Flame-Retardant Bisphenol A Epoxy Vinyl Ester Resin
Properties of Pure Resin Castings (Typical Values)
| Properties | AC Series | CC Series | CD Series | CN Series | E Series |
|---|---|---|---|---|---|
| Tensile Strength (MPa) | 86 | 83 | 83 | 76 | 86 |
| Modulus of elasticity (GPa) | 3.6 | 3.6 | 3.6 | 3.7 | 3.5 |
| Elongation at Break (%) | 4.7 | 5.4 | 4.6 | 3 | 4.5 |
| Bending Strength (MPa) | 147 | 143 | 143 | 138 | 149 |
| Modulus of bending (GPa) | 3.7 | 3.7 | 3.7 | 3.9 | 3.7 |
| Heat Deflection Temperature (°C) | 116 | 112 | 112 | 114 | 114 |
| Barcol hardness | 39 | 40 | 40 | 34 | 39 |
Typical Liquid Properties*
| Version | Viscosity (cps) | Thixotropic Index | Gel Time (min) | Gel to Exothermic Peak (min) | Exothermic Peak Temperature (°F/°C) | Density (g/cm³) | Styrene Content (%) |
|---|---|---|---|---|---|---|---|
| K022-ACA-00 | 450¹ | NA | NA | 13 | 340/171 | 1.15 | 39 |
| K022-ACP-20 | 450¹ | N/A | 20 | 11 | 365/185 | 1.16 | 39 |
| K022-ACT-30 | 450¹ | 2.5⁴ | 30 | 14 | 350/177 | 1.15 | 40 |
| K022-CCC-00 | 450¹ | NA | 22 | 12 | 330/166 | 1.15 | 39 |
| K022-CCK-18 | 500³ | 2.0⁴ | 18 | 14 | 350/177 | 1.11 | 44 |
| K022-CCL-00 | 500³ | 2.0⁴ | 25 | 15 | 365/185 | 1.11 | 44 |
| K022-CDC-00 | 350¹ | NA | 22 | 12 | 335/168 | 1.13 | 42 |
| K022-CNC-00 | 450¹ | NA | 35 | 13 | 350/177 | 1.16 | 39 |
| K022-CND-00 | 350¹ | NA | 22 | 12 | 335/168 | 1.13 | 41 |
| K022-CNP-25 | 450¹ | NA | 25 | 14 | 350/177 | 1.16 | 39 |
| K022-EAA-40 | 225³ | NA | 40 | 13 | 226/130 | 1.12 | 43 |
| K022-EBB-00 | 225³ | NA | 25 | 12 | 350/177 | 1.12 | 43 |
77°F/25°C Brookfield RV viscosity, Rotor No. 2, 20 rpm
77°F/25°C Gel time: 0.3% cobalt, 6%, 0.05% DMA, and 1.25% MEKP
77°F/25°C Brookfield LV viscosity, Rotor No. 3, 60 rpm
Thixotropic Index: 6/60 rpm
77°F/25°C Gel Time: With 1.25% MEKP
added *The typical values listed here should not be construed as technical specifications.The gel times shown are typical values but may be affected by catalyst, accelerator, and polymerization inhibitor concentrations, as well as resin type, mold, and shop temperature. Gelation characteristics may vary with different types of initiators and under conditions of extremely high humidity. Pigments and/or fillers may delay or accelerate gelation.Manufacturers are advised to verify the gelation characteristics of a small amount of resin under actual operating conditions prior to use.
Product Description
The AOC Vipel® K022 series consists of styrene-soluble brominated bisphenol A epoxy vinyl ester resins.The Vipel® K022 series is ideal for hand lay-up, spray-up, filament winding, and pultrusion processes that require excellent mechanical properties, chemical resistance, and heat resistance.
The Vipel® K022-CN series contains antimony.
Main Applications
The Vipel® K022 series is a flame-retardant resin suitable for products subjected to particularly high static or dynamic loads, such as chimneys and
linings, fire-resistant equipment, building panels, and flooring materials.
Performance Characteristics
Flame Retardant
Certain versions of Vipel® K022 meet the ASTM E 84 Class I flame spread requirements without the need for antimony trioxide.
Mechanical Properties
Vipel® K022 is suitable for products subjected to particularly high static or dynamic loads. Vinyl ester resins offer excellent sustained heat resistance.
Versatility
Extensive formulation capabilities make it suitable for many processes and enable optimization of both cost and performance.
Corrosion Resistance
Vipel® K022 exhibits strong corrosion resistance in a wide range of chemical environments. For information on corrosion resistance or questions regarding the resin’s suitability for any specific chemical environment, please refer to AOC’s “Resin Corrosion Resistance Guide” or contact AOC.
Flame Retardancy
ASTM E84 TUNNEL TEST*
| Version | Sb₂O₃ (%) | Flame Spread | Smoke Index |
|---|---|---|---|
| K022-AC Series | 25 | 500 | |
| K022-CC Series | 30 | 563 | |
| K022-CNC and CNP Series | 10 | 650 | |
| K022-CND-00 | 15 | 900 | |
| K022-CD Series | 40 | 765 | |
| K022-CD Series | 1.5 | 10 | 800 |
| K022-EAA Series | 10 | 800 |
Laminate structure: 2 layers of 2.0 ounces per square foot (600 g/m²) chopped strand mat, 30% glass fiber content; the laminate is post-cured for 3 hours at 100°C.
Processing Guidelines
- Maintain the hardener dosage between 1.0% and 2.5% of the total resin weight to achieve adequate cured strength;
- The workshop temperature should be maintained between 18°C and 32°C, and the humidity should be maintained between 40% and 90%. Consistent workshop conditions ensure consistent gel times and help manufacturers produce high-quality products.
- Finished products cured at room temperature in contact with air should have a surface that is relatively non-tacky to the touch. However, they may not be fully cured and therefore may not exhibit the same chemical resistance as fully cured products. If no further lamination is planned, a 10% solution of styrene containing 5% paraffin (melting point:
- 46–48°C) to the final layer of resin to achieve a non-tacky surface.
- Vipel® K022 series composite products that have already cured at room temperature can be post-cured at 70–100°C for two hours to achieve optimal curing and performance.
- For room-temperature curing promoted by a cobalt salt solution, use an MEKP initiator with a high dipolymer content to minimize bubble formation.