1、 ENGINEERING MATERIAL SPECIFICATION Date Action Revisions 2006 10 25 Revised Inserted 3.0; Deleted 3.19 & 4 1994 12 16 Revised and Retyped Was 12 pages 1977 01 28 Released SM/EQ8201TP Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 1 of 5 POLYURETHANE FOAM MOLDED P
2、ART FOR SOUND ABSORPTION SK-M99G9518-A POLYURETHANE FOAM MOLDED PART FOR SOUND ABSORPTION SK-M99G9518-B 1. SCOPE The material defined by these specifications is a polyurethane foam based molded part with integral skin. 2. APPLICATION This part was originally released for sound absorption in the C-pi
3、llar area between wheel arch and luggage compartment. 3. REQUIREMENTS Material specification requirements are to be used for initial qualification of materials. The material shall be conditioned for a minimum of 24 hours at 23 +/- 2 C and 50 +/- 5% relative humidity prior to test and tested under th
4、e same conditions. Test shall be conducted not earlier than 72 hours after manufacture of part. Sampling: Samples except for tests according to FLTM EU-BV 060-04 shall be cut from the finished part. 3.0 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and part producers must conform
5、 to the Companys Standard Requirements For Production Materials (WSS-M99P1111-A). 3.1 COLOR Grey to black or as specified on Engineering drawing. 3.2 DIMENSIONS (Slide gauge) Thickness between 10 mm and 19 mm or according to the Engineering drawing. 3.3 ASH, max 5% (FLTM BV 150-10) 3.4 DENSITY, min
6、70 kg/m3 (ISO 1855, with integral skin) 3.5 TENSILE STRENGTH (ISO 1798) 3.5.1 Original, min 11 N/cm2 3.5.2 Elongation at Break, min 25% ENGINEERING MATERIAL SPECIFICATION SK-M99G9518-A SK-M99G9518-B Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 2 of 5 3.6 COMPRES
7、SION SET, max 50% (ISO 1856, Method A, 50%, 22 h, 70 C) 3.7 COMPRESSION LOAD DEFLECTION 3 - 8 N/cm2 (FLTM EU-BO 052-01, except specimen size: 50 x 50 x 50 mm +/- 2 mm) 3.8 RESISTANCE TO HUMIDITY AGEING (ISO 2440, 105 C, for 3 h) 3.8.1 Change of Compression Load Deflection Maximum 10 % based on measu
8、red original value according to 3.6. 3.9 ADHESION OF SURFACE FILM TO FOAM The surface film shall not be removed without being destroyed. Test Method: 1) Cut into the skin of the finished part an area of 25 x 250 mm with a razor blade. 2) Cover the area with tape according to SK-M3G9500-A and press d
9、own firmly. 3) Remove the tape from test piece in a tensile testing machine at an angle of 3.14 rad and a test speed of approx 500 mm/minimum. 3.10 HEAT STABILITY (24 h at 90 +/- 2 C, 1 h at relative humidity) The finished part shall show no evidence of delamination, no visible shrinkage or distorti
10、on, respectively it shall not warp to an extent that would affect its use in ultimate assembly. 3.11 TEMPERATURE CYCLING TEST No change when compared with the original part. Test Method: 1) The finished part shall be subjected 3 times to the following cycle: 3 h at 80 +/- 2 C 1 h at room temperature
11、 3 h at -30 +/- 2 C 1 h at room temperature 16 h at 38 +/- 2 C and 98 +/- 2% relative humidity 2) Examine after conditioning at room temperature for 24 hours. ENGINEERING MATERIAL SPECIFICATION SK-M99G9518-A SK-M99G9518-B Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC
12、Page 3 of 5 3.12 COLD RESISTANCE No cracking or breaking Test Method: 1) Expose molded part to 80 +/- 2 C air temperature for 24 hours. 2) Remove from oven and condition test part at room temperature for 2 hours. 3) Place the test part in a cold box at -30 +/- 2 C for 24 hours. 4) While still in the
13、 cold box drop a steel ball of 225 g mass and 38 mm in diameter from a height of 600 mm 5 times to different areas of the test part (finished part to be in horizontal position and normal to the direction of impact). 3.13 SOUND ABSORPTION According to Figure 1 (ASTM C 384) Note: Five samples shall be
14、 tested from each material under test. Samples for measuring in the small tube shall be die cut from the middle of the sample needed for the great tube after measuring the latter. 3.14 AIR BORNE NOISE INSULATION According to Figure 2 Note: If the finished part does not allow the preparation of plane
15、 specimens as required above, the supplier is required to provide, together with he Initial Sample Report, specimens of same material and equivalent manufacture used for the finished part. Samples for control and routine checks shall be submitted as required by Quality Control. 3.15 FLAMMABILITY 3.1
16、5.1 SK-M99G9518-A No requirement 3.15.2 SK-M99G9518-A (FLTM EU-BN 024-02) Burn Rate, max 100 mm/minute 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 their surface, at a rate of mo
17、re than 100 mm/minute. To demonstrate compliance, the sample size and method of testing shall be in accordance with FLTM EU-BN 024-02. ENGINEERING MATERIAL SPECIFICATION SK-M99G9518-A SK-M99G9518-B Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 4 of 5 3.16 PERFORM
18、ANCE-ENVIRONMENTAL AGEING REQUIREMENT 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 75 mm per minute as specified by the Flammability Lot Sampling Plan of FLTM EU-BN 024-02,
19、must be evaluated for permanency of the materials flame retardant properties per SK-M99P9500-A, Table 1 according to the accelerated environmental ageing requirements applicable to the basic material category of this particular specification. Any material, portions of components, and composites defi
20、ned by this specification that have been treated, modified or reformulated to conform to Flammability Lot Sampling Plan of FLTM EU-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 physica
21、l properties per SK-M99P9500-A, Table 1 applicable to the basic material category of this particular specification. 3.17 HEALTH HAZARDS AND ODOR The material must not contain any ingredients (matter), which, under normal production conditions, could lead to health hazards such as skin rash or irrita
22、tion (dermatitis), irritation of the mucous membranes, difficulties in breathing etc. The material shall be free from objectionable odors both as received and after storage. 3.18 QUALITY The material shall be of uniform quality free from foreign material and properties detrimental to normal producti
23、on use. It shall not cause excessive soiling of handlers in normal production use. 5. GENERAL INFORMATION The information given below is provided for clarification and assistance in meeting the requirements of these specifications. 5.1 STORAGE STABILITY (From date of receipt at Ford Motor Company) Minimum 12 months. 5.2 HEIGHT IN STORAGE As recommended by supplier. ENGINEERING MATERIAL SPECIFICATION SK-M99G9518-A SK-M99G9518-B Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 5 of 5
