1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2007 04 19 Revised Inserted 2.1, 4.1.4, 4.1.5 Rev 2. revised para 2, 3.4.3, 3.4.4, 3.5.2 and 4.3.3; added B5 M. Mehandru 2000 08 17 Activated M. Black Printed copies are uncontrolled Copyright 2007, Ford Global Technologies, LLC Page 1 of 12 A
2、DHESIVE, MOISTURE CURING URETHANE, ONE COMPONENT, WSS-M2G316-B2 PRIMERLESS TO SILANE BASED CLEARCOAT PAINT, DIRECT FIRED OVENS ONLY ADHESIVE, MOISTURE CURING URETHANE, ONE COMPONENT, WSS-M2G316-B3 PRIMERLESS TO NON SILANE BASED CLEARCOAT PAINT ADHESIVE, MOISTURE CURING URETHANE, ONE COMPONENT, WSS-M
3、2G316-B5 PRIMERLESS TO SILANE BASED CLEARCOAT PAINT 1. SCOPE The material defined by these specifications is a one component moisture curing urethane adhesive which is primerless to clearcoat paint chemistries. 2. APPLICATION These specifications were released originally for material used in conjunc
4、tion with a 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 bond primerless to e-coated surfaces that are contaminate free and can also be used in conjunction with meta
5、l flange primers. WSS-M2G316-B2 shall be used in assembly plants with silane based clearcoat painted metal surfaces baked only in direct fired oven. WSS-M2G316-B3 shall be used in assembly plants with non silane based clearcoat painted metal surfaces. It must not be used with silane based clearcoat
6、painted surfaces WSS-M2G316-B5 Shall be used in assembly plants where data has shown a compatibility with the assembly plants clearcoat chemistry. This material was originally released for silane based clearcoat painted metal surfaces baked in direct or indirect fired oven. 2.1 MANUFACTURING PROCESS
7、 RECOMMENDATION These adhesives are moisture sensitive and require special handling as outlined in Table 2. The process parameters listed in Table 2 cover the critical elements for these materials and are not all inclusive. Please consult with Materials Engineering for any questions. Approved suppli
8、ers 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. ENGINEERING MATERIAL SP
9、ECIFICATION WSS-M2G316-B2/B3/B5 Printed copies are uncontrolled Copyright 2007, Ford Global Technologies, LLC Page 2 of 12 3. REQUIREMENTS 3.1 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and part producers must conform to the Companys Standard Requirements For Production Materi
10、als (WSS-M99P1111-A). 3.2 UNCURED ADHESIVE PROPERTIES 3.2.1 Rheology (SAE J1524, rotational 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
11、material to highest stress of strain as the formulation will allow, report 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.
12、1.1 Initial (as received) Test at 23 +/- 1 C Test at application temperature +/- 2 C Test over range 10 to 50 C at increments of 10 C 3.2.1.2 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 +/- 3
13、0%, based on the recorded rheology of the original approved production sample. 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 refere
14、nce standard when tested under the same conditions. 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 identified on the material control plan. 3.2.2 Solids, min 98% (ASTM D 2834,
15、 except heat for 3 h at 100 +/- 3 C in a mechanical convection oven) 3.2.3 Ash, based on solids weight, max 21% (ASTM D 482) 3.2.4 Weight per 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. Reference
16、 paragraph 4.5. ENGINEERING MATERIAL SPECIFICATION WSS-M2G316-B2/B3/B5 Printed copies are uncontrolled Copyright 2007, Ford Global Technologies, LLC Page 3 of 12 3.2.5 Sag, max 4 mm Test Method: . Apply a 76 mm long right triangular shaped bead of material 6 mm wide at the base and 15 mm high on a g
17、lass 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. 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 f
18、or cleanup or other uses. 3.2.7 Storage Stability 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 max shelf life to the material, from date of shipment from th
19、e supplier, shall be 3 months. The supplier must label 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 The materi
