1、 ENGINEERING MATERIAL SPECIFICATION Material Name Specification Number Date Action Revisions 2003 01 17 Revised Para 3.0 inserted ; Para 3.1, 3.2, 3.3, 3.14, 4 deleted 1992 02 03 EP00E01076261000 Released K. Wolters J. Schult Printed copies are uncontrolled Page 1 of 3 Copyright 2002, Ford Global Te
2、chnologies, Inc. ADHESIVE, HOT MELT, SYNTHETIC RESIN, HOT WSK-M2G237-B2 APPLIED 170 - 190 C 1. SCOPE The material defined by this specification is a heat activated nonsolvent synthetic resin type adhesive with good hot tack and good high and low temperature resistance. 2. APPLICATION This specificat
3、ion was originally released for material used to bond polyethylene backed polypropylene carpet to mineral filled polypropylene door trim panels. 3. REQUIREMENTS 3.0 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and part producers must conform to the Companys Standard Requirements
4、 For Production Materials (WSS-M99P1111-A). 3.4 COLOR Amber oas specified on Engineering Drawing 3.5 SOLIDS, min 96 %(FLTM BV 150-10) 3.6 DENSITY Initial Sample +/- (ASTM D 792) 0.05 g/cm33.7 SOFTENING RANGE Above 140 C (ASTM E 28, ring and ball apparatus) 3.8 VISCOSITY, mPa.s (ASTM D 4402, Brookfie
5、ld RVF, Spindle No. SC4/27) 180 +/- 2 C, 10 rpm 4,500 22,000 Must be within +/- 20 %of initalsampleENGINEERING MATERIAL SPECIFICATION WSK-M2G237-B2 Page 2 of 3 Copyright 2002, Ford Global Technologies, Inc. 3.9 PEEL ADHESION 90 Test method: 3 test specimens for each exposure condition. Prepare test
6、assemblies on substrates per 4.4 Apply a 6 mm bead of the adhesive at the application temperature of 170 - 190 C to a 50 x 300 mm plastic substrate section. Immediately place a 50 x 380 mm carpet section over the adhesive and roll once forward and once backward with a roller per ASTM D 1000. Roller
7、speed 50 mm/s. Allow to cool to 23 +/- 2 C for 30 minutes prior to determination of the original value. After each exposure, allow conditioning for 30 minutes at 23 +/- 2 C. Conduct 180 hand peel adhesion tests with a Hunter gage or equivalent. Pull at a rate of 25 mm/minute. 3.9.1 Original 525 N/m
8、3.9.2 After Environmental Cycling 525 N/m (FLTM BQ 104-07, Procedure 5, 5 cycles) 3.9.3 After Heat Aging 876 N/m (14 days at 70 +/- 2 C) 3.9.4 After Humidity Aging 88 N/m (14 days at 38 +/- 2 C and 95 - 100 % relative humidity) 3.9.5 After Cold Slam Adhesion Cycles 525 N/m (FLTM BV 101-02, 100 slams
9、) 3.10 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. 3.11 ODOR Shall be free from
10、objectionable or irritating odors, both at room temperature and at application temperature. 3.12 FOGGING (SAE J1756, 3 h at 100 C cooling plate, post test conditioning 1 h and 16) Fog Number, min 90 Formation of clear film, droplets or crystals is cause for rejection. ENGINEERING MATERIAL SPECIFICAT
11、ION WSK-M2G237-B2 Page 3 of 3 Copyright 2002, Ford Global Technologies, Inc. 3.13 PERFORMANCE In addition to the requirements of this specification, the bonded assembly shall meet all requirements of performance specification WSB-M15P4-D. 5. GENERAL INFORMATION The information given below is provide
12、d for clarification and assistance in meeting the requirements of this specification. 5.1 STORAGE STABILITY Indefinite The material must be stable during storage at temperatures between 5 and 49 C. 5.2 DEGRADATION POINT Above 210 C If the temperature of the adhesive exceeds the degradation point, th
13、e adhesive will decompose and all physical properties become adversely and permanently affected. The material is not to be used once the degradation point has been exceeded. 5.3 OPEN ASSEMBLY TIME, min 15 s(At an operation temperature of 170 - 190 C) Open assembly time is the maximum time interval f
14、rom initial application of the adhesive to the completion of the part assembly for bonding. 5.4 SUBSTRATES Mineral filled polypropylene WSK-M4D556-A Polyethylene backed polypropylene As specified on carpet Engineering Drawing 5.5 MATERIAL REFERENCE All related materials as well as application parameter, used for approval of adhesive according to this specification, e.g. cleaner, substrate materials or carpet, shall be noted in the Initial Sample Report of the adhesive.
