1、 ENGINEERING MATERIAL SPECIFICATIONMaterial Name Specification NumberDate Release No. Released1994 12 07 Revised and Retyped, was 23 pages1985 11 15 B/001 684 TP 3.5.1; 3.11.1; 3.11.4; 3.12; 3.14; 3.21; 3.221984 02 16 SM/EQ 5435 TP ReleasedWP 3948-a Page 1 of 13 TAPE, ADHESIVE, TWO SIDE, ACRYLIC FOA
2、M, EXTERIOR ESK-M3G136-A1. SCOPEThe material defined by this sp ecification is a pressure sensitive acrylicfoam tap e with one side protected with a release paper or film, unlessotherwise specified.ESK-M3G136-A Two side pressure sensitiveESK-M3G136-A2 One side pressure sensitive, the other side heat
3、acitivativeESK-M3G136-A3 As “A2“ aboveESK-M3G136-A4 As “A2“ above2. APPLICATIONThese specifications were relea sed originally for adhesive tapes to retainexterior bodyside moldings and rubber parts to enameled surfaces. The heatac tivative side of ESK-M3G136-A2 and -A4 is preferably bonded topolych
4、loroprene rubber and that of ESK-M3G136-A3 to EPDM rubber moldings.The pressure sensitive side is preferably used on the following paintedsurfaces:ESK-M3G136-A Solid colors and metallics(basecoat/clearcoat)ESK-M3G136-A2 Solid colorsESK-M3G136-A3 Solid colorsESK-M3G136-A4 Solid colors and metallics(b
5、asecoat/clearcoat)Prior to the release for a particular application and in addition to therequir ements specified herein, full evaluation as a component of specifictrim pro ducts must be ensured by the affected Component Engineeringactivity.ENGINEERING MATERIAL SPECIFICATIONESK-M3G136-AWP 3948-b Pag
6、e 2 of 13 3. REQUIREMENTSNot e: The material shall be conditioned for a minimum of 24 h in acontr olled atmosphere of 23 +/- 2 C and 50 +/- % relative humidity priorto testing and tested under the same controlled conditions.Solid co lors and metallic colors and clearcoat shall be used for theprepa r
7、ation of test panels according to FLTM EU-BI 3-2, Method C, forESK-M3G 136-A and -A4. For ESK-M3G136-A2 and -A3 only solid colors shallbe used.3.1 COLOR Wh ite or as specified onEngineering drawing3.2 THICKNESS (without liner) 1.14 +/- 0.15 mm(ASTM D 1000)3.3 DENSITY at 20 C 500 - 900 kg/m3(ASTM D 1
8、564, Suffix W)3.4 TENSILE STRENGTH(ASTM D 412 Die C)3.4.1 Original, min 70 N/cm23.4.2 After Ageing, min 70 N/cm2(70 h at 100 +/- 2 C)3.4.3 After Water Immersion, max - 25 %(1 h in distilled water of 23 +/- 2 C)The specimens are to be tested immediately after removal fromwater i mmersion. They may be
9、 lightly blotted but notsqueezed dry.3.5 ELONGATION(ASTM D 412, Die C)3.5.1 Original, minESK-M3G136-A 450 %ESK-M3G136-A2, -A3, -A4 180 %3.5.2 After Ageing, max - 25 %(70 h at 100 +/- 2 C)3.5.3 After Water Immersion, max - 25 %(For test method see 3.4.3)ENGINEERING MATERIAL SPECIFICATIONESK-M3G136-AW
10、P 3948-b Page 3 of 13 3.6 TEAR STRENGTH(ASTM D 624, Die B)3.6.1 Original, min 40 N/cm3.6.2 After Ageing, max - 25 %(70 h at 100 +/- 2 C)3.6.3 After Water Immersion, max - 25 %(For test method see 3.4.3)3.7 LOW TEMPERATURE FLEXIBILITY No cracking(FLTM EU-BN 2-1, except 500 mm dia.mandrel and - 30 +/-
11、 1 C, bend specimenthrough an angle of 180 deg within 10 s)3.8 WATER ABSORPTION, max 3 %(ASTM D 1056, 24 h, normal pressure)3.9 MIGRATION STAINING NoneTest Method: Apply the tape to a freshly white or light blue paintedpanel (FLTM EU-BI 3-2) and expose for 200 hours in the FluorescentSunlamp Cabinet
12、 (see FLTM EU-BU 52-2).3.10 TENSILE STRENGTH, min (ESK-3G136-A) 48 N/cm2Test Method: Carefully bond the mating surfaces of two test blocks(see Fig 1) together and press down firmly to force out trapped airto ensure a good bond. Immediately after bonding clamp both ends inthe jaws of a tensile tester
13、 and determine the t ensile force requiredto separate the blocks. Rate of pull 300 mm/minute.3.11 SHEAR ADHESION3.11.1 Original, min 50 N/cm2(14 d at 70 +/- 2 C)3.11.2 After Heat Ageing No loss of adhesion(14 d at 70 +/- 2 C)3.11.3 After Humidity Ageing No loss of adhesion(14 d at 38 +/- 1 C and 98
14、+/- 2 %relative humidity)3.11.4 After Environmental Cycling No loss of adhesion(10 cycles, with one cycle consistingof 4 h at -40 +/- 1 C, 4 h at 80 +/-2 C and 16 h at 38 +/- 1 C and98 +/- 2 % relative humidity)ENGINEERING MATERIAL SPECIFICATIONESK-M3G136-AWP 3948-b Page 4 of 13 Test Method (ESK-M3G
