1、 E ENGINEERING MATERIAL SPECIFICATION ESB-M2P166-A Date Action Revisions Ver. 3 2008 09 11 N-STATUS Replaced by WSS-M2P181-C G. Weber, FNA 1992 06 02 NB00E10043064084 Revised 3.4.3, 3.6.5, 3.6.6 D.M. Keller 1991 04 10 NB00I10043054073 Released GAM D.M. Keller MP Printed copies are uncontrolled Copyr
2、ight 2008, Ford Global Technologies, LLC Page 1 of 6 PAINT PERFORMANCE, ELASTOMERIC, EXTERIOR ESB-M2P166-A NOT TO BE USED FOR NEW DESIGN 1. SCOPE This specification defines the performance requirements for painted body side moldings with adhesives for bonding to automotive exterior surfaces. 2. APPL
3、ICATION This specification was released originally for body side moldings fabricated from thermosetting and thermoplastic flexible materials. 3. REQUIREMENTS 3.1 STATISTICAL PROCESS Suppliers must conform to the requirements of Ford Quality System Standard Q-101. A mutually acceptable Control Plan a
4、s described therein is required for material/source approval. Appropriate statistical tools must be used to analyze process/product data so that variation in the final product is continuously reduced. 3.2 CONDITIONING AND TEST CONDITIONS All test values indicated herein are based on material conditi
5、oned in a controlled atmosphere of 23 +/- 2 C and 50 +/- 5 % relative humidity for not less than 24 h prior to testing and tested under the same conditions unless otherwise specified. 3.3 BONDING SURFACE When these moldings are to be used on surfaces other than exterior grade enameled steel, such as
6、 glass, aluminum, stainless steel or on other coated surfaces, the moldings shall be evaluated on that surface. 3.4 SYSTEM COMPONENTS 3.4.1 Substrate Shall be specified on the engineering drawing. 3.4.2 Substrate Preparation The surface to be painted shall be cleaned by a power wash system or an acc
7、eptable commercial process to remove mold release agents, fingerprints, oils, dirt and any other detrimental surface contamination. Addition of surface enhancements that modify surface tension, surface resistivity or chemical reaction(s) that change surface chemistry shall be specified on the engine
8、ering drawing. E ENGINEERING MATERIAL SPECIFICATION ESB-M2P166-A Printed copies are uncontrolled Copyright 2008, Ford Global Technologies, LLC Page 2 of 6 3.4.3 Film ThicknessAs specified in applicable paint Material Specification 3.4.4 Production Paint All repaired areas must meet the FILM PROPERTI
9、ES and RESISTANCE PROPERTIES of para 3.5 and 3.6. All repair materials and processes used must be approved by the affected product engineering office. 3.5 FILM PROPERTIES The testing is to be conducted on parts prepared with the complete paint system released for the part and applied under productio
10、n conditions. When it is not feasible to test the actual part because of its size or shape, either a similar part or laboratory panels may be substituted. Test panels shall be processed concurrently with parts and shall be representative of the parts with respect to substrate, surface finish, all pa
11、int coatings and respective cure or dry times. 3.5.1 Color and Gloss (FLTM BI 109-01 and BI 110-01) Shall match the approved master sample or the initial sample approved by the Design Center. 3.5.2 Adhesion (FLTM BI 106-01) No more flaking than Fig 1 (less than 5 %). 3.5.3 Flexibility at 23 +/- 2 C
12、No cracking when bent over appropriate mandrel. SUBSTRATE FLEXURAL MODULUS ASTM D 790 METHOD 1 /B MANDREL DIAMETER 350 MPa 13 mm 550 MPa 25 mm 790 MPa 50 mm 1000 MPa 100 mm above 1250 MPa no requirement 3.5.4 Cold Flexibility at - 20 +/- 1 C No cracking when bent over the mandrel listed below. Test
13、Method: Condition the test specimen, 13 x 150 mm minimum size, the appropriate sized supported mandrel and a pair of gloves for a minimum of 4 h at - 20 C. At the end of the conditioning period, open the freezer, put on the gloves, grasp the sample firmly at each end and bend 180 deg around the mand
14、rel (finish side out) as quickly as possible. E ENGINEERING MATERIAL SPECIFICATION ESB-M2P166-A Printed copies are uncontrolled Copyright 2008, Ford Global Technologies, LLC Page 3 of 6 MANDREL DIAMETER SUBSTRATE FLEXURAL MODULUS NON-CLEAR BASE/CLEAR ASTM D 790 METHOD 1 /B COAT COAT 350 MPa 13 mm 25
15、 mm 550 MPa 25 mm 50 mm 790 MPa 50 mm 75 mm 1000 MPa 100 mm 100 mm 3.5.5 Initial Hardness Shall be sufficiently cured at time of packing to withstand normal handling and shipping without damage. Any tackiness or printing resulting from hard pressure with the flat thumb shall be cause for rejection.
