1、 ENGINEERING MATERIAL SPECIFICATIONMaterial Name Specification NumberDate Release No. Release/Revision1990 07 11 DE00E00107002060 Revised para 3.4.1 and updated J. Huebner1988 09 15 107002-185 CF45 ReleasedWP 3948-a Page 1 of 3 ENCAPSULANT - SILICONE DIELECTRIC GEL, ESF-M99G153-ATHIXOTROPIC1. SCOPET
2、he material defined by this specification is a very soft, 2 part,thixotropic silicone gel.2. APPLICATIONThis s pecification was released originally for a compound used in sealingand potting scap sensors.3. REQUIREMENTS3.1 STATISTICAL PROCESSSupplie rs must conform to the requirements of Ford Quality
3、 SystemStand ard Q-101. A mutually acceptable Control Plan as describedtherein is required for material/source approval. Appropriatestatist ical tools must be used to analyze process/product data sothat variation in the final product is continuously reduced.3.2 INFRARED SPECTROPHOTOMETRY AND/OR THER
4、MAL ANALYSISFord Motor Company, at its option, may conduct infrared and/ortherma l analysis of material/parts supplied to this specification.The IR spectra and thermograms established for i nitial approval shallconst itute the reference standard and shall be kept on file at thedesignated material la
5、boratory. All samples sha ll produce IR spectraand thermograms that correspond to the reference standard when testedunder the same conditions.3.3 CONDITIONING AND TEST CONDITIONSAll test values indicated herein are based on ma terial conditioned ina control led atmosphere of 23 +/- 2 C and 50 +/- 5
6、% relativehumidity for not less than 24 h prior to testing and tested under thesame conditions unless otherwise specified.3.4 REQUIREMENTS3.4.1 Viscosity - Brookfield Viscometer, mm2/s(ASTGM D 1082 Method B, Model RVT 5 rpm,#5 spindle)3.4.1.1 Part A 20,000 - 28,000ENGINEERING MATERIAL SPECIFICATIONE
7、SF-M99G153-AWP 3948-b Page 2 of 3 3.4.1.2 Part B 20,000 - 28,0003.4.1.3 Mixed 20,000 - 28,0003.4.2 Gel Time at 100 C 2 - 10 minutes(ASTM D 2471, mix components at R.T.)3.4.3 Hardness 2 - 8(FLTM BJ 23-3, cured 1 h at 150 C)3.5 To be run for initial approval and as required by Quality Control.Samples
8、cured 1 h at 150 C.3.5.1 Dielectric Strength, min 15 kV/mm(FLTM BJ 23-2, 1.5 mm thick)3.5.2 Specific Gravity 0.97 - 1.03.5.3 Volatility, loss, max 3.0 %(2 g for 2 h at 150 C)3.6 ADDITIONAL REQUIREMENTSSpecific requirements for material and/or manufa ctured parts shall bespecified on the Engineering
9、drawing, Engineerin g parts specificationand/or performance specifications. All critical areas with respect tothese properties shall be clearly designated on the engineeringdrawing.3.7 SUPPLIERS RESPONSIBILITYAll materials supplied to this specification must be equivalent inal l characteristics to t
10、he material upon which approval wasoriginally granted.Pri or to making any change in the properties, composition,constr uction, color, processing or labeling of the materialorig inally approved under this specification, whether or not suchchange s affect the materials ability to meet the specificati
11、onrequir ements, the Supplier shall notify Purchasing, Toxicology andthe affected Materials Engineering activity of the proposed changesand obtain the written approval of the Materials Engineeringactivity. Test data, t est samples and a new code identification areto be submitted with the request.Sub
12、stance restrictions imposed by law, regulations or Ford, apply tothe materials addressed by this document. The restrictions aredefined in Engineering Material Specification WS S-M99P9999-A1, unlessa different suffix (e.g., A2 or A3) is specified on the engineeringdocument for the application.ENGINEE
13、RING MATERIAL SPECIFICATIONESF-M99G153-AWP 3948-b Page 3 of 3 4. APPROVAL OF MATERIALSMat erials defined by this specification must have prior approval by theresponsible Materials Engineeri ng activity. Suppliers desiring approval ofthe ir materials shall first obtain an expression of interest from
14、theaffec ted Purchasing, Design and Materials Engineering activity. Uponrequest, the Supplier shall submit to the affected Materials Engineeringactivity its own laboratory rep ort to the specification (test results, notnominal values), the material designation and code number, and testspecim ens for Ford evaluation. Upon approval, the material will be addedto the Engineering Material Approved Source List.
