1、 ENGINEERING MATERIAL SPECIFICATION Date Action Revisions 2007 03 15 Revised Inserted 3.0; Deleted 3.20 & 4 1994 12 16 Revised Revised and Retyped, was 11 pages 1978 09 27 Released SM/EQ 8424 TP Printed copies are uncontrolled Copyright 2007, Ford Global Technologies, LLC Page 1 of 4 HEAT INSULATION
2、, SELF-ADHESIVE, POLYETHYLENE FOAM SK-M99G9522-A 1. SCOPE The material defined by this specification is a molded self-adhesive, closed cell, crosslinked polyethylene foam with the adhesive side covered by a release liner. 2. APPLICATION This material was originally released for heat insulation of th
3、e heating channel in the engine compartment. 3. REQUIREMENTS Note: If the finished part does not allow the preparation of plane specimens, the supplier is required to provide, together with the Initial Sample Report, specimens of same material and equivalent manufacture used for the finished part. S
4、amples for control and routine checks shall be submitted as required by Quality Control. The material shall be conditioned for a minimum of 24 hours at 23 +/- 2 C and 50% relative humidity prior to test and tested under the same conditions. Tests shall be conducted not earlier than 72 hours after ma
5、nufacture of part. 3.0 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and part producers must conform 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 As specified on Engi
6、neering drawing 3.3 WEIGHT OF FINISHED PART As specified on Engineering drawing 3.4 DENSITY 35 +/- 5 kg/m3 (ASTM D 2406) 3.5 TENSILE STRENGTH, min 15 N/cm2 (ASTM D 2406) 3.6 ELONGATION, min 50% (ASTM D 2406) 3.7 TEAR STRENGTH, min 30 N/25 mm (ASTM D 624, Die C) 3.8 COMPRESSION SET, max 42% (ASTM D 2
7、406, specimens 50 x 50 x 25 +/- 1 mm, 50% compression, 70 h at 23 +/- 2 C) ENGINEERING MATERIAL SPECIFICATION SK-M99G9522-A Printed copies are uncontrolled Copyright 2007, Ford Global Technologies, LLC Page 2 of 4 Calculation: Ct = to - tf - x 100 to Ct = Compression set expressed as a % of the orig
8、inal thickness to = Original thickness tf = Final thickness 3.9 COMPRESSION LOAD DEFLECTION 5.5 +/- 1.5 N/cm2 (ASTM D 1056) 3.10 WATER ABSORPTION, max 3% (ASTM D 1056, 24 h) 3.11 DIMENSIONAL STABILITY Dimensional Change, max 3% Test Method: A specimen approximately 300 x 300 mm in size shall be plac
9、ed into a mechanical convection oven maintained at 90 +/- 2 C for 3 hours. Dimensional changes shall be measured after conditioning for 30 minutes at room temperature. 3.12 COLD RESISTANCE -40% After test, specimen shall not show any cracks or breaks. Test Method: Specimens 150 x 50 x 5.5 +/- 0.5 mm
10、 in size shall be placed in a cold box maintained at -40 +/- 1 C for 4 hours and subsequently, twisted 360 around itself. Test shall be done inside the cold box. Examination shall be done on specimens bent 180 with the unaided eye from a distance of 300 mm. 3.13 COLD ADHESION AFTER HEAT AGEING No ch
11、ipping Test Method: 1 Apply 280 x 290 x 5.5 +/- 0.5 mm self adhesive specimens to 300 x 300 x 1.5 +/- 0.1 mm test panels, prepared according to FLTM BI 103-02 Bb and firmly press together. 2) After 2 hours at room temperature, expose test assemblies to 80 C +/- 2 C for 14 days. 3) Test the assemblie
12、s after cooling to room temperature according to FLTM BV 151-01, clauses 5 to 8 (Load “A“). 3.14 PEEL STRENGTH at 180 (ASTM D 1000, specimens bonded according to FLTM BI 103-02 Bb prepared panels. Test after 2 h conditioning at room temperature. Specimen thickness 5.5 +/- 0.5 mm) Note: If foam fails
