1、 ENGINEERING MATERIAL SPECIFICATION Material Name Specification Number Date Action Revisions 2002 09 12 Revised Updated and renumbered 1991 02 01 C01089481000 Released K. Wolters Printed copies are uncontrolled Page 1 of 3 Copyright 2002, Ford Global Technologies, Inc. ADHESIVE, POLYAMIDE, HOT APPLI
2、ED 170 - 180 C WSK-M2G270-B 1. SCOPE The material defined by this specification is a hot melt adhesive with high filler content, based on polyamide. 2. APPLICATION This specification was originally released for material used to bond hardboard parts of the ventilation air duct. 3. REQUIREMENTS 3.1 ST
3、ANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and part producers must conform to the Companys Standard Requirements For Production Materials (WSS-M99P1111-A). 3.2 COLOR Black, oras specified on Engineering Drawing 3.3 SOLIDS, min 99 %(FLTM BV 150-10) 3.4 ASH, max 44 %(FLTM BV 150-1
4、0) 3.5 DENSITY Initial Sample +/- (ASTM D 792) 0.05 g/cm3; max 1.62 g/cm33.6 SOFTENING POINT 140 - 155 C (ASTM E 28, ring and ball apparatus) ENGINEERING MATERIAL SPECIFICATION WSK-M2G270-B Page 2 of 3 Copyright 2002, Ford Global Technologies, Inc. 3.7 VISCOSITY (ASTM D 4402, Brookfield RVT/D Thermo
5、sel, Spindle No. SC4/27 or equivalent equipment) 160 C: 1 rpm 94 000 - 126 000 mPa.s 170 C: 2.5 rpm 52 000 - 73 000 mPa.s 180 C: 2.5 rpm 35 000 - 53 000 mPa.s 3.8 SHEAR STRENGTH, min (FLTM BU 151-01, Method A, Figure 4) Test Method: Apply adhesive at an application temperature of 170 180 C to a 25 x
6、 10 mm area of a 25 x 75 mm non-impregnated canvas fabric piece to a thickness of approximately 1 mm. Immediately after adhesive application place the adhesive side of the canvas specimen on a hard board panel of 60 x 150 mm in production thickness and roll the overlapped area once with a 2 kg rolle
7、r per ASTM D 1000. 3.8.1 Original Value, min 4 MPa or break of substrate After 1 h at 23 +/- 2 C determination of shear strength at a rate of 25 mm/minute. 3.8.2 After Aging, min 4 MPa or break of substrate Age specimen for 14 days at 90 +/- 2 C and 14 days at 100 +/- 2 C. Evaluation after condition
8、ing 1 h at 23 +/- 2 C. No loss of shear strength based on the original measured value. 3.8.3 After Environmental Cycling, max - 15 % Specimen is exposed to 5 cycles of the following sequence: 16 h at 38 +/- 2 C and 98 +/- 2 % relative humidity 4 h at - 40 +/- 2 C 4 h at 90 +/- 2 C Maximum 15 % loss
9、of shear strength based on the original measured value. ENGINEERING MATERIAL SPECIFICATION WSK-M2G270-B Page 3 of 3 Copyright 2002, Ford Global Technologies, Inc. 3.8.4 After Humidity Aging, max - 30 % Specimen is exposed to the following conditions: 72 h at 38 +/- 2 C and 98 +/- 2 % relative humidi
10、ty, 1 h at 23 +/- 2 C. Maximum 30 % loss of shear strength based on the original measured value. 3.9 FOGGING (SAE J1756, 3 h at 100 C heating, 21 C cooling plate, post test conditioning 1 h and 16 h) Fog Number, min 60 Formation of clear film, droplets or crystals is cause for rejection 3.10 QUALITY
11、 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 compatible with all related materials. 4. GENERAL INFORMATION The information given below
12、is provided for clarification and assistance in meeting the requirements of this specification. 4.1 STORAGE STABILITY 12 months The material must be stable during storage at temperatures between 5 C and 32 C. 4.2 RECOMMENDED OPERATION TEMPERATURE 170 - 180 C 4.3 DEGRADATION POINT 190 C If the temper
13、ature of the adhesive exceeds the degradation point, the 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. 4.4 OPEN ASSEMBLY TIME 60 s(At an operation temperature of 170 - 180 C) Open assembly time is the maximum time interval from initial application of the adhesive to the completion of the part assembly for bonding.
