1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2007 07 31 Activated J. Robincheck Printed copies are uncontrolled Copyright 2007, Ford Global Technologies, LLC Page 1 of 10 PAINT, ONE COMPONENT MONOCOAT OVER RIGID WSS-M16J19-B1 SUSTRATES, EXTERIOR PAINT, TWO COMPONENT MONOCOAT OVER RIGID W
2、SS-M16J19-B2 SUBSTRATES, EXTERIOR 1. SCOPE The materials defined by these specifications are monocoat paints applied by a baked process. 2. APPLICATION These specifications were released originally for paints used as the final topcoat on exterior trim components made of rigid substrates, such as spo
3、ilers, appliqus, mirror housings, handles, grilles, badges. It shall be satisfactory for use over specified primers or over previously baked enamel, as in paint repair or tutone operations. 2.1 LIMITATIONS Bake temperature should not exceed softening temperature of substrate material as agreed upon
4、by Ford Materials Engineering. 3. REQUIREMENTS Testing to be used for initial qualification of materials and shall be made on the basis of comparison with approved production material, chosen by the approving materials engineer. 3.1 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers a
5、nd part producers must conform to the Companys Standard Requirements for Production Materials (WSS-M99P1111-A). 3.2 COMPOSITION The monocoat shall contain UV absorbers. The supplier will furnish the specific composition and concentration of the absorbers upon request. 3.2.1 Resin Shall be either a p
6、olyester, acrylic, modified urethane polymer or a polyurethane. Minor amounts of modifiers and/or plasticizers are allowed. 3.2.2 Pigments Pigments are exterior automotive grade selected to match the Ford Motor Company master and meet the durability requirements. ENGINEERING MATERIAL SPECIFICATIONWS
7、S-M16J19-B1/B2 Printed copies are uncontrolled Copyright 2007, Ford Global Technologies, LLC Page 2 of 10 3.2.3 Solvents The volatility of solvents will be such that there shall be no paint sagging, roughness or dry spray at specified film thicknesses. Solvents shall be HAPS compliant if it is requi
8、red by local government regulations 3.3 PHYSICAL PROPERTIES LIQUID STATE The following evaluation must be conducted on the monocoat at application viscosity. Throughout the application viscosity range, material shall be in compliance with local emission regulations. Property variation acceptability
9、as identified below, shall be based on the recorded values of the originally approved production sample as approved by Ford Materials Engineering. This data will be used in developing control plan requirements. 3.3.1 Non-Volatile Content, range Initial sample +/- 4% (ASTM D 1353) 3.3.2 Volatile Orga
10、nic Compound, range Initial sample +/- 1% (ASTM D 3960) 3.3.3 Weight per Volume, range Initial sample +/- 0.03 g/ml (ASTM D 1475) 3.3.4 Volume Solids, range Initial sample +/- 2.0% (ASTM D 2697) 3.3.5 Viscosity Report (ASTM D 1200) 3.3.6 Stability No more than 30% (ASTM D 1849) viscosity increase pe
11、rmitted. 3.3.6.1 Shelf Stability, 90 days 3.3.6.2 Accelerated Stability, 60 C, 16 h 3.3.7 Resistivity 0.005 to 2.00 megohms (ASTM D 5682) Volatile solvents and other components affecting electrical conductivity shall be adjusted such that the resistivity at application viscosity shall be within spec
12、ified limits. ENGINEERING MATERIAL SPECIFICATIONWSS-M16J19-B1/B2 Printed copies are uncontrolled Copyright 2007, Ford Global Technologies, LLC Page 3 of 10 3.4 PREPARATION OF TEST PANELS 3.4.1 Substrates Auto body steel, aluminum, pre-coated or electroplated zinc or zinc alloy coated steel and zinc
13、die casting or as specified on Engineering Document. Rigid polymer and rigid polymer blends, SMC, ABS, PPO, etc. with a flex modulus (ASTM D 790, Method 1) typically greater than 1750 MPa. 3.4.2 Substrate Condition The surface to be coated must be cleaned to ensure the absence of oil or alkaline res
14、idues, fingerprints, corrosion, mold release agents, dirt, moisture, and other foreign materials. Surface energy/resistivity or chemical reaction(s) enhancements (flaming, corona discharge or plasma) and/or addition of conductive materials, necessary to meet the requirements of this specification, s
