1、 ENGINEERING MATERIAL SPECIFICATION Date Action Revisions Rev. 2 2013 05 17 Revised See summary W. Janitschke, EU 2010 06 16 Revised Revised 3.21 and 3.2.1.1 M. Mehandru, NA 2009 01 22 Activated W. Janitschke, M. Mehandru, FNA Copyright 2013, Ford Global Technologies, LLC Page 1 of 7 ADHESIVE, POLYU
2、RETHANE, ONE COMPONENT, HIGH SHEAR WSS-M2G316-B6 MODULUS, FAST FIX, LOW-CONDUCTIVE, AMBIENT PUMPABLE, WARM APPLIED 1. SCOPE The material defined by these specifications is a one component moisture curing urethane adhesive with a fast fix behavior which is primerless to clearcoat paint chemistries. 2
3、. APPLICATION These specifications were released originally for material used in conjunction with a one or two stage glass priming operation (primers identified per para 4) to bond glass windshields, glass rear windows and quarter windows to painted metal surfaces. These materials will also bond pri
4、merless to e-coated surfaces that are contaminate free and can also be used in conjunction with metal flange primers. Application Temperature: above 55 C 2.1 MANUFACTURING PROCESS RECOMMENDATION These adhesives are moisture sensitive and require special handling for manual and automated process. App
5、roved suppliers are responsible for maintaining the accuracy and relevancy of these process parameters (in their Process Standard). Approved suppliers must submit any changes to these process parameters in a timely manner (within 30 days) for review and approval by Materials Engineering, Vehicle Ope
6、rations, and Product Development Engineer. 3. REQUIREMENTS 3.1 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and part producers must conform to the Companys Standard Requirements For Production Materials (WSS-M99P1111-A). 3.2 UNCURED ADHESIVE PROPERTIES 3.2.1. VISCOSITY at 60 C F
7、LTM BV 103-01, 4 bar line pressure, nozzle 4 mm ID, conditioning time up to measurement 30 Min at test Temperature 3.2.1.1 At 60 C 50 65 g/minute 3.2.1.2 After Aging 35 65 g/minute (336 h at 60 +/- 2 C) Final approval of a specific materials viscosity for production shipment shall be made by the aff
8、ected manufacturing activity. In all cases the materials viscosity has to be in the specification limits. The material shall meet all requirements of this specification. ENGINEERING MATERIAL SPECIFICATION WSS-M2G316-B6 Copyright 2013, Ford Global Technologies, LLC Page 2 of 7 3.2.2. Rheology (SAE J1
9、524, cone and plate rheometer with 40 mm diameter parallel plates, 500 micron gap, 50 Pa/sec ramp, stress controlled rheometers use stress range 0 - 3500 Pa, strain controlled rheometers use strain range 0 - 100 sec-1, evaluate material to highest stress of strain as the formulation will allow, repo
10、rt material batch/lot number, identify rheometer make and model, for each test condition report yield stress and submit plots for shear stress vs shear rate, submit plot for viscosity vs temperature at mid-range shear rate. 3.2.2.1 Initial (as received) Test at 23 +/- 1 C Test at application tempera
11、ture +/- 2 C Test over range 10 to 50 C at increments of 10 C 3.2.2.2 Aged (Age then test at 23 C and application temperature) 7 days at 40 +/- 1 C 90 days at 32 +/- 1 C The rheology variation for any one supplier shall be +/- 20%, based on the recorded rheology of the original approved production s
12、ample. The flow curves established for initial approval shall constitute the reference standard and shall be kept on file at the designated material laboratory. All samples shall produce flow curves that correspond to the reference standard when tested under the same conditions. All samples shall pr
13、oduce flow diagrams including viscoelasticity established by rotational test equipment to identify characteristic of materials. Final approval of material rheology for production shipments shall be made by the affected manufacturing activity. In all cases, the rheology shall be within the limits as
14、identified on the material control plan 3.2.3 Solids 95% min (ASTM D2834, except heat for 3 h at 100 +/- 3 C in a mechanical convection oven or FLTM BV 150-10 ) 3.2.4 Ash, based on solids weight 30% max (ASTM D482 or FLTM BV 150-10) 3.2.5 Sag 4 mm max Test Method: . Apply a 76 mm long right triangul
