1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2004 09 10 Activated A. Latado Printed copies are uncontrolled Copyright 2004, Ford Global Technologies, LLC Page 1 of 4 ADHESIVE, SEALER, SYNTHETIC RUBBER, COLD APPLIED, WSS-M2G413-A 15 - 35 C, HEAT CURING 1. SCOPE The materials defined by th
2、is specification are solvent free, spot weldable adhesives and sealers. 2. APPLICATION This specification was released originally for materials used to bond sheet metal body parts. The materials are applicable on oiled surfaces. This specification was released originally for materials used to bond/s
3、eal rear wheelhouse to side panel, roof bow to roof, sliding roof frame to roof, etc. It cures during the electrocoat baking process at 175 C. 3. REQUIREMENTS 3.1 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and part producers must conform to the Companys Standard Requirements F
4、or Production Materials (WSS-M99P1111-A). 3.2 COLOR Black or gray, or as specified on Engineering Drawing 3.3 DENSITIY AT 20 C See Initial Sample (ASTM D 792) +/- 0.05 g/cm33.4 SOLIDS, min 99.0% (FLTM BV 150-10) 3.5 ASH, max 47.0% (FLTM BV 150-10) 3.6 VISCOSITY 47.0% (FLTM BV 103-01, nozzle 2 mm ID,
5、 conditioning time up to measurement 30 min, at test temperature. Line pressure 4 bar) 3.6.1 As received 300 500 S 3.6.2 After aging 300 600 S (14 days at 30 +/- 2 C) ENGINEERING MATERIAL SPECIFICATIONWSS-M2G413-A Printed copies are uncontrolled Copyright 2004, Ford Global Technologies, LLC Page 2 o
6、f 4 3.7 WATER ABSORPTION, max 0.5% (FLTM BV 153-07) 3.8 SHEAR ADHESION, min Cohesion failure (FLTM BV 154-03, Method B) Prepare test specimens according to section A for oiled surfaces, coating thickness 3.0 mm. Cure according to FLTM BV 150-05, Table 1, minimum and maximum cycle. 3.8.1 At 23 +/- 2
7、C 120 N/cm2 3.8.2 At 90 +/- 2 C 80 N/cm23.8.3 At -30 +/- 2 C 140 N/cm23.9 PEEL ADHESION, min Cohesion failure (FLTM BV 154-03, Method C) Prepare test specimens according to section A for oiled surfaces, coating thickness 3.0 mm. Cure according to FLTM BV 150-05, Table 1, minimum and maximum cycle. 3
8、.9.1 At 23 +/- 2 C 40 N/cm 3.9.2 At 90 +/- 2 C 30 N/cm 3.9.3 At -30 +/- 2 C 80 N/cm 3.10 HARDNESS DUROMETER A 35 - 50 (ISO 868, 3 s dwell) Test Method: Prepare a test panel (300 x 100 x 0.8 -0.9 mm) according to FLTM BZ 150-11, oiling grade Normal. Apply a ribbon of test material (250 x 30 x 5 mm) t
9、o the Test Panel. Conditioning: 10 minutes at 23 +/- 2 C Baking: 30 minutes at 175 +/- 2 C Conditioning: 4 h at 23 +/-2 C 3.11 FLEXIBILITY AFTER AGEING No loss of adhesion (FLTM BV 153-04, Method 4 3b, and no chipping exceptions noted below) Test panel dimensions: 300 x 100 x 0.8 - 0.9 mm Conditioni
10、ng: 2 h at 23 +/-2 C Test Temperature: -30 +/- 2 C; Mandrel diameter: 100 mm. ENGINEERING MATERIAL SPECIFICATIONWSS-M2G413-A Printed copies are uncontrolled Copyright 2004, Ford Global Technologies, LLC Page 3 of 4 3.12 FLAMMABILITY Self extinguishing (FLTM BV 159-02, Method A, within 5 s. No except
11、ions noted below) corrosion allowed Material Thickness: 1.0 - 1.2 mm Immediately after welding, separate the welded parts using a test fixture according to FLTM BV 159-01, Fig. 4. 3.13 CORROSION RESISTANCE No corrosion or (ASTM B 117) blistering at the border line sealer/EC/steel Prepare test assemb
12、lies according to FLTM BV 159-02, Method A. Material thickness 1.0 - 1.2 mm. After conditioning for 2 h at 23 +/-2 C wash, phosphate and electrocoat under current process conditions. Cure according to FLTM BV 150-05, Table 1, minimum and maximum baking cycle. After 24 h conditioning at room temperat
13、ure, expose to the salt spray for 480 h. Then remove from salt spray and separate the welded assemblies using a test fixture shown in FLTM BV 159-01, Fig. 4, and evaluate. 3.14 RESISTANCE AGAINST WASH AND No dissolution PHOSPHATING SOLUTION of material or lifting from panel Test Method: Prepare a te
14、st panel (300 x 100 x 0.8 -0.9 mm) according to FLTM BZ 150-11, oiling grade Normal. Apply a ribbon of test material (250 x 30 x 5 mm) to the panel. Condition for 2 h at 23 +/- 2 C. Then wash, phosphate and electrocoat the test panel under current process conditions. 3.15 FLOW RATE No flow permitted
15、 (FLTM BV 153-01, Method A, exceptions noted below) Test Method: Prepare panels according to FLTM BZ 150-11, oiling grade Normal. Apply a bead of 8 mm diameter and bake 30 minutes at 110 +/- 2 C. 3.16 WETTING (FLTM BV 153-08, Method A) The paint film shall cover the sealer with a continuous film. 3.
16、17 VOLUME EXPANSION It shall be determined with the Initial Sample and shall not exceed 15%. Structure after baking: If adhesive expands during the curing process, it shall form a closed skin. Any cellular structure shall be fine without large voids. ENGINEERING MATERIAL SPECIFICATIONWSS-M2G413-A Pr
17、inted copies are uncontrolled Copyright 2004, Ford Global Technologies, LLC Page 4 of 4 The volume expansion shall be investigated under both minimum and maximum baking cycles per FLTM BV 153-07. V2 - V1 It is defined as: Volume Expansion = - x 100% V1 Where: V1 = Volume of unbaked adhesive V2 = Vol
18、ume of baked adhesive 3.18 QUALITY The adhesive shall be a smooth, homogeneous mixture, free from foreign materials. The material must be adaptable for application in accordance with the appropriate Ford Motor Company Process Specification and must be compatible with all related materials. 4. GENERA
19、L INFORMATION The information given below is provided for clarification and assistance in meeting the requirements of this specification. 4.1 STORAGE STABILITY 6 months The material must be stable during storage at temperatures between 5 C and 25 C. 4.2 OPEN ASSEMBLY TIME As specified by (At the req
20、uired operation temperature) the supplier Open assembly time is the maximum time interval from initial application of the adhesive to the completion of the part assembly for bonding. 4.3 MATERIAL REFERENCE All related materials used for approval of adhesives according to this specification, e.g. paint materials or metallic substrates, shall be noted in the Initial Sample Report of the adhesive.
