1、 ENGINEERING MATERIAL SPECIFICATION Date Action Revisions Rev 03 2012 02 16 N Status No replacement named N. Benipal, NA 2006 03 22 Revised Inserted 3.0; Deleted 3.1, 3.2, 3.3, 3.11, 4 1989 11 02 Released NB00I10044792 Controlled document at www.MATS Copyright 2012, Ford Global Technologies, LLC Pag
2、e 1 of 6 PRIMER LAMINATE, POLYVINYL FLUORIDE FILM/METAL ESB-M99J358-A EXTERIOR GRADE NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is a polyvinyl fluoride (PVF) film laminated to metal. The PVF layer serves as a paint primer surface which allows adhesion of automo
3、tive exterior baking paints onto difficult to paint metal substrates. The material protects against stone chipping and is inert to chemical attack and corrosion. 2. APPLICATION This specification was released originally for material used for parts such as rocker panels, wheel well lips, and greenhou
4、se moldings. The PVF film is laminated to metal coil stock which is then die cut, stamped and other-wise formed. The semi-finished parts are subsequently painted using automotive exterior baking paints. 3. REQUIREMENTS Material specification requirements are to be used for initial qualification of m
5、aterials. 3.0 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and part producers must conform to the Companys Standard Requirements For Production Materials (WSS-M99P1111-A). 3.4 APPEARANCE (FLTM BI 109-01) The color and gloss of the paint over the primed part shall match the appro
6、ved Design Center master sample, or shall be as specified on the engineering drawing. In addition, there shall be no evidence of polyvinyl fluoride film tearing, delamination or drawback on the primed part particularly in the critical radius areas after forming. Likewise, there shall be no lifting,
7、tearing, delamination or drawback of the primer layer from the metal substrate after painting of the part. 3.5 METAL BACKING The metal shall be as specified in the engineering drawing for the part. 3.6 POLYVINYL FLUORIDE FILM This film shall have the necessary flexibility and elongation characterist
8、ics at 30 C to allow it to be easily formed in the drawing operation without delamination, tearing, drawback (creepage), or cracking. The original properties of the film shall not be adversely affected after lamination or forming. ENGINEERING MATERIAL SPECIFICATION ESB-M99J358-A Copyright 2012, Ford
9、 Global Technologies, LLC Page 2 of 6 3.7 THICKNESS AND DIMENSIONS The thickness of the PVF film, metal substrate and total thickness of the laminate shall be specified on the engineering drawings along with other part dimensions. 3.8 FLAT LAMINATE PRIOR TO FORMING, UNPAINTED 3.8.1 Formability The f
10、lat laminate of PVF/metal shall bend 180 around a 3.2 mm mandrel at 30 C or 4.75 mm mandrel at 23 C without damage to the PVF or delamination at the film-to-metal bond. Additionally the flat laminate shall be subjected to a ball cup test (reference Commercial Standard CS 245-62) without damage to th
11、e film or delamination at the film-to-metal bond. 3.8.2 Resistance to Elevated Temperature The PVF shall show no creepage or drawback from the metal substrate greater than that exhibited by the approved master sample on file at Body Materials Engineering. Additionally, the PVF shall show no creep fr
12、om the scribe or delamination following ball cup testing (reference CS 245-62) and heat exposure as follows: Test Method: Samples, 100 mm x 100 mm, scored just to the metal surface; both flat and drawn via ball cup, are placed into a convection oven maintained at 121 +/- 3 C for two 30 minute cycles
13、 to simulate paint curing cycles. Between cycles, the sample should be allowed to cool to room temperature. Allow to cool to room temperature and visually examine and compare with the original exposed, approved master sample. 3.8.3 Impact, Gardner 3.8.3.1 Normal (23 +/- 2 C), min 1.1 J 3.8.3.2 Low T
14、emperature (-29 C), min 0.57 J No evidence of cracking, loss of adhesion or other mode of failure. Temporary dimpling is allowed provided the molding exhibits an acceptable appearance within 24 h after testing. Test Method: Impact samples using a Gardner Model IG 1120 (or equivalent) tester with a 1