16、3.5.6 General The system shall dry/bake to a presentable, serviceable film, showing no craters, pinholes, seediness or abnormal roughness. It shall have good resistance to cleaning and polishing procedures recommended in the owners manual. 3.6 RESISTANCE PROPERTIES AND ADHESION PROPERTIES 3.6.1 Wate
17、r Resistance, min 240 h (FLTM BI 104-01) The following conditions shall be the basis for rejection. . Removal of paint beyond 1.6 mm from any scribe line. . Any evidence of blistering or dulling of the coating. 3.6.2 Thermal Shock Resistance (FLTM BI 107-05) Shall exhibit no blistering or loss of ad
18、hesion when subjected to the following cycles: . 4 h water immersion at 32 +/- 1 C. . 4 h minimum exposure at - 29 C. 3.6.3 Gasoline Resistance (FLTM BO 101-05, add ASTM Reference Fuel D (ASTM D 471) (A) Gloss Colors Shall exhibit no softening, dulling, color transfer, color change, blistering or sh
19、ow any evidence of loss of adhesion. E ENGINEERING MATERIAL SPECIFICATION ESB-M2P166-A Printed copies are uncontrolled Copyright 2008, Ford Global Technologies, LLC Page 4 of 6 (B-J) Gloss Colors Shall exhibit no blistering or show any evidence of loss of adhesion. Slight softening, dulling, or colo
20、r change is acceptable providing that color transfer to a white cloth is no more than rating 4 on the AATCC Chromatic Transference Scale. 3.6.4 Chip Resistance, min 10 cycles (SAE J400) Chipping shall not exceed the appropriate rating listed below for either size or frequency when the finished part
21、is tested 10 cycles per SAE J400. SUBSTRATE FLEXURAL MODULUS ASTM D 790 METHOD 1 /B SAE RATING 350 MPa No chips 550 MPa 7B 790 MPa 4B 1000 MPa 3B above 1250 MPa 2B 3.6.5 Accelerated Weathering: One of the following methods: BC/CC SOLID EMMA (NTW) Weathering in Arizona 500 MJ 250 MJ (SAE J1961, Cycle
22、 1) Xenon Arc Weather-o-meter, min 1000 h 500 h (SAE J1960) Test Acceptance Criteria: The paint surface shall not exhibit coating delamination, cracking, checking, or blistering. The paint surface shall show a minimum degree of fading, chalking, dulling or color change. After examining plaques for s
23、urface degradation test in water immersion per para 3.4.1 for 24 hours. The Florida exposure panel takes precedence over a panel of the same material exposed in either accelerated weathering test. 3.6.6 Exposure Resistance 3.6.6.1 As Received 23 +/-2 C 3.6.6.2 2 weeks at 88 +/-1 C 3.6.6.3 Salt Spray
24、 240 h (ASTM B 117) E ENGINEERING MATERIAL SPECIFICATION ESB-M2P166-A Printed copies are uncontrolled Copyright 2008, Ford Global Technologies, LLC Page 5 of 6 3.6.6.4 5 cycles with each cycle consisting of: . 4 h at 88 +/-1 C . 4 h at 38 +/-1 C and 95 - 100 % RH . 16 h at - 40 +/-1 C . 4 h at 38 +/
25、-1 C and 95 - 100 % RH . 4 h at 88 +/-1 C . 16 h at - 40 +/-1 C 3.6.6.5 2 weeks at 38 +/-1 C and 95 - 100% RH 3.6.6.6 Water Immersion 240 h (FLTM BI 104-01) 3.6.6.7 30 minutes at 121 C Test Method: (Applies to all tests in para 3.6.6) .Prepare panels, 100 x 300 x 0.89 mm per FLTM BI 103-02 using cur
26、rent production primers and enamel. In case of substrates other than CRS, panels should be 100 x 300 mm x typical thickness, painted with the current production paint system. .Cut 250 mm lengths of the molding using sharp cutting tools and methods recommended by the molding supplier. .Bond two 250 m
27、m lengths of the molding to each panel according to the exact application procedure recommended for the adhesive system. .Allow the assemblies to condition 48 h at 23 +/- 2 C. . Expose the assemblies as indicated. .At the end of each exposure period allow the assemblies to condition a minimum of 24
