1、 ENGINEERING MATERIAL SPECIFICATIONMaterial Name Specification NumberDate Release No. Released1995 03 01 NB00E10451827000 Released D. DiGregorio G. MolnarWP 3948-a Page 1 of 5 SEALING REQUIREMENTS, ANTI-FLUTTER FOR WSB-M18P16-AISOLATION OF FRP/FRP PANELS1. SCOPEThi s specification defines the perfor
2、mance requirements for a pumpable,expanding anti-flutter material.2. APPLICATIONThis specification was originally released for sealers used to isolateinner fr om outer FRP panels. Anti-flutter materials are required toperfo rm in a number of applications and closure designs. Each designand/or applic
3、ation has unique requirements. Selection of the appropriatematerial should therefore be ba sed on a jury evaluation (i.e. NVH) as wellas the required functional trial.3. REQUIREMENTS3.1 STATISTICAL PROCESSSupplie rs must conform to the requirements of Ford Quality SystemStand ard Q-101. A mutually a
4、cceptable Control Plan as describedtherein is required for material/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/THERMAL ANALYSISFord Motor Company, at its opti
5、on, may conduct infrared and/ortherma l analysis of material/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 spe
6、ctraand thermograms that correspond to the reference standard when testedunder the same conditions.ENGINEERING MATERIAL SPECIFICATIONWSB-M18P16-AWP 3948-b Page 2 of 5 3.3 CONDITIONING AND TEST CONDITIONSAll test values indicated herein are based on ma terial conditioned ina control led atmosphere of
7、 23 +/- 2 C and 50 +/- 5 % relativehumidity for not less than 24 h prior to testing and tested under thesame conditions unless otherwise specified.3.4 CROSS LAP ADHESION, min(FLTM BV101-04)Bondline thickness after cure of 1.0 mm,substrates per para 5.5, materialcure schedules per para 5.4)3.4.1 Norm
8、al at 23 +/- 2 C 240 kPa3.4.2 14 days heat age at 90 +/- 2 C 300 kPa3.4.3 14 days humidity at 38 +/- 2 C and 300 kPa98 +/- 2 % RH3.4.4 14 days water immersion at 23 +/- 2 C 300 kPa3.4.5 500 hr salt spray described per 240 kPaASTM B 1173.4.6 10 thermal cycles 300 kPa16 hr at 38 +/- 2 C and 98 +/- 2 %
9、 RH4 hr at -40 +/- 1 C4 hr at 90 +/- 1 C3.5 VOLUME EXPANSION 75 - 125 %(FLTM BV 108-02)Substrates per para 5.5, materialcure schedules per para 5.4)3.6 COLD ADHESION No cracking or adhesion failure(FLTM BV 101-02, Procedure E)Substrates per para 5.5, materialcure schedules per para 5.4)3.7 SPONGE AN
10、D CELL STRUCTURE AFTER CUREShall exhibit uniform c ell structure with no large voids. A naturalskin formation shall result from the oven cure cycle per para 5.4.Test Method: Cross sectional observation of the sponge shall be madeby cutting through the skin and sponge mass of a cured specimen. Thespo
11、nge system shall be visually examined.ENGINEERING MATERIAL SPECIFICATIONWSB-M18P16-AWP 3948-b Page 3 of 5 3.8 ABRASIVESTest Method: Dilu te a 1g sample of the material with 1g of M14J167 specialspirits or equivalent, and mix thoroughly. Rub a portion of the diluted material 100 t imes between two pi
12、ecesof flat, clean plate glass. The appearance of scratches on theglass plate shall be considered failure.3.9 STORAGE STABILITYThe material shall be stored at temperatures bel ow 40 C away from allsources of heat and sunlight. Heat greatly acce lerates aging. Underthese storage conditions, the shelf
13、 life of the material shall be 3months. When these mat erials are stored at temperatures below 23 C,they shall be conditioned at room temperature prior to application.Adequ ate conditioning permits the material to obtain its optimumapplication properties.Ma terial may not be used after the expiratio
14、n date unless thesupplier has given written documentation to Mate rials Engineering andthe aff ected Manufacturing Plant that the material conforms torequire ments outlined in the material control plan. The suppliershall also indicate in the letter the number of additional days thematerial will be u
15、sable.3.10 QUALITYMateria l shall be a smooth homogeneous product free from abrasiveparticl es, it shall be consistent color and texture, and free fromobjectionable odors dur ing normal storage. It shall be suitable forthe intended application.3.11 FUNCTIONAL APPROVALMaterials being evaluated for ap
16、proval to this s pecification shall besubject ed to a production trial. Functional trial results must beapp roved by the affected assembly operation and Design Engineeringoffice. Results shall be made available to Materials Engineeringprior to material approval and release.3.12 ADDITIONAL REQUIREMEN
17、TSSpecific 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.ENGINEERING MATERI
18、AL SPECIFICATIONWSB-M18P16-AWP 3948-b Page 4 of 5 3.13 SUPPLIERS RESPONSIBILITYAll materials supplied to this specification must be equivalent inal l characteristics to the material upon which approval wasoriginally granted.Pr ior to making any changes in the properties, composition,co nstruction, c
19、olor, processing, or labeling of the materialorig inally approved under this specification, whether or not suchchange s affect the materials ability to meet the specificationrequirements, the Supplier shall notify Purchasing, Toxicology, andthe affected Materials Engineering activity. Test data, tes
20、tsamples, and a new code identification are to be submitted with therequest.Substance restrictions imposed by law, regulations, or Ford apply tothe materials addressed by this document. The restrictions aredefined in Engineering Material Specification WSS-M99P9999-A1.4. APPROVAL OF MATERIALSMat eria
21、ls 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 theaffe cted Purchasing, Design, and Materials Engineering activity. Uponrequest, the Supplier
22、 shall submit to the affected Materials Engineeringactivity its own laboratory rep ort to the specification (test results, notnominal values), the material designation and code number, and testspecim ens for Ford evaluation. Upon approval, the material will be addedto the Engineering Material Approv
23、ed Source List.5. GENERAL INFORMATIONThe information given below is provided for clarification and assistancein meeting the requirements of this specification.5.1 WEIGHT PER VOLUME, Typical 1.5 - 1.7 kg/L5.2 VISCOSITY, Typical 20 - 50 s5.2.1 As received5.2.2 Aged 72 h at 40 +/- 1 C No more 50%increa
24、se fromoriginal5.3 HARDNESS, Durometer A, Typical 25 - 45ENGINEERING MATERIAL SPECIFICATIONWSB-M18P16-AWP 3948-b Page 5 of 5 5.4 CURE SCHEDULENote: Prior to curing at assembly plant oven conditions, pre-curethe samples at FRP supplier recommendation (150 C for 30minutes oven temperature, typical).5.
25、4.1 Minimum bake 135 C for 15 minutes ma ximum, oventemperatureMaximum bake 205 C for 40 minutes mi nimum, oventemperature5.5 SUBSTRATES5.5.1 Fiber glass Reinforced Polyester (FRP) as specified by BodyEngineering Office.Nominal 2.5 mm thicknes s - surface prepared in accordance toadhesive suppliers recommendation.5.6 CROSS LAP ADHESION, min 240 kPa150 C for 30 minutes oven temperature, Typical(FLTM BV 101-04)
