1、 ENGINEERING MATERIAL SPECIFICATIONMaterial Name Specification NumberDate Release No. Released1994 12 07 Revised and Retyped was: 5 pages1994 05 03 C10348591 Revised 3.6.2, 3.8.2 K Wolters1993 03 01 EP00E10258809000 Released KWWP 3948-a Page 1 of 6 PRIMER SURFACER, WATER BASED, PU MODIFIED, COLORED
2、ESK-M62J32-A1. SCOPETh e material defined by this specification is a water borne stone peckresist ant baking primer surfacer for exterior automotive applications fornominal 30 micrometre film thickness.2. APPLICATIONThis specification was originally released for material used as primersurfa cer on b
3、aked EC surfaces on bodies and small parts. The primer canbe pai nted with either solvent borne solid color topcoat or solvent basedas well as water based basecoat.On cer tain non-visible interior or underbody surfaces, the primer may notbe followed by a topcoat.The pr imer is suitable for electrost
4、atic and pneumatic spray application.3. REQUIREMENTS3.1 STATISTICAL PROCESSSupplie rs must conform to the requirements of Ford Quality SystemStand ard Q-101. A mutually acceptable Control Plan as describedtherein is required for material/source approval. Appropriatestatist ical tools must be used to
5、 analyze process/product data sothat variation in the 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 thermo
6、grams 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 spectraand thermograms that correspond to the reference standard when testedunder the same conditions.3.3 CONDITIONINGAll test
7、 values indicated herein are based on ma terial conditioned ina control led atmosphere of 23 +/- 2 C and 50 +/- 5 % relativehumidity for not less than 24 h prior to testing and tested under thesame conditions unless otherwise specified.ENGINEERING MATERIAL SPECIFICATIONESK-M62J32-AWP 3948-b Page 2 o
8、f 6 3.4 COMPOSITION3.4.1 VehicleWater based polyurethane modified polyester resins andsui table cross linking components. The properties of theprimer shall be determined by urethane groups.3.4.2 PigmentsPigments and fillers to obtain the desired color andproperties.3.5 MATERIAL PROPERTIES3.5.1 Non-V
9、olatile See Initial Sample +/- 1 %;(FLTM BI 102-01) minimum 50 %The n on-volatile content shall be determined at a sprayviscosity of 30 seconds 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
10、4 Spray Viscosity As specified by supplier(FLTM BI 111-01, FC #4)The material can be reduced with deionized water.3.5.5 Content of Organic Solvents, max 7 %The content of organic solvents is defined as weight % oforganic solvents at spray viscosity per 3.5.4.3.5.6 Storage Stability 90 dDuring a sto
11、rage at a temperature between 5 and 32 C, thematerial as supplied shall not settle up or cake insoluble.After the storage, the material must pass all specificationrequirements.ENGINEERING MATERIAL SPECIFICATIONESK-M62J32-AWP 3948-b Page 3 of 6 3.6 PREPARATION OF TEST PANELS(FLTM BI 103-02)Test panel
12、s shall be prepared according to FLTM BI 103-02/2 for allinvestigations, coating classes as follows:Coating class: 1 2 3E-coat Primer X X XPrimer Surfacer X X XEnamel Topcoat - - -Base coat/Clear coat - - XNote: For investigatio n of performance and resistance requirements,sil ver metallic and white
13、 topcoat shall be used; for appearanceinvestigations, black and dark metallic.3.6.1 SubstrateZinc phosphated steel panels according to WSK-M301-C,ele ctrocoated with WSK-M64J29-C or equivalent material asused in the plant. Fil m thickness and baking as required inthe relevant Material Specification.
