1、 ENGINEERING MATERIAL SPECIFICATION Date Release No. Revision Rev. 3 2014 10 17 N Status A2/3/4 No replacement named L. Sinclair, NA 2011 07 13 Revised Odor Requirements added W. Janitschke, EU 1987-12-18 SM/EQ1579 TP Release Controlled document at www.MATS Copyright 2014, Ford Global Technologies,
2、LLC Page 1 of 6 SEALER, PVC, PRIMER OVEN CURING, PAINTABLE ESK-M4G297-A SEALER, PVC, PRIMER OVEN CURING, PAINTABLE NOT FOR NEW DESIGN ESK-M4G297-A2 SEALER, PVC, PRIMER OVEN CURING, PAINTABLE NOT FOR NEW DESIGN ESK-M4G297-A3 SEALER, PVC, PRIMER OVEN CURING, PAINTABLE NOT FOR NEW DESIGN ESK-M4G297-A4
3、1. SCOPE The material defined by this specification is a solvent release, heat curing, stone peck resistant PVC sealer for exterior body areas. 2. APPLICATION This specification was release originally for material used as a stone peck protective coating for wheel house lip. The material is applied b
4、y a foam roller or airless spray on baked electrocoat in a wet film thickness of approx. 160 - 320 micrometer wet on wet with spray primer. 3. REQUIREMENTS 3.1 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and part producers must conform to the Companys Standard Requirements For
5、Production Materials (WSS-M99P1111-A). 3.2 TEST PANEL PREPARATION Use 300 x 100 x 0.8 - 0.9 mm E-coated test panels according to FLTM BI 120-01. The sealer must be applied on the cured E-coated test panel within 30 minutes after oven curing. 3.3 COLOR grey 3.4 SOLIDS 97.0 min (FLTM BV 150-10) 3.5 AS
6、H 28.0 max (FLTM BV 150-10) 3.6 FLASH POINT 100 C min (ASTM D 93, Method A) Note: In case testing at higher temperatures is not feasible because of gelling of test material, the supplier must certify in writing that each separate volatile ingredient has a flash point above 100 C. ENGINEERING MATERIA
7、L SPECIFICATION ESK-M4G297-A/A2/A3/A4 Copyright 2011, Ford Global Technologies, LLC Page 2 of 6 3.7 DENSITY AT 20 C 1.29 g/cm3 max (ASTM D 1475) 3.8 VISCOSITY AT 20 C (Brookfield viscometer type RVT/D, No. 6 spindle) Test Method 1. Condition material under test to 20 C. 2. Stir material for 1 min by
8、 spatula. 3. Let the material rest for 30 min. 4. Insert spindle into material and start measuring with undisturbed material at a frequency of 2.5/min; measuring time 3 min. 5. Continue measuring in the same way at frequencies of 5.0/min and 10.0/min. 3.8.1 As received, Pas +/- 10% A A2 A3 A4 at 2.5
9、/min 25.0 60.0 100.0 130.0 at 5.0/min 19.0 40.0 60.0 80.0 at 10.0/min 15.0 30.0 40.0 5.0 3.8.2 After Aging, Pas +/- 20 % (120 h at 35 +/- 2 C) at 2,5/min 33.0 75.0 140.0 220.0 at 5,0/min 26.0 55.0 85.0 130.0 at 10,0/min 21.0 40.0 65.0 100.0 3.9 SURFACE CONDITION AFTER AGING The material shall be dry
10、 to the touch after cooling to 23 +/- 2 C. It shall be free from cracks or bubbles and shall show a uniform closed paint film without staining or discolouration. After bending 90 deg around a mandrel of 100 mm dia. within 2 s (see FLTM BV 153-4) there shall be no evidence of chipping or loss of adhe
11、sion between the various layers. Test Method 1. Test panels per para 3.2., shall be coated with the material under test in such a manner (template 30 mm wide) that after curing a dry coating thickness of 150 - 300 micrometer is obtained. 2. After 10 min at 23 +/- 2 C, coat specimens wet on wet with
12、production epoxy spray primer, to a dry film thickness of 25 - 35 micrometer. 3. After 10 min at 23 +/- 2 C, cure specimens separately according to FLTM BV 150-5, for each applicable region: a) Min. Curing Cycle b) Max. Curing Cycle. 4. After 10 min at 23 +/- 2 C, spray separate specimens with light
