1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2010 01 13 N-STATUS No replacement named J. Crist, NA 2006 01 19 Revised Inserted 3.0; Deleted 3.1, 3.2, 3.3, 3.9, 3.10 & 4 1993 11 02 Released EP00E10258829000 L. Rodigas Printed copies are uncontrolled Copyright 2010, Ford Global Technologie
2、s, LLC Page 1 of 5 POLYCARBONATE + POLYBUTYLENE TEREPHTHALATE WSK-M4D763-A3 BLEND (PC+PBT), MODIFIED, EASY FLOW MOLDING COMPOUND, PAINTABLE POLYCARBONATE + POLYBUTYLENE TEREPHTHALATE WSK-M4D763-A5 BLEND (PC+PBT), MODIFIED, EASY FLOW, HEAT OPTIMIZED MOLDING COMPOUND, PAINTABLE NOT TO BE USED FOR NEW
3、DESIGN 1. SCOPE The materials defined by these specifications are cold impact and gasoline resistant easy flow polycarbonate + polybutylene terephthalate blend molding compounds for painted applications. WSK-M4D763-A5 material has a moderately higher polybutylene terephthalate content for optimized
4、heat performance. 2. APPLICATION These specifications were released originally for material used for painted bumper shells. 3. REQUIREMENTS 3.0 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and part producers must conform to the Companys Standard Requirements For Production Mater
5、ials (WSS-M99P1111-A). 3.1.1 All requirements of this specification, identified by symbol (s), shall be met with data representing 3 sigma values. 3.4 MOLDING COMPOUND (s) 3.4.1 Melt Flow Rate (ISO 1133) 3.4.1.1 250 C, 5 kg 32 - 43 g/10 minutes 3.4.1.2 250 C, 2.16 kg 11 - 16 g/10 minutes The materia
6、l shall be dried for 2 h minimum at 120 - 125 C in a mechanical convection oven immediately preceding the test. 3.5 MOLDED TEST SPECIMEN 3.5.1 Preparation of Test Specimens Unless otherwise specified all tests shall be carried out on injection molded one-end gated test specimens. The following dimen
7、sions are required: ENGINEERING MATERIAL SPECIFICATIONWSK-M4D763-A3/A5 Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 2 of 5 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 t
8、he center portion of the test specimen A and/or B. The specimens shall be prepared according to ISO 294. No annealing allowed. 3.5.2 Density 1.20 - 1.24 g/cm3(ISO 1183, Method A) (s) 3.5.3 Tensile Strength at Yield, min 50 MPa (ISO R 527, 150 minimum x 10 x 4.0 +/- 0.2 mm specimen, 50 mm/minute) 3.5
9、.3.1 Elongation at Break, min 65% (Test Method according to para 3.5.3) (s) 3.5.4 Flexural Modulus, min 2.0 GPa (ISO 178, 80 x 10 x 4.0 +/- 0.2 mm specimen, 64 mm support span) 3.5.5 Shear Modulus at 23 C 0.56 - 1.05 GPa (ASTM D 4065, forced constant amplitude, fixed frequency of 1 Hz +/- 15%, strai
10、n 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 vs. Temperature curve shall be plotted for -50 to +160 C temperature rang
11、e, at 5 C minimum intervals. The plotted curve must be within tolerance range shown on page 5. (s) 3.5.6 Impact Strength, Izod, min (ISO 180/1A, 80 x 10 x 4.0 +/- 0.2 mm specimen, 10 specimens for each test) 3.5.6.1 At 23 +/- 2 C 36 kJ/m23.5.6.2 At -40 +/- 2 C 20 kJ/m23.5.6.3 At -10 +/- 2 C 25 kJ/m2
12、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) 3.5.7 Heat Deflection Temperature, min (ISO 75, 120 x 10 x 4.0 +/- 0.2 mm specimen, edgewise, 0.32 +/- 0.01 mm deflection)
13、 ENGINEERING MATERIAL SPECIFICATIONWSK-M4D763-A3/A5 Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 3 of 5 3.5.7.1 At 1.80 MPa 75 C 3.5.7.2 At 0.45 MPa 95 C All specimens dry as molded. If not tested immediately after molding, specimens must be stored in a sealed,
14、moisture-proof container filled with silica gel. (s) 3.5.8 Vicat Softening Temperature, min (ISO 306, 10 x 10 x 4.0 +/- 0.2 mm specimens. Bath - silicone oil, temp. raise 50 +/- 5 C/h. Dial gage reset to 0 after addition of 5 kg weight. At 50 N load) WSK-M4D763-A3 115 C WSK-M4D763-A5 120 CAll specim
15、ens dry as molded. If not tested immediately after molding, specimens must be stored in a sealed, moisture-proof container filled with silica gel. 3.5.9 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 t
16、he aged properties determination) 3.5.9.1 Tensile Strength at Yield, Change +/- 20% (Test Method per para 3.5.3) 3.5.9.2 Impact Strength, Izod Change +/- 30% (Test Method per para 3.5.6.1, specimens to be notched before heat aging) 3.6 FOGGING (FLTM BO 116-03) Fog Number, min 90 Formation of a clear
17、 film, droplets or crystals is cause for rejection. 3.7 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. 3.8 PAINTABILITY Painted substrate must comply with all requirements of paint performance
18、 specification WSK-M2P145-A. ENGINEERING MATERIAL SPECIFICATIONWSK-M4D763-A3/A5 Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 4 of 5 5. GENERAL INFORMATION The information given below is provided for clarification and assistance in meeting the requirements of the
19、se specifications. 5.1 COEFFICIENT OF LINEAR THERMAL EXPANSION 10-5/C (ASTM E 831 TMA, temperature range -40 to +40 C) 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 0.6 - 0.9% 5.2.2 Post Shrinkage (Separ
20、ate specimens required for each test) . After 48 h at 80 C 0.1 - 0.3% . After 30 min at 120 C 0.3 - 0.6% 5.3 MELT VOLUME RATE (ISO 1133) 5.3.1 250 C, 5 kg 30 - 40 cm3/10 minutes 5.3.2 250 C, 2.16 kg 10 - 15 cm3/10 minutes Note: The material shall be dried for 2 h minimum at 120 - 125 C in a mechanic
21、al convection oven immediately preceding the test. 5.4 MELT VISCOSITY 210 - 250 Pa.s (ASTM D 3035, Capillary Rheometer Capillary 1 mm diameter L/D = 30 temperature: 260 C shear rate: 1.53s-1) The material shall be dried for min 2 h at 120 - 125 C in a mechanical convection oven immediately prior to testing. 5.5 RECYCLING CODE PC+PBT ENGINEERING MATERIAL SPECIFICATIONWSK-M4D763-A3/A5 Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 5 of 5
