1、 ENGINEERING MATERIAL SPECIFICATIONMaterial Name Specification NumberDate Action Changes1990-08-01 EP00E01031538000 Released KW conc. J.SchultWP 3948-a Page 1 of 4 PAINT, TEXTURED, TWO PACK, FLEXIBLE, PLASTIC WSK-M16J13-ASUBSTRATES, EXTERIOR1. SCOPEThe mate rial defined by this specification is an e
2、xterior textured paintfor plas tic substrates. It must be cured with a suitable isocyanatehardener.2. APPLICATIONThis spe cification was released originally for material used as two packtextured paint for various exte rior applications such as radiator grilles,body side moldings, etc.3. REQUIREMENTS
3、3.1 STATISTICAL PROCESSSupplie rs must conform to the requirements of Ford Quality SystemStanda rd Q-101. A mutually acceptable Control Plan as describedth erein is required for material/source approval. Appropriatestatist ical tools must be used to analyze process/product data sothat variation in t
4、he 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 approval shallconst
5、itute the reference standard and shall be kept on file at thedesignated material lab oratory. All samples shall produce IR spectraand thermograms that correspond to the reference standard when testedunder the same conditions.3.3 CONDITIONINGAl l Tests according to this specification shall be perform
6、ed in acontrolled atmosphere of 23 +/- 2 C and 50 - 65 % relative humidityif not otherwise specified.ENGINEERING MATERIAL SPECIFICATIONWSK-M16J13-AWP 3948-b Page 2 of 4 3.4 COMPOSITION3.4.1 Resin: Synthetic polyhydroxy acrylicresins.3.4.2 Pigments: Pigments to obtain the desiredcolour, grain and pro
7、perties.3.4.3 Solvent Emissions see Initial Sample +/- 1 %(ASTM D 3960)This r equirement is as determined by the United StatesEnvironmental Protection Agency Reference Method #24 and isonly applicable to materials used in the USA.3.5 MATERIAL PROPERTIES3.5.1 Non-volatile see Initial Sample +/- 1 %;(
8、FLTM BI 102-01) min. 50 %The n on-volatile content shall be determined at a sprayviscosity of 40 s according to para 3.5.4.3.5.2 Density see Initial Sample +/- 0,05 g/mL(ASTM D 1475)3.5.3 Viscosity as supplied see Initial Sample +/- 5 s(FLTM BI 111-01)3.5.4 Spray Viscosity as specified by the suppli
9、er(FLTM BI 111-01, FC #4)The material can be reduced with Xylene (WSK-M14J239-A) andButyl acetate (WSK-M14J228-B).3.5.5 Mixing ratio as specified by the supplierThe material shall be cured with isocyanate hardenerWSK-M99J359-A or WSK-M99J360-A.3.5.6 Dry Hiding Power, max 30 micrometre(FLTM BI 158-01
10、)3.5.7 Storage Stability 90 daysDuri ng a storage of 90 days between 5 and 32 C temperaturethe m aterial as supplied shall not settle up or cakeinsol uble. After the storage the material must pass allspecification requirements.ENGINEERING MATERIAL SPECIFICATIONWSK-M16J13-AWP 3948-b Page 3 of 4 3.6 P
11、REPARATION OF TEST PANELS3.6.1 SubstrateABS, Polyamide, Polycarbonate or Polypropylene, etc. asrequired on Engineering Drawing.Note: PP/EPDM plastics must be primed with an ad hesion primerprior to painting.3.6.2 Plastic PreparationThe surface to be painted shall be cleaned by an acceptablepr ocess,
12、 e.g. power wash, to remove mold releasing agents,fingerprints, oils, dirt and moisture.3.6.3 Primer Surfacer (if required)Application of a primer surfacer, film thickness and bakingas specified in the relevant material specification.3.6.4 Topcoat applicationDry film thickness: 30 - 35 micrometre;Fl
13、ash off time: 3 minutes at room temperature;Baki ng: 15 minutes at 80 C or 5 minutes at 120 C (Objecttemperature).3.6.5 AgeingTest panels prepared under this specification shall be agedfor at least 72 h at 23 +/- 2 C or 16 h at 45 +/- 1 C beforetesting for resistance properties.3.7 APPEARANCECol our
14、, gloss, grain and surface finish shall match master TrimSample and/or Master Appearance Sample as approved by Design.3.7.1 Colour see MAS - Panel(FLTM BI 109-01)3.7.2 Gloss and GrainVisual matching with MAS - Panel.ENGINEERING MATERIAL SPECIFICATIONWSK-M16J13-AWP 3948-b Page 4 of 4 3.8 RESISTANCE P
15、ROPERTIESTest Panels and plastic parts painted according to para 3.6 of thisspecification shall meet all requirements of performancespecification WSK-M2P143-A.3.9 QUALITYThe top coat must be adaptable for application i n accordance with theappropriate Ford Motor Company Process Specification.The top
16、 coat must be compatible with all related materials.3.10 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,
17、 color, processing or labelling 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 notify Purchasing, Toxicology andthe affected Materials Engineering activity of the propos
18、ed changesand obtain the written approval of the Materials Engineeringactivity. Test data, test samples and a new code identification areto be submitted with the request.Substance restrictions imposed by law, regulations or Ford apply tothe mat erials addressed by this document. The restrictions are
19、defined in Engineering Material Specification WS S-M99P9999-A1, unlessa different suffix (e.g., A2 or A3) is specified on the engineeringdocument for the application.4. APPROVAL OF MATERIALSMat erials defined by this specification must have prior approval by theresponsible Materials Engineeri ng act
20、ivity. Suppliers desiring approval ofthe ir materials shall first obtain an expression of interest from theaffect ed Purchasing, Design and Materials Engineering activity. Uponrequest, the supplier shall submit to the affected Materials Engineeringactivity its own laboratory rep ort to the specifica
21、tion (test results, notnominal values), the material designation and code number, and testspecimen s for Ford evaluation. Upon approval, the material will be addedto the Engineering Material Approved Source List. 5. GENERAL INFORMATIONThe information given below is provided for assistance and clarificationand does not represent requirement(s) to this specification.5.1 DENSITY OF THE DRY FILM see Initial Sample +/- 0.02 kg/L(FLTM BI 154-02)
