1、 ENGINEERING MATERIAL SPECIFICATION Material Name Specification Number Date Action Revisions 2014 12 08 N Status No replacement named L. Sinclair, NA 2003 01 24 Revised Para 3.0 inserted ; Para 3.1, 3.2, 3.3, 3.16, 3.17, 4 deleted 1991 04 23 NB00I10043054075 Released A. W. Brownes JBM Page 1 of 3 Co
2、pyright 2014, Ford Global Technologies, Inc. ADHESIVE, SYNTHETIC RUBBER, WATER DISPERSION, WSB-M2G55-C FAST TACK NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is a fast tack synthetic rubber base, water dispersion adhesive which is airless sprayable. 2. APPLICATIO
3、N This specification was released originally for an adhesive to bond acoustical pads to primed roofs, quarter wheelhousings, cowl sides, lower cowls. Additional applications include various interior trim components such as door trim, package trays and speaker grills etc. Materials meeting this speci
4、fication do not guarantee that the adhesive will function for all potential applications on a vehicle. The specific design condition, including high temperature performance, should be evaluated by a plant trial or laboratory simulation prior to release of the material. 3. REQUIREMENTS Material speci
5、fication requirements are to be used for initial qualification of materials. 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 COLOR Off-white or red 3.5 VISCOSITY
6、 See suppliers acceptable recommendations dependent on assembly plant manufacturing requirements. 3.6 SOLIDS See suppliers acceptable recommendations dependent on assembly plant manufacturing requirements. 3.7 ASH (based on solids weight), max 39 % (ASTM D 816) Test Method: Place crucible containing
7、 the solids residue in a cool muffle furnace. Slowly heat to and maintain at 760 +/- 30 C for 1 h. Cool in a desiccator and weigh. ENGINEERING MATERIAL SPECIFICATION WSB-M2G55-C Page 2 of 3 Copyright 2014, Ford Global Technologies, Inc. 3.8 WEIGHT PER VOLUME (ASTM D 816) The weight tolerance of any
8、one supplier shall be +/- 0.060 kg/L based on the recorded weight of his originally approved production sample. 3.9 FOGGING (SAE J 1756, 3 h at 100 C heating, 21 C cooling plate, post test conditioning 1 h and 16 h) Fog Number, min 60 Formation of clear film, droplets or crystals is cause for reject
9、ion. 3.10 ADHESION TO ACOUSTICAL BATT 3.10.1 Inverted Adhesion Must remain attached to the panel for a minimum of 1 h at 23 +/- 2 C. 3.10.2 Steam Resistance (FLTM BI 107-03) Must remain attached in the inverted position after being exposed to 5 s of wet steam. 3.10.3 Heat Resistance Must remain atta
10、ched in the inverted position after being exposed for 30 minutes at 120 +/- 2 C in a mechanical convection oven. 3.10.4 Environmental Aging Must remain attached under the following conditions: 5 cycles consisting of 4 h at - 30 +/- 2 C, 4 h at 70 +/-2 C, 16 h at 38 +/- 2 C and 95 - 100 % relative hu
11、midity and then subjected to the cold resistance test. Cold shock per FLTM BV 101-01. Ten slams at - 30 +/- 2 C. Test Method: Spray the bonding surfaces of three 250 x 250 mm samples of absorber pads at the recommended weight. Allow a 15 - 30 s open time at 23 +/- 2 C and bond to a 300 x 300 mm curr
12、ent production primed steel panels with light hand pressure and immediately invert. One panel is conditioned in the inverted position for 2 h at 23 +/- 2 C before the steam resistance test (para 3.10.2) is performed. ENGINEERING MATERIAL SPECIFICATION WSB-M2G55-C Page 3 of 3 Copyright 2014, Ford Glo
13、bal Technologies, Inc. One panel is conditioned in the inverted position for 4 h at 23 +/- 2 C before the heat resistance test (para 3.6.3). One panel is conditioned in the inverted position for a 4 h at 23 +/- 2 C then placed in a humidity chamber for 7 days at 38 +/- 2 C and 95 - 100 % relative hu
14、midity. A fourth panel is prepared per steps 1 & 2 then conditioned at 23 +/- 2 C for 24 h, prior to the environmental exposure test (para 3.10.4). A fifth panel is prepared per steps 1 & 2 then conditioned at 23 +/- 2 C for 24 h, prior to the odor exposure test (para 3.11) note smaller size samples
15、 to fit the test cans. A sixth panel is prepared per steps 1 & 2 then conditioned at 23 +/- 2 C for 24 h, prior to the mildew resistance test (para. 3.12). 3.11 ODOR, max Rating 2 (SAE J1351) 3.12 MILDEW RESISTANCE No visual evidence of mildew growth and no mildew odor after 7 days exposure in a hum
16、idity cabinet controlled to 95 +/- 5% relative humidity at 38 +/- 2 C. 3.13 QUALITY The material shall be smooth homogenous mixture, free from foreign materials and properties detrimental to normal production use. 3.14 STORAGE STABILITY The adhesive shall be stored in closed containers at temperatur
17、es of 4 - 38 C, away from all sources of heat or sunlight. Storage times greater than 90 days shall be avoided. A rapid increase in material viscosity occurs particularly at elevated temperatures when this time limit is exceeded. 3.15 FUNCTIONAL APPROVAL Materials being evaluated for initial approval to this specification shall be subjected to a production trial to demonstrate process-ability as well as functional performance. Functional trail result should be available to Design and Material Engineering prior to material approval and release.
