1、 ENGINEERING MATERIAL SPECIFICATIONMaterial Name Specification NumberDate Release No. Released1991 09 03 DF00E00107002060 -A3 Added, Para 4. updated L. Rumao1990 07 11 DE00E00107002060 Revised, Added A2 J. Huebner1987 05 08 CF4R107002-14 ReleasedWP 3948-a Page 1 of 4 VARNISH, HIGH TEMPERATURE POLYES
2、TER ESF-M7J40-ARESIN - HIGH SOLIDS 2 PARTS - ESF-M7J40-A2ELECTRICAL INSULATING ESF-M7J40-A31. SCOPEThe materials defined by these specifications are high h eat distortion typepolyester resins, where medium viscosity, fast cure and retention ofst rength and electrical properties under high temperatur
3、e conditions arerequired.ESF-M7J40-A Medium ViscosityESF-M7J40-A2 Low ViscosityESF-M7J40-A3 High Viscosity2. APPLICATIONThese specifications were relea sed originally for coating and impregnatingalternator stators and rotors.3. REQUIREMENTS3.1 STATISTICAL PROCESSSupplie rs must conform to the requir
4、ements of Ford Quality 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 SPECTRO
5、PHOTOMETRY AND/OR THERMAL 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 the
6、designated material laboratory. 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
7、 +/- 2 C and 50 +/- 5 % relativehumidity for not less than 24 h prior to testing and tested under thesame conditions unless otherwise specified.ENGINEERING MATERIAL SPECIFICATIONESF-M7J40-A/A2/A3WP 3948-b Page 2 of 4 A A2A33.4 MIXING RATIO BY WEIGHTThis material shall be mixed as follows:Polyester r
8、esin 100 100 100Curing agent - tertiary butyl perbenzoate 1 1 13.5 SPECIFIC GRAVITY, Part A 1.10- 1.05- 1.03-(ASTM D 154 at 23 +/- 2 C) 1.20 1.15 1.133.6 VISCOSITY, Part A, s 60- 40- 150-(FLTM BI 111-01 at 23 +/- 2 C) 100 60 3203.7 WEIGHT PER VOLUME, Part A, kg/L 1.10- 1.07- 1.031.20 1.11 1.133.8 FL
9、ASH POINT, Part A, C, min 33 31 54(ASTM D 93)3.9 SOLIDS, Part A, %, by weight, min 70 +/- 68 +/- 72 +/-(FLTM BI 102-01) 2 2 33.10 SEDIMENT-CENTRIFUGING, Part A Clear - no sediment(30 minutes at 2400 rpm)3.11 CURINGThe material shall completely cure in 20 minutes at 150 C.Test Meth od: Place 10 g of
10、the catalyzed material in a 64 mmdiameter aluminum evaporation dish and bake for 20 minutes at 150 +/-1 C. Remove from oven, air cool to room temperature and inspectvarnish for internal tackiness.3.12 CHARACTERISTICS AFTER CURINGThe bak ed finish shall be hard, adherent and resistant to bending.The
11、finish shall not lo se its physical or insulating properties whensubjected to the long continuous action of heat and electricalstress. The finish shall also be resistant to the action ofal kalies, acids, oils and moisture that may be present in itsapplication environment.3.13 DIELECTRIC STRENGTH S/T
12、 min, 13 50 80V/micrometre(ASTM D 115, except dip onceinto catalyzed as received materialand test resulting thickness)ENGINEERING MATERIAL SPECIFICATIONESF-M7J40-A/A2/A3WP 3948-b Page 3 of 4 A A2 A33.14 HELICAL COIL BOND STRENGTH, kg, min23 +/- 2 C 12.7 13.0 13.0149 +/- 3 C 6.8 4.1 3.5Test Method:
13、Prepare helical coils of #15 gage ESF-M2L46-ANylon-Acetal insulated copper magnet wire on a 6.4 mm mandrel. Windeac h turn of wire closely together under even tension to a coillength of 75 mm. Place 12 of the 75 mm coils on a fixture. Dip intothe catalyzed varnish as received. Withdraw a r ate of 10
14、0 mm/minute.Dip and bake cycle is listed below.5 minutes Dip10 minutes Drain60 minutes Bake 150 C10 minutes CoolPlace the samples in a flexural testing type jig such as is availableat Rawsonville Quality Control Laboratory. Apply the load in thecenter of 51 mm span on the coils through a lever syste
15、m attached tothe heating chamber and testing jig. The load is lead shot pouredinto a pail attached to the lever. When the testing is performed at149 C, the sample is pl aced into the jig and allowed to stand for 15mi nutes prior to load application to bring sample up to thetemperature.3.15 SUPPLIERS
16、 RESPONSIBILITYAll materials supplied to this specification must be equivalent inal l characteristics to the 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
17、under this specification, whether or not suchchange s affect the materials ability to meet the specificationrequir ements, the Supplier shall notify Purchasing, Toxicology andthe affected Materials Engineering activity of the proposed changesand obtain the written approval of the Materials Engineeri
18、ngactivity. Test data, t est samples and a new code identification areto be submitted with the request.Substance 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, unl
19、essa different suffix (e.g., A2 or A3) is specified on the engineeringdocument for the application.ENGINEERING MATERIAL SPECIFICATIONESF-M7J40-A/A2/A3WP 3948-b Page 4 of 4 4. APPROVAL OF MATERIALSMat erials defined by this specification must have prior approval by theresp onsible Materials Engineeri
20、ng activity. Suppliers desiring approvalof thei r materials shall first obtain an expression of interest from theaffec ted Purchasing, Design and Materials Engineering activity. Uponrequest, the Supplier shall submit to the affected Materials Engineeringactivity a completed copy of their laboratory
21、test reports, signed by aqualified and authorized representative of the test faci lity, demonstratingful l compliance with all the requirements of this specification (testresults, not nominal values), the material designation a nd code number, andtes t specimens for Ford evaluation. Fords engineerin
22、g approval of amateri al will be based on its performance to this specification and on anassessment of suitability for i ntended processes and/or applications. Uponapprov al, the material will be added to the Engineering Material ApprovedSource List.5. GENERAL INFORMATIONThe information given below
23、is provided for clarification and assistancein meeting the requirements of this specification.5.1 SHELF LIFE, min 6 months(Unopened - from the date of shipment)5.2 FLAMMABILITYThis material represent s a potential fire hazard. The ManufacturingEngineering Department shall notify both the security and the safetyunits of its presence in the plant. The locatio n in which it is usedor stored shall be included in the notification.
