1、 ENGINEERING MATERIAL SPECIFICATIONMaterial Name Specification NumberDate Release No. Release/Revision1993 06 01 EP00E10258817000 Released B. LangeWP 3948-a Page 1 of 6 TAPE, PRESSURE SENSITIVE, ADHESIVE, ONE SIDED, WSK-M3G217-APOLYETHYLENE, 0.28 mm NOMINAL THICKNESS1. SCOPEThe mate rial defined by
2、this specification is a heat resistant colorlesscl ear polyethylene tape. One side is coated with a pressure sensitiveadhesive and covered with release paper.2. APPLICATIONThis spe cification was released originally for material used to prevent body p aint from abrasion due to vibration of attached
3、bumper and/or brakefluid pipe. The material was a pplied to E-coated, spray primed or paintedsurfaces.Prior to the release for a particular application and in addition to therequ irements specified within thIs specification, full evaluation as acom ponent of specific trim products must be tested by
4、the responsibleComponen t Engineering activity on substrates the intended for use in thefinal application.3. REQUIREMENTS3.1 STATISTICAL PROCESSSupplie rs must conform to the requirements of Ford Quality SystemStand ard Q-101. A mutually acceptable Control Plan as describedtherein is required for ma
5、terial/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 AND/OR THERMAL ANALYSISFord Motor Company, at its option, may conduct infrared and/ortherma l analysis of ma
6、terial/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 material laboratory. All samples sha ll produce IR spectraand thermograms that correspond to the reference s
7、tandard when testedunder the same conditions.ENGINEERING MATERIAL SPECIFICATIONWSK-M3G217-AWP 3948-b Page 2 of 6 3.3 CONDITIONINGAll test values indicated herein are based on ma terial conditioned ina control led atmosphere of 23 +/- 2 C and 50 +/- 5 % relativehumidity for not less than 24 h prior t
8、o testing and tested under thesame conditions unless otherwise specified.3.4 MATERIAL PROPERTIES3.4.1 Color Colorless clear or as s pecified onthe Engineering Drawing3.4.2 Thickness 0.25 - 0.32 mm or as specified on(ASTM D 1000) the Engineering Drawing3.4.3 Width See 5.3 or as specified on theEngine
9、ering Drawing3.4.4 Breaking Strength, min 7500 N/m(ASTM D 1000, Method A)3.4.5 Elongation, min 150 %(ASTM D 1000)3.4.6 Liner Removal, max 20 N/m3.5 PREPARATION OF TEST SPECIMENSSubstrate:Steel panels, painted with current production top coat materialsaccording to respective specifications unless oth
10、erwise specified.Test panels shall be wiped with Isopropanol/wate r (1:1) and dry wipedprior to applying the tape or as recommended by supplier.Bond tape to test panel as specified by the respective test method.The individual top coat surface conditions used shall be mentioned inthe Initial Sample R
11、eport.3.6 AGING CONDITIONSExpos e test specimens to each of the following conditions beforetesting per para 3.7.3.6.1 24 h at 23 +/- 2 C3.6.2 Humidity aging14 d at 38 +/- 2 C, 98 +/- 2 % relative humidityReconditioni ng: 4 h at 23 +/- 2 C and 50 +/- 5 % relativehumidityENGINEERING MATERIAL SPECIFICA
12、TIONWSK-M3G217-AWP 3948-b Page 3 of 6 3.6.3 Heat Aging14 d at 80 +/- 2 C;Reconditioni ng: 4 h at 23 +/- 2 C and 50 +/- 5 % relativehumidity3.6.4 Paint Repair Oven30 minutes at 120 +/- 2 C;Reconditioni ng: 4 h at 23 +/- 2 C and 50 +/- 5 % relativehumidity3.6.5 Environmental Cycling(FLTM BQ 104-07, Pr
13、ocedure 5) Reconditioni ng: 4 h at 23 +/- 2 C and 50 +/- 5 % relativehumidity3.7 ADHESION PROPERTIES3.7.1 Peel Adhesion(ASTM D 1000, clause 40 - 42)Aged per 3.6.1, min 200 N/mAged per 3.6.2, min 320 N/mAged per 3.6.3, min No loss of adhesion based onAged per 3.6.4, min measured value according to pa