13、 colored standard and metallic top coat enamel to a coating thickness of 30 - 40 micrometer. 5. After 10 min at 23 +/- 2 C, cure specimens separately according to FLTM BV 150-5, for each applicable region: a) Min. Curing Cycle b) Max. Curing Cycle.ENGINEERING MATERIAL SPECIFICATION ESK-M4G297-A/A2/A
14、3/A4 Copyright 2011, Ford Global Technologies, LLC Page 3 of 6 6. Condition for 2 h at 23 +/- 2 C and expose in mechanical convection oven maintained at 80 +/- 2 C for 120 h. 7. Test and examine after 24 h at 23 +/- 2 C. 3.10 FLEXIBILITY AFTER AGING No cracking, no (FLTM BV 153-2, Method C, except t
15、est chipping or loss of panels per 3.2., dry coating thickness adhesion 160 - 300 micrometer, curing cycle table 2, 2 h at 23 +/- 2 C, mandrel dia. 100 mm) 3.11 ADHESION AFTER HEAT AGING No cracking, no (FLTM BV 153-3, Method B, except test chipping or loss of panels per 3.2., dry coat thickness 160
16、 - 300 micrometer adhesion 14 d aging at 80 +/- 2 C, 2 h at 23 +/- 2 C, mandrel dia. 100 mm) 3.12 ADHESION The material at all ranges of coating thickness must not be peeled-off in a coherent film. Test Method 1. Coat test panels from para 3.2. so that after the: (a) min curing cycle, (b) max curing
17、 cycle according to FLTM BV 150-5, T for each applicable region, a dry coating thickness of 0.5 mm beginning at one edge of the test panel and tapering to zero at the other is obtained. 2. After 24 h at 23 +/- 2 C make two cuts through the coating along the 300 mm length of the test panel and 20 mm
18、apart and try to peel-off coating starting at the edge with the lowest film thickness. 3.13 ABRASION RESISTANCE There shall be no exposed metal area showing after a) 100 Liter b) 250 Liter gravel impact. No loss of adhesion on and around the area of stone impact. Test Method 1. Test panels (para 3.2
19、.) shall be coated with the material under test in such a manner (template or foam roller) that after curing a dry coating thickness of 1) 160 - 200, b) 300 - 350 micrometre is obtained. 2. After 10 min at 23 +/- 2 C cure test specimens separately, according to FLTM BV 150-5, for each applicable reg
20、ion: a) min. curing cycle. b) max. curing cycle. 3. Condition for 2 h at 23 +/- 2 C and expose in mechanical convection oven maintained at 70 +/- 2 C for 120 hours. 4. After conditioning for 24 h at 23 +/- 2 C determine the abrasion resistance according to ASTM D 968, except I.D. of tube 25 mm and a
21、t a gravel throughput rate of 30 - 40 Litres/h. For each specimen a 5 Litres volume of fresh gravel shall be used. 5. Check for abrasion resistance and loss of adhesion after a) 100 Litre (dry coating thickness of 160 - 200 micrometer) b) 250 Litre (dry coating thickness of 300 - 350 micrometer) ENG
22、INEERING MATERIAL SPECIFICATION ESK-M4G297-A/A2/A3/A4 Copyright 2011, Ford Global Technologies, LLC Page 4 of 6 gravel impact. Continue abrasion test until exposure of metal area and again check for loss of adhesion. Gravel: Type “GABBRO“ grain size 5-8 mm Supply Source: ODENWALDER HARTSTEIN INDUSTR
23、IE GMBH Erbacher Str. 62 D - 6101 Rossdorf 3.14 CORROSION RESISTANCE The material shall protect the test panel from corrosion for a salt spray exposure period of 500 hours. It shall show no expansion, flaking or loss of abrasion resistance. No loss of adhesion on and around the area of stone impact.