15、ar shaped bead of material 6 mm wide at the base and 15 mm high on a glass or steel panel. . Permit the panel to air dry for 30 minutes at R.T. in a plane 60 angle from the horizontal. Measure the sag. ENGINEERING MATERIAL SPECIFICATION WSS-M2G316-B6 Copyright 2013, Ford Global Technologies, LLC Pag
16、e 3 of 7 3.2.6 Sensitivity to Alcohol CAUTION: Slight traces of alcohol will inhibit the cure of this adhesive. The use of alcohol or alcohol containing solvents is prohibited for cleanup or other uses. 3.2.7 Storage Stability (From date of receipt at Ford Motor Company) Shall be stored at ambient r
17、oom temperature below 35 C, away from all sources of heat, such as ovens, direct sunlight, etc. Shall not be stored outside. Under these storage conditions, the max shelf life to the material, from date of shipment from the supplier, shall be 6 months stored in close containers. The supplier must la
18、bel each container to indicate the expiration date of the material, and production usage beyond the expiration date is not permitted. When stored at temperatures below 23 C, it must be conditioned at R.T. for 72 h prior to use. 3.2.8 Odor Rating 3 max (FLTM BO 131-03), cured material per 7 days at R
19、T The material must not have a toxic or noxious odor. After curing, the material must be relatively non-odorous as defined by the affected assembly plant. 3.2.9 Fogging Test (SAE J1756, 3 h at 100 C heating, 21 C cooling plate, post test conditioning 1 and 16 hrs.) Fog Number 90 min Any fog film pre
20、sent shall be examined for the formation of droplets or coalescence into a clear film. Such conditions, if present, shall be cause for rejection. Cured samples shall be tested. 3.2.10 Quality Shall be a smooth homogeneous mixture free from foreign materials and properties detrimental to normal produ
21、ction operation. 3.2.11 Non-Interchangeability of Materials Only approved materials, all from the same production (supplier) source, shall be used in conjunction with one another. 3.2.12 Slippage 0 mm max Test Method: Apply 2 parallel beads (approx. 12 g in total; triangle form, 9 mm base and 13 mm
22、height) of material under test to a 125 x 75 x 4 mm primed float glass specimen and check for correct weight of applied bead of adhesive. ENGINEERING MATERIAL SPECIFICATION WSS-M2G316-B6 Copyright 2013, Ford Global Technologies, LLC Page 4 of 7 For application temperature of material under test see
23、Engineering Material specification. 2 min after application assemble with a 200 x 200 primed glass plate to a bead thickness of 4mm and fix in that position for 10 s. Remove distance spacers and turn assembly to vertical position and fix one glass plate , add a weight to lower glass specimen to a to
24、tal weight force of 8 N and measure the slippage after 2 h. Record all details of measurements and material under test. 3.2.13 Open Time 3 minutes max Time between application of adhesive and assembling of part should not exceed the time specified above. 3.3 CURE RATE PROPERTIES 3.3.1 Sandwich Tensi
25、le Pull Strength Versus Cure Time Cure Time Sandwich Tensile Pull Strength, min 1.5 hours 150 kPa 3.0 hours 500 kPa 6.0 hours 1.2 MPa 24.0 hours 2.5 MPa 72.0 hours 2.5 MPa Test Method: Sandwich Tensile Pull Strength . Prepare a minimum of 3 sandwich assemblies for each cure time tensile pull strengt
26、h test as per Figure 1. . Brush apply glass primer or primers onto bottom 8.0 mm of each glass coupon according to the process standard of the primer or primers. Allow primer to air dry. Condition primer at R.T. for 5 minutes min, check the process standard for the max open time. . Apply a 50 mm lon
27、g by 8.0 mm diameter bead of adhesive to the primed glass, as illustrated in Figure 1. Within 5 minutes after adhesive application, position the adhesive on the glass coupon in contact with the painted metal surface (electrocoated panel may also be used). Maintain a 5 mm nominal adhesive bondline th
