1、 ENGINEERING MATERIAL SPECIFICATIONMaterial Name Specification NumberDate Action Changes1995 03 28 Revised Para 21994 05 17 NB00E10436178000 Released E.R. Rezendes N.E. LindsayWP 3948-a Page 1 of 7 SEALER, PRESSURE SENSITIVE, RUBBER/RESIN/ASPHALT, WSB-M4G109-A2ONE SIDE, POLYETHYLENE SHEET1. SCOPEThe
2、 mate rial defined by this specification is a pressure sensitive,ru bber/resin/asphalt composition sealer which is extruded in flat sheetsand backed with a polyethylene sheet.2. APPLICATIONThi s specification was released originally for material used as soundinsulators on painted metal bod y opening
3、s. This material is applied aftertopcoat on the trim line. The backing film facilitates application formore effective sealing.Note: Material defined by WSB- M4G109-A2 replaces the former ESB-M4G109-A.Existi ng drawings specifying ESB-M4G109-A do not require revision toreflect this new classification
4、.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 material/source approval. Appropriatestatist ical tools must be used to analyze process/product data sothat
5、 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 material/parts supplied to this specification.The IR spectra and thermograms established for i nitial appro
6、val 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 indicate
7、d 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 to testing and tested under thesame conditions unless otherwise specified.ENGINEERING MATERIAL SPECIFICATIONWSB-M4G109-A2WP 3948-b Page 2 of 7 3.4 DIMENSI
8、ONS As specified on engineeringdrawings3.5 BACKING FILMThe material properties of the backing film shall not vary from theoriginal ly approved production sample. Refer to para 5.3 foradditional information.3.6 SOLIDS, min 99 %(ASTM D 2834, except heat at 100 +/-2 C for 3 h in a mechanical convection
9、oven)3.7 WEIGHT PER VOLUME(ASTM D 816)The weig ht tolerance for any one supplier shall be +/- 0.04 kg/L,based on the recorded weight of the originally approval productionsample. Refer to para 5.4 for additional information.3.8 NEEDLE PENETRATION 7 - 12 mm(ASTM D 1321, 150 g total load)3.9 PEEL ADHES
10、ION, min 20 kPa(180 deg peel)Test sp ecimens exposed to the following conditions shall meet theabove minimum requirement or demonstrate cohesive failure of thesealer material. Backing film shall not delaminate after exposure.3.9.1 Original - 1 h after bonding3.9.2 Original - 24 h after bonding3.9.3
11、14 days at 90 +/- 2 C3.9.4 14 days at 38 +/- 2 C and 95-100 % RH3.9.5 2 cycles:. 4 h at 90 +/- 2 C. 4 h at 38 +/- 2 C and 95 - 100 % RH. 16 h at - 30 +/- 2 C. 4 h at 38 +/- 2 C and 95 - 100 % RH. 4 h at 90 +/- 2 C. 16 h at - 30 +/- 2 CENGINEERING MATERIAL SPECIFICATIONWSB-M4G109-A2WP 3948-b Page 3 o
12、f 7 Test Method: Place a 1 2 x 300 mm wide strip of masking tapeon the l ong edge of two 300 x 100 mm panels for eachsubstrate prepared per para 5.1. Apply three 25 x 300 x 2.3mm strips of sealer on each panel perpendicular to themasking tape (see Figure 1) and pass a 2.2 kg ro ller over thepanel as
13、sembly per ASTM D 1000. condition the assembly 1 hat 23 +/- 2 C prior to and after exposure. Peel each sealerstrip at 180 degrees at a rate of 305 mm/minute in a tensiletesting machine. Record and report the average peel adhesionvalue for each of the six strips.3.10 COLD ADHESION No cracking, adhesi
14、on failure, loss(FLTM BU 109-02) of material, or delamination ofbacking film.Test Method: Place a 76 x 76 x 2.3 mm sample on a 300 x 100 mmelectrocoated panel prepared per para 5.1. Pass a 2.2 kg roller overthe panel ass embly per ASTM D 1000. Condition the panel 1 h at 23+/- 2 C. Condition sample f
15、or 4 h min at - 30 + /- 2 C. Test at - 30+/- 2 C.3.11 FLEXIBILITY No crackingTest Method: Condition an “as received“ 75 x 76 x 2.3 mm sample onrelease pap er at - 30 +/- 1 C for 16 h. Bend 180 degrees around atemperature conditioned 25 mm diameter mandrel. Repeat on a sampleaged for 24 h at 100 +/-
16、2 C.3.12 CORROSION RESISTANCE, min 500 h (ASTM B 117)No loss of adhesion or blistering of the material and no evidence ofcorrosion on the metal surface when subjected to salt spray. Nodelamination of the backing film.Test Method: Apply two 25 x 300 x 2.3 mm strips of sealer toelectroc oated panels p
17、repared per para 5.1. Pass a 2.2 kg rollerover the panel per ASTM D 1000. Condition the panel 1 h at 23 +/- 2C. Subject to salt spray exposure.3.13 PAINT STAINING No migration stain(SAE J2020, 500 h, white and lightcolored metallic enameled panels)3.14 CLEANABILITY Shall be easily removed.Test Metho
