Knowde Enhanced TDS
Identification & Functionality
- Chemical Family
- Polymer Name
- Plastics & Elastomers Functions
- CAS No.
- 126-30-7
- Technologies
- Product Families
Features & Benefits
Applications & Uses
- Applications
- Plastics & Elastomers End Uses
- Plastics & Elastomers Processing Methods
- Applications
- R0075 can be used to produce small to medium sized crystal clear castings from molds made of FRP, glass, metal or silicone rubber. For best results we do not recommend casting R0075 in thicknesses greater than 1 1/2 inches or masses greater than 10 ounces. It may well be possible to make castings larger than this by reducing the catalyst and cooling the molds but our experience has been that castings larger than outlined above tend to crack and discolor due to the highly reactive resin used in the systems.
- R0075 Crystal Clear Casting Resin is supplied at a viscosity low enough to facilitate the release of most, if not all, of the air bubbles. Care should be taken, however, to minimize mixing excessive air into the resin when adjusting temperature or dispersing the peroxide hardness.
- R0075 can be used for embedding specimens such as coins, shells or other artifacts. One technique that we have found practical is to determine the total amount of resin necessary to fill the chosen mold. Add the catalyst or hardener to this resin and pour approximately one-half the resin into your mold. Immediately refrigerate the remaining catalyzed resin. As soon as the resin in the mold gels to a firm stage place the artifact to be embedded face down on the resin surface taking care to work all the air bubbles out. Remove the remaining catalyzed resin from the refrigerator and pour into the mold covering the artifact. When the casting is completely gelled the artifact should be sealed in the clear casting resin with no visible sign of a seam line between the two pours.
Properties
- Typical Properties
- Neat Resin Properties
| Value | Units | Test Method / Conditions | |
| Viscosity, Brookfield, 77°F | 250 - 350 | cps | — |
| Weight per gallon | 9 | lbs. | — |
| Specific Gravity | 1.08 | — | — |
| Value | Units | Test Method / Conditions | |
| Gel Time, 77°F, 1.0% RCI 46-702 MEKP | 10 - 15 | minutes | — |
| Gel to Peak | 25 - 35 | minutes | — |
| Peak Exotherm, 100 gram mass | 310 - 340 | °F | — |
Technical Details & Test Data
- Properties
% MEKP MATRIX GEL TIME (77°F) TYPICAL DEMOLD TIME 1.00 12 minutes 50 - 60 minutes 0.75 18 minutes 80 - 90 minutes 0.50 28 minutes 110 - 130 minutes
Safety & Health
- Safety Considerations
- HK Series Isophthalic Casting Systems are based on a resin, which contains styrene monomer, which is a flammable liquid. Keep away from sparks, heat and open flame (including pilot lights). Electrical equipment should be vapor-proof and protected from breakage.
- Styrene vapors are heavier than air and will tend to concentrate in the low areas of molds and in pockets immediately above the floor area. To keep vapors within a safe limit in all areas, adequate ventilation or suction fans should be used that will remove these styrene monomer vapors.
All equipment must be grounded - including spray guns and molds.
Both the polyester resin and the catalyst may cause burns to eyes and skin. Do not get in the eyes! Avoid breathing vapors! Gel coat applicators should wear a NIOSH approved respirator effective for vapors, spray mist and dust. In case of accidental contact, remove the contaminated clothing and wash affected skin areas with soap and copious quantities of water. Contact a physician if persistent skin irritation occurs. For eyes, immediately flush with plenty of water for at least 15 minutes; call a physician immediately. Wash contaminated clothing before reusing.
Storage & Handling
- Shelf Life
Shelf Life, Uncatalyzed, 77°F - min. 3 months