1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2010 01 22 N-STATUS No replacement named J. Crist, NA 2006 05 17 Revised Inserted 3.0; Deleted 3.1, 3.2, 3.3, 3.7, 3.8 & 4 1993 03 27 Released NB00I10043054232 L.A. Graham Printed copies are uncontrolled Copyright 2010, Ford Global Technologie
2、s, LLC Page 1 of 4 POLYPHENYLENE ETHER + POLYSTYRENE BLEND (PPE+PS) WSB-M4D844-A8 MOLDING COMPOUND NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is a thermoplastic compound based on polyphenylene ether (or polyphenylene oxide) modified with high impact polystyrene
3、 2. APPLICATION This specification was released originally for material used for interior electrical applications including wiring connectors, where lower heat resistance is acceptable. 3. REQUIREMENTS 3.0 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and part producers must con
4、form to the Companys Standard 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 MOLDED TEST SPECIMEN 3.4.1 Preparation of Test Specimens Unless otherwise specified all
5、 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 and
6、/or B. The specimens shall be prepared according to ISO 294. No annealing allowed. 3.4.2 Density 1.02 - 1.18 g/cm (ISO 1183, Method A) (s) 3.4.3 Tensile Strength at Yield, min 47 MPa (ISO R 527, 150 minimum x 10 x 4.0 +/- 0.2 mm specimen, 50 mm/min test speed) (s) 3.4.3.1 Elongation at Break, min 30
7、 (Test Method according to para 3.4.3) ENGINEERING MATERIAL SPECIFICATIONWSB-M4D844-A8Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 2 of 4 (s) 3.4.4 Flexural Modulus, min 2.5 GPa (ISO 178, 80 x 10 x 4.0 +/- 0.2 mm specimen, 2 mm/min test speed, 64 mm support spa
8、n) 3.4.5 Shear Modulus at 23 C 768 - 1152 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. Specimen length between clamps 35-40 mm. Soak time at each temperature interval
9、 3 minutes minimum) Additionally, a Shear Modulus versus Temperature curve 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 4. (s) 3.4.6 Impact Strength, Izod, min (ISO 180/1A, 80 x 10 x 4.0 +/- 0.2 mm spe
10、cimen, 10 specimens for each test) 3.4.6.1 At 23 +/- 2 C 16 kJ/m 3.4.6.2 At -40 +/- 1 C 5 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) 3.4.7 Heat Deflection Tempe
11、rature, min (ISO 75, 120 x 10 x 4.0 +/- 0.2 mm specimen, 0.32 +/- 0.01 mm deflection) 3.4.7.1 At 1.80 MPa 100 C 3.4.7.2 At 0.45 MPa 114 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. (s) 3
12、4.8 Vicat Softening Temperature, min 119 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 50 N load) All specimens dry as molded. If not tested immediately after molding, specimens must be sto
13、red in a sealed, moisture-proof container filled with silica gel. 3.4.9 Heat Aging Performance (ISO 188, except 150 +/- 50 air changes/h, 1000 h at 100 +/- 2 C. Unaged property values shall be determined at the time of the aged properties determination) 3.4.9.1 Tensile Strength Change +/- 25% (Test
14、Method per para 3.4.3) ENGINEERING MATERIAL SPECIFICATIONWSB-M4D844-A8Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 3 of 4 3.4.9.2 Impact Strength, Izod Change +/- 50% (Test Method per para 3.4.6.1, specimens to be notched before heat aging) 3.5 FOGGING (FLTM BO
15、116-03, 3 h at 100 C) Fog Number, min 85 Formation of clear film or droplets is cause for rejection. 3.6 FLAMMABILITY (ISO 3795) Burn Rate, max 100 mm/minute Self-extinguishing (SE) The specimen size required for material approval is 355 x 100 x 2.5 +/- 0.1 mm with a smooth surface. 5. GENERAL INFOR
16、MATION The information given below is provided for clarification and assistance in meeting the requirements of this specification. 5.1 COEFFICIENT OF LINEAR THERMAL EXPANSION 3.6 - 9.0-5/ C (ASTM E 228 or TMA, temperature range -30 to +30 C) 5.2 MOLD SHRINKAGE (ISO 2577, approx. 150 x 100 x 3.2 +/-
17、0.2 mm injection molded specimen) 5.2.1 Molding Shrinkage . After 48 h at 23 +/- 2 C 0.7 - 1.0% 5.2.2 Post Shrinkage (Separate specimens required for each test) . After 48 h at 80 C 0.9 - 1.2% . After 30 min at 120 C 0.9 - 1.2% 5.4 RECYCLING CODE PPE+PS ENGINEERING MATERIAL SPECIFICATIONWSB-M4D844-A8Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 4 of 4
