Atlac 590UHT is a novolac epoxy vinyl ester resin engineered for corrosive environments at ultra high temperature. Components based on Atlac 590UHT feature superior retention of mechanical properties at elevated temperature, along with superior resistance to oxidizing chemicals and solvents, making it a practical specification choice for buyers sourcing resin for demanding chemical processing equipment.
Benefits
- Relatively low styrene emission
- High crosslinking density
- Resisting elevated temperatures above 200°C
- High resistance to thermal aging
- Outstanding resistance to strong acids, oxidizing media and organic solvents over a wide temperature range
Application
This grade is the preferred choice for applications with high operating and design temperatures. It is designed for ease of fabrication using hand lay-up, spray-up, filament winding, compression molding and resin transfer molding techniques. It has been applied in chemical storage tanks, pipes, flue gas desulfurization (FGD) systems, stacks, scrubbers, and ducts, and has excellent resistance to organic solvents due to its high crosslinking density.
Atlac 590UHT Product Specification
| Property | Value | Unit | Test Method |
|---|---|---|---|
| Appearance | Clear | — | TM 2265 |
| Solids content, IR drying | 67.0-71.0 | % | TM 2033 |
| Viscosity @23°C | 450-550 | mPa.s | TM 2013 |
| Gel Time (25 until 35°C) | 28-38 | minutes | TM 2625 |
Reactivity for the Atlac 590UHT specification table above was measured with 1.0 g Butanox M50 and 1.0 g Accelerator NL 49P added to 100 g of resin.
Liquid Resin and Unfilled Castings Typical Properties
| Property | Value | Unit | Test Method |
|---|---|---|---|
| Flash point | 33 | °C | TM 2800 |
| Stability, no initiator, dark, 25°C | 6 | months | — |
| Tensile strength | 72 | MPa | ISO 527-2 |
| Tensile modulus | 3.7 | GPa | ISO 527-2 |
| Tensile elongation | 2.3 | % | ISO 527-2 |
| Flexural strength | 115 | MPa | ISO 178 |
| Flexural modulus | 3.5 | GPa | ISO 178 |
| HDT | 200 | °C | ISO 75 Ae |
| Tg | 210 | °C | ASTM D570 |
| Unnotched impact strength | 10 | kJ/m² | ISO 179 |
Curing Conditions
- Cured with 1.0 g Butanox M50 and 1.0 g Accelerator NL 49P added to 100 g of resin. After 24h at RT followed by post curing for 3h at 130°C.
- After 24h at RT followed by post curing for 3h at 130°C and 24h at 200°C.
Processing and Storage Guidelines
For processing Atlac 590UHT, full strength catalyst levels should be kept between 1.0% and 2.0% of the total resin weight, with shop temperatures maintained between 18°C and 32°C and humidity between 40% and 90% for consistent gel times. Cumyl hydroperoxide is commonly referenced as a compatible catalyst because this resin is reactive; parts cured at room temperature may remain relatively tack free, and a 10% solution of paraffin wax (MP 46-48°C) in styrene can be added to the last resin layer when further laminating is planned. For thick composites, high dimer MEKP catalysts can be used, and optimum cure and performance may be obtained by post curing room temperature cured laminates for two hours at 70-100°C. The resin should be stored in a dark and dry place at temperatures between 5°C and 30°C; shelf life is reduced at higher temperatures, and since the shelf life of styrene-containing vinyl ester is significantly reduced when exposed to light, it should be stored in the dark and in 100% light-tight containers only.
Applications in FRP and Composite Manufacturing
Due to the excellent curing characteristics of this Atlac 590UHT resin, buyers are advised to complete all secondary bonding as soon as possible, and to avoid low fiberglass content and resin puddling. Composite manufacturers evaluating high-temperature vinyl ester systems can reference process and testing guidance from standards bodies such as the ASTM D20 Committee on Plastics. Because resin performance depends on the catalyst system and cure schedule used, it is commonly specified together with other resin products such as standard vinyl ester and unsaturated polyester systems used in the same facility.
Sourcing and Supply
Chemicalsstore.com provides supply chain resource support for this recommended international brand product to overseas composite material buyers, FRP factories, chemical storage tank fabricators, and sourcing managers. Buyers evaluating Atlac 590UHT for a new specification are encouraged to request the full technical data sheet and Material Safety Data Sheet before finalizing an order.
Frequently Asked Questions
What is Atlac 590UHT used for?
It is a novolac epoxy vinyl ester resin for corrosive environments at ultra high temperature, applied in chemical storage tanks, pipes, flue gas desulfurization systems, stacks, scrubbers, and ducts fabricated by hand lay-up, spray-up, filament winding, compression molding, and resin transfer molding.
What temperature resistance does this resin offer?
Components based on it feature superior retention of mechanical properties at high temperature, with resistance to elevated temperatures above 200°C and a Heat Deflection Temperature of 200°C and glass transition temperature of 210°C.
What are the key liquid resin properties?
The liquid resin has a viscosity of 450-550 mPa.s at 23°C, a gel time of 28-38 minutes, solids content of 67.0-71.0%, and a flash point of 33°C, with a stability of 6 months when stored without initiator in the dark at 25°C.
What catalyst is recommended for processing?
Cumyl hydroperoxide is commonly referenced as a compatible catalyst for this reactive resin, with full strength catalyst levels kept between 1.0% and 2.0% of total resin weight; high dimer MEKP catalysts can be used for thick composites.
How should Atlac 590UHT be stored?
Store it in a dark and dry place at 5°C to 30°C; shelf life is reduced at higher temperatures, and because its shelf life is significantly reduced by light exposure, it should be stored in the dark in 100% light-tight containers only.
For the technical data sheet, Material Safety Data Sheet, or a quotation on Atlac 590UHT for your next high-temperature FRP production run, contact our team through the inquiry form on this page.
