CC3-300
TABULAR ALUMINA FILLED CASTING RESIN
CC3-300 is a high viscosity, alumina filled casting resin offering high thermal conductivity, high heat distortion, excellent electrical insulation, low coefficient of thermal expansion, and extremely low shrinkage during cure.
It will withstand the most rugged tests of temperature, chemical attack, and voltage shock, and ls easier to fabricate than metals or ceramics at lower cost.
Supplied as a pourable resin, it cures to a rigid, opaque plastic at room temperature or with heat. The thermal expansion coefficient is closely matched to aluminum. CC3-300 has excellent adhesion to a wide variety of materials, i.e., metal, plastic, glass, and ceramic. To reduce viscosity, warm the resin between 100-150'F prior to adding the hardener.
SUGGESTED APPLICATIONS
Large Castings: __CC3-300 is ideal for pouring large castings such as capacitor bushings, transformers, or any unit where heat dissipation is important. Low shrinkage and low exotherm are two of the reasons why a two hundred pound casting can be made in a single pour.
Small Castings: Even the intricate circuitry of a power supply can be encapsulated, void free, with CC3-300, if both the amplifier and the resin are preheated to 150'F prior to filling. We recommend evacuating the catalyzed resin before and after filling the unit.
ELECTRICAL AND PHYSICAL PROPERTIES
| Specific Gravity @ 25'C | 2.3 - 2.4 | |
| Viscosity @ 45'C, cps | 35,000 | |
| Thermal Conductivity, BTU/ft2-hr-'F/in | 12.2 | |
| Tensile Strength @ 25'C psi | 10,500 | |
| Compressive Strength @ 25'C psi | 29,050 | |
| Izod Impact, ft lbs/in of notch | 0.25 | |
| Coefficient of Thermal Expansion, in/in/'C x 10-6 | 22 | |
| Heat Distortion, 'C | 155 | |
| Water Absorption, 7 days @ 25'C, % | 0.18 | |
| Volume Resistivity @ 25'C, ohm-cm | 10 16 | |
| Dielectric Constant @ 25'C, 100 KC | 6.0 | |
| Dissipation Factor @ 25'C, 100 KC | 0.02 | |
| Dielectric Strength, volts/mil | 600 | |
| Binear Shrinkage, in/in | 0.0015 | |
| Service Temperature, 'C continuous | -65 to 185 |
(Typical properties when cured with H-7)
CHOICE OF HARDENERS
| H-1 HARDENER | - rigid, good dimensional stability, fast cure. |
| H-7 HARDENER | - resilient, excellent mechanical and thermal shock, low viscosity, good air release, fast cure. |
| H-34 HARDENER | - resilient, excellent mechanical and thermal shock, plus high heat distortion, long pot life. |
| H-lOLV HARDENER | - variable hardness, excellent impact properties, long pot life. |
|
HARDENER
|
PARTS BY WEIGHT
PER 100 PARTS OF RESIN |
POT LIFE
100 GRAM 25' C (77 ' F) |
CURE TIME
25 ' C (77 ' F) |
CURE TIME
65 ' C (149 ' F) |
CURE TIME
125 ' C (257 ' F) |
| H-1 |
3.9
|
2 hrs
|
24 hrs.
|
2 hrs.
|
---
|
| H-7 |
8.1
|
3 hrs.
|
24 hrs.
|
2 hrs.
|
---
|
| H-34 |
5.7
|
8 hrs.
|
---
|
16 hrs.
|
4 hrs.
|
| H-10LV | rigid ____________9 |
3 hrs.
|
24 hrs.
|
3 hrs.
|
---
|
| H-10LV | semi-flex ________24 |
3 hrs.
|
24 hrs.
|
3 hrs.
|
---
|
| H-10LV | flexible __________38 |
3 hrs.
|
24 hrs.
|
3 hrs.
|
---
|
ROOM TEMPERATURE CURE
| H-1 HARDENER | - | Cures overnight at room temperature or 2 hours at 65'C. Do not heat cure if the mass exceeds 200 grams. |
| H-7 HARDENER | - | Cures overnight at room temperature or 2 hours at 65'C. Do not heat cure if the mass exceeds 200 grams. |
| H-10LV HARDENER | - | Cures overnight at room temperature or 3 hours at 65'C. |
HEAT CURE
| H-34 HARDENER |
- |
Cures over night at 65'C or 4 hours at 125'C. For the best physical and electrlcal properties, a slow cure for 16 hours at 65'C followed by a post cure for 4 hours at 125'C is recommended. |
MIXING INSTRUCTIONS
Mix CC3-300 thoroughly in its shipping container to insure a uniform consistency. Weigh out the required amount of resin ln a clean container. Add the hardener accurately by weight in the proper proportion as specified above. Mix thoroughly. To reduce surface tension and the required amount of head room needed to evacuate the compound prior to pouring, add 1/2 gram of CC3-1000 Mold Release per 100 grams of resin.
Use in a well ventilated area and avoid contact with eyes and skin.
(508) 587-4502 CAST-COAT, INC. FAX (508) 587-4514
354 WEST STREET W. BRIDGEWATER, MA 02379