Silicone 2C51
HumiSeal® 2C51 conformal coating is:
- silicone based
- fluoresces under UV light
- 2 component chemical cure
- high solids
HumiSeal 2C51 conformal coating has:
- No VOCs or solvent
- excellent environmental resistance and moisture resistance
- RoHS Directive 2011/65/EU compliant
Application of 2C51 Silicone Conformal Coating
Cleanliness of the substrate is of extreme importance for the successful application of HumiSeal 2C51. Surfaces must be free of moisture, dirt, wax, grease, flux residues and all other contaminants. Contamination under the coating could cause problems that may lead to assembly failures. Mixing ratio of Part A to Part B is 1:1 by volume (or weight). Prior to application, HumiSeal® 2C51 Parts A and B should be thoroughly mixed until a homogenous blend is achieved. Vigorous mixing is not recommended as entraps air pockets into mix.
Spraying
HumiSeal® 2C51 may be applied using conventional spraying equipment. Spraying should be done in an environment with adequate ventilation so that the vapour and mist are carried away from the operator. The use of thinner is not required or recommended for HumiSeal® 2C51.
Brushing
Uniformity of the film depends on component density and operator’s technique.
Properties of Mixed HumiSeal® 2C51
| Density (part A&B), per ASTM D1475 | 0.97 ± 0.03 g/cm³ |
| Solids Content, % by weight per Fed-Std-141, Meth. 4044 | 99.00% |
| Viscosity (Part A), per Fed-Std-141, Meth. 4287 | 275 ± 75 centipoise |
| Viscosity (Part B), per Fed-Std-141, Meth. 4287 | 550 ± 150 centipoise |
| VOC | 0 grams/liter |
| Drying Time to Handle per Fed-Std-141, Meth. 4061 | 10 minutes |
| Curing Condition to Reach Optimum Properties | 30 minutes @ 70°C or 60 min @ RT |
| Recommended Stripper | HumiSeal® Stripper 1091 |
| Gel Time at Room Temperature | 8-10 minutes |
| Shelf Life at Room Temperature, DOM | 12 months |
| Hardness, Shore 00 | 45-55 |
| Volume resistivity per ASTM D257 | 5.2 x 1013 Ohms.cm (52 TΩ.cm) |
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