1、 ENGINEERING MATERIAL SPECIFICATIONMaterial Name Specification NumberDate Release No. Release/Revision1991 06 03 EP00E01089485000 Revised 3.4, 3.5 W. Scholz Conc. J.Schult1990 02 01 C01031532 Released B. Lange concurred J. SchultWP 3948-a Page 1 of 5 ADHESIVE. POLYCHLOROPRENE, CONTACT ESK-M2G340-AWA
2、TER DISPERSION, AIR DRYING1. SCOPEThe material defined by this specification is a sprayable polychloroprenebase, water dispersed contact adhesive.2. APPLICATIONThis specification was released originally for material to bond foam backedheadlining cloth to ABS panel for C-pillar covering.3. REQUIREMEN
3、TS3.1 STATISTICAL PROCESSSupplier must conform to the requirements of Ford Quality SystemStandard Q-101. A mutually acceptable Control Plan as describedtherein is required for material/source approval. Appropriatestatistical tools must be used to analyze process/product data sothat variation in the
4、final product is continuously reduced.3.2 INFRARED SPECTROPHOTOMETRY AND/OR THERMAL ANALYSISFord Motor Company, at its option, may conduct infrared and/orthermal analysis of material/parts supplied to this specification.The IR spectra and thermograms established for initial approval shallconstitute
5、the reference standard and shall be kept on file at thedesignated material laboratory. All samples shall produce IR spectraand thermograms that correspond to the reference standard when testedunder the same conditions.3.3 CONDITIONING AND TEST CONDITIONSAll test values indicated herein are based on
6、material conditioned ina controlled 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.NOT TO BE USED FOR NEW DESIGN2015 01 07 N Status No replacement named L. Sinclair, NAENGINEERING MATERIA
7、L SPECIFICATIONESK-M2G340-AWP 3948-b Page 2 of 5 3.4 UNDRIED MATERIAL PROPERTIES3.4.1 Color Grey3.4.2 Solids, min 45 %(FLTM BV 150-10, except2 g, 6 h at 105 C)3.4.3 Ash, max 2.5 %(FLTM BV 150-10)3.4.4 Density at 23 C 1.00 - 1.15 kg/L(ASTM D 1475)3.4.5 pH-Value 7.5 - 8.7(ASTM E 70)3.4.6 Viscosity at
8、23 C at 2,5 rpm 25 - 34 Pa.sat 5 rpm 15 - 22 Pa.sat 10 rpm 8 - 14 Pa.sTest Method:1. Brookfield viscosi meter RVT, helipath stand, spindle No.T/A.2. Condit ion the material under test at 23 C and let thematerial rest for 30 minutes.3. Sta rt measuring with undisturbed material at a dippingdepth for
9、the spindle of 25 mm at 2,5 rpm.4. Af ter reaching the third time the deepest spindlepos ition, continue measuring in the same way atfrequencies of 5 rpm and 10 rpm.5. Rec ord the values for each frequency at the lowestspindle position (50 mm).6. The ave rage result as calculated from single values
10、ateach frequency shall conform to the requirementsspecified above.All samples shall produ ce flow diagrams established by usingrotational test equipment as Physica, Haake, Epprecht,Rheometrix etc. to identify characteristic of material.3.4.7 QualityThe material shall be a smooth homogeneous mixtu re
11、, free fromforeign materials and properties detrimental to normalproducti on use. The material must be capable of regainingit s initial physical characteristics and performance afterrecirculation or agitation prior to use.ENGINEERING MATERIAL SPECIFICATIONESK-M2G340-AWP 3948-b Page 3 of 5 3.4.8 Stor
12、age Stability 4 months(From date or receipt at Ford)During the storage at ambient temperatures between 5 and 32C in sea led unopened containers out of direct sunlight themateri al as supplied shall not liver and must be free fromsettling which cannot be dispersed by normal agitation.Af ter the stora
13、ge the material must pass all specificationrequirements.3.5 DRY MATERIAL PROPERTIES3.5.1 Peel Adhesion(FLTM BU 151-01, Method B1, Fig. 6)Preparation of Test Assemblies:Apply ad hesive on ABS panels (acc. to ESK-M2D456-B) and onfoam side of trim cloth (acc. to ESD-M5H13-A/B) at a coatingweight of app