14、raAged per 3.6.5, min 3.6.13.7.2 Shear Adhesion, min 30 N/cm2(FLTM BU 151-01, Method A, Fig. 2)24 h after bonding.Prior to testing, protect reverse side of the tape with apolyester or aluminum foil of about 50 micrometre thicknessto avoid elongation during testing.3.8 SOFTENING POINT, min 100 C(ASTM
15、 D 816, except prepare test specimens according to para 3.5)Maint ain oven temperature at 50 C for 15 minutes and then increase2.5 C/5 minutes until bond failure.3.9 ABRASION RESISTANCE No abrasionthroughout thetapeTest Method:1) Prepare test panels according to the current production E-coat andcure
16、 according to the respective material specification.ENGINEERING MATERIAL SPECIFICATIONWSK-M3G217-AWP 3948-b Page 4 of 6 2) Bond tape to the test panels. The mating surfaces must be pressedfirmly together to force out trapped air and ensure a good bond.3a) Test and examine after 24 h at 23 +/- 2 C fo
17、 r abrasion resistanceusing TABER ABRASER, according to ASTM D 1044, weights 500 g each,wheels CS10, 800 cycles.3b) Test and examine after 24 h at 23 +/- 2 C fo r abrasion resistanceusing CROCKMETER, details TBD3.10 RESISTANCE TO BRAKE FLUID No deleteriouseffectTest Method: Test specimens prepared p
18、er para 3.9, immersed for 5minutes in production initial fill brake fluid (see para 5.4).3.11 RESISTANCE TO GREASE No deleteriouseffectTest Method: Test specimens prepared per para 3.9, immersed for 5minutes in production used bearing grease (see para 5.4).3.12 THERMAL SHOCK RESISTANCE No breaks,cra
19、cks or otherfailuresTest Method: Maintain test specimens prepared per para 3.9 at - 40+/- 2 C for 16 h. Then immediately immerse specimens in water at 70+/- 2 C for 5 minutes.Evaluate after conditioning at 23 +/- 2 C and 50 +/- 5 % relativehumidity for 4 h.3.13 FLAMMABILITY(ISO 3795/SAE J369)Burn Ra
20、te, max 100 mm/minutePer form the test after adhering the adhesive side of the tape to asteel panel.3.14 SUPPLIERS RESPONSIBILITYAll materials supplied to this specification must be equivalent inal l characteristics to the material upon which approval wasoriginally granted.ENGINEERING MATERIAL SPECI
21、FICATIONWSK-M3G217-AWP 3948-b Page 5 of 6 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 eme
22、nts, 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 restr
23、ictions imposed by law, regulations or Ford, apply tothe materials addressed by this document. The restrictions aredefined in Engineering Material Specification WSS-M99P9999-A1.4. APPROVAL OF MATERIALSMat erials defined by this specification must have prior approval by theresponsible Materials Engin
24、eeri ng activity. Suppliers desiring approval ofthe ir 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 labora
25、tory 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 engin
26、eering 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 below i
27、s provided for clarification and assistance inmeeting the requirements of this specification.5.1 STORAGE STABILITY 12 months(From date of receipt at Ford Motor Company)5.2 STORAGE TEMPERATURE 10 C to 28 C5.3 WIDTH OF TAPE - SECOND SUFFIXThe width of tape shall be identified by an additional suffix t
28、o thespecifi cation number as follows, or shall be as specified on theEngineering Drawing:Suffix for . width10 10 mm12 12 mm15 15 mm20 20 mmENGINEERING MATERIAL SPECIFICATIONWSK-M3G217-AWP 3948-b Page 6 of 6 5.4 For information on current production materials used in para 3.10 and3.11 of this specif
29、ication contact:Materials Laboratory 13/100 Fluids Materials SectionResearch & Engineering Centre Coolants/GreasesFord Motor Company Ltd. Engine EngineeringLaindon, Basildon P.O. Box 2053Essex SS15 6EE, England 21500 Oakwood Blvd.Dearborn, MI 48121 U.S.A.Materials EngineeringProduct Engineering OfficeFord Moitor Co. of Australia Ltd.Princes Highway, NorlaneVictoria 3214, Australia
