A.10.9. RTV S 695
PRODUCT
Type			Two-part, room-temperature-vulcanising adhesive.
Chemical Composition			Silicone.
Manufacturer	Wacker-Chemie GmbH Johannes-Hess-Str. 24, D-84489 Burghausen Germany			Tel: +49-86 77-83-20 04 Fax: +49-86 77-83-55 91 Email: www.wacker.de
EXPERIENCE & AVAILABILITY
Development Status			Special Commercial Product
Cost Range			Very High
Lot Reproducibility			Good
Space Experience			Fair
GENERAL PROPERTIES (Physical, Mechanical, Thermal, Electrical, Optical)
Nature			Typical Value		Remarks
Pot Life			8 hours (@ 23°C)		Manufacturer’s Data
Initial Viscosity			66 cps		Manufacturer’s Data
Hardness			12 (@ 23°C)		Manufacturer’s Data
Shear Strength			0.7 MPa (@ 23°C)		Manufacturer’s Data
Shear Modulus			0.2 MPa (@ 23°C)		Manufacturer’s Data
Thermal Expansion Coefficient			320 x 10^-6 °C^-1 76 x 10^-6 °C^-1		23°C to 100°C -180°C to -140°C
Thermal Conductivity			0.21 W m^-1 °C^–1		@ 93.5°C
Brittleness Temperature			-110°C		Manufacturer’s Data
Shelf Life			12 Months (room temperature)		Manufacturer’s Data
Glass Transition Temperature			-110°C		TMA
Refractive Index (h0)			1.424 to 1.428		Manufacturer’s Data (@ 25°C)
PROPERTIES RELEVANT TO SPACE USE
Nature		Typical Value				Type of Test
Temperature Range		-180°C to +200°C.
Outgassing		TML = 0.05%, RML =0.04%, CVCM = 0.01%				ECSS-Q-70-02
Thermal Cycling		Pass				ECSS-Q-70-04
UV Resistance		Similar to that of DC 93500
Flammability		Self Extinguishing Burnt				NASA NHB 8060-1B 21% O2 NASA NHB 8060-1B 24.5% O2
SPECIAL RECOMMENDATIONS
· Recommended proportions are 90 pbw A to 10 pbw B. Thorough mixing is necessary. · Cure: 7 days at room temperature. · Mechanical resistance of this adhesive is low. Its use is mainly for optical purposes; a typical application being as a solar-cell cover-glass adhesive.