20、al 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 100 C heating, 21 C cooling plate, post test conditioning 1 and 16 hrs.) Fog Number, min 70% Any fog film present shall be
21、 examined for the formation of droplets or coalescence into a clear film. Such conditions, if present, shall be cause for rejection. Uncured and cured samples shall be tested. 3.2.10 Quality Shall be a smooth homogeneous mixture free from foreign materials and properties detrimental to normal produc
22、tion 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. ENGINEERING MATERIAL SPECIFICATION WSS-M2G316-B2/B3/B5 Printed copies are uncontrolled Copyright 2007, Ford Global Techno
23、logies, LLC Page 4 of 12 3.3 CURE RATE PROPERTIES 3.3.1 Tack Free A 150 mm long and 6 mm diameter bead shall be tack free in 30 minutes and cured after 72 h at 23 +/- 2 C, 50% +/- 5% R.H. Apply beads of adhesive to a clean float glass panel. Touch the bead gently using a cotton swab for tack free te
24、st. Cut the bead using a sharp razor blade for curing test. 3.3.2 Sandwich Tensile Pull Strength Versus Cure Time, min Cure Time Sandwich Tensile Pull Strength 1.5 hours 240 kPa 3.0 hours 517 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 . Pr
25、epare a minimum of 3 sandwich assemblies for each cure time tensile pull strength test as per Figure 2. . Brush apply glass primer wipe onto float glass substrate in area where adhesive is to be applied. Wipe off with a clean cloth immediately after application. . With 10 minutes maximum after glass
26、 primer wipe off, brush apply blackout glass primer to the glass surface in the same area. Condition primer at R.T. for 5 minutes min, 72 h max. . Apply a 50 mm long by 6.4 mm diameter bead of adhesive to the primed glass, as illustrated in Figure 2. Within 5 minutes after adhesive application, posi
27、tion 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 thickness. . Condition assemblies same at R.T. for various cure times as indicated above. . Determine the adhesion in a tensile machine ha
28、ving a jaw separation rate of 25 mm/minutes. Report strength value and mode of failure. . See para 4.1, 4.2, 4.3, 4.4. ENGINEERING MATERIAL SPECIFICATION WSS-M2G316-B2/B3/B5 Printed copies are uncontrolled Copyright 2007, Ford Global Technologies, LLC Page 5 of 12 3.4 CURED ADHESIVE PROPERTIES 3.4.1
29、 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 3.4.2 Tear Strength, min 175 N/cm (ASTM D 624, Type C die sample a
30、fter curing at R.T. for 120 h and pulled at 50 cm/minute) 3.4.3 Hardness, Durometer “A“ 70 +/- 6 Points (ASTM D 2240) 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. 3.4.4 Ten
31、sile Properties (ASTM D 412, except where noted, use Type C 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,
32、 report at 23 +/- 2 C, use extensometer or strain gage, test at -40, 23, 50 and 80 +/- 2 C) Tensile at break, min 6.9 MPa Modulus of elasticity WSS-M2G316-B2/B5 5 - 7 MPa WSS-M2G316-B3 4 - 6 MPa Elongation at break, min 200% Poissons Ratio 0.25 0.50 ENGINEERING MATERIAL SPECIFICATION WSS-M2G316-B2/B
33、3/B5 Printed copies are uncontrolled Copyright 2007, Ford Global Technologies, LLC Page 6 of 12 Modulus of elasticity (ASTM D 4065 or equiv.) (via Dynamic Mechanical Analyzer: run frequency sweep between 0.1 to 100 Hz. Via Dynamic Mechanical Thermal Analyzer: set heating rate to 2 C/min; record at a
34、 frequency of 1 and 10 Hz; bending mode; sample size depends on equipment). WSS-M2G316-B2/B5 25 35 MPa WSS-M2G316-B3 20 30 MPa Actual material properties are temperature and formulation dependent. Results are on file with Materials Engineering. 3.5 CURED ADHESION PROPERTIES 3.5.1 Shear Adhesion, min
35、 2.5 MPa (unless otherwise specified) (SAE J1529, with exceptions below) Determine shear strength at a speed of 25 mm/minute. A minimum of 5 specimens shall be tested. Report actual values and failure modes. No single value allowed below 2.5 MPa. Paint delamination is allowed at values above 2.5 MPa
36、. Exposure Conditions - Bonded Test Assemblies: . Normal (fresh materials) test at R.T., -10 +/- 1 C, and 43 +/- 2 C. . Normal (urethane aged 3 months and primers aged 2 months at 35 +/- 2 C) test at R.T., -10 +/- 1 C, and 43 +/- 2 C. . 2 weeks heat age at 90 +/- 2 C. . 240 h water immersion at 32 +
