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, 3.17, 3.18 & 4 1983 05 18 Released CLN1/C5N1-DR-594739-1 Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 1
2、of 4 POLYURETHANE FOAM, ACOUSTICAL - 80 kg/m3 ESB-M2D297-A4 NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is a filled polyether urethane foam cast to the desired configuration. 2. APPLICATION This specification was released originally for material used as molded d
3、ash panel and floorpan isolators for the 1984 Continental/Mark VII. The foam shall not be used in direct contact with metal temperatures exceeding 121 C. Metal contact temperatures or exposure temperatures that exceed 121 C shall employ sufficient insulation to insure that the foam is exposed to les
4、s than 121 C. 3. REQUIREMENTS Material specification requirements are to be used for initial qualification of materials. The requirements of this specification are based on test samples taken from flat cast sheets and finished parts. 3.0 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppli
5、ers and part producers must conform to the Companys Standard Requirements For Production Materials (WSS-M99P1111-A). 3.2 CONSTRUCTION The cell structure of sheets and finished parts shall be free from large voids, unblown compound or hard spots. Samples of parts or sheets shall be equal to or better
6、 than samples on file at Materials and Corrosion Protection Engineering Department, Textile and Acoustic Engineering Section. 3.3 DENSITY, +/- 10% 80 kg/m3(ASTM D 3574, Test A, section density) 3.4 ASH CONTENT, max 4% (ASTM D 586) 3.5 WEIGHT, FINISHED PART, max As specified on engineering drawing EN
7、GINEERING MATERIAL SPECIFICATIONESB-M2D297-A4 Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 2 of 4 3.6 TENSILE STRENGTH, min 90 kPa (ASTM D 1564, Suffix T, skin on one side only) 3.6.1 Elongation, min 100% 3.7 HEAT AGED TENSILE STRENGTH, min 80 kPa (ASTM D 1564,
8、Suffix A, except age 48 h at 121 +/- 2 C, skin on one side only) 3.7.1 Elongation, min 100% 3.8 TEAR STRENGTH, min 0.5 N/mm (ASTM D 624, Die “C“, 12.7 mm thick, skin on one side only) 3.9 INDENTATION FORCE DEFLECTION (ASTM D 3574, Test B) 3.9.1 IFD at 25% 200 +/- 50% 3.9.2 IFD at 65% 730 +/- 50% 3.1
9、0 COMPRESSION AND RECOVERY (FLTM BN 015-02) Compression, max 90% Recovery 90% 3.10.1 Aged 48 h at 121 +/- 2 C Compression, max 90% Recovery, min 90% 3.11 MILDEW RESISTANCE - For Initial Qualification Only No visual evidence of mildew growth and no mildew odor after 7 days exposure in a humidity cabi
10、net 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 following cycling, then bent 180 around a 51 mm diameter mandrel: 7 h at 83 C +/- 2 C in a mechanical convection oven, followed
11、by 16 h at -18 +/- 2 C in a cold chamber and flexing in cold chamber. ENGINEERING MATERIAL SPECIFICATIONESB-M2D297-A4 Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 3 of 4 3.13 AGED WEIGHT LOSS, max 1.5% Test Method: Weight 100 x 100 x 25 mm samples to the nearest
12、 mg (W1). Place 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 W13.14 DURABILITY (FLTM BO 012-04, Method “A“, No evidence of excessive except use 27 kg and no load crumbling or deterioration, e.g
13、., deflection readings, required physical separation resulting in for initial approval only) dislodged sections or internal cohesive separation 3.14.1 Original 3,000 cycles 3.14.2 Aged 100 h at 1,000 cycles 121 +/- 2 C 3.15 FLAMMABILITY 3.15.1 In order to comply with Federal Motor Vehicle Safety Sta
14、ndard 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 4 in (101 mm) per minute. To demonstrate compliance, the sample size and method of testing shall be in accordance with FLTM BN 024-02. 3.15.2 Performanc
15、e - Environmental Aging All materials, portions of components, and composites defined by this specification that have not been treated, modified or reformulated and exceed a maximum burn rate of 76 mm per minute as specified by the Flammability Lot Sampling Plan of FLTM BN 024-02, must be evaluated
16、for permanency of materials flame retardant properties per ESB-M25P3-A according to the accelerated environmental aging requirements applicable to the basic materials category of this particular specification. Any material, portions of components, and composites defined by this specification that ha
17、ve been treated, modified or reformulated to conform to Flammability Lot Sampling Plan of FLTM BN 024-02, regardless of maximum burn rate, must be evaluated for both permanency of materials flame retardant properties and changes in mechanical, chemical and physical properties per ESB-M25P3-A applica
18、ble to the basic materials category of this particular specification. 3.15.3 Flammability Test Program Materials, portions of components, and composites governed by this specification must also comply with the requirements of ES-D3AB-11014-AA. ENGINEERING MATERIAL SPECIFICATIONESB-M2D297-A4 Printed
19、copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 4 of 4 3.16 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 obtain
20、ed 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 TYPICAL ACOUSTICAL PROPERTIES Sound Transmission Loss Sound Absorption (SAE J 1400, vertical position, (ASTM C 384, without steel panel) 12.5 mm thickness) Frequency (Hz) STL (dB) Absorption (%) 125 2 - 250 7 9 500 8 34 1000 14 51 2000 20 86 4000 24 57 5.2 THERMAL CONDUCTIVITY, max 0.048 W m-1k (ASTM C 177, 24 C mean temperature, 25 mm thick sample)
