1、 ENGINEERING MATERIAL SPECIFICATION Date Action Revisions 2007 07 26 Revised Inserted 3.0; Deleted 3.1, 3.2, 3.3, 3.11, 3.12 & 4 2001 12 14 Revised Revised 3.5, 3.6.3, added 3.8 & renumbered L. Soreide, J. Williams 1995 07 21 Released C10537740 P. Thomas Printed copies are uncontrolled Copyright 200
2、7, Ford Global Technologies, LLC Page 1 of 4 PERFORMANCE, INNER DOOR WATERSHIELD WSS-M15P36-A2 WITH PRESSURE SENSITIVE ADHESIVE 1. SCOPE This specification defines the minimum performance requirements for an inner door and other closure watershield. It is comprised of a base material with pressure s
3、ensitive adhesive (e.g. butyl, hot-melt bead, film) applied on one side, in specified areas. Additional formed sections may be included as required. 2. APPLICATION This specification was released originally for materials used for water shield applications. 3. REQUIREMENTS Material specification requ
4、irements are to be used for initial qualification of materials. 3.0 STANDARD REQURIEMENTS FOR PRODUCTION MATERIALS Material suppliers and part producers must conform to the Companys Standard Requirements For Production Materials (WSS-M99P1111-A). 3.4 BASE MATERIAL 3.4.1 Tear Strength, min 7 N (ASTM
5、D 1004) 3.4.2 Dimensional Stability, max (ASTM D 3575) 24 h at 80 +/- 2 C +/- 3% 15 minutes at 100 +/- 2 C +/- 6% 3.4.3 Cold Flexibility No Cracks Test Method: Cut 25 x 150 mm strips in both directions. Condition the strips and a 13 mm diameter mandrel at -40 +/- 2 C for 4 h. Bend the conditioned st
6、rips 180 around the mandrel within 2 - 3 s. 3.4.4 Flammability (ISO 3795/SAE J369) Burn Rate, max 100 mm/minute ENGINEERING MATERIAL SPECIFICATION WSS-M15P36-A2 Printed copies are uncontrolled Copyright 2007, Ford Global Technologies, LLC Page 2 of 4 3.4.5 Fogging (SAE J1756, 3 h at 100 C heating, 2
7、1 C cooling plate, post test conditioning 1 h and 16 h) Fog Number, min 70 Formation of clear film, droplets or crystals is cause for rejection. Adhesive must not adversely affect the result. 3.4.6 Odor, max Rating 2 (FLTM BO 131-01) Adhesive must not adversely affect the result. 3.5 THICKNESS, mm A
8、s specified on the (ISO 1923) Engineering Drawing/ Document 3.6 BASE MATERIAL WITH ADHESIVE All testing must be conducted on production representative topcoat or basecoat/clearcoat test panels using the same paint type as used in the intended assembly plant or plants. All samples must be must be con
9、ditioned for 2 h at 23 +/- 2 C and 50 +/- % relative humidity prior to testing 3.6.1 Peel Adhesion Strength, min (ASTM D 1000, 90 peel angle, Specimen dimension 300 x 25 mm, test speed 300 mm/min, moving plate) Original 4 N/25 mm width After Humidity Aging, Change, max -50% (2 h after bonding expose
10、 for 24 h at 38 +/- 2 C and 95 +/- 5% relative humidity, recondition for 2 h at 23 +/- 2 C and 50 +/- 5% relative humidity) 3.6.2 Shear Adhesion Strength, min (FLTM BU 151-01, Method A, bonding area to be 10 x 25 mm, test speed 25 mm/min) Failure in the base material prior to failure of the adhesive
11、 constitutes a pass. Original 15 N/cm2 After Heat Aging (14 days at 80 +/- 2 C) 3 N/cm2 ENGINEERING MATERIAL SPECIFICATION WSS-M15P36-A2 Printed copies are uncontrolled Copyright 2007, Ford Global Technologies, LLC Page 3 of 4 3.6.3 Cold Adhesion Test Test Method: Bond a 20 mm x 20 mm self adhesive
12、piece of film to a degreased aluminum foil (150 x 60 x 0.2 mm) using maximum finger pressure. Expose specimens for testing as specified below. Then expose each assembly and a 13 mm diameter mandrel for 2 h at -40 +/- 2 C in a cold box. While still in the cold box bend the specimen with the film faci
