1、 ENGINEERING MATERIAL SPECIFICATION Date Action Revisions Rev. 2 2018 01 19 Revised Released B8 P. Konopka, NA 2008 12 09 Revised See Summary of Revisions M. Mehandru, NA 2005 01 13 Released M. Mehandru Copyright 2018, Ford Global Technologies, LLC Page 1 of 8 ADHESIVE, MOISTURE CURING URETHANE, ONE
2、 COMPONENT, WSS-M2G316-B4 PRIMERLESS TO SILANATED AND NON-SILANATED CLEARCOAT PAINT, INCREASED UV-STABILITY ADHESIVE, MOISTURE CURING URETHANE, ONE COMPONENT, WSS-M2G316-B8 PRIMERLESS TO NON SILANE BASED CLEARCOAT PAINT, INCREASED UV-STABILITY 1. SCOPE The material defined by this specification is a
3、 one component moisture curing urethane adhesive which is primerless to clearcoat paint chemistries. The adhesive is formulated to be used with glass primer systems not requiring a black-out primer. 2. APPLICATION This specification was released for material used in conjunction with a one stage clea
4、r primer to bond glass windshields, glass rear windows and quarter windows to painted metal surfaces. These materials will bond primerless also to e-coated surfaces that are contaminate free and can also be used in conjunction with metal flange primers. WSS-M2G316-B4 shall be used in assembly plants
5、 with silane or non-silane based clearcoat painted metal surfaces. WSS-M2G316-B8 shall be used in assembly plants with non silane based clearcoat painted metal surfaces. It must not be used with silane based clearcoat painted surfaces. 2.1 MANUFACTURING PROCESS RECOMMENDATION These adhesives are moi
6、sture sensitive and require special handling for manual and automated process. Approved 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 man
7、ner (within 30 days) for review and approval by Materials Engineering, Vehicle Operations, and Product Development Engineer. 3. REQUIREMENTS 3.1 APPROVED SOURCES This specification requires the use of approved sources. Only the sources identified on the Ford Approved Source List (ASL) can be used wh
8、en this specification is listed on the drawing, CAD file, or other documents. The list of approved sources is located within Ford at or available externally through a Ford Materials Engineer. 3.2 UNCURED ADHESIVE PROPERTIES 3.2.1 Viscosity at 23 C (Rotational Rheometer. For Europe only) Tempering T
9、ime: 300 s Pause Interval: 180 s at 131 1/s Downward Measure: 131 1/s - 20 1/s in 120 s (30 Measure Points) ENGINEERING MATERIAL SPECIFICATION WSS-M2G316-B4/B8 Copyright 2018, Ford Global Technologies, LLC Page 2 of 8 Viscosity (Pa.s) Yield Point (Pa) 3.2.1.1 As received 1.00 - 1.30 140 150 3.2.1.2
10、After Aging, max 1.35 - 1.45 100 140 (336 h at 30 +/- 2 C) 3.2.2 Rheology (SAE J1524, 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,
11、evaluate 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 r
12、ate. 3.2.2.1 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 3.2.2.2 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
13、 be +/- 30%, 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 t
14、he reference 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. 3.2.3 Solids 98% min (ASTM
15、 D 2834, 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 21% max (ASTM D 482, or FLTM BV 150-10) 3.2.5 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 o
16、riginal approved production sample. Reference paragraph 4.4 3.2.6 Sag 4 mm max 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 glass or steel panel. ENGINEERING MATERIAL SPECIFICATION WSS-M2G316-B4/B8 Copyright 2018, Ford Global Te
17、chnologies, LLC Page 3 of 8 . Permit the panel to air dry for 30 minutes at R.T. in a plane 60 angle from the horizontal. Measure the sag. 3.2.7 Sensitivity to Alcohol CAUTION: Slight traces of alcohol will inhibit the cure of this adhesive. The use of alcohol or alcohol containing solvents is prohi
18、bited for cleanup or other uses. 3.2.8 Storage Stability (From date of receipt at Ford Motor Company) Shall be stored at ambient room 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
19、 life to the material, from date of shipment from the supplier, shall be 4 months stored in close containers. 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
20、 C, it must be conditioned at R.T. for 72 h prior to use. 3.2.9 Odor Rating 2 max (FLTM BO 131-03), cured material per 7 days at RT) 3.2.10 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 present shall be examine
21、d 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. 3.2.11 Quality Shall be a smooth homogeneous mixture free from foreign materials and properties detrimental to normal production operation. 3.2.
