Glenair Mighty Mouse Connectors Catalog - Interstate Connecting ...

Series 80 Mighty Mouse Technical ReferenceGuidelines for Space-Grade ApplicationsReferenceOutgassing: What is2 outgassing and how does itaffect connector selection? Isspecial processing required tomeet outgassing requirements?What is outgassing?Plastic and rubber materials give offgaseous molecules. For example, the smellinside a new car is caused by polymeroutgassing. Heat and vacuum increase therate of diffusion. In a spacecraft the gasescoming off polymers can contaminateoptical surfaces and instruments. The resultis degraded performance.How is outgassing measured?The space industry has adopted a standardizedtest procedure, ASTM E 595, to evaluate outgassingproperties of polymers. Small samplesof material are heated to 125° C. at a vacuumof 5 X 10 -5 torr for 24 hours.Then the sample is weighed to calculateComponentOutgassing At-a-Glance1Fluorosilicone rubber componentsand encapsulants exceed NASAoutgassing limits.2NASA recommends outgassingprocessing to reduce outgassing toacceptable levels.3An inexpensive oven bakeout hasbetter results than the more costlythermal vacuum outgassing. The highertemperature of the oven bakeout is moreeffective at removing volatile materials.However, both methods assurecompliance with outgassing limits.4Glenair Mod 429 codes provide aneasy ordering solution, whateverthe outgassing option.Outgassing Properties of Materials used in Series 80 connectorsMaterialTML%TCVML% Test ReferenceFront and Rear Insulator Liquid Crystal Polymer Vectra C130 0.03 0.0 NASA Test # GSC17478Rear GrommetInterfacial SealPeripheral SealFront-To-Rear InsulatorBonding MaterialInsulator-to-Rubber BondingMaterialthe Total Mass Loss (TML). The TMLcannot exceed 1.00% of the total initialmass. During the test, outgassed mattercondenses on a cooled collector plate.The quantity of outgassed matter iscaluclated to determine the CollectedVolatile Condensable Material (CVCM). TheCVCM cannot exceed 0.10% of the originalspecimen mass.Is special outgassing processingnecessary on Series 80 connectors?NASA states “A bakeout for outgassingcontrol is driven by the application and maybe required where tight contaminationcontrol must be maintained.” NASAgenerally recommends that militarycircular connectors undergo outgassingprocessing. This processing can beperformed by Glenair; however, somecustomers prefer to fabricate higherlevel subassemblies before outgassingprocessing.Blended flourosilicone/siliconeelastomer, 30% silicone per ZZ-R-765,70% flourosilicone per MIL-R-259880.48 0.14Eccobond 104 A/B 0.52 0.08Glenair testing conductedat NuSil Technology02/27/2001Emerson & Cuming DataSheetDC3145 RTV, per MIL-A-46146 2.52 0.58 NASA Test GSC28621Coupling Nut Retainer Torlon® 4203L 1.88 0.01Glenair Test at NuSilTechnology 03-12-2003Coupling Nut Epoxy Hysol C9-4215 0.48 0.01 Glenair TestO-Ring Flourosilicone Rubber 0.32 0.03 NASA Test GSFC8687White Epoxy Ink forSilkscreeningMarkem 7224 White 0.49 0.03 NASA Test #GSC19899Black Ink for Part NumberIdentificationVideojet #16-5600Q TBD TBDPotting Compound, SolderCup and PC Tail ConnectorsHysol C9-4215 0.48 0.01 Glenair TestPotting Compound, SolderCup and PC Tail ConnectorsDC3145 RTV, per MIL-A-46146 2.52 0.58 NASA Test GSC28621Potting Compound, FilterReceptaclesStycast epoxy, 2850FT/Catalyst 11 0.29 0.02 Mfgr Data SheetABCDEFGHJKLMDimensions in inches (millimeters) and are subject to change without notice.© 2010 Glenair, Inc. CAGE Code 06324 Printed in U.S.A.GLENAIR, INC. • 1211 AIR WAY • GLENDALE, CA 91201-2497 • 818-247-6000 • FAX 818-500-9912www.glenair.com B-31 E-Mail: sales@glenair.com01-JANUARY-2010