1、 ENGINEERING MATERIAL SPECIFICATIONMaterial Name Specification NumberDate Action Changes1995 03 24 Activated W. Curtiss E. RezendesWP 3948-a Page 1 of 5 SEALER, WINDOW MODULES, WSB-M18P14-APERFORMANCE REQUIREMENTS1. SCOPEThis s pecification defines the sealing requirements for materials used toseal
2、wi ndow modules to painted substrates. The modules must be attachedto the vehicle with mechanical fasteners or a permanent adhesive.2. APPLICATIONThis specification was released originally for sealing of quarter windowmodules from water leaks. The materials covered by this specification arefor seali
3、ng only and not as the primary method of attachment. Performancerequir ements specified shall apply to, but not limited to, the followingtyp es of sealers: foam core tapes, solid elastomeric (typically butyl)tapes, and mechanically foamed materials. This s pecification does not describe individual m
4、aterial properties. Theapplicable matertial specification should be referenced for non-performancecharacteristics.Compl iance with this performance specification does not guarantee these aler will function for all potential applications on a vehicle. Thespecific d esign condition should be evaluated
5、 by a plant trial prior torelease.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 an
6、alyze process/product data sothat variation in the final product is continuously reduced.3.2 CONDITIONING AND TEST CONDITIONSAll 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 to te
7、sting and tested under thesame conditions unless otherwise specified.ENGINEERING MATERIAL SPECIFICATIONWSB-M18P14-AWP 3948-b Page 2 of 5 3.3 ENVIRONMENTAL RESISTANCE No sagging, flowing, en dlifting orloss of adhesionTest Method: Apply two 100 mm lengths of sealer material to a 150 x150 mm PVC and/o
8、r RIM plaque per para 5.1 and 5.2, respectively,(see figure 1 for material placement). The cross-sectional area ofthe seal er shall be specified on the applicable part drawing. Ifnone is specified, use 7 +/- 0.5 mm diameter material. Maintain thepanel in a vertical position and subject it to the exp
9、osures listedbelow. Use one panel per exposure.3.3.1 2 weeks at 90 +/- 2 C3.3.2 Thermal/Humidity Cycling . 4 h at 90 +/- 2 C. 4 h at 38 +/- 2 C and 95 - 100 % relative humidity. 16 h at - 30 +/- 2 C. 4 h at 90 +/- 2 C. 4 h at 38 +/- 2 C and 95 - 100 % relative humidity. 16 h at - 30 +/- 2 C3.3.3 2 w
10、eeks at 38 +/- 2 C and 95 - 100 % relative humidity3.4 PAINT COMPATIBILITY No evidence of migration stain,pinholing, blistering o r softeningof the paint film.Test Method: A 150 mm sealer bead shall be extruded on a 100 x300 mm painted panel as per 5.1.3 and 5.1.4. Expose the assembly toa temperatur
11、e of 90 +/- 2 C for 2 weeks. Remove the tape and examinethe area directly below and adjacent to the contact area.3.5 FOGGING(FLTM BO 116-03)Fog Number, min 60The formation of droplets or coalescence into a clear film is causefor rejection.ENGINEERING MATERIAL SPECIFICATIONWSB-M18P14-AWP 3948-b Page
12、3 of 5 3.6 WATER LEAK RESISTANCEEvidence of water leaks will be cause for rejection.Test Assembly Preparation: A test specimen, 275 mm in length shallbe applied in a “U“ configuration to a 150 x 150 mm RIM and/or PVCplaque per para 5.1 and 5.2, respectively, (see figure 2 for materialplacem ent). Th
13、e cross-sectional area of the sealer shall bespecified on the applic able part drawing. If none is specified, use7 +/- 0.5 mm diameter material. A 100 x 150 mm painted panel perpara 5 .3 and 5.4 shall be placed over the sealer material. Theassem bly shall be compressed 10 % using spacers as a guide.
14、 Thefixtu re must be clamped or bolted to maintain the 10 % compressionthroughout the environmental exposures and test procedure.Expose 2 assemblies to each exposure condition shown below:3.6.1 24 h at 23 +/- 2 C3.6.2 2 weeks at 90 +/- 2 C3.6.3 2 weeks at 38 C and 98 +/- 2 % R. H.3.6.4 Thermal Cycle
15、 (SAE J2100, para 4.8)3.6.5 30 minutes at 120 +/- 2 C (paint repair)3.6.6 2 weeks at - 30 +/- 1 C3.6.7 240 h Salt Spray(ASTM B 117)3.6.8 1 year Florida Exposure3.6.9 2 year Florida ExposureTes t Method: Remove the assemblies from the environmentslisted above and condit ion for a minimum of 4 h but n
16、ot morethan 24 h at 23 +/- 2 C. Stand the assembly on edge with theopening of the “U“ channel up. Fill the channel to a depthof 100 mm (approximately 13 mm from the top edge) withcolored water and let stand for 24 h. Observe for anyevidence of water leaks . Note: Stand the test assembly on asheet of
17、 white paper for easier water leak detection.3.7 FUNCTIONAL APPROVALMaterials being evaluated for approval to this s pecification shall besubject ed to a production trial. Functional trial results must beapproved by the affected assembly operation(s) and DesignEng ineering. Results shall be made ava
18、ilable to MaterialsEngineering prior to material approval and release.ENGINEERING MATERIAL SPECIFICATIONWSB-M18P14-AWP 3948-b Page 4 of 5 3.8 ADDITIONAL REQUIREMENTSSpecific requirements for material and/or manufa ctured parts shall bespecified on the Engineering drawing, Engineerin g parts specific
19、ationand/or performance specifications. All critical areas with respectto these properties shall be clearly designated on the engineeringdrawing.3.9 SUPPLIERS RESPONSIBILITYAll materials supplied to this specification must be equivalent inal l characteristics to the material upon which approval waso
20、riginally 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 affect the materials ability to meet the specificationrequir ements, the Supplier shall
21、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 restrictions imposed by law,
22、regulations or Ford, apply tothe materials addressed by this document. The restrictions aredefined in Engineering Material Specification WSS-M99P9999-A1.4. APPROVAL OF MATERIALSThis specification is intended to define the performance and/or propertiesof finished parts or systems of combined material
23、s. An EngineeringMaterial Approved Source listin g is not applicable for this specification.Produc t Engineering materials referenced in this document and/or theaffected engineering drawing, which require prior Engine ering approval, areshow n in the Engineering Materials Approved Source List under
24、thespecification cited.5. GENERAL INFORMATIONThe information below is provided for clarification and assistance inmeeting the requirements of this specification.5.1 SUBSTRATES5.1.1 ESB-M2D348-A2 RIM (nominal thickness 3 mm) or as specified byMaterials Engineering. The substrates should includenon-in
25、ternal mold release RIM and internal mold release (IMR)RIM.5.1.2 ESB -M4D284-C4 (nominal thickness 3 mm) or as specified byMaterials Engineering.ENGINEERING MATERIAL SPECIFICATIONWSB-M18P14-AWP 3948-b Page 5 of 5 5.1.3 ESB-M33J100 or as specified by Materials Engineering.Enam eled steel panel, primed and enameled per minimumeng ineering specification requirements, steel nominalthickness 0.89 mm.5.1.4 ESB-M33J3 or as specified by Materials Engineeri ng. Enameledsteel panel, primed and enameled per minimum engineeringspecification requireme nts, steel nominal thickness 0.89 mm.