22、12 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-B4/B8 Copyright 2018, Ford Global Technologies, LLC Page 4 of 8 3.2.13 Slippage 10 mm max Test
23、Method: Apply 2 parallel beads (approx. 12 g in total; triangle form, 9 mm base and 13 mm 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 For application temperature of material under test see Engineering Materi
24、al 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 total weight force of
25、 8 N and measure the slippage after 2 h. Record all details of measurements and material under test. 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 max and cured after 72 h at 23 +/- 2 C, 50% +/- 5% R.H. Apply beads of adhesive to a cle
26、an float glass panel. Touch the bead gently using a cotton swab for tack free test. 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 200 kPa 3.0 hours 400 kPa 6.0 hours 1.2 MPa 24.0 h
27、ours 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 strength test as per Figure 1. . Brush apply glass primer wipe onto float glass substrate in area where adhesive is to be applied. Allow primer to
28、air dry. Condition primer at R.T. for 5 minutes min, check the process standard for the max open time. . 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, position the adhesive on the glass coupon in c
29、ontact 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 having a jaw separation rate of 25 mm/minute
30、s. Report strength value and mode of failure. . See para 4.1, 4.2, 4.3 ENGINEERING MATERIAL SPECIFICATION WSS-M2G316-B4/B8 Copyright 2018, Ford Global Technologies, LLC Page 5 of 8 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 thic
31、k 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 Hardness, Durometer “A“ 65 +/- 10 Points Test Method: Flow enough material into a container (such as an ointment tin) to give a cured section 5
32、mm thick. Cure for 168 h at R.T. and check the instantaneous hardness. 3.4.3 Tensile 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 t
33、he material manufacturer to achieve full cure. Condition at 23 +/- 2 C for 24 h, report at 23 +/- 2 C, use extensometer or strain gage, test at -40, 23, 50 and 80 +/- 2 C) Tensile at break 6.9 MPa min Tensile Modulus 4 - 7 MPa Elongation at break 200% min Poissons Ratio 0.25 - 0.50 Modulus of elasti
34、city (ASTM D 4065 or equiv. 25 35 MPa Report the value at 23 +/- 2 C, and 1 Hz (Dynamic Mechanical Analyzer tensile compression mode) Frequency Sweep 0.1 to 100 Hz, fixed stress of 0.5% at 23 +/- 2 C. Temperature Sweep: -40 C to 100 C, set heating rate to 2 C/min; fixed strain of 0.5% at 1 Hz freque
35、ncy. 3.5 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-B4/B8 Copyright 2018, Ford Global Technologies, LL
36、C Page 6 of 8 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
37、choice of 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 s
38、pecification 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 cla
39、rification 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 WSS-M5B280-C4 4.2 SUBSTRATES 4.2.1 Metal Substrate: Prior to releasing to this specification
40、, 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: 5.6 mm nominal thickness. 4.2.3 Float Glass with WSS-M99P6-C1/C2 Ceramic
41、Coating: 4.3 WEIGHT PER VOLUME, Typical 1.15 - 1.30 kg/L (Refer to para 3.2.5) 4.4 APPROVAL OF MATERIALS Suppliers desiring approval of their materials shall first obtain an expression of interest from Purchasing, Design or Product Development, and Materials Engineering. The supplier shall submit a
42、completed copy of their laboratory test reports, signed by a qualified and authorized representative of the test facility, demonstrating full compliance with all the requirements of the Material Specification. Tested material samples must be available for review upon request and kept for a minimum o
43、f one year. Upon request, the supplier will review the associated quality control documents (Process Failure Mode and Effects Analysis, Control Plans, Certification testing) with Ford. 4.5 SUPPLIERS ONGOING RESPONSIBILITY All materials must be equivalent in all characteristics to the material upon w
44、hich approval was originally granted. Prior to making any changes to the material originally approved, whether or not such changes affect the materials ability to meet the specification requirements, the supplier shall notify the affected Supplier Technical Assistance (STA), Purchasing, and Material
45、s Engineering ENGINEERING MATERIAL SPECIFICATION WSS-M2G316-B4/B8 Copyright 2018, Ford Global Technologies, LLC Page 7 of 8 activities of the proposed changes (with reasons) by submission of a completed Suppliers Request for Engineering Approval, SREA. For parts and components using Ford Engineering
46、 Material Specifications, all samples tested to the specifications for Design Verification (DV), Production Verification (PV) and Production Part Approval Process (PPAP) sign off must be kept until Job 1. 4.6 RESTRICTED SUBSTANCE MANAGEMENT STANDARD Substance restrictions imposed by regulations or C
47、ompany direction applies to the materials addressed by this document. The restrictions are identified in the Restricted Substance Management Standard WSS-M99P9999-A1 which is updated yearly. It is the suppliers responsibility to comply with this standard on a continuing basis through IMDS and or GMA
48、P reporting. ENGINEERING MATERIAL SPECIFICATION WSS-M2G316-B4/B8 Copyright 2018, Ford Global Technologies, LLC Page 8 of 8 Figure 1 5.0 SUMMARY OF REVISIONS 2018 01 19 1. Added suffix BX and updated title, updated Section 2 Application to include new suffix. 2008 12 09 1. Updated 2.1 and deleted Tab
49、le 1. 2 Changed 3.2.1 from Rheology to Viscosity, test method added 3. Revised Storage Stability. 4. Added 3.5 Cured Material Performance Properties. 5. Revised 4.1 6. Added FLTM to 3.2.3 Solid and 3.2.4 Ash 7. Updated 3.2.9 Odor and 3.2.10 Fogging 8. Added tests 3.2.13 Slippage 9 Deleted 3.4.2 Tear Strength 10. Change 4.5