14、rox. 150 to 200 g/m2. Condition cl oth specimensat an air temperature of 23 +/- 2 C for 30 minutes and ABSspecimens at an air temperature of 60 +/- 2 C fo r 15 minutes.Assemble the ABS parts with cloth specimens and firmly presstogether with a pressure of 0,3 - 0,5 MPa.3.5.1.1 Initial Peel Adhesion,
15、 min 5,0 N/cm or(Measured 10 minutes after break ofassembling.) substrate3.5.1.2 Original Peel Adhesion, min 6,3 N/cm or(Measured 72 h after assembly) break ofsubstrate3.5.1.2.1 Measured at 1,2 N/cm or90 +/- 2 C*, min. break ofsubstrate3.5.1.2.2 Measured at No loss based-20 +/- 2 C* on measuredvalue
16、 to3.5.1.2* Samples shall be conditioned for a minimum of 30 minutes attest temperature prior to measurement.3.5.2 Peel Adhesion after Aging3.5.2.1 Heat Aging - 60 %(14 d at 90 +/- 2 C and based on72 h at 23 +/- 2 C) 3.5.1.2 valueENGINEERING MATERIAL SPECIFICATIONESK-M2G340-AWP 3948-b Page 4 of 5 3.
17、5.2.2 Humidity Aging, max. 1,2 N/cm(14 d at 38 +/- 2 C and or break of98 % R.H., 1 h at substrate23 +/- 2 C)3.5.2.3 Environmental Cycling 5,0 N/cm orbreak ofsubstrateSpecimens are exposed to 8 cycles of the following sequenceand then stored for 1 h at 23 +/- 2 C before testing.1 Cycle =16 h at 38 +/
18、- 2 C and98 +/- 2 % R.H.4 h at -40 +/- 2 C4 h at 90 +/- 2 CAfter four cycles, specimens to be stored at 23 +/- 2 C for72 h. Repeat four cycles aging to end.3.6 SOFTENING POINT, min 120 C(ASTM D 816)Test specimens according to 3.5.1. Maintain oven temperature at 60C for 15 minutes and then increase 2
19、,5 C/5 minutes until bondfailure.)3.7 STAINING(FLTM BO 115-01)Prepare specimens accor ding to 3.5.1. Expose specimen together witha non b onded part of cloth for 96 h to the Fluorescent SunlampCabinet. Staining shall not be more severe than on the untreatedcloth.3.8 ADDITIONAL REQUIREMENTSSpecific r
20、equirements 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.3.9 SUPPLIERS RESPONSIBILITYAl
21、l materials supplied to this specification must be equivalent inal l characteristics to the material upon which approval wasoriginally granted.ENGINEERING MATERIAL SPECIFICATIONESK-M2G340-AWP 3948-b Page 5 of 5 Pr ior to making any changes in the properties, composition,co nstruction, color, process
22、ing or labelling of the materialorig inally approved under this specification, whether or not suchchang es affect the materials ability to meet this specificationrequir ements, the Supplier shall notify Purchasing, Toxicology andthe affected Materials Engineering activity of the proposed changesand
23、obtain the written approval of the Materials Engineeringactivity. Test data, t est samples and a new code identification areto be submitted with the request.Substance restrictions imposed by law, regulations or Ford isapplic able to the materials addressed by this document. Therestrictions are defin
24、ed in Engineering Material Specification WSS-M99P9999-A1, unless a d ifferent suffix (e.g., A2 or A3) is specifiedon the engineering document for the application.4. APPROVAL OF MATERIALSMat erials defined by this specification must have prior approval by theresp onsible Materials Engineering activit
25、y. Suppliers desiring approvalof thei r materials shall first obtain an expression of interest from theaffec ted Purchasing, Design and Materials Engineering activity. Uponrequest, the supplier shall submit to the affected Materials Engineeringactivity its own laboratory rep ort to the specification (test results, notnominal values), the material designation and code number, and testspecim ens for Ford evaluation. Upon approval, the material will be addedto the Engineering Material Approved Source List.
