1、 ENGINEERING MATERIAL SPECIFICATION Date Action Revisions 2006 10 17 N-STATUS Replaced by WSB-M2D402-A3 2004 09 17 Revised Para 3.0 inserted; para 3.1, 3.2, 3.3, 3.7, 3.8 & 4 deleted 1989 05 19 Released SM/EQ9548 TP K. Gerhards Printed copies are uncontrolled Copyright 2006, Ford Global Technologies
2、 LLC Page 1 of 4 POLYURETHANE (PUR) FOAM, SLAB STOCK WSK-M2D402-A1 WSK-M2D402-A2 NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by these specifications is a slab stock flexible polyurethane foam. 2. APPLICATION These specifications were released originally for material used in seat cus
3、hions and backs. 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 APPEARANCE The foam shall have a homogeneous medium sized cell structure with no
4、 large voids or solid spots which may impair the serviceability of the material. 3.5 TEST SPECIMEN A1 A2 3.5.1 Density, kg/m3, min 22 28 (ISO 845/ASTM D 3574, Test A) 3.5.2 Tensile Strength, kPa, min 100 120 (ISO 1798/ASTM D 3574, Test E, 50 mm bench marks, 5 specimens minimum) 3.5.2.1 Elongation at
5、 Break, %, min 150 200 (Test according to para 3.5.2) 3.5.3 Tear Strength, N/m, min 250 300 (ISO DIS 8067/ASTM D 3574, Test F, 50 mm/minute test speed) 3.5.4 Compression Set, %, max (ISO 1856, Method A/ASTM D 3574, Test D, Ct calculation, 22 h at 70 C, 3 specimens minimum) 3.5.4.1 At 50% Deflection
6、7 5 3.5.4.2 At 75% Deflection 16 12 ENGINEERING MATERIAL SPECIFICATION WSK-M2D402-A1/A2 Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 2 of 4 3.5.5 Heat Ageing (ISO 2240/ASTM D 3574, Test K, 22 h at 140 +/- 2 C) 3.5.5.1 Compression Deflection Stress Change, A1 and
7、 A2, max 25% (ISO 3386/1, 40% compression 100 x 100 x 50 mm specimen, 100 +/- 20 mm/minute test speed, 3 specimens minimum) 3.5.6 Humidity Ageing (AUTOCLAVE) (ISO 2440/ASTM 3574, Test J, 100 x 100 x 50 mm specimen, 5 h at 120 C) 3.5.6.1 Compression Deflection Change Stress Change, A1 and A2 30% (Tes
8、t acc. to para 3.5.5.1) 3.5.6.2 Compression Set, A1 and A2, max 30% (Test acc. To para 3.5.4.1 absolute figures) 3.5.7 Staining, A1 and A2 None Test Method: Cover an approx. 100 mm x 100 mm x 10 mm foam specimen (with surface skin on one side) with a section of light colored standard vinyl (FLTM BN
9、103-01). Expose assemblies (surface skin of foam facing light source) for 150 h in the Fluorescent Sunlamp Cabinet (equipment as specified in FLTM BO 115-01). Control specimens of vinyl should also be exposed. Evaluate the standard material after cooling to room temperature. 3.5.8 Fogging, A1 and A2
10、 (FLTM BO 116-03) Fog Number, min 70 3.5.9 Odor, A1 and A2, max Rating 2 (FLTM BO 131-01/SAE J1351) 3.5.10 Ash Content, A1 and A2, max 1% (ISO 247, Method B/ASTM D 1278, 800 +/- 25 C) 3.5.11 Flammability, A1 and A2 (ISO 3795) Burn Rate, max 100 mm/minute ENGINEERING MATERIAL SPECIFICATION WSK-M2D402
11、A1/A2 Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 3 of 4 3.6 FINISHED PART 3.6.1 Load Indentation (IRGL Value) - tbd NAAO ONLY (SAE J815, steps 1-4 only) Values as specified on the engineering drawing. 3.6.2 Product Indentation Hardness Characteristics - EAO O
12、NLY 3.6.2.1 Indentation Hardness at 40% Indentation (H2): As specified on Engineering Drawing. Each individual value must meet the hardness requirement. 3.6.2.2 Sag Factor, A1 and A2, min 2.2 3.6.2.3 Recovery, A1 and A2, min 70% TEST METHOD ISO 2439, Method B, with the following extension: after mea
13、suring the 65% indentation hardness release the load to a rest compression of 25%. Maintain this rest compression for 30 s and measure the force. This figure is used as RH1 for the calculation of the recovery. CALCULATIONS: H3 Sag Factor = - H1 H1 = Indentation Hardness at 25% compression H3 = Inden
14、tation Hardness at 65% compression RH1 Recovery = - x 100 H1 H1 = Indentation Hardness at 25% compression RH1 = Residual Indentation Hardness as 25% rest compression 3.6.3 Fatigue Resistance - NAAO ONLY (FLTM BO 012-04, 375 x 300 x 50 mm sample with molded top surface. Record the average loss of thi
15、ckness value of 3 specimens tested at 222 N) ENGINEERING MATERIAL SPECIFICATION WSK-M2D402-A1/A2 Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 4 of 4 3.6.3.1 Seat Cushions Use 267 N Force and fatigue for 20,000 cycles . Loss of Thickness, max tbd % 3.6.3.2 Seat B
16、acks and Center Arm Rests Use 133 N Force and fatigue for 10 000 cycles . Loss of Thickness, max tbd % Excessive surface foam deterioration or foam splitting after required fatigue cycles shall be cause for rejection. 3.6.4 Fatigue Resistance - EAO ONLY (ISO 3385, record the average value of 3 specimens tested) A1 A2 3.6.4.1 Loss of Hardness, %, max 40 35 3.6.4.2 Loss of Thickness, A1 and A2, max 5%
