Chemical/Physical Properties
Atlac® E-Nova FW 2045 is a modified epoxy bisphenol A vinyl ester polyurethane resin that is soluble in styrene.
Main Applications
Atlac® E-Nova FW 2045 can be used in all fabrication methods, but is particularly well-suited to meet the requirements of fiber winding, centrifugal casting, hand lay-up, and spray-up applications.
Atlac® E-Nova FW 2045 offers the same excellent thermochemical resistance to solvents, acids, and oxidizing media as epoxy-phenolic vinyl esters, while also providing resistance to alkalis.
E-Nova technology combines the processability of polyester with the chemical resistance of vinyl esters.Curing with standard MEKP peroxide results in low-foam curing, and it exhibits excellent fiber wetting compared to traditional vinyl ester resins. Atlac® E-Nova FW 2045 can be easily formulated into rheology modifiers.
Certification
After curing, unreinforced Atlac® E-Nova FW 2045 complies with Type 1310 of DIN 16946/2, is classified as Type 5 according to DIN 18820/1, and as Type 7B according to EN 12131/2.Atlac® E-Nova FW 2045 has received general approval from the German Institute for Building Technology (DIBt) for use in components containing stored chemicals.
Product Specifications
| Properties | Range | Unit | Test Method |
|---|---|---|---|
| Viscosity, 23°C | 350–450 | millipicoseconds | 2013 |
| Solid Content, IR | 58–61 | % | 2033 |
| Appearance | Clear – Slightly hazy | - | 2265 |
| Acid Value (as is) | 5.5–10 | mg KOH/g | 2401 |
| Gel time at 25°C to 35°C | 15–23 | minutes | 2625 |
| Curing time from 25°C to peak temperature | 22–32 | minutes | 2625 |
| Peak temperature | 150–180 | °C | 2625 |
: TM 2013: Physica, Z2/100/23°C
; TM 2625: Add 3.0 g of Accelerator NL49P and 2.0 g of Butanox M 50 (both from AKZO-Nobel) to 100 g of resin.
Properties of Liquid Resin (Typical Values)
| Property | Value | Unit | Test Method |
|---|---|---|---|
| Stability, unopened, dark, 20°C | 6 | months | - |
| Flash point (indicative) | 33 | °C | TM 2800 |
Properties of unfilled resin (typical values)
| Property | Value | Unit | Test Method |
|---|---|---|---|
| Tensile Strength | 90 | MPa | ISO 527-2 |
| Tensile Modulus of Elasticity | 3.5 | GPa | ISO 527-2 |
| Elongation at break | 3–4 | % | ISO 527-2 |
| Flexural strength | 140 | MPa | ISO 178 |
| Flexural modulus of elasticity | 3.7 | GPa | ISO 178 |
| Heat Deflection Temperature (HDT) | 145 | °C | ISO 75-Ae |
| Impact Strength—Notched Specimen | 25 | kJ/m² | ISO 179 |
| Hardness | 45 | Barcol | DIN EN 59 |
Curing characteristics were obtained using 0.3% Accelerator NL 51P, 0.2% Accelerator NL 63-10P, and 1.5% Butanox M 50 (all from AKZO-Nobel).All test specimens were cured at 100°C for 3 hours, followed by curing at 150°C for 3 hours.
Properties of the Reinforced Resin (Typical Values)
| Property | Value | Unit | Test Method |
|---|---|---|---|
| Glass Content | 30 | % | ASTM D 2584 |
| Tensile Strength | 120 | MPa | ISO 527-2 |
| Tensile Modulus of Elasticity | 8.3 | GPa | ISO 527-2 |
| Flexural strength | 210 | MPa | ISO 178 |
| Flexural modulus of elasticity | 8.7 | GPa | ISO 178 |
| Hardness | 60 | Barcol | DIN EN 59 |
The curing characteristics were obtained using 0.3% Accelerator NL 51P, 0.2% Accelerator NL 63-10P, and 1.5% Butanox M 50 (all from AKZO-Nobel).All test specimens were cured at 100°C for 3 hours, followed by 3 hours at 150°C. The laminate consisted of four layers based on 450 g/m² chopped strand glass fiber fabric.
Pre-Use Guidelines
Before use, the resin should be adjusted to a specific temperature based on the specific application conditions (typically a minimum of 15°C for MEKP/Co curing agents). Stir the product before mixing.