1、 ENGINEERING MATERIAL SPECIFICATIONMaterial Name Specification NumberDate Release No. Release/Revision1988 08 01 B/031514 TP Completely Revised and Retyped1983 06 27 SM/EQ 5371 TP ReleaseWP 3948-a Page 1 of 4 ADHESIVE, STYRENE BUTADIENE, ESK-M2G269-AHOT MELT, FILLED1. SCOPEThe material defined by th
2、is specification is a pressure sensitive hot meltadhesive and is based on styrene butadiene rubber.2. APPLICATIONThis specification was originally released for material used to bondmoulded headlining part to roof.3. REQUIREMENTS3.1 STATISTICAL PROCESSSupplie rs must conform to the requirements of Fo
3、rd 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 SPECTROPHOTOMETRY A
4、ND/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 thedesignated m
5、aterial 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 +/- 2 C and
6、 50 +/- 5 % relativehumidity for not less than 24 h prior to testing and tested under thesame conditions unless otherwise specified.3.4 COLOUR light brown-transp.o r as specified onEngineering drawing3.5 SOLIDS, min 98 %(FLTM BV 150-10)ENGINEERING MATERIAL SPECIFICATIONESK-M2G269-AWP 3948-b Page 2 o
7、f 4 3.6 ASH, max 1 %(FLTM BV 150-10)3.7 DENSITY 1,0 +/- 0,05 kg/L(ASTM D 816)3.8 SOFTENING POINT 98 +/- 5 C(ASTM E 28, Ring and Ball Apparatus)3.9 VISCOSITY(ASTM D 4402,Brookfield RVT/Thermosel, Spindle No. SC4/27, 5 cycles/min)at 160 C: 22000 - 34000 mPasat 170 C: 14000 - 22000 mPasat 180 C: 10000
8、 16000 mPas3.10 SHEAR STRENGTH, min 0,55 MPa(FTLM EU-BU 51-1, Method A, Fig. 4)3.10.1 Test Method1. Appl y adhesive at the application temperature of 150 -170 C on a 25 x 10 mm area of a non impregnated canvasfabric piece to a thickness of approx. 1 mm.2. Allow the specimen with the applied adhesiv
9、e to standfor 5 min at 23 +/- 2 C.3. Place the adhesive side of the canvas fabric specimen ona polished stainless steel panel and roll the overlappedarea for 10 s with a 2 kg roller per ASTM D 1000.4. After 1 h at 23 +/- 2 C test shear st rength at a rate of25 mm/min.3.10.2 Aged Tacka) 30 min after
10、application, min 0,50 MPab) 2 h after application, min 0,50 MPaTest MethodTest specimen preparation according to 3.10.1, exceptparagraph 2. Prepare separate specimens for the 30 min and2 h dwelling time at 23 +/- 2 C of the applied a dhesive priorto bonding.3.10.3 After AgeingMaximum loss based on t
11、hemeasured original value 20 %(14 d at 70 +/- 2 C, 1 h at 23 +/- 2 C)ENGINEERING MATERIAL SPECIFICATIONESK-M2G269-AWP 3948-b Page 3 of 4 3.10.4 After Environmental CyclingMaximum loss based on themeasured original value 40 %Specimen are exposed to 5 cycles of the following sequence16 h at 38 +/- 2 C
12、 and 98 +/- 2 % RH4 h at -40 +/- 1 C4 h at 70 +/- 2 C3.10.5 After Humidity AgeingMaximum loss based on themeasured original value 40 %(72 h at 38 +/- 2 C and 98 +/- 2 % RH1 h at 23 +/- 2 C)3.10 QUALITYShall be a smooth, homogeneous mixture, free from foreign materialsand properties detrimental to no
13、rmal production use. The materialmust be capable of regaining its initial physica l characteristics andperformance after recirculation or agitation prior to use.3.11 SUPPLIERS RESPONSIBILITYAll materials supplied to this specification must be equivalent inal l characteristics to the material upon wh
14、ich approval wasoriginally granted.Pr ior to making any changes in the properties, composition,co nstruction, color, processing or labelling of the materialorig inally approved under this specification, whether or not suchchange s affect the materials ability to meet the specificationrequir ements,
15、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.Substance restrictio
16、ns imposed by law, regulations or Ford apply tothe material 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.ENGINEERING MATERIAL SPECI
17、FICATIONESK-M2G269-AWP 3948-b Page 4 of 4 4. APPROVAL OF MATERIALSMat erials defined by this specification must have prior approval by theresp onsible Materials Engineering activity. Suppliers desiring approvalof thei r materials shall first obtain an expression of interest from theaffec ted Purchas
18、ing, 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. Up
19、on approval, the material will be addedto the Engineering Material Approved Source List.5. GENERAL INFORMATIONThe information given below is provided for assistance and clarificationand does not represent requirement(s) to this specification.5.1 STORAGE STABILITY 12 months(from date of receipt at FM
20、C)The material must be st able during storage at temperatures between 5C and 32 C.5.2 RECOMMENDED OPERATION TEMPERATURE 150 - 175 C5.3 DEGRADATION POINT 190 CIf the temperature of the adhesive exceeds the d egradation point, theadhesive will decompose and all physical properties become adverselyand permanently affected. The material is not to be used once thedegradation point has been exceeded.
