1、 ENGINEERING MATERIAL SPECIFICATION Date Action Revisions 2013 12 12 N Status No replacement named L. Sinclair, NA 2007 06 29 Revised Inserted 3.0 1072 07 03 Released CDB8-545842-H Controlled document at www.MATS Copyright 2013, Ford Global Technologies, LLC Page 1 of 2 ADHESION REQUIREMENTS, POLYUR
2、ETHANE FOAM TO ESA-M11P19-A POLYPROPYLENE - PRESSURE SENSITIVE FILM NOT TO BE USED FOR NEW DESIGN 1. SCOPE This specification defines the bond requirements for polyurethane foam gaskets with a polyester film backing to a polypropylene substrate. 2. APPLICATION This specification was released origina
3、lly for material used for assemblies requiring a gasket with a pressure sensitive adhesive on one side. The pressure sensitive adhesive is intended as an assembly aid. It should be used only where the seal is mechanically retained in final assembly. 3. REQUIREMENTS 3.0 STANDARD REQUIREMENTS FOR PROD
4、UCTION MATERIALS Material suppliers and part producers must conform to the Companys Standard Requirements For Production Materials (WSS-M99P1111-A). 3.1 PEEL STRENGTH, PLASTIC MEMBRANE TO PANEL, min (ASTM D 903) Standard test panel to be injection molded smooth surfaced polypropylene ESB-M4D63-A. Ad
5、here 6 in (152 mm) of the 0.50 in (12.7 mm) thick specimen to the test panel using a rubber covered steel roller. The steel roller must be 3.25 +/- 0.1 in (82.6 +/- 2.5 mm) in diameter and 1.75 +/- 0.05 in (44.5 +/- 1.3 mm) in width, covered with rubber approximately 1/4 in (6 mm) in thickness, havi
6、ng a durometer hardness of 80 +/- 5. The weight of the roller which applies pressure to the specimen shall be 4.5 +/- 0.1 lb (2.04 +/- 0.05 kg). The roller should be constructed so that the weight of the handle is not added to the weight of the roller during use. Pass the roller, without application
7、 of additional pressure, over the gasket lengthwise once in each direction at the rate of approximately 2 in (50 mm)/s. Allow 20 +/- 5 min before resuming test. Apply masking tape to the surface of the foam to reduce the friction between the foam surfaces when the specimens are bent 180 deg with res
8、pect to themselves. 3.1.1 As Received 40 oz/in (0.44 N/mm) width 3.1.2 Heat Aged 40 oz/in (0.44 N/mm) width Test Method: Condition the test panel with the specimen adhered for 7 days in a mechanical convection oven at 88 +/- 1 C. Allow a 4 h recovery at 23 +/- 1 C and 50 +/- 5% R.H. before determini
9、ng peel strength. ENGINEERING MATERIAL SPECIFICATION ESA-M11P19-A Copyright 2013, Ford Global Technologies, LLC Page 2 of 2 3.1.3 Humidity Aged 40 oz/in (0.44 N/mm) width Test Method: Condition the test panel with the specimen adhered for 7 days at 95 - 100% R.H. and 37 +/- 1 C. Allow a 4 h recovery
10、 at 23 +/- 2 C and 50 +/- 5% R.H. before determining peel strength. 3.2 PEEL STRENGTH, FOAM TO PLASTIC MEMBRANE (Bond must be made of a permanent type adhesive) 3.2.1 As Received No delamination Test Method: Same as para 3.1, except double back each specimen on itself, slit through the membrane with
11、out cutting the foam, and peel back approximately 1 in (25 mm). Activate the machine at a jaw separation rate of 2 in (50 mm)/min. 3.3 BOND SEPARATION None Test Method: Using an actual production part which has the gasket adhered, (1 in (25 mm) width), cut the gasket and fasten a 200 g weight to one
12、 end by doubling the gasket back approximately 1 in (25 mm). Hang 3 assemblies in a similar manner with the weights vertically suspended by the gaskets for 1 h with no separation of bond. 3.4 QUALITY The release film shall readily be removed from the pressure sensitive adhesive so as not to interfere with normal production processing. 3.5 POLYURETHANE FOAM As specified on engineering drawing
