1、 ENGINEERING MATERIAL SPECIFICATION Date Action Revisions Rev 02 2012 05 14 N Status No usage or replacement N. Benipal, NA 2008 02 28 Revised Inserted 3.0; Deleted 3.8 & 4 1981 11 11 Released B2D-5426/CTL1-AF-591450-1 Controlled document at www.MATS Copyright 2012, Ford Global Technologies, LLC Pag
2、e 1 of 7 PRIMER SURFACER, MODIFIED POLYESTER - LOW VOLATILE ESB-M6J141-A ORGANIC CONTENT - TAUPE NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is a polyester primer surfacer, modified with either epoxy or acrylic resins, possessing good gloss, enamel holdout, and
3、corrosion resistance. It is formulated to cure at 135 C minimum metal temperature and has a low V.O.C. (Volatile Organic Content) to aid assembly plant compliance with governmental clean air regulations. The material contains rust inhibitive pigments to provide maximum corrosion resistance in critic
4、al areas. Application is usually by high efficiency electrostatic equipment. 2. APPLICATION This specification was originally released as a primer-surfacer for metal substrates and as a guidecoat over currently approved cathodic electrocoat primer, both conforming to ESB-M2P4, and primed plastic sub
5、strates conforming to ESB-M2P7-B1. Automotive exterior baking enamels will be applied over this primer in exterior body applications. 3. REQUIREMENTS Tests shall be made on the basis of comparison with approved production material applied and tested under identical conditions. In the event that both
6、 the sample under test and the control material fail any requirement, that test shall be repeated. 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). 3.1 COMPOSITION 3.
7、1.1 Volatile Organic Compounds (V.0.C.), max 3.8 lb/gal (0.5 (ASTM 2369-73 except bake schedule kg/L) as prayed is 60 min at 110 C) 3.1.2 Toxicity Shall be nontoxic and shall not cause skin rash or irritation (dermatitis) to exposed handlers in normal production operations. Benzene and chlorinated h
8、ydrocarbon solvents are considered toxic and their use is strictly prohibited in compounding material to this specification. ENGINEERING MATERIAL SPECIFICATION ESB-M6J141-A Copyright 2012, Ford Global Technologies, LLC Page 2 of 7 3.2 PHYSICAL PROPERTIES 3.2.1 Stability (FLTM BI 102-03) Heat Stabili
9、ty Shall not jell, settle hard or increase viscosity in excess of 10 s. Room Temperature No hard settling after 16 h with Stability test sample reduced to spray viscosity with the suppliers recommended solvent or blend. 3.2.2 Electrical Properties Suitable to permit application at high transfer effi
10、ciencies using electrostatic equipment. 3.3 PREPARATION OF TEST PANELS Prepare test panels per FLTM BI 103-02, Method “C“, using the viscosity specified by the supplier and a dry film build of 0.00075 in (19 m). Unpolished cold rolled steel, PTQ or Parker. ESB-M1A62 galvanized steel. Bimetallic coac
11、h joint panels, salt spray only, para 3.6.3. Exterior thermoplastic and thermosetting plastic parts primed to conform to ESB-M2P7-B1. All metallic substrates are to be zinc phosphated per Process Standard PL 53-33 and conform to the requirements of ESB-M3P1-A. All candidate primers shall be tested d
12、irectly over the above substrates as a body primer and as a guidecoat directly over an approved current production electrocoat primer per FLTM BI 120-01 over the same metal substrates or plastic substrates primed to ESB-M2P7-B1 both with and without electrocoat bake. All submissions will be tested a
13、t both maximum and minimum bake cycles (para 3.3.3). When used as a guidecoat, this material will be applied at a dry film thickness of 0.0006 +/- 0.0001 in (15 +/- 2.0 m) over baked, unsanded electrocoat, or over baked, unsanded primed plastic substrates that meet ESB-M2P7-B1. Black approved curren