18、d: Prepare enameled panels as describ ed in FLTM BI 103-02,Method “C“, using currently released white produ ction paint. Age theenameled panels for 16 h at 38 +/- 1 C. Apply a 76 x 76 x 2.3 mmsamp le of sealer with finger pressure to the enamel panels.Condition for 1 h at 23 +/- 2 C. Remove the seal
19、er sample and wipepanels with mineral spirits (e.g. naphtha).ENGINEERING MATERIAL SPECIFICATIONWSB-M4G109-A2WP 3948-b Page 4 of 7 3.15 FLAMMABILITY(ISO 3795/SAE J369)Burn Rate, max 100 mm/minute3.16 FOGGING(FLTM BO 116-03)Fog Number, min 60The formation of droplets or coalescence into a clear film i
20、s causefor rejection.3.17 WATER ABSORPTION, max 5 %(FLTM BV 117-01, Method A, 8 h soak time)3.18 SAG RESISTANCE3.18.1 Horizontal, max 3 mm3.18.2 Vertical, max 3 mm3.18.3 Inverted No loss of materialTest Method: Apply a 5 0 x 50 x 2.5 mm bead along the centerline o f three panels for each substrate p
21、repared per para5.1. Sc ribe panels to mark the initial material location.Condition the panels with the material in the aboveorien tations for 1 h at 23 +/- 2 C. Immediately afterconditioning, place pan els in a mechanical oven at 150 +/- 2C for 30 minutes maintaining panel orientation d uring bakin
22、g.Co ndition panel at 23 +/- 2 C for 1 h maintaining panelori entation. Determine the sag by measuring the materialmovement below the scribe mark.3.19 ELONGATION3.19.1 As Received, max 10 %3.19.2 Aged at 70 +/- 2 C for 24 h, max 15 %Test Method: Remove a 25 x 300 x 1.5 mm sample of sealerfrom i ts b
23、aking paper at a speed to simulate the backingpaper removal in an assembly plant. Measure the length ofthe sealer sample initially and after removal fr om the bakingpaper.% elongation = L2 - L1_ x 100L1L1 = Initial LengthL2 = Final LengthENGINEERING MATERIAL SPECIFICATIONWSB-M4G109-A2WP 3948-b Page
24、5 of 7 3.20 ODORNo ob jectionable or irritating odors, both as received and afterstorage.3.21 STORAGE STABILITYThe material shall be stored at temperatures bel ow 38 C away from allsources of heat and sunlight. Under these storage conditions, theshelf life o f the material shall be 3 months. There s
25、hall be nodif ficulty in removing the material from its backing paper whenstored under these conditions. When these materials are stored atte mperatures below 23 C, they shall be conditioned at roomtemperature prior to ap plication. Adequate conditioning permits thematerial to obtain its optimum app
26、lication properties.3.22 FUNCTIONAL APPROVALMaterials being evaluated for initial approval to the specificationshall be subjected to a production trial. Functional trial resultsshoul d be available to Design and Materials Engineering prior tomaterial approval and release.3.23 ADDITIONAL REQUIREMENTS
27、Specific requirements for material and/or manufa ctured parts shall bespecified on the Engineering drawing, Engineerin g parts specificationand/or performance specifications. All critical areas with respectto these properties shall be clearly designated on the engineeringdrawing.3.24 SUPPLIERS RESPO
28、NSIBILITYAll 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 uction, color, processing or labeling of the materialorig inally approved under
29、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 proposed changesand obtain the written approval of the Materials Engineeringacti
30、vity. 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 restrictions aredefined in Engineering Material Specification WSS-M99P9999-A1.ENGINEERING
31、 MATERIAL SPECIFICATIONWSB-M4G109-A2WP 3948-b Page 6 of 7 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 interest from thea
32、ffec 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, demonstratingful l complia
33、nce 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 suitability
34、 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 SUBSTRATESNominal
35、 panel dimensions are 100 x 300 x 0.8 mm.Electr ocoat Primed Steel Panel: Current production steel panelprepared per ESB-M2P4 performance specification, using currentpr oduction paints as identified by the Materials EngineeringActivity.Enamele d Steel Panel: Current production steel panel, primed an
36、denameled per minimum en gineering specification requirements preparedper ESB-M33J100 or as identified by the Materials EngineeringActivity.Enamele d Steel Panel: Current production steel panel, primed andenameled per minimum en gineering specification requirements preparedper ESB-M33J3 or as identified by the Materials Engineering Activity.5.2 COLOR Black or as specified on theengineering drawing5.3 BACKING FILMMaterial Black or clear polyethyleneThickness 0.076 mm5.4 WEIGHT PER VOLUME 1.80 +/- 0.04 kg/L(ASTM D 816)ENGINEERING MATERIAL SPECIFICATIONWSB-M4G109-A2WP 3948-b Page 7 of 7 FIGURE 1