24、 Test Method 1. Prepare test specimens in accordance with para 3.13, sections 1-3. 2. After conditioning for 24 hours at 23 +/- 2 C expose specimens for 500 hours to a salt spray fog according to ASTM B 117. 3. After conditioning for 72 h at 23 +/- 2 C determine abrasion resistance as specified unde
25、r para 3.13 and examine test panels for evidence of corrosion. Disregard the area 5 mm from the edges. 3.15 FLOW RATE 2 mm max (FLTM BV 153-1, Method A, except test panel per para 3.2., wet film thickness 280-300 micrometer, template 30 mm width, 270 mm length of sealer bead, 30 min at 120 +/- 2 C).
26、 3.16 COMPATIBILITY WITH PRODUCTION PAINTS No tackiness of material surface, no cracking or blistering. The paint shall cover the sealer satisfactorily without evidence of discolouration or staining. 3.16.1 Wetability and Staining Test Method 1. Specimens preparation according to clause 3.13, test m
27、ethod, section 1, test material width 30-35 mm. 2. Proceed as outlined under FLTM BV 153-8, Method A, section 2-6, except use lightest and darkest solid colour and metallic basecoat/clearcoat. 3. After 72 h at 23 +/- 2 C mask one half of the sealer ribbon and expose for 240 h in the Fluorescent Sunl
28、amp Cabinet (FLTM EU-BU 52-2). ENGINEERING MATERIAL SPECIFICATION ESK-M4G297-A/A2/A3/A4 Copyright 2011, Ford Global Technologies, LLC Page 5 of 6 3.16.2 Determination of Discoloration after Aging None Test Method 1. Specimens preparation according to 3.16.1, section 1 and 2. 2. After 24 h at 23 +/-
29、2 C store separate assemblies in the darkness for 240 h at 40 +/- 2 C in a mechanical convection oven. 3.16.3 Determination of Yellowing None (FLTM BV 153-12) 3.16.4 Resistance to Weathering No discoloration Test Method 1. Specimens preparation according to 3.16.1, section 1 and 2. 2. Expose test sp
30、ecimens in the Miami/Florida area for 6 months and 1 year at 5 deg to the south. 3. Prior to examination clean specimens using soap and water. 3.17 TEMPERATURE CYCLING TEST No chipping, no flaking, no loss of Test Method adhesion 1. Specimens preparation according to clause 3.16.1, test method, sect
31、ion 1 and 2. 2. After conditioning 72 h at 23 +/- 2C expose specimens three times to the following cycle. 3 h at 80 +/- 2 C 1 h at 23 +/- 2 C 3 h at -40 +/- 1 C 1 h at 23 +/- 2 C 16 h at 38 +/- 2 C and 98 +/- 2 % RH 3. After 24 h at 23 +/- 2 C bend 90 deg around a mandrel of 100 mm dia. within 2 s (
32、FLTM BV 153-4). 3.18 ABRASIVES The material shall contain no abrasive agents. Test Method Dilute a one gram sample of material under test with three gram toluene and mix thoroughly. Rub a portion of the diluted material approx. 10 times between two pieces of flat, clean plate glass. The appearance o
33、f scratches on the glass plates shall be considered failure. 3.19 SPRAYABILITY The material shall be a smooth homogeneous mixture, free from foreign material and suitable for use in airless spray equipment. It shall spray evenly and rapidly with no tip clogging or fluctuations in the spray pattern a
34、nd with a minimum spray back and fogging. ENGINEERING MATERIAL SPECIFICATION ESK-M4G297-A/A2/A3/A4 Copyright 2011, Ford Global Technologies, LLC Page 6 of 6 3.20 QUALITY The material shall be of uniform quality, free from foreign material and properties detrimental to normal production use. 3.21 ODO
35、R Rating 3 max (FLTM BO 131-03, cured material per min cycle as in FLTM BV 150-05, for the individual region, for interior application only) 4. GENERAL INFORMATION This information given below is provided for clarification and assistance in meeting the requirements of this specification. Contact fo
36、r questions concerning Engineering Material Specifications. 4.1 STORAGE STABILITY (from date of receipt at Ford Motor Company) The material must be stable for 3 month, when stored in sealed unopened drums out of direct sunlight at ambient temperatures between 5 C and 32 C. 5. SUMMARY OF REVISIONS 2011 07 13 Added Odor Requirement. Editorial changes for clarification.
