Enhanced TDS
Knowde-enriched technical product data sheet
Identification & Functionality
- Chemical Family
- Polymer Name
- Composite Materials Functions
- Technologies
- Product Families
Features & Benefits
Applications & Uses
- Markets
- Applications
- Plastics & Elastomers End Uses
- Composites Processing Methods
Properties
- Typical Properties
Value Units Test Method / Conditions Weight per gallon at 77°F 9.2 lbs. - Specific Gravity at 77°F 1.1 - - Viscosity, Brookfield at 77°F 6 RPM 1500 - 1900 cps - Viscosity, Brookfield at 77°F 60 RPM 500 - 700 cps - Thixotropic Index: 2.5 - 3.0 - - Monomer Styrene - - - Cured Casting Properties
Value Units Test Method / Conditions Specific Gravity 1.21 - - Water Absorption (Immersed 24 hrs at 77°F) 0.22 % - Barcol Hardness 40 - 50 - 934-1 Flexural Strength 13100 psi ASTM-D-790 Flexural Modulus 5.0 X 10 psi ASTM-D-790 Tensile Strength 7200 psi ASTM-D-638 Compressive Strength 15000 psi ASTM-D-695 Heat Distortion Temperature 65 (149) °C (°F) ASTM-D-648
Technical Details & Test Data
- Catalyzing Instructions
The following table illustrates the approximate cup gel times, which will be obtained at various catalyst concentrations and temperatures.
% MEKP AMBIENT TEMPERATURES °F GEL TIME, MINUTES 1.25 77 20 - 25 0.6 77 40 - 50 1.25 65 35 - 45 0.6 65 55 - 65
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 at 77°F - 3 months
- Shelf Life catalyzed 1.25% MEKP at 77°F - 20 - 25 minutes