1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2010 01 22 N-STATUS No replacement named J. Crist, NA 2006 05 18 Revised Inserted 3.0; Deleted 3.1, 3.2, 3.3, 3.8, 3.9 & 4 1992 12 01 Released EP00E10176314000 P. Kuntze Printed copies are uncontrolled Copyright 2010, Ford Global Technologies,
2、 LLC Page 1 of 5 POLYPHENYLENE ETHER + POLYSTYRENE BLEND WSK-M4D844-A7 (PPE+PS), HIGH HEAT MOLDING COMPOUND NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is a high heat thermoplastic blend molding compound based on polyphenylene ether modified with high impact pol
3、ystyrene. 2. APPLICATION This specification was released originally for material used for non-visible loudspeaker devices. 3. REQUIREMENTS 3.0 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and part producers must conform to the Companys Standard Requirements For Production Materi
4、als (WSS-M99P1111-A). 3.4 MOLDING COMPOUND 3.4.1 Melt Flow Rate 2 - 8 g/10 minutes (ISO 1133/ASTM D 1238, 300 C, 2.16 kg) The material shall be dried for 2 h minimum at 115 120 C in a mechanical convection oven immediately preceding the test. 3.5 MOLDED TEST SPECIMEN 3.5.1 Preparation of Test Specim
5、ens Unless otherwise specified all 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
6、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 1.03 - 1.10 g/cm (ISO 1183, Method A/ASTM D 792, Method A1) ENGINEERING MATERIAL SPECIFICATIONWSK-M4D844-A7Printed copies are uncontrolled Copyright 2006, Ford Global Te
7、chnologies, LLC Page 2 of 5 3.5.3 Tensile Strength at Max Load, min 55 MPa (ISO R 527/ASTM D 638M, 150 min x 10 x 4.0 +/- 0.2 mm specimen, 5 mm/min test speed) 3.5.3.1 Elongation at Break, min 10% (Test according to para 3.5.3) 3.5.4 Flexural Modulus, min 2.3 GPa (ISO 178/ASTM D 790M, Method I, Proc
8、edure A, 80 x 10 x 4.0 +/- 0.2 mm specimen, 2 mm/min test speed, 64 mm support span, the radius of the loading nose 5.0 +/- 0.1 mm and of the supports 2.0 +/- 0.2 mm) 3.5.5 Shear Modulus at 23 C 780 - 1050 MPa (ASTM D 4065, forced constant amplitude, fixed frequency of 1 Hz +/- 15%, strain level bel
9、ow 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 range, at 5 C mi
10、nimum 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, 80 x 10 x 4.0 +/- 0.2 mm specimen, 10 specimens for each test) 3.5.6.1 At 23 +/- 2 C 15 kJ/m 3.5.6.2 At -20 +/- 2 C 9 kJ/m 3.5.6.3 At -40 +/- 2
11、 C 6 kJ/mThe 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 within 5 s. 3.5.7 Heat Deflection Temperature, min 118 C (ISO 75/
12、ASTM D 648, 120 x 10 x 4.0 +/- 0.2 mm specimen, at standard deflection of 0.32 +/- 0.01 mm. At 1.80 MPa) 3.5.8 Vicat Softening Temperature, min 137 C (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 49
13、.0 N load) ENGINEERING MATERIAL SPECIFICATIONWSK-M4D844-A7Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 3 of 5 All specimens dry as molded. If not tested immediately after molding, specimens must be stored in a sealed, moisture-proof container filled with silica
14、gel. 3.5.9 Heat Aging Performance (ISO 188/ASTM D 573, 150 +/- 50 air changes/h, 1000 h at 90 +/- 2 C. Unaged property values shall be determined at the time of the aged properties determination) 3.5.9.1 Tensile Strength at Change +/- 15% (Test Method per para 3.5.3) 3.5.9.2 Impact Strength, Izod Ch
15、ange, max -30% (Test Method per para 3.5.6.1, specimens to be notched before heat aging) 3.6 FLAMMABILITY (ISO 3795) Burn Rate, max 100 mm/minute Self-extinguishing The specimen size required for material approval is 355 x 100 x 1.0 +/- 0.1 mm with a smooth surface. 3.7 FOGGING (FLTM BO 116-03) Fog
16、Number, min 95 Formation of excessive amounts of clear film or droplets is cause for rejection. 5. GENERAL INFORMATION The information given below is provided for clarification and assistance in meeting the requirements of this specification. 5.1 COEFFICIENT OF LINEAR THERMAL EXPANSION 6.5 - 8.5-5/
17、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 0.5 - 0.7% 5.2.2 Post Shrinkage (Separate specimens required for each test) . After 48 h at 80 C 0.1% . After 30 min at 120 C 0.15 - 25% ENGIN
18、EERING MATERIAL SPECIFICATIONWSK-M4D844-A7Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 4 of 5 5.3 MELT VOLUME RATE 5 - 10 cm/10 minutes (ISO 1133/ASTM D 1238, 280 C, 5 kg) 5.4 HEAT DEFLECTION TEMPERATURE, min 123 C (ISO 75/ASTM D 648, 120 x 10 x 4.0 +/- 0.2 mm s
19、pecimen, at standard deflection of 0.32 +/- 0.01 mm. At 0.45 MPa) 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. 5.5 VICAT SOFTENING TEMPERATURE, min 144 C (ISO 306, 10 x 10 x 4.0 +/- 0.2 mm s
20、pecimens. Bath - silicone oil, temp. raise 50 +/- 5 C/h. Dial gage reset to 0 after addition of 1 kg weight. At 9.81 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. 5.6 RECYCLING CODE PPE+PS ENGINEERING MATERIAL SPECIFICATIONWSK-M4D844-A7Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 5 of 5
