Products based on the carbamate-modified vinyl ester resin
Atlac® 580 ACT offer high mechanical strength and excellent corrosion and heat resistance. Atlac® 580 ACT resin offers good processability and is suitable for the production of carbon fiber, aramid fiber, and glass fiber-reinforced composites.
Characteristic Properties
- Low exothermic reaction, suitable for single-layer thick products
- Excellent wetting properties, suitable for glass fiber, carbon fiber, and aramid fiber
- Low shrinkage
- Excellent heat resistance and toughness
- Bubble-free curing system, even when using standard MEKP
Product Properties
Atlac® 580 ACT is a pre-accelerated, thixotropic, high-performance ethyl carbamate bisphenol A vinyl ester resin with medium viscosity and medium reactivity. Atlac® 580 ACT offers a perfect combination of excellent corrosion resistance, heat resistance, and flexibility.
Atlac® 580 ACT also features excellent processing and curing properties.
Typical Applications
Atlac® 580 ACT is a resin specifically developed to meet the requirements of hand-layup and spray-up processes; it is recommended for the manufacture of chemical-resistant equipment and marine vessels.
Atlac® 580 ACT exhibits excellent wetting properties with glass fiber, facilitating air evacuation; compared to traditional vinyl ester resins, it produces fewer bubbles when used with standard MEKP, thereby minimizing bubbles within and on the surface of laminates.Because Atlac® 580 ACT contains a carbamate additive, thixotropy is easily achieved using standard fumed silica, and compatibility with carbon fiber, glass fiber, and aramid fiber reinforcements is enhanced. Atlac® 580 ACT exhibits low exothermic heat release during curing, allowing for the one-step molding of thick parts; at the same time, its excellent curing properties ensure optimal curing of thin layers.
Final products made with Atlac® 580 ACT exhibit excellent water resistance and good thermal stability.
Atlac® 580 ACT is resistant to corrosion from most acidic salts, alkaline media, and hot water, while also offering excellent heat resistance and toughness.
Certifications and Certificates
The properties of cured Atlac® 580 ACT resin castings comply with Type 1310 of the German standard DIN 16946/2.
Atlac® 580 ACT complies with Group 7B of the European standard EN 13121/1.
This resin has been certified by Lloyd’s Register and the Italian Naval Register for use in shipbuilding.
Product Specifications
| Performance | Value | Unit | Test Method |
|---|---|---|---|
| Appearance | Turbidity | - | TM 2265 |
| Acid Number | 4.0–8.0 | mg KOH/g | TM 2401 |
| Solid Content, IR-dried | 49.5–52.5 | % | TM 2033 |
| Viscosity, 2 s⁻¹ | 1000–1600 | mPa·s | TM 2313 |
| Viscosity, 20 s⁻¹ | 500–600 | mPa·s | TM 2313 |
| Viscosity, 250 s⁻¹ | 370–430 | mPa·s | TM 2313 |
| Gel time, 25–35°C | 25.5–31.5 | minutes | TM 2313 |
| Curing time at 25°C—exothermic peak | 42.5–52.5 | minutes | TM 2625 |
| Exothermic peak | 125–155 | ℃ | TM 2625 |
Viscosity test: Z2/23°C
Reactivity test: Add 1.5 g of Butanox® M50 (Nouryon) curing agent to 100 g of resin.