13、ng outwards through an angle of 180 around the mandrel within 1 second. Exposure conditions: 2 hours conditioning No Cracking at 23 +/- 2 C and 50 +/- 5 % relative humidity 14 days at 80 +/- 2 C No Cracking 3.6.4 Environmental Exposure After exposure, there shall be no evidence of delamination, puck
14、ering or gapping around the seal area. Any change which would cause water leakage constitutes failure. Test Method: Apply a production representative part or a 450 x 750 mm sample with a 20 mm wide peripheral band of adhesive, butyl or hot melt bead to a painted panel, using the watershield supplier
15、s recommended methods. Condition the bonded assembly for 24 h at 23 +/- 2 C and 50 +/- 5% relative humidity. Alternate Method: (PE sheet base material): Prepare a U-channel test specimen of the sheet with the adhesive band 20 +/- 2 mm wide (butyl or hot melt bead). The U shall be 100 +/- 2 mm high w
16、ith the top opening between the parallel sides 70-80 mm wide. Apply the test specimen to a painted panel using the watershield suppliers recommended methods. Condition the bonded assembly for 24 h at 23 +/- 2 C and 50% relative humidity. Expose the assembly to the following environmental cycle: 5 h
17、at - 40+/- 2 C 30 min at 23 +/- 2 C and 50% R.H. 5 h at 80 +/- 2 C 30 min at 23 +/- 2 C and 50% R.H. 2 h at 50 +/- 2 C and 95 +/- 5% R.H. 30 min at 23 +/- 2 C and 50% R.H. 5 h at - 40+/- 2 C 30 min at 23 +/- 2 C and 50% R.H. 5 h at 80 +/- 2 C 3.6.5 Hydrostatic Pressure Resistance No leakage (ASTM D
18、751, Method A, Procedure 1) Raise the pressure at a rate of 10 mm/s to a maximum of 500 mm pressure. Sample Preparation: Cut a 25 x 25 mm sample of adhesive coated composite, bead of butyl or hot melt, and apply over the 12.5 mm diameter hole in the center of a production representative paint panel
19、cut to a size suitable for the test machine being use. ENGINEERING MATERIAL SPECIFICATION WSS-M15P36-A2 Printed copies are uncontrolled Copyright 2007, Ford Global Technologies, LLC Page 4 of 4 3.7 BLOCKING After test, the specimens must not show any evidence of excessive adhesion (tackiness) and wh
20、en the test assembly is separated there must be no sign of surface defects. Test Method: Six 100 x 100 mm test specimens (including interleaves where applicable) are stacked on top of each other and placed between two glass plates. A weight of 4.0 kg mass is placed on top of the assembly which is pl
21、aced in a mechanical convection oven maintained at 80 +/- 2 C for 3 h. Remove and immediately separate the 3 top test specimens and examine. 3.8 APPEARANCE When a foamed material is used, the foam cell structure must be visible in all areas of the part. In addition, no area larger than 275 mm2 is al
22、lowed to be less than the minimum thickness specified on the engineering drawing/document. The watershield must not be able to collapse on itself in any location. No holes, voids, perforations or tears are permitted. 3.9 REPAIRABILITY The material must be capable of being heat sealed, ultrasonically
23、 welded, taped or glued under normal production conditions to the appropriate other materials released for production and/or to itself, without compromising its ability to pass the requirements of this specification. 3.10 STORAGE STABILITY Material supplied in cut form shall not shrink more than 0.5
24、% during warehouse storage of 14 days, out of direct sunlight, at ambient temperatures between 5 C and 32 C. 5. GENERAL INFORMATION The information given below is provided for clarification and assistance in meeting the requirements of this specification. 5.1 RECYCLING CODE XXX The recycling code shall be determined by the construction of the component. Use latest publication of SAE J1344 - Marking of Plastic Parts to define correct materials symbol, or combination of symbols to mark parts for subsequent recycling.