15、hall be specified on Engineering Documents 3.4.3 Electrocoat For metallic substrates requiring e-coat, apply 20 - 23 m and bake 10 minutes at 182 C metal temperature or as otherwise recommended. Record e-coat and oven type used. 3.4.4 Primer Apply 17 - 24 m DFT (Dry Film Thickness) of the primer or
16、as otherwise recommended, as specified for the substrate. 3.4.5 Monocoat Apply monocoat to required dry film thickness by spray under conditions appropriate for monocoats, and flash as required. Bake using appropriate bake schedule. Record paint and oven type used. (As developed by para 3.5). 3.4.6
17、Design Verification/Initial Qualification Test Requirements as listed in Table 1 3.4.7 Aging After application of the top coat, all panels shall be aged at least 72 h at 23 +/- 2 C, 50 +/- 5% relative humidity or 16 hours at 45 +/- 1 C before testing. ENGINEERING MATERIAL SPECIFICATIONWSS-M16J19-B1/
18、B2 Printed copies are uncontrolled Copyright 2007, Ford Global Technologies, LLC Page 4 of 10 3.5 PROCESS WINDOW DEFINITION - NEW RESIN TECHNOLOGIES ONLY The supplier shall perform a DOE utilizing response surface analysis to determine the Process Window of the system. The three variables to be incl
19、uded in the design are Bake Time, Bake Temperature, and Film Thickness. An initial screening experiment should be run to determine what level will generate a window which includes testing to failure. This screening experiment should be reviewed with the Materials Engineer to set up the final DOE. Re
20、sponse attributes to the DOE should be based on the materials tested and should include, but not be limited to: Film Thickness (Para 3.6.3, 3.6.4) Ultraviolet Light Transmittance (Para 3.6.5) Adhesion (Para 3.7.1) Water Immersion (Para 3.7.2) Chipping (Para 3.7.8) Environmental Cycling (Para 3.7.9)
21、High Performance Adhesion (Para 3.7.10) Report minimum, maximum, and target values for time, temperature, and film thickness. 3.6 FILM PROPERTIES 3.6.1 Color (FLTM BI 109-01, SAE J1545 Three Angle CMC) Shall match the Master Approved Sample color panel or the initial sample as approved by Design Cen
22、ter. 3.6.2 Gloss (FLTM BI 110-01, ASTM D 523) Shall match the Master Approved Sample color panel or the initial sample as approved by Design Center. 3.6.2.1 Gloss After Rebake, max 4 unit decrease Rebake panel at target bake conditions per Para 3.5. 3.6.3 Film Thickness, min Report (FLTM BI 117-01,
23、Metallic Substrates, PELT or equivalent, ASTM B 487, Non-Metallic Substrates, PELT or equivalent) Target values shall be defined from process window (Para 3.5) and must be sufficient to meet all requirements of this Specification. Will be specified on the mutually agreed upon control plan. 3.6.4 Fil
24、m Thickness, max Report, not to exceed (FLTM BI 117-01, Metallic Substrates, PELT or equivalent, 350 micrometers ASTM B 487, Non-Metallic Substrates, PELT or equivalent) There shall be no more than 3 in-department repairs. ENGINEERING MATERIAL SPECIFICATIONWSS-M16J19-B1/B2 Printed copies are uncontr
25、olled Copyright 2007, Ford Global Technologies, LLC Page 5 of 10 3.6.5 Ultraviolet Light Transmittance For each color, report the minimum film build of monocoat required to meet a maximum light transmission of no more than 0.1% at 360 nm and 0.5% at 400 nm. Achieving compliance may require the use o
26、f a primer-surfacer. The equipment used for this measurement is an integrating sphere spectrophotometer or equivalent. These values shall be used to help determine minimum film thickness for the process window in section 3.5. 3.6.6 General The paint shall bake out to a presentable serviceable film s
27、howing no craters, pinholes, seediness, abnormal roughness or excessive metallic mottling. It shall have a reasonable tolerance for ordinary cleaning, and exhibit no dulling or color change when washed with commercially available cleaners. 3.7 RESISTANCE PROPERTIES 3.7.1 Paint Adhesion, max Grade 2
28、(FLTM BI 106-01, Method B, carbide tip scribe only) Lightly hand sand paint film surface (10 double rubs, moderate pressure) with P600 paper until dull, before scribe operation and checking adhesion. 3.7.2 Water Immersion No blistering, dulling, (FLTM BI 104-01, 240 h) softening, loss of adhesion, a