15、136-A): Carefully bond the matingsurfac es of two test blocks (see Fig 2) together and pressdown firmly to force out trapped air to ensure a good bond.After 24 hours conditioning at room temperature, expose thetest specimens to above environments. Four hours aftercompl etion of exposure, measure the
16、 shear strength in atensile tester at a jaw separation rate of 25 mm/minute.Test Method (ESK-M3G136 -A2, -A3, -A4): As abov e, except usespecimens according to Fig 4.3.12 PEEL ADHESION, min 14 N/cm width; or cohes ion failureof adhesive tape.Test Method: ASTM D 1000, except apply an approx 0.025 mmp
17、olyester film or suitable equivalent to the unl ined adhesiveside of the tape before testing and determine ad hesion at 180deg to anodized aluminu m, polished stainless steel, chromiumplating and production quality enameled steel one hour afterbonding.a) 1 h after bonding andb) 14 d at 70 C, 1 h at
18、room temperature after bondingNote : Test values must be determined on both the roll andliner side of the tape.Test M ethod (ESK-M3G136-A2, A3, A4): As above except usetest specimens according to Fig 6.3.13 HOLDING POWER3.13.1 At Room Temperature, min 100 h3.13.2 At 70 +/- 2 C, min 100 hTe st Method
19、: Carefully bond the mating surfaces of twospecim ens each (see Fig 2 and 4) together and press downfirmly to force our trapped air to ensure a good bond.Cond ition for 24 hours at room temperature. Suspend onespecime n at room temperature and the other at 70 +/- 2 C.Gently attach a 10 N force to th
20、e lower end of e ach specimen.All bonded assemblies must support this force wi thout failurefor the time specified above.ENGINEERING MATERIAL SPECIFICATIONESK-M3G136-AWP 3948-b Page 5 of 13 3.14 ENVIRONMENTAL RESISTANCE No loss of adhesionTest Method:1) Bond to enameled panels, standard test pieces
21、or sections fromproduction moldings using. ESK-M3G136-A (Fig 3) and. ESK-M3G136-A2, -A3, -A4 (Fig 5)and co ndition for 72 hours at room temperature. The matingsurfaces must be pressed down firmly to force out trapped air toensure a good bond.2) Expose test assembly four times to a cycle as follows:1
22、6 h at 38 +/- 2 C and 98 +/- 2 % relative humidity4 h at - 40 +/- 1 C4 h at 80 +/- 2 CMo unt the panel in the slamming test fixture (see FLTM EU-BV 51-1, Load A ) so that the bonded parts face outward and areat the bottom of the test fixture. Allow the panel to fall froma horizontal position 10 time
23、s in rapid su ccession. Remove panelfrom slamming fixture and condition for 2 hours at roomtemperature.3) Examine for evidence of loss of adhesion.3.15 THERMAL SHOCK RESISTANCE No loss of adhesionTest Method: Condition bonded assemblies prepared according to 3.14for 72 hours at room te mperature and
24、 subject to the following cycle.a) 4 h water immersion at 23 +/- 2 Cb) 4 h at - 40 +/- 1 Cc) direct steam blast 50 - 70 mm from each part for 15 secondsminimu m, using a steam generator as described in FLTM EU-BI 7-3 or equivalent.3.16 PETROL RESISTANCE, min 30 N/cm2Test M ethod: Prepare test specim
25、ens according to 3.13.2 andcondition for 24 hours at room temperature. Immerse test specimensin Fuel B according to ASTM D 471 for one hour. Allow to dry for5 minutes at room temperature and determine shear strength in atensile tester at a jaw separation rate of 25 mm/minute.ENGINEERING MATERIAL SPE
26、CIFICATIONESK-M3G136-AWP 3948-b Page 6 of 13 3.17 RESISTANCE TO DEWAXING COMPOUNDS, min 30 N/cm2Test M ethod: Prepare test specimens according to 3.13.2 andcondition for 24 hours at room temperature. Immerse for 1 minute inU-MG 00 9-021 protective wax compound. Remove wax coating after72 hour s by s
27、ponging with a plentiful quantity of dewaxing fluidU-MB 005-8000. After 5 to 10 minutes immerse in fresh dewaxing fluidfor 1 minute and rinse with 30 - 40 C warm tap w ater. After 16 hoursat room temperature determine shear strength in a tensile tester ata rate of pull of 25 mm/minute.3.18 HEAT RESI
