Knowde Enhanced TDS
Identification & Functionality
- Chemical Name
- Fluids & Lubricants Functions
- Industrial Additives Functions
Features & Benefits
- Benefits/Advantages
- Eliminate labor costs involved with external release agents.
- Cleanliness of molds.
- Reduced release agent cost on utility basis when compared with other more conventional internal mold release agents.
- Protects ferrous metal molds from corrosion during storage.
- Reduced danger of loss or damage to expensive molds or parts due to improper application of external parting agents.
- Improves surface appearance of molded parts.
- Elimination of some adhesion problems during applications of finishes, printing inks, or adhesives to the molded part.
- Produces exceptionally smooth surfaces on molded products made from low shrink, unsaturated, thermosetting polyester resins.
- No adverse affects on the rate and cure of polyester resins.
Applications & Uses
- Markets
- Applications
- Fluids & Lubricants Type
- Industrial Additives End Use
- Applications
ZELEC UN is an effective release agent in polyester resin molding operations that require external heat, such as matched metal die, compression and pultrusion. In applications and filler systems where the acidity of ZELEC UN may be an issue, the use of the low acid version, ZELEC MR-2, is recommended.
End Product Uses
- Internal release agents for molding of unsaturated polyester resins.
- Release agent for externally heat cured molding operations.
- Internal mold release agent for pultrusion molding of fiberglass reinforced polyester resins
- Usage Rates
For internal release in polyester resins, 0.5 parts ZELEC UN per 100 parts resin are recommended for initial trials. Lower or higher rates may be required depending on the resin characteristics. Typical ranges fall between 0.25 and 0.75 parts per 100. Conditioning of the mold may be required with certain resins where either higher usage rates or external application of a 5% solution of ZELEC UN may be required for several runs prior to starting the molding run.
Properties
- Physical Form
- Appearance
- Clear pale yellow liquid
- Soluble in
- Styrene, Active Solution
- Dispersible in
- Isopropanol, Mineral Oil
- Insoluble in
- Toluene
- Typical Properties
| Value | Units | Test Method / Conditions | |
| Decomposition Temperature | min. 175 | °C | — |
| Density (at 25 °C) | 0.98 | g/ml | — |
| Actives Content | 100 | % | — |
| Flash Point | min. 94 | °C | — |
| Viscosity (at 27°C, 80 °F) | 165 | cPs | — |
Regulatory & Compliance
- Chemical Inventories
- Clearances
The international inventories (country clearances) of ZELE UN can be found in Section 15 of the Safety Data Sheet (SDS). It is the responsibility of the formulator to review the chemical control regulations for each country where the end product is intended to be sold or used.
Technical Details & Test Data
- Effect of ZELEC UN on Hardness of Oven Cured Polyester
% ZELEC 0 0.1 0.25 0.5 2 ZELEC UN 86 86 88 88 85 - Hardness - Barcol 935 Hardness
- Polyester - Plaskon 941 + 1.0% Benzoyl Peroxide
- SPI Gel Time
Exotherm Curves for Polyester Resins Containing ZELEC UN
% Conc. Gel Time Cure Time Peak Exotherm ZELEC UN
0.25 6 min, 0 sec 7 min, 30 sec 202°C (395°F) 0.5 6 min, 0 sec 7 min, 45 sec 208°C (407°F) Control 0 5 min, 30 sec 7 min, 30 sec 221°C (430°F) Polyester - Plaskon 941 + 1.0% Benzoyl Peroxide.
Safety & Health
- Health Effects
ZELEC UN is slightly non-toxic orally (LD50, rat >5500 mg/kg) and may be corrosive to skin and eyes.
Packaging & Availability
- Standard Packaging
ZELEC UN is available in bulk and 55 gallon drums.
Storage & Handling
- Storage & Handling
Normal safety precautions (i.e., gloves and safety goggles) should be employed when handling ZELEC UN. ZELEC UN is corrosive, contact with eyes and skin should be avoided. ZELEC UN should be stored in a cool, dry place in closed containers.
- Workplace Exposure
Occupational exposure can occur primarily through skin contact or via inhalation of vapors and mists. Engineering controls, personal protective equipment, and other workplace practices should be used to control these exposures.