1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2009 08 28 N-STATUS No known use. No Replacement Named C. Mracna, NA 2004 09 29 Revised Inserted 3.0; Deleted 3.1, 3.2, 3.3, 3.5, 3.6 & 4 1990 02 01 Released C 01031532 K. Gerhards Printed copies are uncontrolled Copyright 2009, Ford Global Te
2、chnologies, LLC Page 1 of 5 POLYURETHANE (PUR) MICROCELLULAR ELASTOMER, WSK-M2D429-A REINFORCED REACTION INJECTION MOLDED (RRIM), 20% GLASS FIBER REINFORCED NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is a 20% glass fiber reinforced reaction injection molded (RR
3、IM) thermosetting polyurethane, formed from components introduced together and reacted in the part mold cavity. 2. APPLICATION This specification was released originally for material used in the manufacture of rocker panels. 3. REQUIREMENTS 3.0 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material
4、 suppliers and part producers must conform to the Companys Standard Requirements For Production Materials (WSS-M99P1111-A). 3.4 MOLDED TEST SPECIMEN 3.4.1 Preparation of Test Specimens Unless otherwise specified, all tests shall be conducted on specimens machined from injection molded plaques with t
5、he following dimensions: 300 x 300 x 3.5 +/- 0.2 mm The plaques shall be molded from the production material. No annealing allowed, unless specified otherwise. All testing to be performed in the parallel and the perpendicular flow direction. 3.4.2 Glass Fiber Content 20 +/- 3% (ISO 3451/1, Method A,
6、 at 750 +/- 50 C) 3.4.3 Density 1.15 - 1.28 g/cm3(ISO 1183, Method A/ASTM D 792, Method A1) 3.4.4 Hardness 3.4.4.1 Hardness, International 95 - 100 (ISO 48/ASTM D 1415) 3.4.4.2 Hardness, Durometer D 63 - 71 (ISO 868/ASTM D 2240,15 s dwell) ENGINEERING MATERIAL SPECIFICATIONWSK-M2D429-APrinted copies
7、 are uncontrolled Copyright 2009, Ford Global Technologies, LLC Page 2 of 5 Parallel Perpendicular 3.4.5 Tensile Strength at Max Load MPa, min 18 18 (ISO R 527, type 2/ASTM D 638M, Type M-II, 115 min x 6 x 3.5 +/- 0.2 mm specimen, 50 mm/min test speed) 3.4.5.1 Elongation at Break %, min 100 100 (Tes
8、t acc. to para 3.4.5) 3.4.6 Tear Strength, kN/m, min 60 40 (ISO 34, Method B, procedure a/ ASTM D 624, Die C, all specimens die cut) 3.4.7 Flexural Modulus, MPa, min 800 500 (ISO 178/ASTM D 790M, Method I, Procedure A, 80 x 10 x 3.5 +/- 0.2 mm specimen, 56 mm support span) 3.4.8 Shear Modulus at 23
9、C 277 - 462 (ASTM D 4065, forced constant amplitude, fixed frequency of 1 Hz +/- 15%, strain level below 1%. Specimen approx. 60 x 10 x 3.5 +/- 0.2 mm cut from the center of test plaque. Specimen length between clamps 35-40 mm. Soak time at each temperature interval - 3 minutes minimum) Additionally
10、, a Shear Modulus vs. Temperature curve shall be plotted for -50 to +170 C temperature range, at 5 C minimum intervals. The plotted curve must be within tolerance range shown on page 7. 3.4.9 Impact Strength, Izod, kJ/m2, min (ISO 180, Method A/ASTM D 256, Method A, 63.5 x 10 x 3.5 +/- 0.2 mm specim
11、en, 10 specimens for each test) 3.4.9.1 At 23 +/- 2 C 12 10 3.4.9.2 At -40 +/- 2 C 5 4 The test specimens must be conditioned for minimum of 6 h at the above specified temperature prior to impact test. Low temperature testing shall be done within the cold box, if not possible, test can be conducted
12、outside, but within 5 s. ENGINEERING MATERIAL SPECIFICATIONWSK-M2D429-APrinted copies are uncontrolled Copyright 2009, Ford Global Technologies, LLC Page 3 of 5 Parallel Perpendicular 3.4.10 Heat Deflection Temperature, min 120 120 (ISO 75, Method B/ASTM D 648, at 0.45 MPa, 120 x 10 x 3.5 +/- 0.2 mm
13、 specimen) 3.4.11 Heat Aging Performance (ISO 188/ASTM D 573, 150 +/- 50 air changes/h, 1000 h at 60 +/- 2 C. Unaged property values shall be determined at the time of the aged properties determination) 3.4.11.1 Tensile Strength at Max Load Change, %, max -25 -25 (Test per para 3.4.5) 3.4.11.2 Impac
14、t Strength, Izod, Change, %, max -25 -25 (Test per para 3.4.9.1, specimens to be notched before heat aging) 3.4.12 Humidity Aging Performance (1000 h at 38 +/- 1 C and 95-100% Relative Humidity) 3.4.12.1 Tensile Strength at Max Load Change, %, max -30 -30 (Test per para 3.4.5) 3.4.12.2 Impact Streng
15、th, Izod, Change, %, max -30 -30 (Test per para 3.4.9.1, specimens to be notched before aging) 3.4.13 Water Absorption, max 4.0% (ISO 62/ASTM D 570, 240 h immersion after predrying specimens for 16 h at 120 C) 3.4.14 Fogging (FLTM BO 116-03) Fog Number, min 70 Any fog film present shall be examined
16、for the formation of droplets or coalescence into a clear film. Such conditions, if present, shall be cause for rejection. ENGINEERING MATERIAL SPECIFICATIONWSK-M2D429-APrinted copies are uncontrolled Copyright 2009, Ford Global Technologies, LLC Page 4 of 5 5. GENERAL INFORMATION The information gi
17、ven below is provided for clarification and assistance in meeting the requirements of this specification. 5.1 COEFFICIENT OF LINEAR THERMAL EXPANSION (ASTM D 696) Parallel Perpendicular 5.1.1 From -40 to 23 +/- 2 C 5.0-5/C 14.0-5/C 5.1.2 From 23 to 80 +/- 2 C 4.2-5/C 15.5-5/C 5.1.3 From 80 to 120 +/
18、- 2 C 4.0-5/C 15.0-5/C 5.2 MOLD SHRINKAGE (ISO 2577, approx. 150 x 100 x 3.5 +/- 0.2 mm molded specimen) 5.2.1 Molding Shrinkage, % . After 48 h at 23 +/- 2 C 0.4 1.0 5.2.2 Post Shrinkage, % (Separate specimens required for each test) . After 48 h at 80 C tbd tbd . After 30 min at 120 C 0.5 1.15 5.3 RECYCLING CODE SAE OPTIONAL PUR-GF20 ENGINEERING MATERIAL SPECIFICATIONWSK-M2D429-APrinted copies are uncontrolled Copyright 2009, Ford Global Technologies, LLC Page 5 of 5
