1、 ENGINEERING MATERIAL SPECIFICATIONMaterial Name Specification NumberDate Release No. Release/Revision1993 03 19 NGA1E10269419002 Revised & Updated C. C. Gray1987 03 12 RD885100-115 Released C. Carter1977 04 13 Released B8A 6045/CH8G-DR-567521 GGWWP 3948-a Page 1 of 3 ADHESION REQUIREMENTS, CELLULAR
2、 RUBBER/POLYURETHANE ESH-M11P19-BFOAM, PRESSURE SENSITIVE FILM WITH BIOCIDE1. SCOPEThis s pecification defines the bond requirements for sponge-expandedcellular rubber or polyurethane foam gaskets of varying densities with apressure sensitive backing, treated with biocide and with or without apolyes
3、ter film backing, to plastic substrates.2. APPLICATIONThis specification was released originally for material for assembliesrequiri ng a gasket with a pressure sensitive adhesive on one side. Thepressu re sensitive adhesive is intended as an assembly aid. It should beused only where the seal is mech
4、anically retained in final assembly andwhere resistance to bacteria/fungus is required.3. REQUIREMENTS3.1 PEEL STRENGTH, Plastic Membrane to Panel, min(ASTM D 903, except as specified below)Te st Method: Standard test panel to be injection molded smoothsurfaced polypropylene ESB-M4D63-A. Adhere 150
5、mm length of the 12.7mm wide specimen to the test panel using a rubber covered steelroller. (The steel roller must be 83.0 +/- 2.5 mm in diameter and44.5 +/- 1.3 mm in width, covered with rubber approximately 6 mm inthickness having a durometer hardness of 80 +/- 5. The weight of theroller which app
6、lies pr essure to the specimen shall be 2.05 +/- 0.05kg. T he roller should be constructed so that the weight of thehandle is not added to the weight of the roller during use.) Pass theroller, without application of additional pressure, over the gasketle ngthwise once in each direction at the rate o
7、f approximately 50mm/ s. Allow 20 +/- 5 minutes before resuming test. Apply maskingtap e to the top surface of the foam to reduce the friction betweenthe foam surfaces when the specimens are bent 18 0 deg with respect tothemselves.3.1.1 As Received 0.44 N/mm width3.1.2 Heat Aged 0.44 N/mm widthTest
8、Method: Condition the test panel with the specimenadhered for 7 days in a mechanical convection oven at 88 +/-2 C. Allow a 4 h recovery at 23 +/- 2 C and 50 +/- 5 %relative humidity before determining peel strength.ENGINEERING MATERIAL SPECIFICATIONESH-M11P19-BWP 3948-b Page 2 of 3 3.1.3 Humidity Ag
9、ed 0.44 N/mm widthTest Method: Condition the test panel with the specimenadhered for 7 days at 95 - 100 % relative humidi ty and 37 +/-1 C. Allow a 4 h recovery at 23 +/- 2 C and 50 +/- 5 %relative humidity before determining peel strength.3.2 PEEL STRENGTH, Foam Rubber to Plastic Membrane(Bond must
10、 be made of a permanent adhesive)3.2.1 As Received No delaminationTest Method: Same as para 3.1, except double back eachspecimen on itself, slit through the membrane wi thout cuttingthe foam rubber, and pe el back approximately 25 mm. Activatethe machine at a jaw separation rate of 50 mm/min.3.3 BON
11、D SEPARATION No separation ofbondTest Method: Using an actual production part which has the gasketadhered (25 mm width), cut the gasket and fasten a 200 g weight tothe cut end by doubling the gasket back approximately 25 mm. Hang 3assemblies in a similar manner with the weights vertically suspendedb
12、y the gaskets for 1 h.3.4 QUALITYThe release film shall readily be removed from t he pressure sensitiveadhesive so as not to interfere with normal production processing.3.5 BACTERIA/FUNGUS RESISTANCE Must pass(ES-D8VH-19A672-AA)3.6 POLYURETHANE FOAM, Sponge As specified onExpanded Rubber engineering
13、 drawing3.7 STATISTICAL PROCESSSupplie rs must conform to the requirements of Ford Quality SystemStand ard Q-101. A mutually acceptable Control Plan as describedtherein is required for material/source approval. Appropriatestatist ical tools must be used to analyze process/product data sothat variati
14、on in the final product is continuously reduced.3.8 INFRARED SPECTROPHOTOMETRY AND/OR THERMAL ANALYSISFord Motor Company, at its option, may conduct infrared and/ortherma l analysis of material/parts supplied to this specification.The IR spectra and thermograms established for i nitial approval shal
15、lconst itute the reference standard and shall be kept on file at thedesignated material laboratory. All samples sha ll produce IR spectraand thermograms that correspond to the reference standard when testedunder the same conditions.ENGINEERING MATERIAL SPECIFICATIONESH-M11P19-BWP 3948-b Page 3 of 3
16、3.9 CONDITIONING AND TEST CONDITIONSAll test values indicated herein are based on ma terial conditioned ina control led atmosphere of 23 +/- 2 C and 50 +/- 5 % relativehumidity for not less than 24 h prior to testing and tested under thesame conditions unless otherwise specified.3.10 ADDITIONAL REQU
17、IREMENTSSpecific requirements for material and/or manufa ctured parts shall bespecified on the Engineering drawing, Engineerin g parts specificationand/or performance specifications. All critical areas with respectto these properties shall be clearly designated on the engineeringdrawing.3.11 SUPPLIE
18、RS RESPONSIBILITYAll materials supplied to this specification must be equivalent inal l characteristics to the material upon which approval wasoriginally granted.Pri or to making any change in the properties, composition,constr uction, color, processing or labeling of the materialorig inally approve
19、d under this specification, whether or not suchchange s affect the materials ability to meet the specificationrequir ements, the Supplier shall notify Purchasing, Toxicology andthe affected Materials Engineering activity of the proposed changesand obtain the written approval of the Materials Enginee
20、ringactivity. Test data, t est samples and a new code identification areto be submitted with the request.Substance restrictions imposed by law, regulations or Ford, apply tothe materials addressed by this document. The restrictions aredefined in Engineering Material Specification WSS-M99P9999-A1.4.
21、APPROVAL OF MATERIALSThis specification is intended to define the performance and/or propertiesof finished parts or systems of combined materials. An EngineeringMaterial Approved Source listin g is not applicable for this specification.Produc t Engineering materials referenced in this document and/or theaffected engineering drawing, which require prior Engine ering approval, aresh own in the Engineering Material Approved Source List under thespecification cited.
