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Silicone compound meets requirements of UL 94V-0 flame classification

Wed, 10/20/2010 - 7:32am

RTVS 200 silicone compoundRTVS 200 is a self-adhering silicone compound that meets the requirements of Underwriters Laboratories’ UL 94V-0 flame classification. It exhibits superior electrical properties and retains flexibility over a wide temperature range. RTVS 200 was specifically formulated as a potting for junction boxes used on solar panels.

Properties Uncured

                                              Part A       Part B

Color, Visual:                          Black        Clear

Color Mixed :                                  Black

Viscosity @ 25oC, cps:           5,000          50        ASTM D1084

Mixed Viscosity, cps:                      4,000              ASTM D1084

Specific Gravity:                      1.37           0.97

Mixed Specific Gravity:                    1.33

Mix Ratio (By Weight):                     100:7

Mix Ratio (By Volume):                    100:10

Shelf Life @ 25oC, Months:                12

Pot Life @ 25o C, Mins:                     5-10

 

Properties Cured : Physical

Hardness, Durometer (Shore A): 50-60 ASTM D 2240

Tensile Strength, psi 380 - 450 ASTM D 412

Tensile Elongation, % 100 ASTM D 412

Tear Strength, Die B lb./in. 25 ASTM D 624

Shrinkage, % 0.2

Flammability, UL 94V0 Passes

Coefficient of Thermal Expansion, °C 20 x 10-5

Thermal Conductivity, BTU (in)/(ft2)(hr)(oF) 4.5

Thermal Conductivity, W/m-K 0.65

Useful Temperature Range, °C 55 to 204

 

Electrical

Dielectric Strength, volts/mil: 500 ASTM D 149

Dielectric Constant, 1 khz: 3.8 ASTM D 150

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