1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2009 03 13 Revised See Summary of Revisions M. Mehandru, FNA2007 04 19 Revised Inserted 2.1, 5.1.4, 5.1.5 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
2、weight of applied bead of adhesive. For application temperature of material under test see 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
3、to vertical position and fix one glass plate, add a weight to lower glass specimen to a total weight force of 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 tac
4、k free in 30 minutes and cured after 72 h at R.T. Apply beads of adhesive to a clean 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
5、Tensile Pull Strength 1.5 hours 240 kPa 3.0 hours 517 kPa 6.0 hours 1.37 MPa 24.0 hours 2.5 MPa 72.0 hours 2.5 MPa ENGINEERING MATERIAL SPECIFICATION WSB-M2G316-B Printed copies are uncontrolled Copyright 2009, Ford Global Technologies, LLC Page 4 of 6 Test Method: Sandwich Tensile Pull Strength . P
6、repare a minimum of 3 sandwich assemblies for each cure time tensile pull strength test as per Figure 1. . Brush apply metal primer onto painted coupon substrates in area where adhesive is to be applied. Condition the applied primer at R.T. for 30 minutes min, check the process standard for the max
7、open time. Brush apply glass primer or primers onto bottom 6.4 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 long by 6.4 mm diam
8、eter 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 contact with the primed metal surface. Maintain a 5 mm nominal adhesive bondline thickness. . Condition assemblies same at R.T. for various
9、 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. 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
10、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“ 60 +/- 5 Test Method: Flow enough material into a container (such as an ointment tin) to give a cured section 5 mm thick. Cure for 72
11、 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 the material manufactur
12、er 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) ENGINEERING MATERIAL SPECIFICATION WSB-M2G316-B Printed copies are uncontrolled Copyright 2009, Ford Global Technologies, LLC Page 5 of 6 Tensile at b
13、reak, min 6.9 MPa Elongation at break, min 200% Poissons Ratio 0.25 0.50 Modulus of elasticity (ASTM D 4065 or equiv. 10 MPa, min 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. Temper
14、ature Sweep: -40 C to 100C, 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. 3.5 CURED MATERIAL PERFORMANCE PROPERTIES Parts and/or test samples prepared with mat
15、erials according to these specifications shall meet all requirements of performance specifications WSS-M11P57-A5. 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,
16、 the adhesive must be evaluated under the production parameters of the relevant production line. The 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
17、 all potential applications on a vehicle. Therefore materials being evaluated for approval to this specification 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 m
18、aterial approval and release. 4. GENERAL INFORMATION The information given below is provided for clarification and assistance in meeting the requirements of this specification. 4.1 RELATED MATERIALS AND PROCEDURE 4.1.1 Glass Primer Wipe WSS-M5B280-C5 4.1.2 Adhesion Primer, Glass WSS-M2G314-B2 (Black
19、out primer) 4.1.3 Adhesion Primer, Painted Metal WSB-M2G234-C WSS-M2G234-C3 ENGINEERING MATERIAL SPECIFICATION WSB-M2G316-B Printed copies are uncontrolled Copyright 2009, Ford Global Technologies, LLC Page 6 of 6 4.2 SUBSTRATES 4.2.1 Metal Substrate: Prior to releasing to this specification, the ad
20、hesive 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 Coating:
21、 4.3 WEIGHT PER VOLUME, Typical 1.15 1.30 kg/L (Refer to para 3.2.4) 5. SUMMARY OF REVISIONS 2009 03 13 1. Updated 2.1 and deleted Table 1. 2. Revised Storage Stability. 3. Added 3.5 Cured Material Performance Properties. 4. Revised 4.1 to reflect the new specification for Glass primers. 5. Title and Scope updated 6. Added FLTM to 3.2.2 Solid and 3.2.3 Ash 7. Updated 3.2.8 Odor and 3.2.9 Fogging 8. Added tests 3.2.12 Slippage 9. Deleted 3.4.2 Tear Strength 10. Changed Numbering.
