Knowde Enhanced TDS
Identification & Functionality
- Chemical Family
- Composite Materials Functions
- Technologies
- Product Families
Features & Benefits
- Materials Features
- Features
- It can be applied by brush or roller while guaranteeing low toxicity working conditions to the users. The recommended application thickness is around 600μm which is possible to achieve in one coat on a vertical surface without sag. Laminates can be released from the molds after room temperature curing. Optimal thermomechanical & chemical properties will be obtained after a post curing cycle defined later in this technical data sheet.
- 7080 HCF GRIS / 7086 HCF is a lower viscosity system to be used when access in the tank is not possible. It enables coating/sealing/relining by rolling the tank once this system has been poured inside.
- Easier application
- Improved shiny & glossy film
- Improved anti-sagging properties
- Lower density
- Improved coating impermeability
Applications & Uses
- Applications
- Composites End Use
- Applications
- 7080 HC GRIS / 7086 HC can be applied by brush or roller.
- The average consumption is 0.7kg/m2 for a 600μm dry film.
- As an indication, it is possible to overcoat the gelcoat with a laminating resin as long as the gelcoat’s
- surface still has tack (timing to be defined by workshop temperature).
- It is recommended to sand and degrease before laminating onto the gelcoat if the surface has cured and formed its film (tack-free surface).
- Other application method such as using chopped fiber to ensure mechanical adhesion or delaying the gel by applying thin layers of gelcoat with a short open time between layer may be applied. In all cases testing in production conditions should be conducted in order to validate the method before industrial size applications.
- It is recommended to have workshop temperature conditions between 18-25°C in order to facilitate the mixing and the application, even though this system has very little sensitivity to humidity.
- A lower temperature will increase the viscosity of the mix as well as its pot life. On the contrary, a higher temperature will reduce the viscosity and the pot life of the mix.
- Mixing Ratio
Systems 7080 HC GRIS / 7086 HC Mixing ratio by weight 100 / 40 Warning: the mixing ratio must be accurately followed. It is not possible to change the ratio, it would result in lower mechanical properties. The mixture should be thoroughly stirred to ensure full homogeneity. It is important to note that epoxy systems tend to heat up much faster in a pot than as a thin film. It is preferable to only mix the necessary amount usable within the given potlife. Keeping the mixture in flat open containers reduces the risks of exothermic reaction.
Properties
- Mechanical Properties
- Physical Properties
- Typical Properties
| Value | Units | Test Method / Conditions | |
| Curing Cycle (23°C) | 14.0 | — | — |
| Hardness | 87.0 | — | Shore D |
| TG | 55.0 | °C | — |
| Value | Units | Test Method / Conditions | |
| Density (23°C) | 1.2 | — | — |
| Mix Viscosity (23°C) | 1.15 | mPa.s | — |
| Value | Units | Test Method / Conditions | |
| Gel time (film at 23°C) | 1h37min | — | — |
| Reactivity (70mL (~4cm thickness) at 23°C) | 35min | — | — |
| Temperature (Exothermic peak on 70mL at 23°C) | 179.0 | °C | — |
| Time (Exothermic peak on 70mL at 23°C) | 39min | °C | — |
Technical Details & Test Data
- Chemical Resistance
7080 HC GRIS / 7086 HC Diesel Unleaded 98 Unleaded 95 E10
Chemical resistance +++ +++ ++ Tests realized on gelcoat samples cured : 24h at 23°C +16h at 60°C & immersed during one year at 23°C.
+++ : Excellent
++ : Good
Safety & Health
- Health & Safety
- It is advised to follow basic rules such as avoiding skin contact, wear masks & gloves.
Packaging & Availability
- Packaging Type
- Packaging
Available kits of 7080 HC GRIS/ 7086 HC
- 1.4kg:(1+0.4)}kg
- 7kg: (5+2)kg
- 35kg: (26+10)kg
Fluid version 7080 HCF GRIS/ 7086 HCF
- 1.18kg: (0.88+0.3)kg
- 5.9kg:(4.4+1.5)kg
- 29.5kg: (22+7.5)kg
Possibility of ordering 7080 HC EPOXY PIGMENT PASTE (according to RAL color range).
Storage & Handling
- Storage
- Keep containers sealed and away from heat and cold preferably between 10°C and 30°C in a well ventilated area. Our products are guaranteed in their original packaging (check expiry date stated on the label).