1、 ENGINEERING MATERIAL SPECIFICATION Material Name Specification Number Date Action Revisions 2002 12 10 Revised Para 3.0 inserted ; Para 3.1, 3.2, 3.3, 3.7, 3.8, 4 deleted 1999 09 08 Activated S. Lenda Printed copies are uncontrolled Page 1 of 3 Copyright 2002, Ford Global Technologies, Inc. ADHESIV
2、E, STRUCTURAL, FAST CURING, AIR DRY WSS-M2G409-A 1. SCOPE The material defined by this specification is a two-step anaerobic, polyacrylate resin that cures readily between parallel, closely mating (0.003 in. bondline), smooth-surface materials. This adhesive develops handling strength in approximate
3、ly 10 sec. 2. APPLICATION This specification was originally released for a material used for bonding resin-impregnated, sintered stainless steel interior rear view mirror bracket buttons to windshields for service replacement. This specification replaces ESB-M2G176-A. 3. REQUIREMENTS 3.0 STANDARD RE
4、QUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and part producers must conform to the Companys Standard Requirements For Production Materials (WSS-M99P1111-A). 3.4 QUALITY The material shall be a smooth, homogeneous mixture, free from foreign materials and properties detrimental to normal pr
5、oduction operations. 3.5 MATERIAL PROPERTIES COMPONENT Adhesive Accelerator 3.5.1 Color Light amber Light brown 3.5.2 Viscosity (MPas) 850-1200 N/A ASTM D 1084 (Method B) 3.5.3 Density (kg/L) 1.03-1.08 0.77-0.81 3.5.4 Shelf Life, max. 32 C 1 year 1 year 30 days(opened) 3.5.5 % Solids, min. 75 3 ASTM
6、 D 2834 (except Temp 102 C for 3 h) ENGINEERING MATERIAL SPECIFICATION WSS-M2G409-A Page 2 of 3 Copyright 2002, Ford Global Technologies, Inc. 3.5.6 % Ash, max. 0.5 0.1 ASTM D 5040 (except Temp 760 +/- 30 C for 1 h) 3.6 PERFORMANCE PROPERTIES ASTM D 1002 (0 gap, 12.7 mm overlap, 1.3 mm/min jaw separ
7、ation rate) Sample preparation: Thoroughly clean both surfaces with hexane. For cyanoacrylate adhesives, apply a small drop of adhesive to the prepared surface of one lap-shear specimen. For two part adhesives which are not mixed prior to application, apply as follows: apply a bead of Part A to the
8、prepared surface of one lap-shear specimen and a bead of Part B to the prepared surface of the mating lap-shear specimen such that when the lap-shear specimens are mated, the two beads contact each other fully. Apply sufficient quantities of each part so as to ensure complete coverage of the prescri
9、bed bond area. Tensile Shear Strength, MPA, minimum Unaged: Steel/Steel Al/Al After 2 minutes 12.4 6.2 After 1 h 13.8 6.9 After 24 h 17.2 7.9 Aged: (Assembled test parts are aged 24 h at room temperature before exposure) Stel/Stel Al/ 88 C, 2 weeks hot* 13.8 7.0 - 29 C, 24 h, cold* 10.3 5.5 Humidity
10、 2 weeks, 6.9 4.5 38 +/- 1 C and 95 - 100 % relative humidity* 10 cycles of: * 6.9 3.45 4 h at - 29 C 4 h at 82 C 16 h humidity 30 +/- 1 C and 95 - 100 % relative humidity ENGINEERING MATERIAL SPECIFICATION WSS-M2G409-A Page 3 of 3 Copyright 2002, Ford Global Technologies, Inc. *Sample shall be tes
11、ted within 30 seconds after removal *Sample shall be tested after 1 h but prior to 4 h at room temperature 5. GENERAL INFORMATION The information given below is provided for clarification and assistance in meeting the requirements of this specification. MATERIAL REFERENCE Steel - Cold rolled, no surface coating. Aluminum - AA 2024, no surface coating.
