1、 ENGINEERING MATERIAL SPECIFICATION Material Name Specification Number Date Action Revisions 2015 02 03 N Status No replacement named L. Sinclair, NA 2003 02 27 Revised Para 3.0 inserted; Para 3.1, 3.2, 3.3, 3.8, 3.9, 3.10, 4 deleted 1996 01 17 Activated W. Curtiss G. Molnar Page 1 of 6 Copyright 20
2、15, Ford Global Technologies, Inc. ADHESIVE, WATERBORNE, RUBBER BASED, WSS-M2G355-B ONE COMPONENT, ROOM TEMPERATURE CURING NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is a pumpable one component, waterborne, rubber based, room temperature curing adhesive. 2. APP
3、LICATION This specification was originally released to bond a rigid foam headliner, backed with fiberglass scrim, to the roof interior sheet metal. The roof sheet metal can have varying degrees of phosphate, electrocoat, body primer, and/or topcoat overspray. Additionally, this material is applied a
4、nd cures in a room temperature environment. This specification replaces ESB-M2G355-A. 3. REQUIREMENTS 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 UNCURED ADH
5、ESIVE PROPERTIES 3.4.1 Viscosity (FLTM BV 103-01, 2.64mm orifice, 140 kPa air pressure) . As received . 72 h at 54 +/- 3 C . 90 days at 23 +/- 2 C The viscosity tolerance for any one supplier shall be +/- 10s based on the viscosity of the original approved production sample. Refer to para 5.5. 3.4.2
6、 Solids, min 70 % (ASTM D 2834, except heat for 3 h at 100 +/- 3 C in a mechanical convection oven) ENGINEERING MATERIAL SPECIFICATION WSS-M2G355-B Page 2 of 6 Copyright 2015, Ford Global Technologies, Inc. 3.4.3 Ash, Based on Solids Weight, max 50% (ISO 3541, Method A, 760 +/- 30 C) 3.4.4 Weight pe
7、r Volume (ASTM D 816) The weight tolerance for any one supplier shall be +/- 0.02 kg/L, based on the weight of the original approved production sample. Refer to para 5.4. 3.4.5 Sag, max 3 mm (FLTM BV 118-01, with exceptions) Test Method: . Apply a 76 mm long right triangular shaped bead of material
8、6 mm wide at the base and 15 mm high on a E-coated panel prepared per para 5.2.3. . Place the panel at a 60 angle from the horizontal and let it air dry for 30 minutes at room temperature then measure the sag. 3.4.6 Pressure Stability The material shall not (SAE J1864) cake or harden 3.4.7 Storage S
9、tability 3.4.7.1 Storage, Shelf Life and Conditioning Shall be stored at ambient room temperature below 40 C, away from all sources of heat, such as ovens, direct sunlight, etc. Shall not be stored outside. Under these storage conditions, the maximum shelf life to the material, from date of shipment
10、 from the supplier, shall be 3 months. The supplier must label each container to indicate the expiration date of the materials, and production usage beyond the expiration date is not permitted. When stored a temperatures below 23 C, it must be conditioned at room temperature for 72 h prior to use. 3
11、.4.7.2 Freeze Sensitivity Test product to freeze/thaw test (3 cycles of 16 h at - 30 C and 8 h at 25 C). Any products that are found to be not workable or show degradation of adhesive properties after completion of the test must be shipped and stored in a manner to prevent freezing, and drums must b
12、e labeled with a freeze sensitive indicator. ENGINEERING MATERIAL SPECIFICATION WSS-M2G355-B Page 3 of 6 Copyright 2015, Ford Global Technologies, Inc. 3.4.8 Odor The material must not have a toxic or noxious odor. After curing, the material must be relatively non-odorous. 3.4.9 Fogging (SAE J1756,
13、3 h at 100 C bath, 21 C cooling plate) Fog Number, min 60 Formation of clear film, droplets or crystals is cause for rejection. Cured samples shall be tested. 3.4.10 Quality Shall be a smooth homogenous mixture free from foreign materials and properties detrimental to normal production operation. 3.