28、ickness. . Condition assemblies same at R.T. for various cure times as indicated above. . Determine the adhesion in a tensile machine having a jaw separation rate of 25 mm/minutes. Report strength value and mode of failure. ENGINEERING MATERIAL SPECIFICATION WSS-M2G316-B6 Copyright 2013, Ford Global
29、 Technologies, LLC Page 5 of 7 3.4 CURED ADHESIVE PROPERTIES 3.4.1 Flexibility (ASTM F 147, except condition at 150 mm long x 25 mm wide x 2.5 mm thick sample for 120 h at R.T., and then 4 h at the following temperatures) . 23 +/- 2 C No crack on 3 mm mandrel . -29 +/- 1 C No crack on 25 mm mandrel
30、3.4.2 Hardness, Durometer “A“ 70 +/- 6 Points (ASTM D2240) Test Method: Flow enough material into a container (such as an ointment tin) to give a cured section 5 mm thick. Cure for 72 h at R.T. and check the instantaneous hardness. 3.4.3 Tensile Properties (ASTM D 412, except where noted, use Type C
31、 die and pull at 50 cm/minute, cure on release paper between 3 mm aluminum panels for 7 days at 23 +/- 2 C and 50 +/- 5% relative humidity or as recommended by the material manufacturer to achieve full cure. Condition at 23 +/- 2 C for 24 h, report at 23 +/- 2 C, use extensometer or strain gage, tes
32、t at -40, 23, 50 and 80 +/- 2 C) Tensile at break 9.6 MPa min Tensile Modulus 3.5 MPa Elongation at break 300% min Poissons Ratio 0.25 0.50 Modulus of elasticity (ASTM D 4065 or equiv. 40 MPa, min Report the value at 23 +/- 2 C, and 1 Hz) (Dynamic Mechanical Analyzer tensile compression mode) square
33、4 Frequency Sweep 0.1 to 100 Hz, fixed stress of 0.5% at 23 +/- 2 C. square4 Temperature Sweep: -40C to 100 C, set heating rate to 2 C/min; fixed strain of 0.5% at 1 Hz frequency. Actual material properties are temperature and formulation dependent. Results are on file with Materials Engineering. 3.
34、5 CURED MATERIAL PERFORMANCE PROPERTIES Parts and/or test samples prepared with materials according to these specifications shall meet all requirements of performance specifications WSS-M11P57-A5. ENGINEERING MATERIAL SPECIFICATION WSS-M2G316-B6 Copyright 2013, Ford Global Technologies, LLC Page 6 o
35、f 7 3. 6 LINE TRIAL The Requirements defined in this specification are based upon laboratory coupon testing and define the minimum acceptance criteria for adhesive performance. Prior to use, the adhesive must be evaluated under the production parameters of the relevant production line. The choice of
36、 substrates, plant processing conditions and specific design application may affect adhesive performance. Compliance with this specification does not guarantee the adhesive will function for all potential applications on a vehicle. Therefore materials being evaluated for approval to this specificati
37、on shall be subjected to a production trial. Functional trial results must be approved by the affected assembly operation. Results shall be made available to Materials Engineering prior to material approval and release. 4. GENERAL INFORMATION The information given below is provided for clarification
38、 and assistance in meeting the requirements of this specification. Contact for questions concerning Engineering Material Specifications. 4.1 RELATED MATERIALS AND PROCEDURE 4.1.1 Glass Primer Wipe not required for FoE WSW-M5B280-C4 4.1.2 Adhesion Primer, Glass WSS-M2G314-B2 (Blackout primer) 4.2 SU
39、BSTRATES 4.2.1 Metal Substrate: Prior to releasing to this specification, the adhesive must be tested to painted steel panels of nominal thickness 0.80 mm. The substrate must be painted with all of the production paint systems that are currently being used by the assembly plant. 4.2.2 Float Glass: 5
40、.6 mm nominal thickness. 4.2.3 Float Glass with WSS-M99P6-C1/C2 Ceramic Coating 4.3 WEIGHT PER VOLUME/DENSITY, Typical 1.15 - 1.30 kg/L 5. SUMMARY OF REVISIONS 2013 05 17 Removed regional requirement for 3.2.1 Viscosity. Updated para. 3.3.1 Sandwich Tensile Pull Strength ENGINEERING MATERIAL SPECIFICATION WSS-M2G316-B6 Copyright 2013, Ford Global Technologies, LLC Page 7 of 7 FIGURE 1 Top View View Side View 8.0 mm 150 mm 5 mm Thick Glass 50 mm x 6.4 mm Bond Area 5 mm thick Metal 50 mm mm
