Urethane-modified vinyl ester resins for vacuum introduction process
Atlac® 580 AC 250C resin offers excellent water and heat resistance, as well as good process and cure properties.
Characteristic performance
- low exothermic
- Excellent wettability
- Excellent water and heat resistance
Product Properties
Atlac® 580 AC 250C is a pre-promoted, urethane bisphenol A vinyl ester resin with low viscosity and medium reactivity.
typical application
Atlac® 580 AC 250C is suitable for resin injection, vacuum introduction/RTM processes. The resin is particularly recommended for the production of fiber-reinforced boats.
Atlac® 580 AC 250C has a low viscosity with excellent wetting of glass fibers.Atlac® 580 AC 250C has a low exotherm with good curing properties.
The final product based on Atlac® 580 AC 250C has excellent water resistance and good thermal stability.
Product Indicators
| performances | numerical value | unit (of measure) | Test Methods |
|---|---|---|---|
| exterior condition | pistachioid | - | TM 2265 |
| acid value | 4.5-6.5 | mgKOH/g | TM 2401 |
| Solid content | 46-50 | % | TM 2033 |
| Viscosity@23℃ | 150-200 | mPa.s | TM 2013 |
| Gel time | 60-90 | minutes | TM 2625 |
Reactivity test: 2.0 g of hardener Butanox® M50 (Nouryon) was added to 100 g of resin.
Typical Properties of Liquid Resins
| performances | numerical value | unit (of measure) | Test Methods |
|---|---|---|---|
| flash point | 33 | ℃ | TM 2800 |
| Storage period, no polymerization inhibitor, protected from light, 25°C | 3 | moon | - |
Pure resin casting body properties (typical values)
| performances | numerical value | unit (of measure) | Test Methods |
|---|---|---|---|
| Density, 20°C | 1080 | Kg/m³ | - |
| tensile strength | 78 | MPa | ISO 527-2 |
| tensile modulus | 3.0 | GPa | ISO 527-2 |
| Tensile elongation at break | 3.5 | % | ISO 527-2 |
| bending strength | 150 | MPa | ISO 178 |
| bending modulus | 3.5 | GPa | ISO 178 |
| Heat Deflection Temperature (HDT) | 107 | ℃ | ISO 75 Ae |
| Unnotched impact strength | 15 | kJ/m² | ISO 179 |
| barcolithic hardness | 40 | Barcol | ASTM D2583 |
Add 0.5g of accelerator NL 63-10P and 1.5g of curing agent Butanox® to 100g of resin.
M50 (Nouryon), cured at room temperature for 24 hours and then post cured at 100°C for 3 hours.
Process Operation Guide
- The resin needs to be stored at a suitable temperature and humidity for a constant period of time before use, and the operating temperature should normally be above 15°C when using the MEKP/Co curing system;
- Atlac® 580 AC 250C resin contains accelerators and should be used with the curing agent MEKP, which should be kept within the validity period.
- The temperature of the workshop should be maintained between 18℃ and 32℃, and the humidity of the workshop should be maintained between 40% and 90%. Constant shop conditions will result in constant gel time and help the manufacturer produce high quality products.
- At lower temperatures, dimethylaniline (DMA) can be used to adjust the gel time.
- The final cured state of the product prior to use can be post-cured for a few hours at high temperatures (e.g. 80°C) to achieve optimum physical and chemical properties.
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