14、t production body exterior enamel will be used for Water Immersion (para 3.6.4), Condensing Humidity (para 3.6.5), and Holdout (para 3.4.4) evaluations over unsanded primer. ENGINEERING MATERIAL SPECIFICATION ESB-M6J141-A Copyright 2012, Ford Global Technologies, LLC Page 3 of 7 3.3.1 Primer-Enamel
15、System (unsanded primer) Black Enamel Holdout 3.4.4 Water Immersion 3.6.4 Humidity 3.6.5 White Enamel All other tests Bake the enamel10 min at 129 C metal temperature (17 min at 129 C laboratory oven). 3.3.2 Primer Only - Salt Spray only para 3.6.2 Spray prime to a dry film thickness of 0.00075 in (
16、19 m) and over panels electrocoated per FLTM BI 120-01, using the metal substrates specified in para 3.3. Bake at both cycles shown in para 3.3.3. 3.3.3 Baking The material shall pass all requirements when baked at both the following schedules: Metal Temperature Laboratory Oven* Bake, min 8 min at 1
17、35 C 15 min at 135 C Bake, max 10 min at 163 C 30 min at 163 C * As specified in FLTM BI 103-02. 3.3.4 Bake Window The material must meet the gravelometer resistance of para 3.6.1 and the salt spray resistance of para 3.6.2 when baked 15 min at 121 C and at 177 C. This requirement is in addition to
18、those in para 3.3.3. 3.3.5 Electrocoat - Guidecoat System Apply a 0.0006 +/- 0.0001 in (15 +/- 2.0 m) dry film of a currently approved production electrocoat primerto the substrates mentione in para 3.3. Bake 10 min at 182 C metal temperature (20 min at 182 C laboratory oven). Apply 0.0006 +/- 0.000
19、1 in (15 +/- 2.0 m) dry film of the material and bake separate sets of panels at maximum and minimum cycles as shown in para 3.3.3. Apply and bake as in para 3.3.1. Reinforced polyester plastic substrates must receive the electrocoat bake prior to guidecoat application. 3.4 APPEARANCE After preparin
20、g panels of the material under test and production primer according to para 3.3.1, the primer under test shall be equal to or better than current approved production materials when tested under identical conditions for the following properties. 3.4.1 Color Taupe (masters ESB-M6J119-B dated 8-31-73 o
21、n file at Body Materials Engineering). ENGINEERING MATERIAL SPECIFICATION ESB-M6J141-A Copyright 2012, Ford Global Technologies, LLC Page 4 of 7 3.4.2 Gloss, min 65 (FLTM BI 110-01, 60 Glossmeter) On panels baked at 15 min at 135 C. 3.4.3 Leveling The primer film shall level with a minimum of orange
22、 peel. The surface of the material under test shall be equal to or better than current approved production material for smoothness when applied and baked under identical conditions. 3.4.4 Holdout There shall be no evidence of dulling or strike-in when enamel color coat is applied over sanded or unsa
23、nded primer surfacer, and no difference in gloss of the color coat between sanded and unsanded primer. There shall be no prominence of sand scratches. Tests shall be made at both maximum and minimum bake cycles. 3.5 FILM PROPERTIES 3.5.1 Dry Sanding Characteristics The primer, when applied and baked
24、 at both maximum and minimum cycles as outlined in para 3.3.3 shall dry sand (using a new sheet of 320 grit non-stearate filled paper for each panel) smoothly without clogging the paper and with a minimum of sand scratches. The material shall be equivalent in all respects to current approved product
