1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2010 07 14 N-STATUS No replacement A. Pan, APA 2006 07 18 Revised Inserted 3.0; Deleted 3.1, 3.2, 3.3, 3.8, 3.9 & 4 1995 02 23 Released NB00I10043054421 J. LaDuke Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Pa
2、ge 1 of 5 POLYCARBONATE + POLYBUTYLENE TEREPHTHALATE BLEND WSB-M4D928-A1 (PC+PBT), MODIFIED MOLDING COMPOUND, RECYCLATE NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is a thermoplastic molding compound based on polycarbonate and polybutylene terephtalate blend, co
3、ntaining a minimum of 25% post consumer material. 2. APPLICATION This specification was released originally for material used for backcan of a rear lamp body. 3. REQUIREMENTS 3.0 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and part producers must conform to the Companys Standar
4、d Requirements For Production Materials (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 20 - 40 g/10 minutes (ISO 1133, 250 C, 5.0 kg) The material shall be drie
5、d 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 dimensions are requi
6、red: 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. 3.5.2 Density 1.19 - 1.23 g/c
7、m (ISO 1183, Method A) ENGINEERING MATERIAL SPECIFICATIONWSB-M4D928-A1Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 2 of 5 (s) 3.5.3 Tensile Strength at Yield, min 45 MPa (ISO R 527, 150 minimum x 10 x 4.0 +/- 0.2 mm specimen, 50 mm/min test speed) (s) 3.5.3.1 El
8、ongation at Break, min 10% (Test Method according to para 3.5.3) (s) 3.5.4 Flexural Modulus, min 1.73 GPa (ISO 178, 80 x 10 x 4.0 +/- 0.2 mm specimen, 2 mm/min test speed, 64 mm support span) 3.5.5 Shear Modulus at 23 C 720 - 1080 MPa (ASTM D 4065, forced constant amplitude, fixed frequency of 1 Hz
9、+/- 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 curve shall be plotted for -50 to +170 C
10、temperature range, 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 24 kJ/m 3.5.6.2 At -40 +/- 1 C 5 kJ/m 3.5.6.3 At 0 +/-
11、 2 C 22 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. (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 m
12、m deflection) 3.5.7.1 At 1.80 MPa 65 C 3.5.7.2 At 0.45 MPa 94 C 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. ENGINEERING MATERIAL SPECIFICATIONWSB-M4D928-A1Printed copies are uncontrolled
13、Copyright 2010, Ford Global Technologies, LLC Page 3 of 5 (s) 3.5.8 Vicat Softening Temperature, min 108 C (ISO 306, 10 x 10 x 4.0 +/- 0.2 mm specimens. Bath - silicone oil, temperature raise 50 +/- 5 C/h. Dial gage reset to 0 after addition of 5 kg weight. At 49.0 N load) All specimens dry as molde
14、d. 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 the aged properti
15、es determination) 3.5.9.1 Tensile Strength at Yield Change +/- 25% (Test Method per para 3.5.3) 3.5.9.2 Impact Strength, Izod Change +/- 25% (Test Method per para 3.5.6.1, specimens to be notched before heat aging) 3.6 FOGGING (FLTM BO 116-03, 1 h at 100 C heating, 21 C cooling plate) Fog Number, mi
16、n 90 Formation of clear film, droplets or crystals is cause for rejection. 3.7 FLAMMABILITY (ISO 3795/SAE J369) Burn Rate, max 100 mm/minute The specimen size required for material approval is 355 x 100 x 2.0 +/- 0.1 mm with a smooth surface. 5. GENERAL INFORMATION The information given below is pro
17、vided for clarification and assistance in meeting the requirements of this specification. 5.1 COEFFICIENT OF LINEAR THERMAL EXPANSION 9.2-5/ C (ASTM E 831 TMA, temperature range -30 to +30 C) ENGINEERING MATERIAL SPECIFICATIONWSB-M4D928-A1Printed copies are uncontrolled Copyright 2010, Ford Global T
18、echnologies, LLC Page 4 of 5 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 0.92% 5.2.2 Post Shrinkage (Separate specimens required for each test) . After 48 h at 80 C 1.10% . After 30 min at 120 C 1.78% 5.3 RECYCLING CODE PC+PBT ENGINEERING MATERIAL SPECIFICATIONWSB-M4D928-A1Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 5 of 5
