1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2010 01 12 N-STATUS No replacement named J. Crist, NA 2006 01 12 Revised Inserted 3.0; Deleted 3.1, 3.2, 3.3, 3.7, 3.8 & 4 1990 12 11 Released NB00I10043054053 L.A. Graham Printed copies are uncontrolled Copyright 2010, Ford Global Technologie
2、s, LLC Page 1 of 4 POLYPHENYLENE ETHER (PPE), MODIFIED MOLDING WSB-M4D747-A COMPOUND NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is a thermoplastic molding compound based on polyphenylene ether modified with high impact polystyrene. 2. APPLICATION This specifica
3、tion was released originally for material used for painted or cloth covered speaker grilles. 3. REQUIREMENTS 3.0 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and part producers must conform to the Companys Standard Requirements For Production Materials (WSS-M99P1111-A). 3.4 MOLD
4、ED TEST SPECIMEN 3.4.1 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 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
5、 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. 3.4.2 Density 1.02 - 1.09 g/cm3(ISO 1183, Method A/ASTM D 792, Method A1) 3.4.3 Tensile Strength at Yield, min 36 MPa (ISO R 527/ASTM
6、D 638M, 150 min x 10 x 4.0 +/- 0.2 mm specimen, 50 mm/min test speed) 3.4.3.1 Elongation at Yield, min 40% (Test Method according to para 3.4.3) ENGINEERING MATERIAL SPECIFICATIONWSB-M4D747-A Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 2 of 4 3.4.4 Flexural Mod
7、ulus, min 1.6 GPa (ISO 178/ASTM D 790M, Method I, Procedure A, 80 x 10 x 4.0 +/- 0.2 mm specimen, 64 mm support span) 3.4.5 Shear Modulus at 23 C 590 - 884 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 c
8、ut 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 +150 C temperature range, at 5 C minimum intervals. The plotted curve must be within
9、 tolerance range shown on page 4. 3.4.6 Impact Strength, Izod, min (ISO 180, Method A/ASTM D 256, Method A, 63.4 x 10 x 4.0 +/- 0.2 mm specimen, 10 specimens for each test) 3.4.6.1 At 23 +/- 2 C 26 kJ/m23.4.6.2 At -40 +/- 2 C 8 kJ/m23.4.6.3 At -29 +/- 2 C 20 kJ/m2The test specimens must be condition
10、ed 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. 3.4.7 Heat Deflection Temperature, min (ISO 75/ASTM D 648, 120 x 10 x 4.0 +/- 0.2 mm specimen) 3.4
11、7.1 At 1.82 MPa 98 C 3.4.7.2 At 0.45 MPa 115 C 3.4.8 Vicat Softening Temperature, min 112 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 49.0 N load) All specimens dry as molded. If not tested imm
12、ediately after molding, specimens must be stored in a sealed, moisture-proof container filled with silica gel. ENGINEERING MATERIAL SPECIFICATIONWSB-M4D747-A Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 3 of 4 3.4.9 Heat Aging Performance (ISO 188/ASTM D 573, 15
13、0 +/- 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 Method per para 3.4.3) 3.4.9.2 Impact Strength, Izod Change +/- 25% (Test Method per para 3.4.6.1, specimens to be
14、 notched before heat aging) 3.5 FLAMMABILITY (ISO 3795) Burn Rate, max 100 mm/minute The specimen size required for material approval is 355 x 100 x 2.5 +/- 0.1 mm with a smooth surface. 3.6 FOGGING (FLTM BO 116-03) Fog Number, min 90 Formation of excessive amounts of clear film or droplets is cause
15、 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 6.5-5/ C (ASTM D 696) 5.2 MOLD SHRINKAGE (ISO 2577, approx. 150 x 100 x 3.2 +/- 0.2 mm inject
16、ion molded specimen) 5.2.1 Molding Shrinkage . After 48 h at 23 +/- 2 C 0.5 - 0.8% 5.2.2 Post Shrinkage (Separate specimens required for each test) . After 48 h at 80 C 0.5 - 0.8% . After 30 min at 120 C 0.5 - 0.8% ENGINEERING MATERIAL SPECIFICATIONWSB-M4D747-A Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 4 of 4
