1、 ENGINEERING MATERIAL SPECIFICATIONMaterial Name Specification NumberDate Release No. Released1994 12 07 Revised and Retyped, was 14 pages1985 07 24 SM/EQ 5559 TP ReleasedWP 3948-a Page 1 of 7 ADHESIVE, EPOXY, HEAT CURING ESK-M2G287-A11. SCOPEThe ma terial defined by this specification is a flowable
2、, mineral filled,non-abrasive epoxy adhesive which cures above 120 C. Th e adhesive has highshear strength and a wide area of temperature and long term resistance toethylene glycol.2. APPLICATIONThis specification was released originally for material used for bondingthe aluminum heat exchanger to a
3、polyamide tank.3. REQUIREMENTS3.1 UNCURED MATERIAL3.1.1 Color Gray-black3.1.2 Viscosity (Pa.s)(Brookfield RVT, Spindle No. 6,testing time: 5 minutes)3.1.2.1 As ReceivedRotation Frequency Viscosity(1/minute) (Pa . s)At 20 C 5 80 - 120At 40 C 20 13 - 19At 60 C 100 2.5 - 3.83.1.2.2 After 7 Days at 38 +
4、/- 2 CAt 20 C, max 1403.1.3 Solids, min 99.0 %(FLTM EU-BV 50-10)3.1.4 Ash, max 34.0 %(FLTM EU-BV 50-10)3.1.5 Density at 20 C 1.70 +/- 0.05 g/cm3(ASTM D 1475)ENGINEERING MATERIAL SPECIFICATIONESK-M2G287-A1WP 3948-b Page 2 of 7 3.1.6 INFRARED SPECTROPHOTOMETRY AND/OR THERMAL ANALYSISFord Motor Company
5、, at its option, may conduct infraredand/o r thermal analysis of material/parts supplied to thisspeci fication. The IR spectra and thermograms establishedfor initial approval sh all constitute the reference standardand s hall be kept on file at the designated materiallaborat ory. All samples shall p
6、roduce IR spectra andtherm ograms that correspond to the reference standard whentested under the same conditions.3.2 Cured Material3.2.1 Shore Hardness “D“At 23 +/- 2 C 75 - 90At 120 +/- 2 C 70 - 80Test Method:1) Fill adhe sive of 60 C in a tin cup 80 mm diameter and6 mm high without bubbles.2) Cure
7、 adhesive at 135 +/- 2 C for 65 minutes.3) Deter mine shore hardness according to ASTM D 2240 afterdwell tim e of 15 seconds. Condition for 1 hour at thespecified test temperature prior to test.3.2.2 Aluminum/Aluminum Shear StrengthTest Method:1) Degre ase panels of aluminum (A1 Mg3 F21) 1.5 x 25 x1
8、00 mm using 1,1,1 trichloroethylene at 23 +/- 2 C.2) Dry panels at 60 +/- 2 C in a mechanical convection ovenfor 2 minutes.3) Imme rse panels in a solution of chromosulfuric acidac cording to DIN 53281 clause 4.3.1, for 30 minutes at63 +/- 2 C.4) Rinse panels twice with demineralized water afterremo
9、val.5) Dry p anels in a mechanical convected air dry oven at 60+/- 2 C for 10 minutes.6) Preheat panels and adhesive to 60 C. Apply adhesive andcopper wires as shown in Fig. 1 and clamp together.7) Cure at 135 +/- 2 C for 65 minutes and cool to roomtemperature.ENGINEERING MATERIAL SPECIFICATIONESK-M
10、2G287-A1WP 3948-b Page 3 of 7 8) Determi ne shear strength at a speed of testing of 15mm/minute. A minimum of 5 spe cimens shall be tested andthe average result shall conform to the requirementspecified below.3.2.3 Original3.2.3.1 Measured at 23 +/- 2 C, min 950 N/cm23.2.3.2 Measured at 120 +/- 2 C,
11、 min 950 N/cm2Conditio n for 30 minutes at 120 +/- 2 C prior totest.3.2.3.3 Measured at - 40 +/- 1 C, min 950 N/cm2Condition for 30 minutes at - 40 +/- 1 C prior totest.3.2.4 After Ageing3.2.4.1 Heat Ageing, max - 20 %(Based on original value)14 days at 70 +/- 2 C , 1 hour at 23 +/- 2 C.3.2.4.2 Resi