Typical Properties of Liquid Resin
| Property | Value | Unit | Test Method |
|---|---|---|---|
| Flash Point | 33 | ℃ | TM 2800 |
| Shelf life, without anti-blocking agent, protected from light, 25°C | 3 | months | - |
Properties of Pure Resin Castings (Typical Values)
| Property | Value | Unit | Test Method |
|---|---|---|---|
| Density | 1110 | kg/m³ | - |
| Tensile Strength | 83 | MPa | ISO 527-2 |
| Tensile modulus | 3.5 | GPa | ISO 527-2 |
| Elongation at break | 4.2 | % | ISO 527-2 |
| Flexural strength | 153 | MPa | ISO 178 |
| Modulus of bending | 3.55 | GPa | ISO 178 |
| Heat Deflection Temperature | 115 | ℃ | ISO 75 Ae |
| Glass transition temperature | 132 | ℃ | DIN 53445 |
| Notched Impact Strength | 15 | kJ/m² | ISO 179 |
| Water Absorption (25°C) | 0.16 | % | ISO R 62 |
| Water absorption (100°C) | 0.22 | % | ISO R 117 |
| Brinell hardness | 40 | Barcol | ASTM D2583 |
Add 1.5 g of Butanox® M50 (Nouryon) curing agent to 100 g of resin; cure
at room temperature for 24 hours, followed by post-curing at 100°C for 3 hours
Test conditions: Temperature 23±2 °C, relative humidity 50±5%
Properties of Glass-Fiber-Reinforced Resin Composites (Typical Values)
| Property | Value | Unit | Test Method |
|---|---|---|---|
| Density | 1320 | kg/m³ | - |
| Glass Fiber Content | 30 | % | - |
| Tensile Strength | 105 | MPa | ISO 527-2 |
| Tensile Modulus | 7.4 | GPa | ISO 527-2 |
| Flexural strength | 160 | MPa | ISO 178 |
| Modulus of bending | 6.8 | GPa | ISO 178 |
| Compressive strength | 175 | MPa | ASTM D695 |
| Notched Impact Strength | 115 | kJ/m² | ASTM D256 |
| Coefficient of linear expansion | 30×10⁻⁶ | K⁻¹ | ASTM D696 |
| Thermal Conductivity | 0.21 | W/m·K | DIN 52612 |
Add 1.5 g of Butanox® M50 (Nouryon) curing agent to 100 g of resin;
The laminate is constructed using chopped strand mat OCF M 710 or Vetrotex M 113 (450 g/m²);
after curing at room temperature for 24 hours, post-cure for 3 hours at 100°C
Operating Conditions and Resin Properties
Gel time in a cup: Add 3.0 g of medium-reactivity MEKP to 200 g of resin
| Temperature | Gel time in a beaker | Unit |
|---|---|---|
| 15°C | 45 | minutes |
| 20°C | 35 | minutes |
| 25°C | 20 | minutes |
Resin Gel Time and Hardness Development (Typical Values)
Laminate structure: 4 layers of chopped strand mat (450 g/m²);
Ambient temperature: 23 °C
| Type | 1.5% MEKP | 2.0% MEKP | Unit |
|---|---|---|---|
| Resin pot life | 28 | 24 | minutes |
| Laminate gel time | 42 | 37 | minutes |
Barcol hardness (ASTM D2583)
| Time | 1.5% MEKP | 2.0% MEKP | Unit |
|---|---|---|---|
| 1.5 | 0 | 0 | Barcol |
| 2.0 | 10 | 10 | Barcol |
| 2.5 | 20 | 20 | Barcol |
| 3.0 | 30 | 30 | Barcol |
| 24 | 40 | 40 | Barcol |
| 48 | 40 | 40 | Barcol |
Process Operation Guidelines
- Before use, the resin must be stored under suitable temperature and humidity conditions for a consistent period of time. When using the MEKP/Co curing system, the operating temperature should generally be above 15°C;
- Atlac® 580 ACT resin contains an accelerator; when using it, add the curing agent MEKP, ensuring that the curing agent is within its shelf life.
- Workshop temperature should be maintained between 18°C and 32°C, and workshop humidity should be maintained between 40% and 90%. Consistent workshop conditions ensure consistent gel times and help manufacturers produce high-quality products.
- At lower temperatures, dimethylaniline (DMA) can be used to adjust the gel time.
- To achieve optimal physical and chemical properties, the product should undergo a curing treatment at a high temperature (e.g., 80°C) for several hours before use.