1、 ENGINEERING MATERIAL SPECIFICATIONMaterial Name Specification NumberDate Action Changes1990-11-02 EP00E01031541000 Released KW conc. J.SchultWP 3948-a Page 1 of 4 PAINT, TWO PACK, PLASTIC SUBSTRATES, INTERIOR WSK-M15J4-A1. SCOPEThe mat erial defined by this specification is an interior two pack pai
2、ntfor plastic substrates. It must be cured with a suitable isocyanatehardener.2. APPLICATIONThis spe cification was released originally for material used as two packpaint for various interior applications.3. REQUIREMENTS3.1 STATISTICAL PROCESSSupplie rs must conform to the requirements of Ford Quali
3、ty 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 SPECTROPHOTOMETRY AND/OR T
4、HERMAL 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 thedesignated material
5、 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 C and 50 +/- 5 % relativehumidit
6、y for not less than 24 h prior to testing and tested under thesame conditions unless otherwise specified.3.4 COMPOSITION3.4.1 Resin: Synthetic polyhydroxy acrylicresins.3.4.2 Pigments: Pigments to obtain the desiredcolour and properties.ENGINEERING MATERIAL SPECIFICATIONWSK-M15J4-AWP 3948-b Page 2 o
7、f 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 Initial Sample +/- 1 %;(FLTM
8、 BI 102-01) min 45 %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 +/- 0,02 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(FL
9、TM 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)3.5.
10、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 PANELS3.6.1 SubstratePolycarbonate, ABS, Polyamide, Po
11、lypropylene as required onEngineering Drawing.Note: PP/EPDM plastics must be primed with an ad hesion primerprior to painting.ENGINEERING MATERIAL SPECIFICATIONWSK-M15J4-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 wa
12、sh, to remove mold releasing agents,fingerprints, oils, dirt and moisture.3.6.3 Primer Surfacer (not mandatory, only if required.)Application of a primer surfacer, film thickness and bakingas specified in the relevant material specification.3.6.4 Top coat applicationDry film thickness: 40 - 45 micro
13、metre;Flash off time: 5 minutes;Baki ng: 15 minutes at 80 C or 5 minutes at 130 C (Objecttemperature).Air drying at room temperature: 2 h tackfree, 24 h cured.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 fo
14、r resistance properties.3.7 APPEARANCECol 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 p
15、ainted plastic parts prepared according to thisspecification shall meet all requirements of performancespecification WSK-M2P144-A.3.9 HARDNESS3.9.1 Tukon Hardness, min. 6(FLTM BI 112-02)3.9.2 Pencil Hardness, min. H(FLTM BI 151-01)ENGINEERING MATERIAL SPECIFICATIONWSK-M15J4-AWP 3948-b Page 4 of 4 3.
16、10 QUALITYThe 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.3.11 SUPPLIERS RESPONSIBILITYAll materials supplied to this specification must be equivalent inal l characte
17、ristics 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 or not suchchange s affect the materials ability to meet t
18、he 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 samples and a new code identification areto be submitted with th
19、e 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 A3) is specified on the engineeringdocument for the applic
20、ation.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 from theaffect ed Purchasing, Design and Materials Engineerin
21、g 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 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(FLTM BI 154-02) +/- 0,02 kg/L