15、3 mm diameter hemispherical impact head. The low temperature test shall be conducted after exposure for 4 h minimum at -29 C and impacted within 20 s after removal from the low temperature chamber. 3.8.4 Condensing Humidity, min 240 h (FLTM BI 104-02, Procedure A) No blistering ENGINEERING MATERIAL
16、SPECIFICATION ESB-M99J358-A Copyright 2012, Ford Global Technologies, LLC Page 3 of 6 3.8.5 Adhesion of Film to Metal 3.8.5.1 Peel Adhesion, min 67 N/width (ASTM D 413, machine method 180 peel, 25 mm/in travel) The bonded assembly shall show no evidence of blistering, peeling, lifting, or loss of ad
17、hesion or delamination after the aging test exposure listed below. 3.8.5.2 Original as received 23 +/- 2 C 3.8.5.3 14 days at 38 +/- 1 C 3.8.5.4 14 days at 38 +/- 1 C and 95-100% rel. humidity 3.8.5.5 10 cycles with each consisting of: . 4 h at -30 +/- 1 C . 4 h at 88 +/- 1 C . 16 h at 38 +/- 1 C an
18、d 95 - 100% rel. humidity 3.8.5.6 Water Resistance 240 h (FLTM BI 104-01) 3.9 FORMED PART, UNPAINTED 3.9.1 Peel Adhesion (ASTM D 413, machine method, 25 mm wide strip) The adhesion at the film-to-metal interface, when conducted on flat as well as on highly contoured surfaces and edges, shall be as f
19、ollows: Original (as received): laminate must not separate without at least 50% cohesive failure of the PVF. 3.9.2 Dimensional Stability The formed part shall show no evidence of blistering, shrinkage or expansion to the extent of causing unsightly wrinkles. The bonded assembly shall exhibit no visi
20、ble delamination, pullouts, creepage or cracking that will result in an objectionable appearance and/or exposure of the metal substrate. Test Method: Place the assembly in a convection oven maintained at 83 +/- 3 C for 7 days. Allow the specimens to cool to room temperature and examine. 3.10 PAINTED
21、 PARTS AND PANELS Panels or formed parts shall be painted with paint(s) and color(s) representative of the intended application as indicated by the Body and Chassis Engineering Department. Note: The tests selected are representative of performance expected of Base Coat/Clear Coat paint systems. 3.10
22、.1 Adhesion (FLTM BI 106-01, Method B) grade 0 ENGINEERING MATERIAL SPECIFICATION ESB-M99J358-A Copyright 2012, Ford Global Technologies, LLC Page 4 of 6 3.10.2 Water Resistance, min 240 h (FLTM BI 104-01) Test Method: Immerse the test plaque for 240 h in distilled or deionized water maintained at 3
23、2 +/- 2 C as described in FLTM BI 104-01. Remove plaque from the water and immediately scribe an “X“ through the finish to the substrate. Dry the scribed area with a paper towel, cloth or air and immediately apply with firm thumb pressure, a minimum of 1300 sq mm of 3M #898 tape. Remove the tape by
24、pulling one end at a 90 angle at moderate speed. The following conditions shall be basis for rejection: Removal of paint beyond 1.6 mm from any scribe line. Any evidence of blistering or dulling of the paint at the scribe line or elsewhere on the part. 3.10.3 Sale Spray Resistance, min 240 h (FLTM B
25、I 103-01) The formed part or panel shall show no evidence of laminate cracking, loss of adhesion or delamination. The bonded assembly will not corrode excessively or exhibit any other characteristic which would produce an objectionable appearance when the part is in the installed position. 3.10.4 Re
26、sistance to Fuel After soaking a sample in a mixture of: 80% ASTM reference fuel C 20% methanol The sample shall not exhibit any loss of adhesion between PVF film and metal substrate. Test Method: Soak the sample in a beaker of fluid for 1 h at 23 +/- 2 C. Remove the sample, dry at room temperature
27、and observe. 3.10.5 Resistance to Chemicals (1) M-14J148 Petroleum Naptha (2) SAE 10 W 30 Motor Oil Test Method: Apply 2 to 5 mL of each chemical to separate areas of a painted plaque or part. Cover each spot with a watch glass to prevent evaporation. Expose for 1 h at 23 +/-2 C. Remove watch glass
28、and wipe panel with a soft white cloth. Thoroughly wash test area with soap and water and dry. Perform adhesion per FLTM BI 106-01, Method B on test area. Adhesion must meet grade 0. Engineering may opt to skip this test if the particular paint system is not able to withstand the chemical attack. Th