25、ion primer applied and tested under identical conditions. 3.5.2 Adhesion (FLTM BI 106-01) Test material versus current approved production primer. 3.5.2.1 Enamel to Primer Prepare panels per para 3.3.1. Adhesion of current body exterior quality production enamel to unsanded primer shall be satisfact
26、ory and equal to or better than current approved primer with no chipping, flaking or peeling. 3.5.2.2 Primer to Metal Prepare panels per para 3.3.2. Adhesion shall be satisfactory with no chipping, and equal to or better than current approved primer. 3.5.2.3 Primer to Electrocoat Prepare panels per
27、para 3.3.5. Adhesion shall be satisfactory with no chipping, and equal to or better than current approved primer. ENGINEERING MATERIAL SPECIFICATION ESB-M6J141-A Copyright 2012, Ford Global Technologies, LLC Page 5 of 7 3.5.2.4 Primer to Conductive Primer Prepare panels per para 3.3.1 and 3.3.3 (Ele
28、ctrocoat bake only) of the preprimed plastic substrates specified in para 3.3. Adhesion shall be satisfactory with no chipping and equal to or better than the currently approved production primer. 3.6 RESISTANCE PROPERTIES 3.6.1 Chip Resistance (FLTM BI 007-01) Prepare panels per para 3.3.1, 3.3.4 a
29、nd 3.3.5 and test per FLTM BI 007-01 using current approved production primer and enamel as control. Chipping shall be no greater for the test material than for the current approved production primer and shall not exceed Figure #3. 3.6.2 Salt Spray 240 h (FLTM BI 103-01) No failure in the specified
30、times by blistering, rusting, or more than 1/8 in (3 mm) rust or blister creepage from a line scribed to bare metal on metal panels only prepared according to para 3.3. 3.6.3 Bimetallic Salt Spray Corrosion (FLTM BI 103-01) No more than 1/8 in (3 mm) rust, blister creepage, or loss of adhesion after
31、 (1) 240 h at the scribe, and (2) 750 h on the CRLC steel adjacent to the joint. FLTM BI 103-02, Method “C“ and BI 20-1 with the following exceptions: The test panels shall consist of two 4 x 12 in (100 x 300 mm) clean unphosphated panels (one polished CRLC steel and one minimum spangle temper rolle
32、d galvanized steel - ESB-M1A62 type) as described in FLTM BI 103-02, flanged and spot welded together along the 12 in (300 mm) dimensions to form a coach joint. The inside radius shall be 1/8 in (3 mm) and the flange shall be 5/8 in (16 mm) wide with spot welds spaced every 2 in (50 mm). The composi
33、te coach joint panels shall be zinc phosphated, after assembly, per ESB-M3P1 and spray primed per para 3.3.1 and baked per para 3.3.3. Topcoat with a 0.0018 +/- 0.0005 in (46 +/- 13 m) of current approved white production enamel per para 3.3.1 and baked 10 min at 129 C metal temperature (17 min at 1
34、29 C laboratory oven). Scribe through the painted surface to base metal across both substrates at right angles to and into the joint, 2 in (50 mm) from each end of the panel. Age 72 h at 23 +/- 2 C and test per FLTM BI 103-01 for the number of hours indicated. 3.6.4 Water Immersion, min 500 h metal
35、panels (FLTM BI 104-01) 240 h plastic panels Panels are prepared according to para 3.3.1 and 3.3.5. No blistering or loss of gloss. ENGINEERING MATERIAL SPECIFICATION ESB-M6J141-A Copyright 2012, Ford Global Technologies, LLC Page 6 of 7 3.6.5 Condensing Humidity, min 240 h metal panels only (FLTM B
36、I 104-02, Procedure “A“) Panels are prepared according to para 3.3.1 and 3.3.5. No blistering or loss of gloss. 3.6.6 Florida Exposure Panels prepared as in para 3.3.1 and 3.3.5, scribed with an “X“ to bare substrate and exposed in the Miami, Florida ambient area at 5 facing south for 12 months shal
