Technology: Polyurethane Electrical Protective Coating
Product Code: URALITE FH1270
Manufacturer: H.B. Fuller Company
Package Size: Not specified (check with supplier)
Shelf Life: 12 months unopened
H.B. Fuller URALITE FH1270 is a two-component, high-solids, thermosetting polyurethane film designed for electrical insulation. It is non-toxic and offers strong protective properties when applied to printed circuit assemblies. The material meets Raytheon’s HMS #16-1847 Rev. L, Type II, Class 1 specification for high-solids brush applications.
FH1270 is ideal for:
| Property | Part A | Part B | Blend |
|---|---|---|---|
| Blending Ratio (by weight) | 66 | 100 | – |
| Color | Yellow | Colorless | Yellow |
| Color Modifier | Light | Light | – |
| Density (lb/gal, ASTM D0792) | 7.91 | 9.4 | 8.75 |
| Viscosity (cP, 25°C, TMTS001) | 500 | 300 | 300 |
| Shelf Life (months) | 12 | 12 | – |
| Solid Content (% Non-Volatiles, TMWB052) | 75% | 60% | – |
| Specific Gravity (D792/D1475) | 0.95 | 1.13 | – |
| Odor | Ester-like | Solvent | – |
| Solvent System | PM Acetate, Toluene | – | – |
| Property | Value | Test Method/Condition |
|---|---|---|
| Gel Time (83g, 23°C) | >6 hours | – |
| Tack-Free Time (93°C) | 25 – 30 min | TMTS074 |
| Viscosity Flow Index (Zahn Cup #2) | 36 – 44 sec | TMSC077 |
| Dielectric Strength | 579 V/mil | – |
| Dielectric Constant (1 MHz) | 3.26 | – |
| Dissipation Factor (1 MHz) | 0.021 | – |
| Volume Resistivity | 1.9 × 10¹⁶ ohm-cm | – |
| Surface Resistivity | 8.22 × 10¹⁶ ohm | – |
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