29、is test is to determine the performance of the paint-to-primer adhesion. ENGINEERING MATERIAL SPECIFICATION ESB-M99J358-A Copyright 2012, Ford Global Technologies, LLC Page 5 of 6 3.10.6 Flexibility Test Method: Cut a 13 mm x 100 mm sample. Grasp sample firmly at each end, place over mandrel painted
30、 side up, and bend around mandrel 180 minimum. Use 13 mm mandrel. Acceptance: Cracking of the painted surface is permitted provided no loss of adhesion of the paint develops at the cracks. 3.10.7 Cold Flexibility Test Method: Cut a 13 mm x 100 mm sample. Place sample, mandrel and gloves into a freez
31、er at -30 +/- 2 C for 4 h minimum. Open freezer, put on gloves and grasp sample firmly at each end. Place sample over mandrel painted side up and bend around mandrel 180 minimum. Use 13 mm mandrel. Acceptance: Cracking of painted surface is permitted provided no loss of adhesion of the paint develop
32、s at the cracks. 3.10.8 Hot and Cold Cycle Test Two consecutive cycles The following sequential temperature exposures constitute one cycle: 6 hrs at -40 +/- 2 C 2 hrs at 24 +/- 2 C 6 hrs at 91 +/- 2 C 2 hrs at 24 +/- 2 C 6 hrs at 109 +/- 2 C Acceptance: All test plaques or parts must complete two cy
33、cles without cracks, splits, bulges, sinks, visual distortion, blistering, peeling or delamination. 3.10.9 Thermal Shock (FLTM BI 107-05) Direct a steam blast at the edges where the film is bonded to the metal substrate and at the cut ends. The bonded assembly shall show no evidence of degradation,
34、loss of adhesion or delamination. 3.10.10 Weathering Resistance 3.10.10.1 Florida exposure 24 mos on (Miami area, facing south at standard rack 5 from horizontal) In order to monitor interim durability, a panel shall be exposed for 12 mos in Florida concurrently with the 24 mos panels. Returned, com
35、pleted Florida exposure panels shall be washed in their entirety with a soft foam pad using a 25% Ford M-1034 Soap solution. Next, the panels are rinsed with tap water, blown dry with clean compressed air, and then placed in a deionized water bath for 16 h per FLTM BI 104-01. After panels are remove
36、d from the water bath and thoroughly blown dry, an “X“, to be located at the center of the panel and 50 mm from the bottom is scribed. This “X“ shall be 30 mm in height and 20 mm wide. The scribed “X“ is then tape-pulled with 3M brand 898-2 tape. There shall be no evidence of peeling or blistering.
37、ENGINEERING MATERIAL SPECIFICATION ESB-M99J358-A Copyright 2012, Ford Global Technologies, LLC Page 6 of 6 The panels shall show no delamination, cracking, blistering or peeling in either the paint to PVF film interface or the film to metal interface. Dulling, chalking, fading or other color change
38、in the paint layer will not exceed established limits for that paint. Note: If the completed Florida exposure panels require more thorough cleaning to facilitate proper evaluation, the lower 1/3rd of the panels may be polished with Ford Custom Silicone Gloss cleaner, part number B7AZ-19530-AA, using
39、 a soft. This procedure is only performed after the panels have been previously washed and subjected to water immersion and the “X“-scribe tape pull. Note: The performance rating assigned to a completed 24 mos. Florida exposure panel takes precedence over a panel of the same material exposed for 100
40、0 h per 3.10.10.2. 3.10.10.2 Accelerated Exposure 1000 h (SAE J2020, Fluorescent UV and condensation apparatus) Cycle is four hours condensing humidity at 50 C followed by eight hours fluorescent UV at 70 C. After panels are removed from the apparatus and allowed to dry, an “X“, located at the cente
41、r of the panel and 50 mm from the bottom, is scribed. The “X“ shall be 30 mm height and 20 mm wide. The scribe is then tape-pulled with 3M brand 898-2 tape. There shall be no evidence of loss of adhesion, blistering or cracking either in the paint layer or the primer layer. Dulling, chalking, fading or other color change in the paint layer will not exceed established limits for that paint. 3.10.11 Chip Resistance (SAE J 400) Chipping shall not exceed a 5A SAE rating. Test Method: Strike panels with 0.47 L gravel at room temperature. The panel must be 90 relative to the gravelometers muzzle.
