Epoxies

INSULCAST 140 MT
CASTABLE EPOXY HEAT SINK

DESCRIPTION

INSULCAST 140 MT is an epoxy casting system with high thermal conductivity. This system, when cured with INSULCURE 11B, also provides Class F operating properties.

PROPERTIES-UNCURED:
 Insulcast
140 MT
Insulcure
11B
 
PROPERTIES UNCURED:
Color, visualBlackAmber 
Viscosity @25°C, cps250,000700ASTM D 2393
Specific Gravity2.600.95 
Mix Ratio (by weight) 100:3-4 
Mixed viscosity @25°C, cps 50,000ASTM D 2393
Pot Life (100 grams)@25°C, hrs  2.5 
Shelf Life @72°F, months 12 
PROPERTIES-CURED:
PHYSICAL:
Hardness, Durometer (Shore D) 90-95ASTM D 2393
Tensile Strength, psi 8,500ASTM D 638
Tensile Elongation, % <1.0ASTM D 638
Compressive Strength, psi 18,000ASTM D 638
Flexural Strength, psi 13,500ASTM D 638
Coefficient of Thermal Expansion, °C 26 x 10-6 
Thermal Conductivity, BTU-in/(ft2)(hr)(°F) 20 
Heat Distortion Point, °C 155 
Service Temperature, °C 155 
ELECTRICAL:
Dielectric Strength, volts/mil 420ASTM D 149
Dielectric Constant, 1 KHz 6.3ASTM D 150
Dissipation Factor 0.015ASTM D 150
Volume Resistivity, ohm-cm <1.0 x 1015ASTM D 257

MIXING INSTRUCTIONS:

  1. Pre-heat INSULCAST 140MT to 50°C to enhance flow and air release.
  2. Stir contents thoroughly until all filler is dispersed.
  3. Measure out required amount of INSULCAST 140MT. Weigh into it 3-4 parts of INSULCURE 11B per 100 parts of INSULCAST 140 MT.
  4. Mix thoroughly being sure to scrape sides and bottom of mixing container.
  5. Where void-free castings are required, de-air for 2-5 minutes at 29 in. Hg.
  6. Pour into mold or cavity.

CURE SCHEDULE:
INSULCURE 11B: Fast Cure - 120°C for 2 hours.
Small Mass: 95°C for 2-3 hours plus 1 hour @120°C.
Large Mass (greater than 5 lbs.): 65°C for 4 hours plus 2 hours @120°C.
Post Cure: 150°C for 4 hours (for service temperature above 150°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.

HEALTH CAUTION:
Avoid breathing possible fumes, mists and vapors which can cause severe respiratory damage. Use of NIOSH approved breathing apparatus is required for more than minimal exposure. Always work in areas with adequate ventilation to allow dissipation of polyamine and other chemical fumes, and where applicable, solvent fumes. Use of goggles, protective garments, rubber gloves, protective cream is required. If material gets into eyes, flush thoroughly with clear water for twenty (20) minutes; then seek medical treatment. Avoid skin contact. Material can cause contact dermatitis. Always wash exposed areas immediately, using warm water and soap, followed by rinsing with clean water. Observe all safety precautions. It is important when using solvent based materials or solvents to keep away from open flame or ignition source.

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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