Enhanced TDS
Identification & Functionality
- Technologies
Features & Benefits
- Ready-to-Use Product Features
- Product Highlights
- Our lab test of HydroArmor® 7740 show that it is extremely durable under even the worst service conditions:
- Several days at 96°C (205°F) and immersion in acidic and caustic solutions did not affect dried beads of this material.
- Beads did not lose adhesion or crack when test panels were bent at 34°C (-30°F).
- After weeks of exterior exposure cycling, the HydroArmor® coating remained intact and there was no adhesion loss.
- The highly flammability resistance and low smoke generation results obtained when tested under ASTM E162 and E662 permit this product to be used on passenger rail cars.
- HydroArmor® 7740 dries quickly at ambient temperatures or can be force dried after only 30 minutes dry time at room temperature.
- HydroArmor® 7740 is as safe to use and as easy to clean up as latex house paint.
- HydroArmor® 7740 provides better protection than any of the competitive products we’ve tested without environmental and safety problems inherent in many of the undercoatings available today.
Applications & Uses
- Markets
- Application Method
- Compatible Substrates & Surfaces
- Application Instructions
- As with any adhesive or sealant, all loose dirt and dust should be removed from the surface to be coated before application.
- HydroArmor® 7740 is designed to be applied with airless spray equipment. With this equipment, we can spray at 50 to 60 pounds air pressure using spray tips with orifices from 0.019” to 0.035”.
- As with all air motor pumps, adequate air volume is required.
- HydroArmor® resists water washoff after air drying 30 minutes at 45 - 55% relative humidity; if not baked, it dries through in 24 hours or less (drying is slowed by high humidity and poor air circulation).
- Until HydroArmor® 7740 dries, overspray can be removed and equipment can be cleaned with water. Dried material can be removed with methyl ethyl ketone.
Properties
- Color
- Typical Properties
- Technical Properties
Property Value Freeze/Thaw Stability: ASTM D 2243;
4 cycles to -29°C (-20°F)Pass
Sprayable after hand mixing
| Value | Units | Test Method / Conditions | |
| Specific Gravity | 0.71 - 0.77 | — | — |
| Solid Content | 45 - 48 | % | — |
| VOC Content | 13 - 15 | g/L | — |
| pH | 9 - 10 | — | — |
Technical Details & Test Data
- Test Data
The following tests were performed on panels coated with 15 dry mils of material after drying 21 days, at 20°C (68°F), and 50% RH Effects of Heat Aging:
ASTM C 792; 14 days, at 70°C(158°F)Flexibility maintained
No cracks
No loss of adhesionEffects of Exterior Exposure:
GMTM 9505P: Cycle ENo cracks
No loss of adhesion after two weeks of cyclingSurface Flammability: ASTM E 162 Value Avg. Flamespread Index (Is) 22.18 Flamespread Index Range 19.2 to 24.4 Optical Density of Smoke Generation ASTM E 662 Non-Flaming Flaming Ds at 1.5 min. (average) 0.2 25.0 Ds at 4.0 min. (average) 1.9 48.8 Dm(corr) (average) 15.4 116.9 Toxic Gas Generation
BSS 7239Gasses Detected in ppm
CO - 90, HCN - 1, SO2 - 5, HCL - 0, HF - 0, NO - 8, NO2 - 2
Packaging & Availability
- Regional Availability
Storage & Handling
- Shelf Life
- 6 Months