1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2007 11 21 Revised Revised 2. B. Witkowski 2005 09 30 Revised Inserted 3.0; Deleted 3.1, 3.2, 3.3, 3.14, 3.15, 4 1991 06 01 Released NBQ7E10117602000 W. Curtiss; E. Rezendes; M. Perchard Printed copies are uncontrolled Copyright 2007, Ford Glo
2、bal Technologies, LLC Page 1 of 4 TAPE, LOW DENSITY POLYVINYL CHLORIDE FOAM WSB-M3G102-B PRESSURE SENSITIVE, SUPERSOFT TAPE, LOW DENSITY POLYVINYL CHLORIDE/NITRILE FOAM, WSB-M3G102-B2 PRESSURE SENSITIVE, ULTRA SOFT 1. SCOPE The material defined by WSB-M3G102-B is a soft, closed cell polyvinyl chlori
3、de foam tape with one side adhesive coated and the other protected by a coated release paper. Note: This product is manufactured so that as the tape is unrolled the adhesive surface is exposed. While rolled, the top surface of the release paper serves as a liner to protect the adhesive and prevent s
4、ticking. The release paper remains on the adhesive free surface of the foam tape and is not removed until after installation. The material defined by WSB-M3G102-B2 is a soft, closed cell polyvinyl chloride/nitrile foam tape with one side adhesive coated and protected by a coated release paper. Note:
5、 This material can be supplied extruded into very complex cross sections, die cut or in roll form. 2. APPLICATION These specifications were released originally for materials used as a filler between exterior moldings and painted metal to seal against air leaks, water leaks, and wind noise. They are
6、used in areas where low force to compress is required. The pressure sensitive adhesive used in these materials is often intended as an assembly aid. The adhesive strength of this material may not be adequate where the foam material is not mechanically retained in a final assembly. The design and man
7、ufacturing process should be evaluated for failure modes with respect to exceeding adhesion limits. WSB-M3G102-B2 may also be used to seal areas where the design requires complex extrusions. 3. REQUIREMENTS 3.0 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and part producers must
8、 conform to the Companys Standard Requirements For Production Materials (WSS-M99P1111-A). 3.4 DIMENSIONS (WSB-M3G102-B2) Cross sections/dimensions as specified on the Engineering drawing. 3.5 DENSITY (ASTM D 3574, Test A) The density tolerance for any given supplier shall be +/- 15 kg/m3 based on th
9、e recorded density of the original approved production sample. See para 5.2. ENGINEERING MATERIAL SPECIFICATIONWSB-M3G102-B/B2 Printed copies are uncontrolled Copyright 2007, Ford Global Technologies, LLC Page 2 of 4 3.6 TENSILE STRENGTH, min 70 kPa (ASTM D 3574, Test E, 6.4 mm material thickness) 3
10、.6.1 Elongation, min 120% 3.7 COMPRESSION DEFLECTION (ASTM D 3574, Test C) 3.7.1 Instantaneous, max 7.0 kPa 3.7.2 After 60 s 1.0 - 3.5 kPa 3.8 COMPRESSION SET, max 90% (ASTM D 1667, except at 70 +/- 1 C for 22 h) Ply tape adhesive to adhesive for 13 mm/min thickness and measure recovered height 30 m
11、inutes after clamps are removed. 3.9 WATER SEAL, min No leak after 60 minutes Test Method: Wipe two glass plates with mineral spirits using a clean cotton cloth. Shape a 12 x 12 x 300 mm sample into a “U“ configuration between the surfaces of the glass plates. The plates should be spaced and clamped
12、 so that the material between them is compressed 30% of the original thickness for 3.9.1 and 50% of the original thickness for 3.9.2. After the assemblies have been processed as specified below, pour water into the “U“ so that the deepest point measures 100 mm. Examine the assembly after 60 minutes.
13、 3.9.1 Condition the assembly for 30 minutes at 23 +/- 2 C. 3.9.2 Expose the assembly for 30 minutes at 121 +/- 2 C, then cool to 23 +/- 2 C prior to test. 3.10 LOW TEMPERATURE FLEXIBILITY No cracking Test Method: Condition a minimum of three 150 mm samples of tape as received at -30 +/- 1 C for 4 h
14、 and bend the samples 180 around a temperature conditioned 6.4 mm diameter mandrel. 3.11 PAINT STAINING No migration staining Test Method: Securely attach a 50 x 100 mm sample of the material to a 100 x 150 mm steel panel coated with currently released body enamels with top surface of foam against t
15、he paint. Expose the assembly for 500 h in a Q.U.V. cabinet described in SAE J2020. Examine for any evidence of staining beyond the boundaries of the test specimen. ENGINEERING MATERIAL SPECIFICATIONWSB-M3G102-B/B2 Printed copies are uncontrolled Copyright 2007, Ford Global Technologies, LLC Page 3
16、of 4 3.12 PRESSURE SENSITIVE ADHESION, min (ASTM D 1000) 3.12.1 Adhesion to Stainless Steel 440 N/m width (SAE J1434) If foam fails internally before peeling occurs, the maximum values at the point of internal failure must be at least as great as 440 N/m width minimum. 3.12.2 Adhesion to Painted Met
17、al 440 N/m width (Substrates per para 5.3) If foam fails internally before peeling occurs, the maximum values at the point of internal failure must be at least as great as 440 N/m width minimum. 3.12.3 Adhesion to Stainless Steel (SAE J1434) Heat Resistance No adhesion failure Environmental Cycling
18、Resistance No adhesion failure Test Method: Apply 200 - 250 mm strips of tape as received to 2 stainless steel panels, adhesive to metal, and roll each strip once in each direction with a 2 kg roller. Remove release paper and air dry 24 h at 23 +/- 2 C. For heat resistance test, place 1 panel in an
19、inverted position in an air mechanical convection oven for 30 minutes at 120 +/- 2 C. For environmental cycling resistance test, subject other panel to 5 consecutive cycles of the following conditions: o 16 h at 38 +/- 1 C and 95 - 100% R.H. o 4 h at - 30 +/- 1 C o 4 h at 90 +/- 2 C 3.13 LINER RELEA
20、SE 2 - 11 N/m width Test Method: Use ASTM D 1000, except apply the unlined adhesive side of the tape to a clean metal panel and measure the force required to peel the liner from the tape. 3.14 FUNCTIONAL APPROVAL Materials being evaluated for approval to this specification shall be subjected to a pr
21、oduction trial. Functional trial results must be approved by the affected assembly operation and Design Engineering. Results shall be made available to Materials Engineering prior to material approval and release. ENGINEERING MATERIAL SPECIFICATIONWSB-M3G102-B/B2 Printed copies are uncontrolled Copy
22、right 2007, Ford Global Technologies, LLC Page 4 of 4 5. GENERAL INFORMATION The information given below is provided for clarification and assistance in meeting the requirements of these specifications. 5.1 COLOR Black or as specified on Engineering Drawing 5.2 DENSITY - ORIGINALLY APPROVED 95 - 125 kg/m3 PRODUCTION MATERIAL 5.3 PAINT SUBSTRATES ESB-M33J3-A1/A2 - Basecoat/clearcoat system or equivalent. ESB-M33J100-A/A2 - High solids or equivalent.
