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, HIGH FLEXIBLE, WSK-M16J10-APLASTIC SUBSTRATES, EXTERIOR1. SCOPEThe mate rial defined by this specification is
2、 a high flexible exteriorpaint for plastic substrates. It must be cured with a suitable isocyanatehardener.2. APPLICATIONThis spe cification was released originally for material used as two packpaint for plastic bumpers.3. REQUIREMENTS3.1 STATISTICAL PROCESSSupplie rs must conform to the requirement
3、s 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 the final product is continuously reduced.3.2 INFRARED SPECTROPHOT
4、OMETRY 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 itute the reference standard and shall be kept on file at thedesi
5、gnated 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 performed in acontrolled atmosphere of 23 +/- 2 C and 50 - 65 % relative
6、 humidityif not otherwise specified.3.4 COMPOSITION3.4.1 Resin: Synthetic resins, containinghyroxyl groups.3.4.2 Pigments: Pigments to obtain the desiredcolour, grain and properties.ENGINEERING MATERIAL SPECIFICATIONWSK-M16J10-AWP 3948-b Page 2 of 4 3.4.3 Solvent Emissions see Initial Sample +/- 1 %
7、(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 %;(FLTM BI 102-01) min 55 %The n on-volatile content shall be
8、 determined at a sprayviscosity of 30 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 supplier(FLTM BI 111-01, FC #4)The material can be reduced with X
9、ylene (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. 25 micrometre(FLTM BI 158-01)3.5.7 Storage Stability: 90 daysDuri ng a storage of 90 d
10、ays between 5 and 32 C temperaturethe m aterial as supplied shall not settle up or cakeinso luble. After the storage the material must pass allspecification requirements.3.6 PREPARATION OF TEST PANELS3.6.1 SubstratePolycarbonate, Polyurtethane, Polypropylene, etc . as requiredon Engineering Drawing.
11、Note: PP/EPDM plastics must be primed with an ad hesion primerprior to painting.ENGINEERING MATERIAL SPECIFICATIONWSK-M16J10-AWP 3948-b Page 3 of 4 3.6.2 Plastic PreparationThe surface to be painted shall be cleaned by an acceptablepr ocess, e.g. power wash, to remove mold releasing agents,fingerpri
12、nts, 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 micrometreFlash off time: 5 minutesBaking: 20 minutes at 80 C (Object te
13、mperature)3.6.4 AgeingTest panels prepared under this specification shall be agedfor at least 168 h at 23 +/- 2 C or 16 h at 45 + /- 1 C beforetesting for resistance properties.3.7 APPEARANCECol our, gloss, grain and surface finish shall match master TrimSample and/or Master Appearance Sample as app
14、roved by Design.3.7.1 Colour see MAS - Panel(FLTM BI 109-01)3.7.2 Gloss and GrainVisual matching with MAS - Panel.3.8 RESISTANCE PROPERTIESTest Panels and plastic parts painted according to para 3.6 of thisspecification shall meet all requirements of performancespecification WSK-M2P145-A.3.9 QUALITY
15、The top coat must be adaptable for application i n accordance with theappropriate Ford Motor Company Process Specification.The top coat must be compatible with all related materials.ENGINEERING MATERIAL SPECIFICATIONWSK-M16J10-AWP 3948-b Page 4 of 4 3.10 SUPPLIERS RESPONSIBILITYAll materials supplie
16、d 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, color, processing or labelling of the materialorig inally approved under this specification, whether
17、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 Engineeringactivity. Test data, test sample
18、s 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 aredefined in Engineering Material Specification WS S-M99P9999-A1, unlessa different suffix (e.g., A2 or
19、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 activity. Suppliers desiring approval ofthe ir materials shall first obtain an expression of interest fro
20、m 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 specification (test results, notnominal values), the material designation and code number, and testspecimen s f
21、or 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)