14、4.11 Pumpability Plant Equipment Simulation: Pumpability of material shall be determined prior to plant used by evaluating its pumpability in equipment simulating the plant system. 3.4.12 Corrosion Test - Donut Test There shall be no evidence of red rust at any location under the sealer ribbon. Test
15、 Method: . Apply a 25 x 1.5 mm ribbon of material to bare steel per para 52.2 to form a ring (donut) 80 mm outside diameter. . Place a polyester sheet over the adhesive ribbon within 30 minutes after application. . Cure the samples for 7 days at 23 +/- 2 C. . After cure, expose the samples to the fo
16、llowing cycle test: 16 h at 90 +/- 2 C followed by 8 h at 23 +/- 2 C (10 cycles total) . Examine each sample daily and observe for any visible evidence of corrosion or discoloration. . Upon completion of the thermal cycles, remove the sealer ribbon and examine surface of metal for evidence of corros
17、ion. ENGINEERING MATERIAL SPECIFICATION WSS-M2G355-B Page 4 of 6 Copyright 2015, Ford Global Technologies, Inc. 3.5 CURE RATE PROPERTIES 3.5.1 Open Time The materials maximum open time shall not exceed 15 minutes and the bonding surface shall be kept free of contamination (e.g., dirt, heavy dust, oi
18、ls, grease, etc.). 3.6 CURED ADHESIVE PROPERTIES 3.6.1 Flexibility No cracks on a 25 mm Mandrel Test Method: ASTM F 147, except condition a 150 mm long x 25 mm wide x 3 mm thick sample for 120 h at 23 +/- 2 C unless otherwise specified. At Temperature Testing - condition samples for the time and tem
19、perature specified and test at that temperature. . 24 h at 23 +/- 2 C . After 24 h at - 30 +/- 1 C . After 30 minutes at 120 +/- 1 C (15 h material cure only). Conditioned Specimen Testing - Age and condition samples as specified below. Condition aged samples 30 minutes at 23 +/- 1 C prior to flexib
20、ility test. Test at 23 +/- 1 C. . Heat aged 2 weeks at 90 +/- 2 C. . Thermal cycle - 5 cycles One cycle consists of: 4 h at 90 +/- 2 C 4 h at 38 +/- 1 C and 98 +/- 2 % relative humidity 16 h at - 30 +/- 1 C 3.6.2 Hardness After Curing, +/- 5 from initial Durometer “A“ material approval (ASTM D 2240)
21、 Test Method: Flow enough material into a container (such as an ointment tin) to give cured section 5 mm thick. Cure for 120 h at room temperature and check the instantaneous hardness. Reference 5.6. ENGINEERING MATERIAL SPECIFICATION WSS-M2G355-B Page 5 of 6 Copyright 2015, Ford Global Technologies
22、, Inc. 3.6.3 Tensile/Elongation (ASTM D 412) Tensile at Break, min 65 kPa Elongation at Break, min 30 % 3.7 PERFORMANCE REQUIREMENTS Shall conform to the requirements of WSB-M11P59-A for bonded in headliner applications. 5. GENERAL INFORMATION The information below is provided for clarification and
23、assistance in meeting the requirements of this specification. 5.1 MECHANICAL CONVECTION OVEN The mechanical convection oven(s) used to cure the material shall be capable of obtaining 205 +/- 3 C metal temperature on body steel gage thickness in 10 minutes. 5.2 SUBSTRATES 5.2.1 Headliner: A fiberglas
24、s backed rigid headliner core with a nominal thickness of 22 mm. 5.2.2 Galvanized Steel meeting WSB-M1A250-C3-60G60G-EL: 0.80 mm nominal thickness. The following substrates listed below shall be used for testing: . Bare steel (cleaned only) . Phosphate only . Phosphate + E-Coat Primer . Phosphate +
25、E-Coat Primer + Taupe Primer “Overspray“ . Phosphate + E-Coat Primer + Taupe Primer “Overspray“ + BC/CC “Overspray“ (36J1) . Phosphate + E-Coat Primer + Taupe Primer “Overspray“ + BC/CC “Overspray“ (silver) BC/CC “Overspray“ (silver) 5.2.3 Paints Phosphate, electrocoat, primed, and topcoat steel pan
26、els: Prepare per ESB-M2P4 performance specification. Use current production paints as identified by the responsible Materials Engineering Activity. ENGINEERING MATERIAL SPECIFICATION WSS-M2G355-B Page 6 of 6 Copyright 2015, Ford Global Technologies, Inc. 5.3 COLOR Tan 5.4 WEIGHT PER VOLUME, Typical 1.00 - 1.4 kg/L 5.5 VISCOSITY As received 20 - 70 s Aged Shall not be more than 20 s greater . 72 h at 54 +/- 3 C than as received . 90 days at 23 +/- 2 C viscosity. 5.6 HARDNESS, Typical 40