12、stance to CoolantNo loss of adhesion after 45 cycles.Test Method:1) Sp ecimens shall be immersed in a mixture of60 vo l % coolant according to SS-M97B9103-Aa nd 40 vol % water to the following cycle inthe sequence below:16 h at - 40 +/- 1 C )1 h at 23 +/- 2 C )6 h at 125 +/- 2 C ) 1 cycle1 h at 23 +
13、/- 2 C )After each 5 cycles, condition samples for2 days at room temperature.2) Condition at 23 +/- 2 C for 1 hour anddetermine shear strength.3.2.5 Aluminum/Polyamide Shear StrengthTest Method:1) Prepare aluminum panels (A1 Mg3 F21) of 1.5 x 25 x100 mm according to 3.2.2, clause 1 to 5.ENGINEERING
14、MATERIAL SPECIFICATIONESK-M2G287-A1WP 3948-b Page 4 of 7 2) Polya mide specimens to SK-M4D9686-A, 3 x 25 x 75 mmshall be dried in a mechanical convection oven at 105 Cfor 2 hours.3) Preheat aluminum and polyamide specimens and adhesive to60 C. Apply adhesive and assemble and clamp accordingto 3.2.2,
15、 section 6 (Fig 2).4) Cure according to 3.2.2, section 7.5) Test according to 3.2.2, clause 8.3.2.5.1 Original3.2.5.1.1 Measured at 23 +/-2 C, min 200 N/cm23.2.5.1.2 Measured at 120 +/-2 C, min 100 N/cm2Condition for 30 minutes at 12 0 +/- 2 Cprior to test.3.2.5.1.3 Measured at - 40 +/-1 C, min 200
16、N/cm2Condition for 30 minutes at - 40 +/- 1 Cprior to test.3.2.5.2 After Ageing3.2.5.2.1 Heat Ageing No loss of adhesion14 days at 70 +/- 2 C, 1 hour at 23 +/-2 C.3.2.5.2.2 Resistance to CoolantNo loss of adhesion after 25 cycles.Test according to clause 3.2.4.2,except 25 cycles.3.2.6 QualityThe mat
17、erial shall be of uniform quality, free from foreignmaterial and properties detrimental to normal pr oduction use.3.2.7 Substance ControlLegal, health, safety and environmental constrai nts may applyto the materials which are submitted for approval to thisspecification. Refer to Engineering Material
18、 SpecificationSK-M99P9999-A.ENGINEERING MATERIAL SPECIFICATIONESK-M2G287-A1WP 3948-b Page 5 of 7 3.2.8 SUPPLIERS RESPONSIBILITYAll materials supplied to this specification must beequivalent in all chara cteristics to the material upon whichapproval was originally granted.Pr ior to making any change
19、in the properties, composition,construction, color, processing or labeling of the materialoriginally approved und er this specification, whether or notsuch c hanges affect the materials ability to meet thespecification requirements, the Supplier shall notifyPurchasing, Toxicology and the affected Ma
20、terial s Engineeringactiv ity of the proposed changes and obtain the writtenapproval of the Materials Engineering activity. Test data,test samples and a new code identification are to besubmitted with the request.Substance restrictions imposed by law, regulations or Ford,ap ply to the materials addr
21、essed by this document. Therestrictions are defined in Engineering MaterialsSpecification WSS-M99P9999-A1.4. 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
22、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 aqualified and authorized representative o
23、f 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 will be based on its performance to this
24、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 clarification and assistancein meeting the requirements of this specification.5.1 STORAGE STABILITY(From date of receipt at Ford Motor Company)Minimum 3 months when stored between 5 C to 10 C in unopened drums.ENGINEERING MATERIAL SPECIFICATIONESK-M2G287-A1WP 3948-b Page 6 of 7 ENGINEERING MATERIAL SPECIFICATIONESK-M2G287-A1WP 3948-b Page 7 of 7
