1、 ENGINEERING MATERIAL SPECIFICATIONMaterial Name Specification NumberDate Release No. Release/Revision1991 12 02 EP00E01089491000 revised 3.5.1 and 4.; added 5.21990-10-08 EP00E01031541000 Released KW conc. J.SchultWP 3948-a Page 1 of 4 PAINT, WATERBORNE, PLASTIC SUBSTRATES,INTERIOR WSK-M62J27-A1. S
2、COPEThe material defined by this sp ecification is a waterborne interior bakingpaint for plastic parts.2. APPLICATIONThis spe cification was released originally for material used as one coatbaking paint for various interior applications.3. REQUIREMENTS3.1 STATISTICAL PROCESSSupplie rs must conform t
3、o 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 the final product is continuously reduced.3.2 INF
4、RARED 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 itute the reference standard and shall be kept o
5、n 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 CONDITIONINGAll test values indicated herein are based on ma terial conditioned ina control led atmosphere of 23 +/- 2
6、C and 50 +/- 5 % relativehumidity for not less than 24 h prior to testing and tested under thesame conditions unless otherwise specified.3.4 COMPOSITION3.4.1 Resin: Waterbased synthetic resins.3.4.2 Pigments: Pigments to obtain the desiredcolour and properties.ENGINEERING MATERIAL SPECIFICATIONWSK-M
7、62J27-AWP 3948-b Page 2 of 4 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 Ini
8、tial Sample +/- 1 %;(FLTM BI 102-01) min. 25 %The n on-volatile content shall be determined at a sprayviscosity of 35 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 sp
9、ecified by the supplier(FLTM BI 111-01, FC #4)The material can be reduced with deionized water.3.5.5 Organic solvent content see Initial Sample +/- 5 gThe content of organic solvents is defined as:g orga nic solvents per kg material at spray viscosity,determined under the conditions of para 3.5.13.5
10、.6 Dry Hiding Power, max. 15 um(FLTM BI 158-01)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.3.6 PREPARATION OF TEST PA
11、NELS3.6.1 SubstrateABS, Polycarbonate, Polypropylene, etc. as specified onEngineering Drawing.Note: PP/EPDM plastics must be primed with an ad hesion primerprior to painting.ENGINEERING MATERIAL SPECIFICATIONWSK-M62J27-AWP 3948-b Page 3 of 4 3.6.2 Plastic PreparationThe surface to be painted shall b
12、e cleaned by an acceptablepr ocess, e.g. power wash, to remove mold releasing agents,fingerprints, oils, dirt and moisture.3.6.3 Primer (not mandatory, only if required.)Application of a primer surfacer, film thickness and bakingas specified in the relevant material specification.3.6.4 Topcoat appli
13、cationDry film thickness: 15 - 25 micrometre;Flash off time: 5 minutes;Baking: 20 minutes at 80 C (Object temperature).3.6.5 Ageing:Test panels prepared under this specification shall be agedfor at least 72 h at 23 +/- 2 C or 16 h at 43 +/- 2 C beforetesting for resistance properties.3.7 APPEARANCEC
14、ol our, 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 see MAS - Panel(FLTM BI 110-01, 60 deg)3.8 RESISTANCE PROPERTIESTest Panels and painted plastic parts prepared according
15、 to thisspecification shall meet all requirements of performancespecification WSK-M2P161-A.3.9 QUALITYThe topcoat must be ada ptable for application in accordance with theapp ropriate Ford Motor Company Process Specification. The topcoatmust be compatible with all related materials.3.10 SUPPLIERS RE
16、SPONSIBILITYAll materials supplied to this specification must be equivalent inal l characteristics to the material upon which approval wasoriginally granted.ENGINEERING MATERIAL SPECIFICATIONWSK-M62J27-AWP 3948-b Page 4 of 4 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 propose
18、d 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 ared
19、efined 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 acti
20、vity. Suppliers desiring approval ofthe ir materials shall first obtain an expression of interest from theaffec ted Purchasing, Design and Materials Engineering activity. Uponrequest, the Supplier shall submit to the affected Materials Engineeringactivity a completed copy of their laboratory test re
21、ports, signed by aqualified and authorized representative of the test faci lity, demonstratingful l compliance with all the requirements of this specification (testresults, not nominal values), the material designation a nd code number, andtest specimens for Ford evaluation. In addition to meeti ng
22、the requirementsof thi s specification, the materials will be assessed for suitability forintended applications as part o f the approval process. Upon approval, thematerial will be added to the Engineering Material Approved Source List.5. GENERAL INFORMATIONThe information given below is provided fo
23、r assistance and clarificationand does not represent requirement(s) to this specification.5.1 DENSITY OF THE DRY FILM see Initial Sample(FLTM BI 154-02) +/- 0.05 kg/L5.2 MATERIAL REFERENCEAll related materials u sed for approval of topcoat according to thisspecification, e.g. plastic substrates, shall be noted in the InitialSample Report of the topcoat.