13、 internally before peeling occurs, the internal strength of the foam at the point of failure must be minimum 12 N/25 mm (3.14.1, 3.14.2, 3.14.3 and 3.14.4). ENGINEERING MATERIAL SPECIFICATION SK-M99G9522-A Printed copies are uncontrolled Copyright 2007, Ford Global Technologies, LLC Page 3 of 4 3.14
14、.1 As Received, min 12 N/25 mm 3.14.2 After Ageing, max -15% (14 d at 80 +/- 2 C and 2 h at room temperature) 3.14.3 After Environmental Cycling Test, max -15% Test Method: The test assemblies shall be subjected 3 times to the following cycle in the sequence indicated below: 3 h at 80 +/- 2 C 1 h at
15、 23 +/- 2 C 3 h at - 40 +/- 2 C 1 h at 23 +/- 2 C 16 h at 98 +/- 2% and 38 +/- 2 C relative humidity Condition for 2 h at room temperature prior to test. 3.14.4 Resistance to Various Test Reagents, max -15% Test Method: 1) Prepare specimens according to clause 3.14. 2) Immerse test assemblies for 1
16、minute in test reagents as listed below. Use separate test specimens for each test reagent. 3) Test for peel strength after 24 hours conditioning at room temperature. Test Reagents: 1) Oil No. 1, ASTM D 471 2) Ford Longlife coolant SS-M97B9101-A (50% by weight in distilled water) 3) Waxing compound
17、EU-M9G21-A 4) Dewaxing compound EU-M5B8001-A 3.15 SHEAR STRENGTH (FLTM BU 151-01, Test Method “A“, Fig. 4, specimen thickness 5.5 +/- 0.5 mm, specimens bonded according to FLTM BI 103-02 Bb prepared panels. Test for shear strength after 2 h conditioning at room temperature) Note: If foam fails inter
18、nally before loss of adhesion occurs, the internal strength of the foam must be minimum 10 N/cm2. 3.15.1 As Received, min 10 N/cm2 3.15.2 After Ageing, max -15% (14 d at 80 +/- 2 C and 2 h at room temperature) ENGINEERING MATERIAL SPECIFICATION SK-M99G9522-A Printed copies are uncontrolled Copyright
19、 2007, Ford Global Technologies, LLC Page 4 of 4 3.15.3 Environmental Cycling Test, max -15% Test Method: See clause 3.14.3, Test Method. Test for shear strength after 2 hours conditioning at room temperature. 3.16 HEAT STABILITY The finished part shall show no evidence of delamination, no visible s
20、hrinkage or distortion, respectively it shall not warp to an extent that would affect its use in ultimate assembly. Test Method: The finished part or a representative section of the part shall be mounted as in the vehicle and subjected to a temperature of 90 +/- 2 C in a mechanically convected air d
21、ry oven for 24 hours. Examine after cooling to room temperature. 3.17 THERMAL CONDUCTIVITY, max 0.040 W/mK (ASTM C 518-70, based on a mean temperature of 55 C) 3.18 QUALITY The material shall be of uniform quality free from foreign material and properties detrimental to normal production use. It sha
22、ll not cause excessive soiling of handlers in normal production use. 3.19 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 irritation (dermatitis), irritation of the mucous mem
23、branes, difficulties in breathing, etc. The material shall be free from objectionable odors both as received and after storage. 5. GENERAL INFORMATION The information given below is provided for clarification and assistance in meeting the requirements of this specification. 5.1 STORAGE STABILITY (Fr
24、om date of receipt at Ford Motor Company) Minimum 6 months when stored at temperatures below 30 C. The release liner shall remove easily when measured by hand peel examination and shall not change appreciably after 6 months storage below 30 C. (To be certified by supplier on “Initial Sample Report“). 5.2 APPLICATION CRITERION Self adhesive materials should be applied to absolute clean and dry surfaces only. 5.3 WEIGHT IN STORAGE As recommended by supplier.
