mechanical Properties	Original Value	Comments
Hardness, Shore A	30	ASTM D2240
Tensile Strength	1035 psi	ASTM D412
Elongation at Break	660 %	ASTM D412
Tear Strength	130 pli	ASTM D624, Die B

Electrical Properties	Original Value	Comments
Volume Resistivity	7.00e+14 ohm-cm
Dielectric Constant	3.0 @Frequency 1000 Hz
Dielectric Strength	460 V/mil
Dissipation Factor	0.0040 @Frequency 1000 Hz

Thermal Properties	Original Value	Comments
CTE, linear	290 µm/m-°C
Thermal Conductivity	0.250 W/m-K
Maximum Service Temperature, Air	249 °C
Minimum Service Temperature, Air	-55.0 °C

Processing Properties	Original Value	Comments
Cure Time	168 hour	50% RH
Pot Life	15.0 min
Shelf Life	18.0 Month

Descriptive Properties
Color	Translucent	Part A, Base Component
	Translucent	Part B, Catalyst Component
Mix Ratio	10:1	A:B
Work Life	30-60 mins

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PBLUST040 / 191016

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