| Silicones - Addition Cure
RTVS 3-165
A DEEP SECTION, LOW COEFFICIENT OF EXPANSION, RTV SILICONE POTTING COMPOUND
DESCRIPTION
RTVS 3-165 offers a new dimension in liquid RTV silicone potting materials for high reliability power supplies. RTVS 3-165 was designed to offer an acceptable balance of low viscosity, high thermal conductivity and low thermal coefficient of expansion to accommodate these often conflicting needs of airborne, high voltage, power supplies. The following properties are combined in one product.
Addition cure - for deep sections
Flexibility to - 115°C
Low thermal coefficient of expansion
Reversion resistant
Cure can be heat accelerated
Good thermal conductivity
Low viscosity
Excellent electrical properties
Can be held under vacuum for long periods without inhibiting cure
| PROPERTIES-UNCURED: |
| |
Part A |
Part B |
|
| Color, visual |
Gray |
Clear |
|
| Viscosity, cps |
21,000 |
400 |
ASTM D 1084 |
| Specific Gravity |
1.53 |
.96 |
|
| Specific Gravity, mixed |
1.42 |
|
| Mix Ratio (by weight) |
100:10 |
|
| Mixed Viscosity, cps |
16,000 |
|
| Pot Life @25°C, hours |
>2 |
|
| Shelf Life @25°C, months |
6 |
|
| PROPERTIES-CURED: |
| PHYSICAL: |
| Hardness, Durometer (Shore A) |
59 ±3 |
ASTM D 2240 |
| Tensile Strength, psi |
350 min. |
ASTM D 412 |
| Tear Strength, Die B lb/in |
25 |
ASTM D 624 |
| Tear Strength, Die C lb/in |
15 |
ASTM D 624 |
| Tensile Elongation, % |
65 |
ASTM D 412 |
| Coefficient of Thermal Expansion |
17 x 10-5 |
|
| Thermal Conductivity, BTU-ft/(ft2)(hr)(°F) |
0.18 |
|
| Thermal Conductivity, BTU-in/(ft2)(hr)(°F) |
2.16 |
|
| Service Temperature, °C |
-115 to 260 |
|
| ELECTRICAL: |
| Dielectric Strength, volts/mil |
500 |
ASTM D 149 |
| Dielectric Constant, 1 KHz |
3.9 |
ASTM D 150 |
| Dissipation Factor, 1 KHz |
0.01 |
ASTM D 150 |
| Volume Resistivity, ohm-cm |
2 x 1014 |
ASTM D 257 |
MIXING INSTRUCTIONS:
1. Pre-mix Part A in original container before withdrawing any material.
2. Measure 100 parts of Part A for each 10 parts of Part B.
3. Mix thoroughly, scraping both the bottom and the sides of mixing container.
4. To ensure void-free castings, evacuate at 29" Hg for 3-4 minutes.
5. Pour into unit or mold.
CURE SCHEDULES:
Overnight at room temperature (24 hours) @25°C, OR 4 hours at 50°C, OR 1 hour at 90°C, OR 15 minutes at 125°C.
SPECIAL NOTES:
Certain materials may inhibit the cure of RTVS 3-165 when placed in contact with the mixed, uncured rubber. Materials such as amines and amine cured epoxies, sulfur containing materials and condensation (tin cured) silicones, are some which may cause inhibition. Even surfaces which have been in contact with such materials may cause it. If in doubt, a patch test should be done.
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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