37、l show no blistering, peeling, or visible rusting along the scribe marks more than 1/8 in (3 mm) total width. 3.6.7 Chalk Resistance Panels are prepared according to para 3.3.2 (electrocoat not required) and para 3.3.3. Topcoat with 0.001 +/-0.0002 in (0.025 +/- 0.005 mm) of clear production to with
38、out U.V. absorber (available from BEPE) and bake 17 min at Expose as in para 3.6.6 for 2, 3, 4, and 5 months at variable angles (schedule available at BEPE). Place the exposed panels in a condensing humidity cabinet (FLTM BI 104-02 Procedure “A“) for 2 h. Remove and scribe a one inch “X“ immediately
39、, blot dry, and apply tape (FLTM BI 106-01). When the tape is removed, no clear coat removal is permitted greater than that exhibited by the sample originally approved by BEPE from that supplier. Control ESB-M6J141-A must be run concurrently. 3.7 PRODUCTION TRIAL Final approval of all functional and
40、 sanding characteristics shall be made by the manufacturing division using the material or painted part on the basis of a shop trial under production conditions (Form 371 Report). 5. GENERAL INFORMATION The information given below is provided for clarification and assistance in meeting the requireme
41、nts for this specification. 5.1 FLASH POINT, min 4.4 C (ASTM D 92) 5.2 NON-VOLATILE. Min 69% (FLTM BI 102-01) 5.3 VOLUME SOLIDS, min 55% (FLTM BI 102-05) 5.4 FLAMMABILITY This material represents a potential fire hazard. The Manufacturing Engineering Department shall notify both the Plant Security a
42、nd the Safety Units of its presence in the Plant to secure that proper fire precautions are provided. The location in which it is used or stored shall be included in the notifications. ENGINEERING MATERIAL SPECIFICATION ESB-M6J141-A Copyright 2012, Ford Global Technologies, LLC Page 7 of 7 5.5 PAINT
43、 ADHESION TEST-ENAMEL TO PRIMER This test, method is the same as AADs I.C.A. 5, and is viewed by BEPE as desirable, but not as a requirement of this specification. It is basically the same as FLTM BI 106-01 Part B, but with the following exceptions: Primer Bake 60 min at 194 C (380 F) ambient Enamel
44、 Bake 17 min at 118 C (245 F) ambient Enamel Colors White, Black, and Argent Metallic Acceptance Criteria Low enamel bake - 5% enamel loss, max High enamel bake - No enamel loss 5.6 PANEL INFORMATION 5.6.1 Standard, unpolished, bimetallic coach joint, and galvanized steel test panels are available f
45、rom the Parker Co., 322 Main Street, Morenci, Michigan 49256. 5.6.2 Steel for PTQ test panels is periodically selected by the BEPE Materials and Corrosion Protection Engineering Department from coils representative of production steel employed in Ford production body panels. This steel is specified
46、for many primer salt spray tests and may be procured from the Materials and Corrosion Protection Engineering Department in panel form either phosphated or oiled. 5.6.3 Plastic Substrates ESB-M3D105-B - Type II Polyester Resin - Fiberglass Reinforced - Matched Metal Die Molding Compound ESB-M3D127-A
47、- Polyester Resin, Glass Reinforced - Injection Molding Compound ESB-M4D353-A through A6 - Nylon (Type 6/6), Mineral filled 5.6.4 Primers for Plastic Substrates ESB-M6J106 - Primer Surfacer, Fiberglass Reinforced Polyester Plastic ESB-M6J127 - Primer Surfacer, Conductive Thermoplastic Substrates 5.6
48、.5 Primer for Metal Substrates ESB-M64J19 - Primer, Waterborne Cationic Electrocoat 5.6.6 Topcoats ESB-M32J101 - Enamel, Acrylic, Exterior Low and Medium Gloss ESB-M32J105 - Enamel, Acrylic, Exterior Basecoat/Clear Coat High Gloss ESB-M50J100 - Enamel, Acrylic (NAD) Exterior Body Quality ESB-M50J103 - Enamel, Acrylic (NAD) Exterior Body Quality ESB-M50J107 - Enamel, Acrylic Intermediate Solids (NAD) Exterior Body Quality