28、STANCE No displacementTest M ethod: Prepare test specimens according to 3.13.2 andcon dition for 2 hours at room temperature. Gently attach a 2.25 Nforce to the lower end of the test specimens and suspend in a forcedventilated drying oven maintained at 120 +/- 2 C for 30 minutes.Allow specimens to c
29、ool to room temperature and examine whether anydisplacement from the original bonded position has occurred.3.19 SOFTENING POINTAt 2.25 N applied force, min 120 CTest Method: ASTM D 816 except use test specime ns per clause 3.13.2.Maintain oven temperature at 50 C for 15 minutes and then increase by2
30、.5 C/5 minute until bond failure.3.20 LINER REMOVAL 0.25 - 5.00 N/cm width(ASTM D 1000 except apply the unlinedadhesive side of the tape to a clean metalpanel (or use a section of a production part)and measure the force required to peel theliner from the tape)3.21 BREAKAWAY/CONTINUOUS PEEL N/12.7 mm
31、 width(FLTM BN 113-08; For tests according toESK-M3G136-A2, -A3, -A4 the supplier isrequired to provide, together with the Initial Sample Report, specimens of same material and equivalent manufacture used for the finished part)3.21.1 Original, min 110/30(1 h at 23 +/- 2 C after bonding)3.21.2 Heat A
32、ged, min 155/40(7 d at 70 +/- 2 C, 1 h at 23 +/- 2 C)3.21.3 Condensing Humidity, min 100/35(3 d at 23 +/- 2 C, 7 d at 38 +/- 2 Cand 98 +/- 2 % relative humidity)ENGINEERING MATERIAL SPECIFICATIONESK-M3G136-AWP 3948-b Page 7 of 13 3.21.4 Fuel B Immersion, min 100/35(3 d at 23 +/- 2 C, 1 h immersion i
33、nFuel B according to ASTM D 471 at23 +/- 2 C)3.21.5 Diesel Immersion, min 100/35(3 d at 23 +/- 2 C, 1 h immersion inDiesel Fuel at 23 +/- 2 C)3.22 SUBSTANCE CONTROLLegal, health, safety a nd environmental constraints may apply to themate rials which are submitted for approval to this specification.R
34、efer to Engineering Material Specification WSS-M99P9999-A2.3.23 SUPPLIERS 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 u
35、ction, 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 Purchasing, Toxicology andthe affected Materials Engineering activity of the p
36、roposed 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, regulations or Ford, apply tothe materials addressed by this document. The restrictio
37、ns 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 desiring approvalof thei r materials shall first obtain an expression of interes
38、t 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 of the test faci lity, demonstratingfu
39、l 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 specification and on anassessment of
40、suitability for intended processes and/or applications. Uponapprov al, the material will be added to the Engineering Material ApprovedSource List.ENGINEERING MATERIAL SPECIFICATIONESK-M3G136-AWP 3948-b Page 8 of 13 5. GENERAL INFORMATIONThe information given below is provided for clarification and a
41、ssistancein meeting the requirements of this specification.5.1 STORAGE STABILITY(From date of receipt at Ford Motor Company)Minimu m 12 months when stored at temperatures below 30 C. Thereleas e liner shall remove easily when measured by hand peelexamination and shall n ot change appreciably after 1
42、2 months storagebelow 30 C. (To be cert ified by supplier on “Initial Sample Report“)5.2 APPLICATION CRITERIA. Only apply tape to absolutely clean and dry surface. Mating surface should be matched (contoured or parallel ) to ensure100 % contact of the bond area. Once tap e is applied to part e.g. or
43、nament or body side moldingand h as been bonded, and for any reason removed, it shall not bereused. If the ad hesive surface of the tape becomes soiled, the tape-backed part shall not be used unless tape is replaced. The adhesive side of the tape shall not be touched or handled,once the release line
44、r has been removed.ENGINEERING MATERIAL SPECIFICATIONESK-M3G136-AWP 3948-b Page 9 of 13 ENGINEERING MATERIAL SPECIFICATIONESK-M3G136-AWP 3948-b Page 10 of 13 ENGINEERING MATERIAL SPECIFICATIONESK-M3G136-AWP 3948-b Page 11 of 13 ENGINEERING MATERIAL SPECIFICATIONESK-M3G136-AWP 3948-b Page 12 of 13 ENGINEERING MATERIAL SPECIFICATIONESK-M3G136-AWP 3948-b Page 13 of 13