29、nd/or any other film failure Adhesion shall be tested according to Para 3.7.1 within 20 minutes after removal from water. 3.7.3 Condensing Humidity Resistance No blistering, dulling, (FLTM BI 104-02, Method A, 240 h) softening, loss of adhesion, and/or any other film failure After exposure, adhesion
30、 testing performance must be met per Para 3.7.1. 3.7.4 Fluid Spotting Resistance, min Rating 4-5 (FLTM BI 168-01, Method A and B, AATCC Evaluation Procedure 1/ISO 105-A02) Test Fluids: (Body and Exterior Trim use) No color dulling, surface distortion or permanent softening permitted. After exposure,
31、 adhesion testing performance must be met per Para 3.7.1. ENGINEERING MATERIAL SPECIFICATIONWSS-M16J19-B1/B2 Printed copies are uncontrolled Copyright 2007, Ford Global Technologies, LLC Page 6 of 10 3.7.5 Acid Resistance Equal or better than (FLTM BI 113-01 except at 60 and current production 80 C
32、for 30 minutes) material The following solutions shall be tested on candidate materials: Sulfuric acid (H2SO4) adjusted to pH of 2 Phosphoric acid (H3PO4), 0.5% Bee dropping mixture (47 g Formic Acid, 24 g Tannic Acid 10% in H2O, 24 g Honey, and 5 g Albumin 10% in H2O). Apply specified solutions 2 t
33、est panels. Place one each in preheated ovens at 60 and 80 C, respectively. Remove after 30 minutes. Rinse any remaining solution with water. Examine panels for etching, discoloration, pitting, etc. Report etch-free temperature for test material and control. 3.7.6 Mar Resistance A AATCC Evaluation p
34、rocedure 1: Rating 4 max Gloss Change per ASTM D 523 25% loss max Color Change per FLTM BI 109-01 E 2.0 max After 5 years Florida exposure or 5000 h accelerated weathering: AATCC Evaluation procedure 1: Rating 3 max Gloss Change per ASTM D 523 50% loss max Color Change per FLTM BI 109-01 E 5.0 max 3
35、.8.3.2 Adhesion After Water Immersion 90% adhesion (FLTM BI 104-01, 24 h) retention There shall be no blistering or delamination between any layers of the total paint system. To be evaluated on all exposure intervals. 4. GENERAL INFORMATION The information given below is provided for clarification a
36、nd assistance in meeting the requirements of these specifications. 4.1 HARDNESS (ASTM D 1474) Record value at target film and bake conditions. Shall be sufficiently cured at time of packing to withstand normal handling without damage. ENGINEERING MATERIAL SPECIFICATIONWSS-M16J19-B1/B2 Printed copies
37、 are uncontrolled Copyright 2007, Ford Global Technologies, LLC Page 9 of 10 4.2 POLISHING A and B Gloss surfaces shall be capable of being sanded with 1200 grit or finer and polished. No noticeable change in gloss or appearance except for a min of polishing lines shall result. Deep polishing lines
38、or swirl marks are not acceptable. 4.3 WAVESCAN TARGET VALUES (BYK-Gardner or equivalent) Color Target Minimums Light Metallics 55-59/42-46 50/37 Dark Metallics 60-64/47-51 55/42 Light Solids 60-64/47-51 55/42 Dark Solids 65-69/52-56 60/47 4.4 TOPCOAT PROCESSING CONDITIONS REQUIRED FOR PARA 3.6, 3.7
39、 AND 3.8. Conditions Topcoat Bake Bake Filmbuild Time Temperature 1 Low Max Max 2 High Min Min 3 Target Target Target Note 1: Control testing panel requirements to be chosen at discretion of approving materials engineer. Note 2: Testing of one specimen is required of every color per each condition l
40、isted above. ENGINEERING MATERIAL SPECIFICATIONWSS-M16J19-B1/B2 Printed copies are uncontrolled Copyright 2007, Ford Global Technologies, LLC Page 10 of 10 Table 1, Approval Test Requirements, Design Verification/Initial Qualification NEW PAINT TECHNOLOGY NEW SUBSTRATE NEW COLOR (Existing Pigment/ R
41、esin) Minimum Colors to be Tested: Black, Light Metallic, Dark Metallic Black, Light Metallic, Dark Metallic New Color 3.3 Physical Properties X X X 3.6.1 Color X X X 3.6.2 Gloss X X X 3.6.3-4 Film Thickness X X X 3.6.5 UV Transmission X X X 3.7.1 Adhesion X X X 3.7.2 Water Immersion X X X 3.7.3 Humidity X X 3.7.4 Fluid Spot X Bug & Tar only Bug & Tar only 3.7.5. Acid X X X 3.7.6 Mar Resistance X 3.7.7 Scratch Resistance X X 3.7.8 Chip Resistance X X X 3.7.9 Environmental Cycling X X 3.7.10 High Performance Adhesion X X X 3.8.1, 3 Florida Exposure X 3.8.2, 3 Weatherometer X X X
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