1、 ENGINEERING MATERIAL SPECIFICATIONMaterial Name Specification NumberDate Action Changes1996 06 04 Activated W. ScholzWP 3948-a Page 1 of 5 SEALER, BUTYL RUBBER, SOLVENT FREE WSS-M4G261-B31. SCOPEThe material defined by this specification is a solvent free, hotappl icable (140 +/- 2 C) butyl rubber
2、sealer with polyisobutyleneplasticizer.2. APPLICATIONThis specification is released originally for material u sed for bonding andsealing of water shield to door inner panel.3. REQUIREMENTS3.1 QUALITY SYSTEM REQUIREMENTSMaterial suppliers and part producers must conform to Quality SystemRequirements,
3、 QS-9000. Material specification r equirements are to beused fo r initial qualification of materials. A Control Plan forong oing production verification is required. This plan must bereviewed and approved b y the relevant Ford Materials activity and/orFor d Supplier Technical Assistance (STA) prior
4、to production partssubmission. Appropriate statistical tools must be used to analyzepr ocess/product data and assure consistent processing of thematerials.Part producers using this material in their products, must use Fordapproved materials and must conform to a process control plan whichhas been ap
5、proved by STA and/or the relevant Materials Activity.3.2 INFRARED SPECTROPHOTOMETRY AND/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
6、 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 standard when testedunder the same conditions.3.3 CONDITIONING AND TEST CONDITIONSAll test values indicated h
7、erein 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 to testing and tested under thesame conditions unless otherwise specified.ENGINEERING MATERIAL SPECIFICATIONWSS-M4G261-B3WP 3948-b Page 2 of 5 3.4 COLOR Blac
8、k3.5 SOLIDS, min 98 %(FLTM BV 150-10)3.6 ASH, max 20 %(FLTM BV 150-10)3.7 WEIGHT PER VOLUME AT 23 C 1.1 +/- 0.1 kg/1(ASTM D 1475)3.8 CONE PENETRATION AT 23 C(Penetration according to ASTM D 5, 1.5 N total load mass, 5 s dwelltime, data in 0.1 mm)3.8.1 As Received3.8.1.1 At 23 +/- 2 C 58 +/- 83.8.1.2
9、 At - 30 +/- 2 C 20 +/- 83.8.1.3 At 60 +/- 2 C 100 +/- 153.8.2 After Aging, max 25 % loss based(14 days at 80 +/- 2 C) on the valueobtained in para3.8.1.13.9 FLOW RATE No flow(FLTM BV 153-01, Method A, except 30 minutesat 120 +/- 2 C or current repair oventemperature)3.10 COLD FLEXIBILITY AFTER AGIN
10、G No loss ofadhesion, chippingor crackingTest Method:1. Apply a 250 x 30 x 3 mm ribbon of material under test, heated to140 +/- 2 C, centrally to 300 x 100 mm test panels preparedaccording to FLTM BI 103-02, Method Bb.2. Expose test assemblies in a mechanically convected air-dryingoven at 80 +/- 2 C
11、 for 14 days.3. Afte r cooling to 23 +/- 2 C expose test assemblies and bendingfixture (see FLTM BV 153-04, except 50 mm mandrel) in a cold boxat minus 30 +/- 2 C for 4 h.4. Wh ile still in the cold box bend test assemblies within 2 saround a 50 mm diameter through an angle of 90 degrees.3.11 SHEAR
12、ADHESION3.11.1 At 23 +/- 2 C, min 45 kPaENGINEERING MATERIAL SPECIFICATIONWSS-M4G261-B3WP 3948-b Page 3 of 5 3.11.2 At - 30 +/- 2 C* No loss ofadhesion based onthe value obtainedin para 3.11.13.11.3 At 60 +/- 2 C* 25 kPaTest Method:1. Pre pare 25 x 125 mm test panels of current productionenamel acco
13、rding to FLTM BI 103-02, Method Bb.2. Bond specimens according to Figure 1 with sample materialheated to 140 +/- 2 C.3. Test shear adhesion at a rate of pull of 25 mm/minute andcalculate in kPa.*30 minutes conditioning time3.12 PEEL ADHESION, min 5.5 N/cm(FLTM BU 151-1, Method B1, y = 1 mm, exceptap
14、ply sealer of a temperature of 140 +/- 2 Cto test panel and cover with PVC sheeting(SK-M2F9504-A)3.13 COMPRESSION LOAD 300 - 600 N(FLTM BU 114-1, thickness 6 mm, width 8 mm)3.14 RESISTANCE TO DEWAXING COMPOUND U-MB 005-800 No leaksTest Method:1. Prepare 150 x 300 mm test panels according to FLTM BI
15、103-02,Method Bb.2. Apply sealer of a temperature of 140 +/- 2 C to test panels in a3 mm bead as shown in Figure 2 and cover with PVC sheetingaccording to SK-M2F9504-A.3. Press down sealer bead to a thickness of approximately 1 mm.4. After 2 h at 23 +/- 2 C fill assembly with 10 ml dewaxingcompound
16、and suspend in vertical posi tion for 24 h at 23 +/- 2 C.3.15 HEAT AGINGSpecimens prepared according to para 3.10 shall show no evidence ofblistering after exposu re in a mechanical convection oven maintainedat 80 +/- 2 C for 2 weeks. Evaluation after 1 h at 23 +/- 2 C.3.16 STORAGE STABILITY, min 6
17、months(From date of receipt at Ford Motor Company)When stored in sealed unopened containers out of direct sunlight atambient temperatures between 5 C and 32 C.ENGINEERING MATERIAL SPECIFICATIONWSS-M4G261-B3WP 3948-b Page 4 of 5 3.17 SUPPLIERS RESPONSIBILITYAll materials supplied to this specificatio
18、n 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 uction, color, processing or labeling of the materialorig inally approved under this specification, whether or not suchchange s affe
19、ct the materials ability to meet the specificationrequir ements, 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 identi
20、fication areto be submitted with the request.Substance restrictions imposed by law, regulations 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 specificati
21、on must have prior approval by theresponsible Materials Engineeri 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 M
22、aterials Engineeringactivity a completed copy of their laboratory 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 cod
23、e 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 suitability for intended processes and/or applications. Uponapprov al, the material will be added to the Engineering Material ApprovedSource List.PVC SheetingSealer10 ml Dewaxing Compound7mm70 mmEnameled PanelFigure 1Figure 2Test panels according to FLTM BV154-03Material under test, 1 mm thickTest DirectionBonding Area 25 x 20 mmENGINEERING MATERIAL SPECIFICATIONWSS-M4G261-B3WP 3948-b Page 5 of 5
