1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2006 05 02 N-STATUS Replaced by WSS-M99P32-B A. Reaume 2004 09 23 Revised Inserted 3.0; Deleted 3.1, 3.16, 3.17 & 4 1983 07 25 Released CLN1-ED 453461 Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 1 of 3 PO
2、LYURETHANE FOAM, ACOUSTICAL - 80 kg/m3 ESB-M2D297-A5 NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is a polyether urethane foam cast to the desired configuration. Finished parts have elastomeric sound barrier molded integrally with the foam to provide a one-piece
3、barrier/isolator composite assembly. 2. APPLICATION This specification was released originally for material used as molded dash panel and floor pan isolators for the 1984 Continental/Mark VII. The foam shall not be used in direct contact with metal temperatures exceeding 121 C. Metal contact tempera
4、tures or exposure temperatures that exceed 121 C shall employ sufficient insulation to insure that the foam is exposed to less than 121 C. 3. REQUIREMENTS Material specification requirements are to be used for initial qualification of materials. 3.0 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Mat
5、erial suppliers and part producers must conform to the Companys Standard Requirements For Production Materials (WSS-M99P1111-A). 3.2 CONSTRUCTION The cell structure of finished parts shall be free from large voids, unblown compound or hard spots. 3.3 DENSITY, +/- 10% 80 kg/m3(ASTM D 3574, Test A, se
6、ction density) 3.4 ASH CONTENT, max 4% (ASTM D 586) 3.5 WEIGHT, FINISHED PART, max As specified on engineering drawing 3.6 TENSILE STRENGTH, min 35 kPa (ASTM D 1564, Suffix T, skin on one side only) 3.6.1 Elongation, min 60% ENGINEERING MATERIAL SPECIFICATIONESB-M2D297-A5 Printed copies are uncontro
7、lled Copyright 2006, Ford Global Technologies, LLC Page 2 of 3 3.7 HEAT AGED TENSILE STRENGTH, min 25 kPa (ASTM D 1564, Suffix A, except age 48 h at 121 +/- 2 C, skin on one side only) 3.7.1 Elongation, min 45% 3.8 TEAR STRENGTH, min 0.20 N/mm (ASTM D 624, Die “C“, 12.7 mm thick, skin on one side on
8、ly) 3.9 INDENTATION FORCE DEFLECTION (ASTM D 3574, Test B) 3.9.1 IFD at 25% 85 N +/- 10% 3.9.2 IFD at 65% 365 N +/- 20% 3.10 COMPRESSION AND RECOVERY (FLTM BN 015-02) Compression, max 90% Recovery, min 90% 3.10.1 Aged 48 h at 121 +/- 2 C Compression, max 90% Recovery, min 90% 3.11 MILDEW RESISTANCE
9、- For Initial Qualification Only No visual evidence of mildew growth and no mildew odor after 7 days exposure in a humidity cabinet controlled to 100% relative humidity and 40 C. 3.12 AGED FLEXIBILITY No crumbling or embrittlement Test Method: A 51 x 152 x 12.7 mm specimen shall be subjected to the
10、following cycling, then bent 180 around a 51 mm diameter mandrel: 7 h at 83 C +/- 2 C in a mechanical convection oven, followed by 16 h at -18 +/- 2 C in a cold chamber and flexing in cold chamber. 3.13 AGED WEIGHT LOSS, max 1.5% Test Method: Weigh 100 x 100 x 25 mm sample to the nearest mg (W1). Pl
11、ace the sample in a convection oven maintained at 121 +/- 2 C for 24 h. Remove the sample and reweigh to the nearest mg (W2). W1- W2% Weight Loss = - x 100 W1ENGINEERING MATERIAL SPECIFICATIONESB-M2D297-A5 Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 3 of 3 3.14
12、 FLAMMABILITY 3.14.1 In order to comply with Federal Motor Vehicle Safety Standard No. 302, the materials, portions of components, and composites shall not burn, or transmit a flame across its surface, at a rate of more than 101 mm per min. To demonstrate compliance, the sample size and method of te
13、sting shall be in accordance with FLTM BN 024-02. 3.14.2 Performance - Environmental Aging All materials, portions of components, and composites defined by this specification that have not been treated, modified or reformulated and exceed a max burn rate of 76 mm per min as specified by the Flammabi
14、lity Lot Sampling Plan of FLTM BN 024-02, must be evaluated for permanency of the materials flame retardant properties per ESB-M25P3-A according to the accelerated environ-mental aging requirements applicable to the basic material category of this particular specification. Any material, portions of
15、components, and composites defined by this specification that have been treated, modified or reformulated to conform to Flammability Lot Sampling Plan of FLTM BN 024-02, regardless of max burn rate, must be evaluated for both permanency of materials flame retardant properties and changes in mechanic
16、al, chemical and physical properties per ESB-M25P3-A applicable to the basic materials category of this particular specification. 3.14.3 Flammability Test Program Materials, portions of components, and composites governed by this specification must also comply with the requirements of ES-D3AB-11014-
17、AA. 3.15 ACOUSTICAL PERFORMANCE Suppliers approved to this specification must have their material functionally approved by the affected Car Product Development Group for acoustical performance. This approval must be obtained before Materials and Corrosion Protection Engineering Department approval will be given. 5. GENERAL INFORMATION The information given below is provided for clarification and assistance in meeting the requirements of this specification. 5.1 SOUND ABSORPTION, % (ASTM C 384, skin towards source) Frequency (Hz) 25.0 mm Thick 125 7 250 14 500 60 1000 43 2000 48 4000 48
