| Silicones - Condensation Cure
RTVS 49
THERMALLY CONDUCTIVE RTV SILICONE COMPOUND
DESCRIPTION
RTVS 49 is a red, pourable RTV Silicone potting/casting compound with high thermal conductivity. RTVS 49 cures to firm but flexible rubber, capable of withstanding temperatures of 500°F continuous and 600°F short term exposure. RTVS 49 finds use in electronic devices requiring heat dissipation.
| PROPERTIES-UNCURED: |
| Color, visual |
Red |
|
| Viscosity, cps |
50,000 |
ASTM D 1084 |
| Specific Gravity |
2.30 |
|
| Mix Ratio (by weight) |
0.1 to 0.5 |
|
| Mixed Viscosity, cps |
45,000 w/CAT-2 (DBT) |
|
| Pot Life @25°C, min. |
15-120 (varies with catalyst) |
|
| Shelf Life @25°C, months |
6 |
|
| PROPERTIES-CURED: |
| PHYSICAL: |
| Hardness, Durometer (Shore A) |
75 |
ASTM D 2240 |
| Tensile Strength, psi |
600 |
ASTM D 412 |
| Tensile Elongation, % |
100 |
ASTM D 412 |
| Tear Strength, Die B lb/in |
25 |
ASTM D 624 |
| Coefficient of Thermal Expansion, °C |
70 x 10-6
|
|
| Thermal Conductivity, BTU-in/(ft2)(hr)(°F) |
10
|
|
| Thermal Conductivity, BTU-ft/(ft2)(hr)(°F) |
0.83
|
|
| Service Temperature Range, °C |
-55 to 260
|
|
| ELECTRICAL: |
| Dielectric Strength, volts/mil |
550 |
ASTM D 149 |
| Dielectric Constant, 1 KHz |
5.0 |
ASTM D 150 |
| Dissipation Factor, 1 KHz |
0.01 |
ASTM D 150 |
| Volume Resistivity, ohm-cm |
10 x 1014 |
ASTM D 257 |
MIXING INSTRUCTIONS:
1. Pre-mix RTVS 49 in its original container to reincorporate any filler that may have settled prior to use.
2. Weigh out the required amount of RTVS 49.
3. Measure the required amount of CAT-2 (DBT). See RTVS Catalyst Selector Guide.
4. Mix thoroughly, scraping the sides and bottom of container.
5. Evacuate at 29 in. Hg.
6. Pour into unit or cavity.
CURE SCHEDULES:
(Using 0.3% CAT-2 (DBT)
Overnight at room temperature (24 hours at 25°C).
NOTE: Full properties will develop in 4-7 days or after a post cure of three hours at 65°C.
IMPORTANT:
The following supersedes any provision in your company's forms, letters and papers. AMERICAN SAFETY TECHNOLOGIES, INC. makes NO WARRANTY, WHETHER EXPRESSED OR IMPLIED, INCLUDING WARRANTIES of MERCHANTABILITY OR of FITNESS FOR A PARTICULAR PURPOSE FOR THIS PRODUCT. No statements or recommendations contained in the product literature are to be construed as inducements to infringe any relevant patent, now or thereafter in existence. UNDER NO CIRCUMSTANCES SHALL AMERICAN SAFETY TECHNOLOGIES, INC. BE LIABLE FOR INCIDENTAL, CONSEQUENTIAL OR OTHER DAMAGES FROM ALLEGED NEGLIGENCE, BREACH of WARRANTY, STRICT LIABILITY OR ANY OTHER THEORY, ARISING OUT of THE USE OR HANDLING of THIS PRODUCT. The sole liability of AMERICAN SAFETY TECHNOLOGIES, INC. for any claims arising out of the manufacture, use or sale of its products shall be to refund the buyer's purchase price, provided such products have been demonstrated in AMERICAN SAFETY TECHNOLOGIES, INC. sole opinion, to justify such refund.
HANDLING PRECAUTIONS:
RTV silicone rubber base compounds and the curing agents for addition cure products are non-hazardous and practically non-toxic. Curing agents for condensation cure products contain tin soaps which can irritate eyes and skin of some individuals. Avoid contact with skin; if contact occurs, wash affected areas at once with soap and water. Avoid contact with eyes. In case of contact with eyes, flush with water for 15 minutes; call a physician.
PLEASE REFER TO MATERIAL SAFETY DATA SHEET FOR FURTHER FIRST AID INFORMATION.
FOR CHEMICAL EMERGENCY
CALL CHEMTREC (DAY OR NIGHT) 800 424-9300.
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