LOCTITE PC 7255
Harmonization Code : 3907.30.00.40 | Epoxy Mold Compounds containing by weight more than 70 % silicon dioxide
Main features
- 2:1 Epoxy Mixing
- 55-Minute Pot Life
- 106 N/mm^2 Compressive Strength
Product Description
LOCTITE PC 7255 is a two-part, solvent-free ceramic-filled sprayable epoxy coating for protecting metal surfaces from abrasive and corrosive agents. Resin and hardener mix 2:1 by volume and by weight, and typical mixed Brookfield viscosity is 5,000 mPa s at 25 deg C. Typical pot life is 55 minutes for a 200 g mass by ISO 9514, with a 4-hour surface drying time at 22 deg C by ISO 1517. After seven days at 22 deg C, typical cured properties include 106 N/mm^2 compressive strength, Shore D 86 hardness, and 13 kV/mm dielectric strength. The material can be applied as a smooth protective coating or low-friction topcoat on industrial equipment surfaces.
Key features
- 2:1 Resin-to-Hardener Mix: The mix ratio is 2:1 by volume and 2:1 by weight.
- Typical 55-Minute Pot Life: Typical pot life is 55 minutes for a 200 g mass by ISO 9514.
- 13 kV/mm Dielectric Strength: After seven days at 22 deg C, typical dielectric strength is 13 kV/mm by IEC 60243-1.
Applications
Protective coating of industrial equipment surfaces subject to corrosion and abrasion, including heat exchangers, tanks, chutes, valves, and pump components.
TDS, SDS & Technical Documents
Technical Specifications
General Properties
Mechanical Properties
Thermal Properties
Electrical Properties
Other Properties
Additional Information
As supplied
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Mix ratio | 2:1 | Resin:hardener by volume | |
| Mix ratio | 2:1 | Resin:hardener by weight | |
| Resin viscosity | 12,000 | mPa s | Typical; Brookfield DVT; spindle 7; 100 rpm; 25 deg C |
| Hardener viscosity | 2,700 | mPa s | Typical; Brookfield DVT; spindle 7; 100 rpm; 25 deg C |
| Mixed viscosity | 5,000 | mPa s | Typical; Brookfield DVT; spindle 7; 100 rpm; 25 deg C |
| Vertical sag resistance | 700 | um | Typical; ISO 16862; mixed material at 25 deg C |
Cured coating
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Glass transition temperature | 63 | deg C | Typical; TMA; ISO 11359-2; cured 7 days at 22 deg C |
| Elongation at break | 1.4 | % | Typical; ISO 527-2; cured 7 days at 22 deg C |
| Shore hardness | 86 | Shore D | Typical; ISO 868; cured 7 days at 22 deg C |
| Tensile strength | 47 | N/mm^2 | Typical; ISO 527-2; cured 7 days at 22 deg C |
| Compressive strength | 106 | N/mm^2 | Typical; ISO 604; cured 7 days at 22 deg C |
| Dielectric strength | 13 | kV/mm | Typical; IEC 60243-1; cured 7 days at 22 deg C |
| Lap shear strength - mild steel | 31 | N/mm^2 | Typical; grit blasted; cured 7 days at 22 deg C |
| Taber wear weight loss | 45 | mg | Typical; H-18 wheels; 1 kg load; 1,000 cycles |