28、h at 23 +/- 2 C prior to testing. .No evidence of cracking, checking, color change, or loss of paint adhesion after exposure. Test adhesion of the film as follows: Cut a 150 mm length of ESF-M3G48 pressure sensitive tape. Apply the tape over the end of the molding, so that at least 50 mm of the tape
29、 is in contact with the surface (see Fig 1) film. Press and firmly rub the tape to the film surface, to insure complete contact. Grab the free end of the tape and pull upwards towards the center of the molding at a moderate speed. Any removal of surface film shall constitute a failure. In addition,
30、scribed adhesion tests shall be conducted per FLTM BI 106-01, Part “B“ on other areas. .Using a sharp, fine toothed band saw or other suitable saw type cutting tool which will not damage areas adjacent to the “cut,“ make 4 cuts through the molding to the base metal panel. One cut, 25 mm from each en
31、d of the molding, and two cuts, 25 mm apart in the center of the panel (see Fig 1). .With suitable fixtures, determine the tensile strength required to remove the three 25 mm sections of molding from the panels at a testing speed of 25 mm/minute. Calculate the kPas based on the bonded area of the sp
32、ecimen (see Fig 1). Tensile Adhesion, min 172 kPa Except no single molding regardless of area shall exhibit less than 3.5 N/mm of length. E ENGINEERING MATERIAL SPECIFICATION ESB-M2P166-A Printed copies are uncontrolled Copyright 2008, Ford Global Technologies, LLC Page 6 of 6 3.7 END LIFTING AND CU
33、RLING, max 13 mm Test Method: A 300 mm length of the molding assembly as supplied shall be exposed on a flat surface liberally dusted with talcum powder to prevent sticking in an air circulating oven for 1/2 h at 121 +/- 1 C. After removal from the oven and cooled at 23 +/- 2 C for 1 h minimum, meas
34、ure the amount of end lifting and curling as shown on Fig 2. 3.8 IMPACT 3.8.1 Normal (23 +/- 2 C), min 1.1 J 3.8.2 Low Temperature (- 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 appear
35、ance within 24 h after testing. Test Method: Sample assemblies prepared per para 3.6.6 shall be impacted using a Gardner Model IG 1120 (or equivalent) tester with a 13 mm diameter hemispherical impact head. The low temperature test shall be conducted after exposure for 4 h minimum at - 29 C and impa
36、cted within 20 s after removal from the low temperature chamber. 3.9 SUPPLIERS RESPONSIBILITY All materials supplied to this specification must be equivalent in all characteristics to the material upon which approval was originally granted. Prior to making any change in the properties, composition,
37、construction, color, processing or labeling of the material originally approved under this specification, whether or not such changes affect the materials ability to meet the specification requirements, the Supplier shall notify Purchasing, Toxicology and the affected Materials Engineering activity
38、of the proposed changes and obtain the written approval of the Materials Engineering activity. Test data, test samples and a new code identification are to be submitted with the request. Substance restrictions imposed by law, regulations or Ford, apply to the materials addressed by this document. Th
39、e restrictions are defined in Engineering Material Specification WSS-M99P9999-A1, unless a different suffix (eg., A2 or A3) is specified on the engineering document for the application. 4. APPROVAL OF MATERIALS This specification is intended to define the performance and/or properties of finished pa
40、rts or systems of combined materials. An Engineering Material Approved Source listing is not applicable for this specification. Product Engineering materials referenced in this document and/or the affected engineering drawing, which require prior Engineering approval, are shown in the Engineering Material Approved Source List under the specification cited.
