1、 ENGINEERING MATERIAL SPECIFICATIONMaterial Name Specification NumberDate Release No. Released1994 11 22 Revised and Retyped was: 9 pages1983 06 27 SM/EQ 5371 TP ReleasedWP 3948-a Page 1 of 5 ADHESIVE, HOT MELT, ETHYLENE VINYLACETATE BASED ESK-M2G268-A1. SCOPEThe mat erial defined by this specificat
2、ion is a thermoplastic, pressuresensitive hot melt adhesive and is based ethylene vinylacetate.2. APPLICATIONThis m aterial was originally released to bond antisqueak pad to fuel tankshield as an assembly and locating aid.Prior to the release for a particular application and in addition to therequir
3、 ements specified herein, full evaluation as a component of specifictrim p roduct must be ensured by the affected Component Engineeringactivity.3. REQUIREMENTS3.1 COLOR Opaque-transparent or a s specifiedon Engineering drawing3.2 SOLIDS, min 99 %(FLTM EU-BV 50-10)3.3 ASH, max 1.0 %(FLTM EU-BV 50-10)
4、3.4 DENSITY at 20 C 0.96 +/- 0.05 g/cm3(ASTM E 12)3.5 SOFTENING POINT 74 +/- 3 C(ASTM E 28, ring and ball apparatus)3.6 VISCOSITY(Brookfield RVT/Thermosel, Spindle No. ST4/27rotational frequency 1/minute; alternativeHaake Rotovisco, PK II, 54/min)At 190 C 13 200 +/- 15 %At 200 C 10 500 +/- 15 %At 21
5、0 C 9 500 +/- 15 %ENGINEERING MATERIAL SPECIFICATIONESK-M2G268-AWP 3948-b Page 2 of 5 3.7 SHEAR STRENGTH, min 60 N/cm2Test Method:1) Apply sufficient adhesive at the applicati on temperature of 190 -210 C to a 25 x 10 mm area of a 25 x 75 mm non-impregnated canvasfabric piece (having a minimum tensi
6、le strength of 1 kN/50 mmwidth) to a thickness of approx. 0.8 mm.2) Immediately after adhesive application pla ce the adhesive side ofthe c anvas fabric specimen on a polished stainless steel panel(of 0.8 to 1.0 mm thickness) and roll the overlapped area oncewith a 2 kg roller per ASTM D 1000 (see f
7、ig. 1).3) After 1 hour at room temperature test shea r strength at a rate of25 mm/minute.3.8 PEEL ADHESION (180 deg)1) Apply sufficient adhesive at the applicati on temperature of 190 -210 C t o a 25 x 100 mm area of a 25 x 250 mm non-impregnatedcanva s fabric piece (having a minimum tensile strengt
8、h of1 kN/50 mm width) at a thickness of approx imately 0.8 mm (Fig 2).2) As per clause 3.7.3) As per clause 3.7 (Fig. 2).4) After 1 hour at room temperature test 180 deg peel adhesionaccording to ASTM D 1000.3.8.1 Original, min 30 N/cm3.8.2 After Ageing No loss of adhesion(14 days at 70 +/- 2 C, 1 h
9、ourat room temperature)3.9 QUALITYThe material shall be o f uniform quality, free from foreign materialand properties detrimental to normal production use.3.10 SUBSTANCE CONTROLLegal, health, safety a nd environmental constraints may apply to themate rials which are submitted for approval to this sp
10、ecification.Refer to Engineering Material Specification SK-M99P9999-A.3.11 SUPPLIERS RESPONSIBILITYAll materials supplied to this specification must be equivalent inal l characteristics to the material upon which approval wasoriginally granted.ENGINEERING MATERIAL SPECIFICATIONESK-M2G268-AWP 3948-b
11、Page 3 of 5 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 specificationrequir ements, the Supplier shall notify
12、 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 restrictions imposed by law, regula
13、tions or Ford, apply tothe materials addressed by this document. The restrictions aredefined in Engineering Materials Specification WSS-M99P9999-A1.4. APPROVAL OF MATERIALSMat erials defined by this specification must have prior approval by theresp onsible Materials Engineering activity. Suppliers d
14、esiring 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 test reports, signed by
15、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 engineering approval of amateri al
16、 will be based on its performance to this specification and on anassessment of suitability for intended processes and/or applications. Uponapprov al, the material will be added to the Engineering Material ApprovedSource List.5. GENERAL INFORMATIONThe information given below is provided for clarifica
17、tion and assistancein meeting the requirements of this specification.5.1 STORAGE STABILITY(From date of receipt at Ford Motor Company)12 months, when stored between 5 C to 28 C.5.2 SENSITIVITY TO MOISTUREBecause of sensitivity to moisture this material must not be used asa permanent adhesive for exterior applications.ENGINEERING MATERIAL SPECIFICATIONESK-M2G268-AWP 3948-b Page 4 of 5 ENGINEERING MATERIAL SPECIFICATIONESK-M2G268-AWP 3948-b Page 5 of 5