37、/- 1 C (FLTM BI 104-01). . 2 weeks humidity age at 98 +/- 2% relative humidity and 38 +/- 2 C. . 2000 h Weatherometer (SAE J1885). . 2 years Florida exposure, 5 South DWI. . See para 4.1, 4.2, 4.3, 4.4. Test Method Exceptions: Lap Shear . Prepare shear assemblies as illustrated in Figure 1. . Brush
38、apply glass primer wipe on the bottom 6.4 mm of each glass coupon outlined in Table 1. Wipe off with a clean cloth immediately after application. ENGINEERING MATERIAL SPECIFICATION WSS-M2G316-B2/B3/B5 Printed copies are uncontrolled Copyright 2007, Ford Global Technologies, LLC Page 7 of 12 . Within
39、 10 minutes maximum after glass primer wipe off brush apply glass blackout primer to the glass surface in the same area. Condition primer at R.T. for 5 minutes min, 72 h max. . Apply a 6.4 mm diameter bead of adhesive along the primed glass coupon surface. Within 5 minutes after adhesive application
40、, position the adhesive on the glass coupon in contact with the painted metal surface. Maintain a 5 mm nominal adhesive bondline thickness. . Condition assembly at R.T. for 72 h prior to test or environmental aging. Assemblies tested at -10 C and 43 C shall be maintained at temperature for 2 h min p
41、rior to test. After environmental aging, maintain the assemblies at R.T. for 4 h prior to test. . Determine the adhesion in a tensile machine having a jaw separation rate of 25 mm/minute. Report strength value and mode of failure. Refer to SAE J1529 for sample fixture and other pertinent test inform
42、ation. . See para 4.1, 4.2, 4.3, 4.4. Note: Any new primer and/or paint system or ceramic coated glass must be tested for adhesion properties. Adhesion values and mode of failure shall be reported prior to approval and release for plant application. 3.5.2 Peel Adhesion (Quick Knife Adhesion) (FLTM B
43、U 154-01) The material shall exhibit 100% cohesive failure of the urethane to production electrocoat, spray primer, topcoat and primed glass. Adhesive failure of the urethane to substrate is cause for rejection. Paint splitting is allowed up to 5 mm max linearly when peeled. All paint splitting must
44、 be reviewed with the affected Materials Engineering activity. Note: Any new primer and/or paint system or ceramic coated glass must be tested for adhesion properties. Mode of failure shall be reported prior to approval and release for plant application. 3.5.3 Vibration Test The urethane bond on all
45、 vibration test samples shall withstand without loss of adhesion to both substrates as outlined in the vibration test below. Test Equipment: Glass 125 mm x 95 mm x 6 mm, primed or primed and painted panel 150 mm x 50 mm x 0.89 mm. Appropriate primers on glass and paint panels are to be used. See par
46、a 4.1, 4.2, 4.3, 4.4, and SAE J1529 for substrates, primers, and process. ENGINEERING MATERIAL SPECIFICATION WSS-M2G316-B2/B3/B5 Printed copies are uncontrolled Copyright 2007, Ford Global Technologies, LLC Page 8 of 12 Vibration Test Method: A 95 mm long right triangular bead 8 mm x 14 mm is placed
47、 on a glass plate along one of the 95 mm edges. The glass is then positioned so as to sandwich the adhesive material between it and the metal panel and forced down until the adhesive reaches a uniform thickness of 6 mm. The specimens are cured for a min of 72 h at R.T. Each sample is then tested on
48、the vibration machine and must withstand, without physical change, a total of 900,000 cycles of shear using 0.40 mm deflection and a 0.25 mm tension. All samples must pass 300,000 cycles each at R.T., -29 C, and water immersion. See Figure 3. 4. GENERAL INFORMATION The information given below is pro
49、vided for clarification and assistance in meeting the requirements of this specification. 4.1 RELATED MATERIALS AND PROCEDURE 4.1.1 Glass Primer Wipe WSB-M5B280-C/C2/C3 4.1.2 Adhesion Primer, Glass WSB-M2G314-B (Blackout primer) 4.1.3 Adhesion Primer, Painted Metal WSB-M2G234-C/C2/C3 4.1.4 AVP-T118-001 Adhesive and Paint compatibility process laboratory and plant validation 4.1.5 AVP-T118-002 Adhesive and glass compatibility process laboratory and plant validation 4.2 RESTRICTIONS This adhesive should
