1、 ENGINEERING MATERIAL SPECIFICATION Date Action Revisions 2013 07 04 N-STATUS Replaced by WSD-M99D57-B A. Wedepohl, NA 2006 11 27 Revised Inserted 3.0; Deleted 3.1, 3.2, 3.3, 3.15 & 4 1989 05 02 Released SM/ER0157TC Controlled document at www.MATS Copyright 2013, Ford Global Technologies, LLC Page 1
2、 of 2 POLYURETHANE FOAM, PRESSURE SENSITIVE ESD-M99D57-A ADHESIVE, LOW PERMEABILITY NOT FOR NEW DESIGN 1. SCOPE The material defined by this specification is a flexible polyester polyurethane foam with a pressure sensitive adhesive offering restricted air flow properties. 2. APPLICATION This materia
3、l was originally released as gasketing for heaters and air conditioning units on Transit. 3. REQUIREMENTS 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). 3.4 COLOR G
4、rey or as specified on Engineering Drawing. 3.5 CELL COUNT, min 50 cells/25 mm 3.6 DENSITY, min 35 - 50 kg/m3 (ISO 1855) 3.7 ADHESION STRENGTH, min (ASTM D1000 Method A except use an enamelled panel according to FLTM BI 103-02, B,b) 3.7.1 Original 15 N/25 mm width (20 min after bonding) 3.7.2 After
5、Ageing 15 N/25 mm width (14 Days at 70 +/- 2 C) 3.7.3 After Humidity Ageing, Change, max -10% (24 hrs at 38 +/- 2 C, 98 +/- 2% Relative Humidity) 3.8 TENSILE STRENGTH, min 150 kPa (ASTM D 3574) 3.9 ELONGATION AT BREAK, min 150% (ASTM D 3574) ENGINEERING MATERIAL SPECIFICATION ESD-M99D57-A Copyright
6、2013, Ford Global Technologies, LLC Page 2 of 2 3.10 TEAR STRENGTH, min 175 N/m (ASTM D 3574) 3.11 COMPRESSION SET, max 15% (ISO 1856 - 22 h at 70 C 50% Strain) 3.12 COMPRESSION LOAD DEFLECTION 3 - 5 kPa (ISO 3386/1 - 40% deflection) 3.13 RESTRICTION TO AIR FLOW 10 kPa RESIDUAL PRESSURE, min Test ap
7、paratus shall consist of a 7.6 L pressure reservoir with a 6.4 mm I.D. pipe at least 150 mm long extending from the top outlet. Atop the 6.4 mm I.D. pipe shall be a standard 25 mm pipe flange with a 29 mm diameter opening and a recess of at least 15 mm. The pressure reservoir must be equipped with a
8、n air pressure gauge having a 69 kPa total scale graduated in 0.7 kPa units. Test Method: Place a test piece of new uncompressed foam 150 x 150 x 25 mm over the 25 mm pipe flange. Place a piece of 1.6 mm mesh screening on top of the test piece, bolt another 25 mm pipe flange to the one attached to t
9、he pressure reservoir, with the test piece and screening in between. Tighten the bolts until each is secure, but avoid tightening any one more than the other. Introduce a pressure of 35 kPa into the reservoir, allow the pressure to build up slowly. Turn off the air supply. Observe the pressure drop
10、over a 60 second period. At the end of this period, residual pressure in the reservoir must be a minimum of 10 kPa. 3.14 WATER ABSORPTION, max 280% (at 75% Compression, by weight) Test Method: 25 x 25 x 150 mm samples to be weighed and then compressed to 25% of their original thickness. The samples
11、are then submerged in a 300 x 300 x 250 mm tank under 125 mm of water at 23 +/- 2 C using 6.4 mm pitch mesh screening to keep samples positioned. At the completion of 24 hours immersion remove the samples and allow to drain horizontally for 5 +/- 5 min on 6.4 mm pitch mesh screening. Re-weigh and calculate average absorption for 3 samples: % Water Absorption = (B - A)/A) x 100 A = Original Weight B = Weight after immersion
