1、 ENGINEERING MATERIAL SPECIFICATION Material Name Specification Number Date Action Revisions 2000 09 20 Revis ed Updated A. Cockman 1986 10 28 CAO1 - DR539151 Released Printed copies are uncontrolled Page 1 of 5 Copyright 2000, Ford Global Technologies, Inc. REPAIR SEALER, AIR DRY, ONE COMPONENT - E
2、VA ESB-M4G285-A BASE - CLEAR REPAIR SEALER, AIR DRY, ONE COMPONENT - EVA ESB-M4G285-A2 BASE - BLACK 1. SCOPE The material defined by this specification is a one component, air curing EVA base sealer specifi ed as an after seal adhesive sealant. 2. APPLICATION This specification was released original
3、ly for material used to seal and repair defects such as pinholes and skips in vinyl plastisol, body seam sealers and solder joints. The sealer is also for repai r of those body seams, such as deck lid drain trough and door facings. This sealer is used to improve water test results. 3. REQUIREMENTS M
4、aterial specification requirements are to be used for initial qualification of materials. 3.1 QUALITY SYSTEM REQUIREMENTS Material suppliers and part producers must conform to the Companys Quality System Requirements. 3.2 INFRARED SPECTROPHOTOMETRY AND/OR THERMAL ANALYSIS IR spectra and thermograms
5、established for initial approval shall constitute the reference standard and shall be kept on file at the designated material laboratory. All samples shall produce IR spectra and thermograms that correspond to the reference standard when tested under the same conditions. 3.3 CONDITIONING AND TEST CO
6、NDITIONS All te st values indicated herein are based on material conditioned 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. ENGINEERING MATERIAL SPECIFICATION ESB-M4G
7、285-A/A2 Page 2 of 5 Copyright 2000, Ford Global Technologies, Inc. 3.4 COLOR ESB - M4G285 - A Clear ESB - M4G185 - A2 Black 3.5 SOLIDS, min 40% (ASTM D 2834, except heat for 3 h at 102 +/ - 3 C) 3.6 WEIGHT PER VOLUME .83 - .89 kg/L (FLTM BV 3 - 1, 276 kPa line pressure, 1.85 mm orifice) 3.7 CURE RA
8、TE A 3.2 x 13 x 150 mm bead shall be tack free and completely cured in 1 h at 23 +/ - 2 C. Test Method: Apply a 6.4 mm diameter bead of sealant along the bottom of a 13 x 150 mm enameled steel U - channel. Immediately after application, remove the excess sealant with a scraper to obtain a uniform 3.
9、2 x 13 mm mass of sealant in the channel. Condition for 24 h at 23 +/ - 2 C and 45 +/ - 5% relative humidity and then examine. Retain sample for test in para 3.9. 3.8 VOLUME SHRINKAGE 37% Test Method: Apply a semicircular bead o f material 14.2 mm radius down the center of a 101 x 25 x .91 mm CRLC s
10、teel panel 1.06 mm thick. Cut off the bead on both ends to provide the required 50 mm length, and specifically to eliminate “necking“ in the test bead. Determine the normal volume by water displacement. Cure the specimens in open air, temperatures of 23 +/ - 2 C for 72 hrs. Specimens are to be cured
11、 in a horizontal position. Calculate the volume decrease as percentage of the original volume as follows: V1 - V2 x 100 = Percent Volum e V1 - Vc Vc - Volume of steel coupon. V1 - Volume of original material and coupon V2 - Volume of coupon and material after cure. ENGINEERING MATERIAL SPECIFICATION
12、 ESB-M4G285-A/A2 Page 3 of 5 Copyright 2000, Ford Global Technologies, Inc. 3.10 COLD FLEXIBILITY No cracking Test Method: Apply a 3.2 mm diameter x 150 mm long bead of sealant to a strip o f aluminum foil. Condition for 24 h at 23 +/ - 2 C. Expose to a temperature of - 23 C for 4 h and bend 180 aro
13、und a temperature conditioned 3.2 mm mandrel. 3.11 WEATHERABILITY No staining, cracking, blistering, pinholing or other deleterious effects. Test Method: Apply a 3.2 mm diameter bead of sealant 150 mm long to an enameled 75 x 225 mm steel panel. Condition for 24 h at 23 +/ - 2 C. Expose in an QUV ca
14、binet and examine after 500 h. 3.12 TENSILE SHEAR ADHESION, min 100% Cohesive Failure 3.12.1 Normal 7 days 690 kPa 14 days 690 kPa 3.12.2 Aged 100% Cohesive Failure 7 days at 82 +/ - 1 C 690 kPa 500 h QUV 690 kPa Test Method: Apply sufficient sealant to 6.4 x 25 x 100 mm glass plates to provide a bo
15、nd area of 323 mm by 2.5 mm thickness when mated with 0.89 x 25 x 75 mm enameled steel panel. Normal adhesive assemblies shall be conditioned for the specified times at 23 +/ - 2 C. Aged test assemblies shall be conditioned for 7 days minimum prior to environm ental exposure. Pull the bonded assembl
16、ies in a testing machine having a jaw separation rate of 25 mm/min. 3.13 FLOW, max 64 mm Test Method: The 6.4 mm groove in the flow rate fixture (Figure 1) shall be blocked 100 mm from the top edge. Fill t he upper portion of the groove with sealer to a depth of 3.2 mm. Remove the block and measure
17、the flow rate, when exposed for 10 min at 23 +/ - 2 C. ENGINEERING MATERIAL SPECIFICATION ESB-M4G285-A/A2 Page 4 of 5 Copyright 2000, Ford Global Technologies, Inc. 3.14 QUALITY Shall be a smooth, homogeneous mixture free from foreign materials and properties de trimental to normal production operat
18、ions. 3.15 FUNCTIONAL APPROVAL Materials being evaluated for initial specification shall be subjected to a production trial. Functional trial results should be available to Design and Materials Engineering prior to ma terial approval and release. 3.16 SUPPLIERS RESPONSIBILITY All materials supplied
19、to this specification must be equivalent in all characteristics to the material upon which approval was originally granted. Prior to making any changes to the material o riginally approved under this specification, whether or not such changes affect the materials ability to meet the specification re
20、quirements, the Supplier shall notify the affected Purchasing, and Materials Engineering activities (with reasons) of the pro posed changes. Upon notification of the Company, further instructions will be provided. Note: Suppliers should be prepared to provide test data and samples demonstrating comp
21、liance to this specification, if requested. Substance restrictions imposed by regulations or Company direction applies to the materials addressed by this document. The restrictions are identified in Restricted Substance Management Standard WSS - M99P9999 - A1. 4. APPROVAL OF MATERIALS Materials defi
22、ned by this specification for dire ct supply to the Company must have prior approval. Certain materials subcontracted by part suppliers may also require prior approval. These include materials critical to the Companys business for regulatory, safety, environmental or compatibility requir ements or c
23、ontractual agreements. Suppliers desiring approval of their materials shall first obtain an expression of interest from Purchasing, Design or Materials Engineering activity. Upon request, the Supplier shall submit a completed copy of their lab oratory test reports, signed by a qualified and authorized representative of the test facility, demonstrating full compliance with all the requirements of this specification. ENGINEERING MATERIAL SPECIFICATION ESB-M4G285-A/A2 Page 5 of 5 Copyright 2000, Ford Global Technologies, Inc. FIGURE 1 FLOW TEST FIXTURE
