1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2009 08 11 N-STATUS No Replacement Named A. Pan, AP 2005 10 19 Revised Inserted 3.0; Deleted 3.1, 3.2, 3.3, 3.7, 3.8, 4 1989 10 31 Released NB00I10043054003 L. A. Graham GAM L. Moriarty Printed copies are uncontrolled Copyright 2009, Ford Glob
2、al Technologies, LLC Page 1 of 5 THERMOPLASTIC POLYURETHANE/POLYCARBONATE WSB-M4D650-A (TPU+PC) BLEND MOLDING COMPOUND NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is a blend molding compound of polyester base thermoplastic polyurethane (TPU) and polycarbonate (P
3、C) that is paintable. 2. APPLICATION This specification was released originally for material used for bumper fascias. 3. REQUIREMENTS Material specification requirements are to be used for initial qualification of materials. 3.0 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and p
4、art producers must conform to the Companys Standard Requirements For Production Materials (WSS-M99P1111-A). 3.4 MOLDING COMPOUND 3.4.1 Melt Flow Rate 4 - 13 g/ (ISO 1133/ASTM D 1238, 10 minutes 230 C, 2.16 kg) 3.5 MOLDED TEST SPECIMEN 3.5.1 Preparation of Test Specimens Unless otherwise specified al
5、l 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 (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 an
6、d/or B. The specimens shall be prepared according to ISO 294. No annealing allowed. 3.5.2 Density 1.19 - 1.22 g/cm (ISO 1183, Method A/ASTM D 792, Method A1) ENGINEERING MATERIAL SPECIFICATIONWSB-M4D650-APrinted copies are uncontrolled Copyright 2009, Ford Global Technologies, LLC Page 2 of 5 3.5.3
7、Tensile Strength at Yield, min 32 MPa (ISO R 527/ASTM D 638M, 150 min x 10 x 4.0 +/- 0.2 mm specimen, 50 mm/min test speed) 3.5.3.1 Elongation at Break, min 135% (Test Method according to para 3.5.3) 3.5.4 Flexural Modulus, min 510 MPa (ISO 178/ASTM D 790M, Method I, Procedure A, 80 x 10 x 4.0 +/- 0
8、.2 mm specimen, 64 mm support span) 3.5.5 Shear Modulus at 23 C 242 - 362 MPa (ASTM D 4065, forced constant amplitude, fixed frequency of 1 Hz +/- 15%, strain level below 1%. Specimen approx. 60 x 10 x 4.0 +/- 0.2 mm cut from the center of specimen A.) Additionally, a Shear Modulus vs. Temperature c
9、urve shall be plotted for -50 to +150 C temperature range, at 5 C minimum intervals. The plotted curve must be within tolerance range shown on page 5. 3.5.6 Impact Strength, Izod, min (ISO 180, Method A/ASTM D 256, Method A, 63.5 x 10 x 4.0 +/-0.2 mm specimen, 10 specimens for each test) 3.5.6.1 At
10、23 +/- 2 C 66 kJ/m 3.5.6.2 At -40 +/- 2 C 0.2 kJ/m 3.5.6.3 At -23 +/- 2 C 12 kJ/m 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 outsi
11、de, but within 5 s. 3.5.7 Heat Deflection Temperature, min (ISO 75/ASTM D 648, 120 x 10 x 4.0 +/- 0.2 mm specimen) 3.5.7.1 At 1.82 MPa 39 C 3.5.7.2 At 0.45 MPa 82 C ENGINEERING MATERIAL SPECIFICATIONWSB-M4D650-APrinted copies are uncontrolled Copyright 2009, Ford Global Technologies, LLC Page 3 of 5
12、 3.5.8 Heat Aging Performance (ISO 188/ASTM D 573, 1000 h at 100 +/- 2 C. Unaged property values shall be determined at the time of the aged properties determination) 3.5.8.1 Tensile Strength Change +/- 25% (Test Method per para 3.5.3) 3.5.8.2 Impact Strength, Izod Change +/- 25% (Test Method per pa
13、ra 3.5.6.1, specimens to be notched before heat aging) 3.6 FLAMMABILITY (ISO 3795) Burn Rate, max 100 mm/minute The specimen size required for material approval is 355 x 100 x 2.5 +/- 0.1 mm with a smooth surface. 5. GENERAL INFORMATION The information given below is provided for clarification and a
14、ssistance in meeting the requirements of this specification. 5.1 COEFFICIENT OF LINEAR THERMAL EXPANSION 10.2-5/ C (ASTM D 696) 5.2 MOLD SHRINKAGE (ISO 2577, approx. 150 x 100 x 3.2 +/- 0.2 mm injection molded specimen) 5.2.1 Molding Shrinkage After 48 h at 23 +/- 2 C 0.80% 5.2.2 Post Shrinkage (Sep
15、arate specimens required for each test) After 48 h at 80 C 0.95% After 30 min at 120 C 0.90% 5.3 HUMIDITY AGING (1000 h at 38 C/100% Relative Humidity) 5.3.1 Tensile Strength Change +/- 15% (Test Method per para 3.5.3) 5.3.2 Elongation at Break Change +/- 15% (Test Method per para 3.5.3) 5.3.3 Impac
16、t Strength, Izod Change +/- 15% (Test Method per para 3.5.6.1, specimens to be notched before humidity aging) ENGINEERING MATERIAL SPECIFICATIONWSB-M4D650-APrinted copies are uncontrolled Copyright 2009, Ford Global Technologies, LLC Page 4 of 5 5.4 INSTRUMENTED IMPACT STRENGTH, min (ASTM D 3763, Dy
17、natup) At -29 +/- 1 C 55 J 5.5 HARDNESS, DUROMETER D 62 - 73 (ISO 868/ASTM D 2240, 15 s dwell) 5.6 ENVIRONMENTAL STRESS CRACK RESISTANCE No cracks (FLTM BO 127-03) Modifications: - Use standard test bars, Type I. - Protect stress block with aluminum foil. - Instead of immersing specimens, place seve
18、ral soaked cotton balls over the center of the stressed specimens for the duration of the test - 24 h. - Initial stress condition - 1% - Visually observe for the appearance of cracks, rather then using the stereomicroscope. Testing Solvents/Solutions: 1. ASTM Fuel B +15% Toluene (by volume) 2. Brake
19、 Fluid (ESA-M6C25-A) 3. Underbody Coating (ESA-M7C55-A - Widger Chemical Corp, WC-2240, Super Seal) 4. Automatic Transmission Fluid - ATF (ESP-M2C138-CJ) 5. Motor Oil SAE 10W30 (ESE-M2C96-G) 6. Tar and Road Oil Remover (ESR-M5B106-A) 7. Windshield Washer Fluid (ESB-M8B15-B) 8. Zinc Chloride (saturated) 9. Coolant Concentrate/Water - 50/50 vol.% (ESE-M97B44-A) ENGINEERING MATERIAL SPECIFICATIONWSB-M4D650-APrinted copies are uncontrolled Copyright 2009, Ford Global Technologies, LLC Page 5 of 5
