1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2006 01 17 Revised Inserted 3.0; Deleted 3.1, 3.2, 3.3, 3.7, 3.8 Corrected numbering 3.4.8 1992 12 01 Released EP00E10176314000 L. Rodigas Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 1 of 4 THERMOPLASTIC
2、POLYURETHANE ELASTOMER (TPUR) WSK-M4D755-A3 65 DUROMETER D HARDNESS MOLDING COMPOUND 1. SCOPE The material defined by this specification is a rigid thermoplastic polyurethane elastomer (TPUR), 65 durometer D hardness. 2. APPLICATION This specification was released originally for material used for ex
3、terior vacuum metalized side shields. 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). 3.1.1 All requirements of this specification, identified by sym
4、bol(s), shall be met with data representing 3 sigma values. 3.4 MOLDED TEST SPECIMEN 3.4.1 Preparation of Test Specimens Unless otherwise specified all tests shall be carried out on injection molded one-end gated test specimens. The following dimensions are required: A. 150 min x 10 x 4.0 +/- 0.2 mm
5、 (Tensile Bar, ISO 3167) B. 120 x 10 x 4.0 +/- 0.2 mm Specimens with shorter dimensions shall be cut from the center portion of the test specimen A and/or B. The specimens shall be prepared according to ISO 294. No annealing allowed. 3.4.2 Density 1.19 - 1.24 g/cm3(ISO 1183, Method A) 3.4.3 Hardness
6、 Durometer D 60 - 70 (ISO 868/ASTM D 2240, 15 s dwell) (s) 3.4.4 Tensile Strength at Max Load, min 20 MPa (ISO R 527, 150 min x 10 x 4.0 +/- 0.2 mm specimen, 50 mm/minute test speed) (s) 3.4.4.1 Elongation at Break, min 150% (Test Method according to para 3.4.4) ENGINEERING MATERIAL SPECIFICATIONWS
7、K-M4D755-A3Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 2 of 4 (s) 3.4.5 Flexural Modulus, min 200 MPa (ISO 178, 80 x 10 x 4.0 +/- 0.2 mm specimen, 2 mm/minute test speed, 64 mm support span) 3.4.6 Shear Modulus at 23 C 130 - 190 MPa (ASTM D 4065, forced constan
8、t amplitude, fixed frequency of 1Hz +/- 15%, strain level below 1%. Specimen approx. 60 x 10 x 4.0 +/- 0.2 mm cut from the center of specimen A. Specimen length between clamps 35-40 mm. Soak time at each temperature interval - 3 minutes minimum). Additionally, a Shear Modulus versus Temperature curv
9、e shall be plotted for -50 to +100 C temperature range, at 5 C minimum intervals. The plotted curves must be within tolerance ranges shown on page 4. (s) 3.4.7 Impact Strength, Izod, min (ISO 180/1A, 80 x 10 x 4.0 +/- 0.2 mm specimen, 10 specimens for each test) 3.4.7.1 At 23 +/- 2 C No break 3.4.7.
10、2 At -40 +/- 2 C 13 kJ/m23.4.7.3 At 0 +/- 2 C No break 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. (s) 3.4.8 Heat Deflection Temperature, min (ISO 75, 120 x 10 x 4.0 +/-
11、0.2 mm specimen, 0.34 +/- 0.01 mm deflection) 3.4.8.1 At 0.45 MPa 45 C 3.4.9 Heat Aging Performance (ISO 188, except 150 +/- 50 air changes/h, 1000 h at 80 +/- 2 C. Unaged property values shall be determined at the time of the aged properties determination) 3.4.9.1 Tensile Strength at Max Load, Chan
12、ge +/- 25% (Test Method per para 3.4.4) 3.4.9.2 Impact Strength, Izod, min 40 kJ/m2(Test Method per para 3.4.7.1, specimens to be notched before heat aging) ENGINEERING MATERIAL SPECIFICATIONWSK-M4D755-A3Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 3 of 4 3.5 FO
13、GGING (FLTM BO 116-03, 3 h at 100 C) Fog Number, min 85 Formation of excessive amounts of clear film or droplets is cause for rejection. 3.6 FLAMMABILITY (ISO 3795) Burn Rate, max 100 mm/minute The specimen size required for material approval is 355 x 100 x 1.0 +/- 0.1 mm with a smooth surface. 5. G
14、ENERAL INFORMATION The information given below is provided for clarification and assistance in meeting the requirements of this specification. 5.1 COEFFICIENT OF LINEAR THERMAL EXPANSION 13-5/C (ASTM E 228 or TMA, temperature range 20 to 100 C) 5.2 MOLD SHRINKAGE (ISO 2577, approx. 150 x 100 x 3.2 +
15、/- 0.2 mm injection molded specimen) 5.2.1 Molding Shrinkage . After 48 h at 23 +/- 2 C 1.0 - 1.2% 5.2.2 Post Shrinkage (Separate specimens required for each test) . After 48 h at 80 C 1.0 - 1.3% . After 30 minutes at 120 C 1.0 - 1.5% 5.3 RECYCLING CODE TPUR ENGINEERING MATERIAL SPECIFICATIONWSK-M4D755-A3Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 4 of 4