14、3.6.2 Primer ApplicationFilm Thickness 3 0 - 40 micrometre(FLTM BI 117-01)Flash off: 10 minutes/RTPrecuring: 10 minutes/100 CBaking (metal temperature): 10 minutes/165 COverbake (for Initial Approval only): 10 minutes/190 C3.6.3 Top CoatAp plication of top coat system as currently used in theplant,
15、film thickness a nd baking as required in the relevantMaterial Specification.3.6.4 Ageing 72 hTest panels prepared under this specification shall be agedfor at least 72 hours at 23 +/- 2 C or 16 hours at 45 +/- 1 Cbefore testing for resistance properties.3.7 APPEARANCE3.7.1 Color (Primer only)Visual
16、 conformance with the Initial Sample within acceptabletolerance.3.7.2 Gloss (Primer only) 70 - 85 %(FLTM BI 110-01, 60 deg)ENGINEERING MATERIAL SPECIFICATIONESK-M62J32-AWP 3948-b Page 4 of 6 3.7.3 LevelingThe primer must show maximum surface quality after bakingwithout any structure or run tendency
17、when applied in a dryfilm thickness 45 micrometre.3.7.4 Hold OutThere shall be no evidence of dulling or strike in ordifference in gloss whe n the top coat is applied over sandedand unsanded primer.3.8 RESISTANCE PROPERTIESAll tests shall be performed on Test Panels prep ared per 3.6, coatingclass 1
18、 2 and 3, unless otherwise specified.3.8.1 Adhesion Grade 1(FLTM BI 106-1, Method B)3.8.2 Stone Chip Resistance, max Rating 2(FLTM BI 157-04)3.8.3 SandingAf ter baking, the primer can be sanded manually at roomtemperature without clogging (spot repair).3.9 PEELING RESISTANCE No PeelingCurrent produ
19、ction clearcoat 12 monthsProduction clearcoat without UV-Stabilizer 3 monthsTes t Method: Test panels shall be primed according to para 3.6 ofthis specification and painted with current production clearcoat aswell as clearcoat witho ut UV-stabilizer. Dry film thickness 30 - 35micrometre.The pa nels
20、shall be exposed in the area of Miami, Florida 5 degfacing south for the required exposure time.For 3 months exposure t ime, the exposure shall be started from Aprilto June and end late in September.Eva luation: After the exposure, the surface shall show neitherblist ering nor peeling nor any other
21、deterioration caused by theprimer.3.10 PERFORMANCE REQUIREMENTTest panels and painted parts prepared according to paragraph 3.6 ofthis specification shall meet all requirements of PerformanceSpecification WSK-M2P136-A.3.11 QUALITYENGINEERING MATERIAL SPECIFICATIONESK-M62J32-AWP 3948-b Page 5 of 6 Th
22、e primer must be adaptable for application in accordance withappropriate Ford Motor Company Process Specification U-C 80.The primer must be compatible with all related materials, e.g.electrocoat primer, sto ne chip primer, repair primer, PVC materials,sealers, adhesives, top coat materials, etc.3.12
23、 SUPPLIERS RESPONSIBILITYAll materials supplied to this specification must be equivalent inal l characteristics to the material upon which approval wasoriginally granted.Pri or to making any change in the properties, composition,constr uction, color, processing or labeling of the materialorig inally
24、 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 proposed changesand obtain the written approval of the Materials
25、 Engineeringactivity. Test data, t est samples and a new code identification areto be submitted with the request.Substance restrictions imposed by law, regulations or Ford, apply tothe materials addressed by this document. The restrictions aredefined in Engineering Materials Specification WSS-M99P99
26、99-A1.4. APPROVAL OF MATERIALSMat erials 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 theaffec ted Purchasing, Design and Materials Engineerin
27、g activity. Uponrequest, the Supplier shall submit to the affected Materials Engineeringactivity a completed copy of their laboratory test reports, signed by aqualified and authorized representative of the test faci lity, demonstratingful l compliance with all the requirements of this specification
28、testresults, not nominal values), the material designation a nd code number, andtes t specimens for Ford evaluation. Fords engineering approval of amateri al will be based on its performance to this specification and on anassessment of suitability for intended processes and/or applications. Uponapp
29、rov al, the material will be added to the Engineering Material ApprovedSource List.ENGINEERING MATERIAL SPECIFICATIONESK-M62J32-AWP 3948-b Page 6 of 6 5. GENERAL INFORMATIONThe information given below is provided for clarification and assistancein meeting the requirements of this specification.5.1 D
30、ENSITY OF THE DRY FILM See Initial Sample +/- 0.02 kg/L(FLTM BI 154-02)5.2 pH VALUE See Initial Sample +/- 0.55.3 MATERIAL REFERENCEAll related materials used for approval of primer according to thisspec ification, e.g. electrocoat primer, stone chip primer and topcoat materials, etc., as well as the application parameter shall benoted in the Initial Sample Report of the primer.
