CORINTHO® is an entirely new style of polyurethane modeling and tooling boards designed by our R&D team to be the DUNA Group’s flagship and specific product for all sectors requiring a high degree of precision, detail and machinability (both manual and CNC machines).
APPLICATIONS:
· Carbon prepreg layup molds
· Master models
· Vacuum forming
· CAD Design verification, prototyping
· Composite layup tooling
BLACK CORINTHO®
BLACK CORINTHO® is a low CTE, high-temp, highly stable polyurethane tooling board designed for a wide variety of tooling applications.
Its high thermal conductivity allows quicker autoclave and oven processing.
Designed to expand and contract under temperature, the BLACK CORINTHO® is ideal for use with high or low temperature curing prepregs where a high degree of stability or dimensional tolerances is desired.
FEATURES
· 200°C (400°F) service temperature
· High thermal conductivity = faster autoclave processing
· Ultra-low CTE, excellent dimensional stability
· High quality surface finishing
· Easy to machine, non-abrasive
APPLICATIONS
· Carbon pre-preg layup molds
· Master model
· Vacuum forming
· Prototyping modelling
BLUE CORINTHO® HT
BLUE CORINTHO® HT is a rigid polyurethane tooling board with exceptionally high glass transition temperature of +265°C (+509°F).
BLUE CORINTHO® HT is particularly suitable for master models and layup molds. It is also successfully used to make thermal breaks or supports in cryogenics.
FEATURES
· 200°C (400°F) service temperature
· High surface finishing and excellent internal consistency
· Ease of machining
APPLICATIONS
· Master model
· Vacuum forming
· Prototyping modelling
· Thermal breaks
· Cryogenic supports
BLUE CORINTHO®
Polyurethane board developed for modeling applications, tooling, rapid prototyping and vacuum forming at high-medium temperatures (up to 120°C–250°F). Along with the other products in the CORINTHO® line, it offers dimensional stability and chemical resistance.
ACCESSORY MATERIALS:
Our tooling solutions include accessory materials, designed to withstand high temperatures in autoclave and oven up to +200°C (400°F) without cracking or degradation and to expand and contract with tool under temperature. Available in blue or black coloring.
- Bonding: DUNAPOX™AD 135: Thixotropic, epoxy adhesive.
- Sealing: DUNAPOX™ SEA 125: Epoxy sealer. Can be sprayed, brushed or rolled. Once hardened, DUNAPOX™ SEA can be flatted “sanded” and polished to a high gloss. Cures to a tough, Shore D 85 protective surface.
Tooling guidelines available on request.
Please also see our standard CORAFOAM® High Density line of polyurethane tooling boards for pattern making, vacuum forming, check fixtures, and more.
| BLUE CORINTHO® 700 | BLUE CORINTHO® HT 700 | BLACK CORINTHO® 800 | BLACK CORINTHO® 1100 | |||
|---|---|---|---|---|---|---|
| Nominal density | EN ISO 845/EN 1602/ASTM D1622 | kg/m³ | 700 | 700 | 800 | 1100 |
| Hardness | EN ISO 868/ASTM D2240 | Shore D | 57 | 63 | 50 | 60 |
| Compressive strength - Parallel (23°C) | EN 826/ASTM D1621 | MPa | 22 | 28 | 15 | 40 |
| Compressive Modulus - Parallel (23°C) | EN 826/ASTM D1621 | MPa | 280 | 450 | 220 | 544 |
| Flexural strength - Parallel, Met.I (23°C) | EN 12089/ASTM C203 | MPa | 17 | 23 | 7 | 17 |
| Flexural modulus - Parallel (23°C) | EN 12089/ASTM C203 | MPa | 630 | 750 | 660 | 1640 |
| Max.flexural strain (23°C) - Met.I | EN 12089/ASTM C203 | mm/mm | 0,032 | 0,035 | 0,012 | 0,014 |
| Operating temperature | °C | -200/+120 | -200/+205 | 0/+200 | 0/+200 | |
| Thermal conductivity - Initial (24°C) | EN 12667/ASTM C518 | mW/mK | 96 | 109 | 264 | 380 |
| Glass transition temperature (Tg) | EN ISO 113572/ASTM E1356 | °C | 145 | 265 | 240 | 240 |
| Coefficient of linear thermal expansion CTE (+30/70 °C) | EN 13471/ASTM E228 | 1/K·10E-6 | 34 | 25 | 5 | 11 |
| Coefficient of linear thermal expansion CTE (+30/120 °C) | EN 13471/ASTM E228 | 1/K·10E-6 | 104 | 27 | 10 | 12 |
| Coefficient of linear thermal expansion CTE (+30/180 °C) | EN 13471/ASTM E228 | 1/K·10E-6 | 234 | 80 | 21 | 20 |
| Dimensional stability (180°C) - Length; Width; Thickness | EN 1604/ASTM D2126 | % | n.d. | -1,58; -1,53; -0,83 | -0,20; -0,20; -0,25 | -0,20; -0,20; -0,25 |
| Fire reaction | FAR 25-853A | n.d. | 12"/60" Passed | 12"/60" Passed | 12"/60" Passed |
