1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2010 01 13 N-STATUS No replacement named J. Crist, NA 2006 01 24 Revised Inserted 3.0; Deleted 3.1, 3.2, 3.3, 3.8, 3.9 Corrected numbering 3.7 1990 09 03 Released EP00E01031539000 P. Kuntze Printed copies are uncontrolled Copyright 2010, Ford
2、Global Technologies, LLC Page 1 of 6 POLYCARBONATE + POLYBUTHYLENE TEREPHTHALATE WSK-M4D763-A1 BLEND (PC+PBT), MODIFIED, VERY EASY FLOW MOLDING COMPOUND, EXTERIOR NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is a UV stabilized, cold impact and gasoline resistant,
3、 very easy flow polycarbonate + polybutylene terephthalate blend molding compound for exterior use. 2. APPLICATION This specification was released originally for material used for self-colored bumper shells for the thin wall technology. 3. REQUIREMENTS 3.0 STANDARD REQUIREMENTS FOR PRODUCTION MATERI
4、ALS Material suppliers and part producers must conform to the Companys Standard Requirements For Production Materials (WSS-M99P1111-A). 3.4 MOLDING COMPOUND 3.4.1 Melt Flow Rate (ISO 1133/ASTM D 1238) 3.4.1.1 250 C, 5 kg 28 - 49 g/10 minutes 3.4.1.2 250 C, 2.16 kg 11 - 16 g/10 minutes The material s
5、hall 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 dimensio
6、ns 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 and/or B. The specimens shall be prepared according to ISO 294. No annealing allowed. ENGINEERING MATER
7、IAL SPECIFICATIONWSK-M4D763-A1 Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 2 of 6 3.5.2 Density 1.21 - 1.24 g/cm3(ISO 1183, Method A/ASTM D 792, Method A1) 3.5.3 Tensile Strength at Yield, min 47 MPa (ISO R 527/ASTM D 638M, 150 min x 10 x 4.0 +/- 0.2 mm specime
8、n, 50 mm/minute) 3.5.3.1 Elongation at Break, min 50% (Test Method according to para 3.5.3) 3.5.4 Flexural Modulus, min 1.8 GPa (ISO 178/ASTM D 790M, Method I, Procedure A, 80 x 10 x 4.0 +/- 0.2 mm specimen, 64 mm support span) 3.5.5 Shear Modulus at 23 C 640 - 870 MPa (ASTM D 4065, forced constant
9、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. Specimen length between clamps 35-40 mm. Soak time at each temperature interval - 3 minutes minimum). Additionally, a Shear Modulus vs. Temperature curve sh
10、all be plotted for -50 to +160 C temperature range, at 5 C minimum intervals. The plotted curve must be within tolerance range shown on page 6. 3.5.6 Impact Strength, Izod, min (ISO 180, Method A/ASTM D 256, Method A, 80 x 10 x 4.0 +/- 0.2 mm specimen, 10 specimens for each test) 3.5.6.1 At 23 +/- 2
11、 C 30 kJ/m23.5.6.2 At -40 +/- 2 C 10 kJ/m23.5.6.3 At 10 +/- 2 C 30 kJ/m2The 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 outside, but wi
12、thin 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 60 C 3.5.7.2 At 0.45 MPa 93 C ENGINEERING MATERIAL SPECIFICATIONWSK-M4D763-A1 Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 3 of 6 All spe
13、cimens dry as molded. If not tested immediately after molding, specimens must be stored in a sealed, moisture-proof container filled with silica gel. 3.5.8 Vicat Softening Temperature, min 117 C (ISO 306, 10 x 10 x 4.0 +/- 0.2 mm specimens. Bath - silicone oil, temp. raise 50 +/- 5 C/h. Dial gage re
14、set to 0 after addition of 5 kg weight. At 49.0 N load) All specimens 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/ASTM D 573, 150 +/- 50 air changes/h, 1000 h at 8
15、0 +/- 2 C. Unaged property values shall be determined at the time of the aged properties determination) 3.5.9.1 Tensile Strength Change -15% (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 CHEMICA
16、L RESISTANCE Conduct all tests according to ISO 4599/SAE J2016, except use specimens A defined in para 3.5.1. Test temperature 23 +/- 2 C, 0.7 +/- 0.02% strain. Minimum of 10 specimens for each test. 3.6.1 Immersion in 85% Fuel C + 15% Methanol (Test fluid according to ISO 1817) 3.6.1.1 Elongation a
17、t Break, min 50% Test according to para 3.5.3 after 5 minutes immersion, followed by 25 -30 minutes waiting period after removal from the test fluid. 3.6.2 Immersion in Dewaxing Fluid (EAO ONLY) (Test fluid according to U-MB 005-8000 (FOG) and U-MB 005-8001 (FOB) 3.6.2.1 Elongation at Break, min 50%
18、 Test according to 3.6.1, except immersion time 120 minutes; use 2 fluids. 3.7 WEATHERING RESISTANCE After exposure in accordance with 3.7.1, 3.7.2 and 3.7.3, the material shall show no color change in excess of specified AATCC rating (AATCC Gray scale for Evaluating Change in Color, 10 step). ENGIN
19、EERING MATERIAL SPECIFICATIONWSK-M4D763-A1 Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 4 of 6 In addition, there shall be no cracking, crazing or other deterioration. A slight loss of gloss or chalking will be allowed provided an acceptable appearance can be ac
20、hieved by polishing with Ford car polish (auto wax) at permission of the affected Product Development Materials Activity. All initial approvals will be based on the preliminary Weatherometer exposure (para 3.7.1), pending Florida exposure results for final approval. 3.7.1 Xenon Arc Weatherometer Rat
21、ing 4 (SAE J1960, 660 kJ/m2exposure minimum, specimen size: 150 x 100 mm minimum, 3.2 +/- 0.2 mm thick, molded in smooth polished mold.) 3.7.2 12 months Florida Rating 4 (FLTM BI 160-01, 5 south, direct weathering inland, specimen size: 150 x 100 mm, minimum, 3.2 +/- 0.2 mm thick, molded in smooth p
22、olished mold) 3.7.3 24 month Florida Rating 3 - 4 (FLTM BI 160-01, 5 south, direct weathering inland, specimen size: 150 x 100 mm, minimum, 3.2 +/- 0.2 mm thick, molded in smooth polished mold) 5. GENERAL INFORMATION The information given below is provided for clarification and assistance in meeting
23、 the requirements of this specification. 5.1 COEFFICIENT OF LINEAR THERMAL EXPANSION 10.5-5/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 0.85 - 1.15% 5.2.2 Post Shrinkage (Separate specim
24、ens required for each test) . After 48 h at 80 C 0.3 - 0.5% . After 30 min at 120 C 0.65 - 0.90% ENGINEERING MATERIAL SPECIFICATIONWSK-M4D763-A1 Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 5 of 6 5.3 MELT VOLUME RATE (ISO 1133/ASTM D 1238) 5.3.1 250 C, 5 kg 26
25、- 45 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 mechanical convection oven immediately preceding the test. 5.4 MELT VISCOSITY 170 - 210 Pa.s (ASTM D 3835, Capillary Rheometer, Capillary 1 mm diameter, L/D = 30, temperature: 250 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. ENGINEERING MATERIAL SPECIFICATIONWSK-M4D763-A1 Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 6 of 6
