1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2010 09 10 N-STATUS Replaced by WSS-M4D1051-A1, WSS-M4D1052-A2, WSS-M4D1053-A1, WSS-M4D1053-A2 L. Soreide, NA 2006 07 18 Revised Inserted 3.0; Deleted 3.1, 3.2, 3.3, 3.8, 3.9 & 4 1996 02 12 Activated S. DeGrood Printed copies are uncontrolled
2、Copyright 2010, Ford Global Technologies, LLC Page 1 of 4 POLYCARBONATE (PC), IMPACT MODIFIED, 25% MINIMUM WSS-M4D926-A2 RECYCLED CONTENT MOLDING COMPOUND NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is a thermoplastic molding compound based on impact modified po
3、lycarbonate containing a minimum of 25% post consumer recycled polycarbonate. 2. APPLICATION This specification was released originally for material used in electronic module housings. 3. REQUIREMENTS 3.0 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and part producers must confo
4、rm 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 MOLDING COMPOUND (s) 3.4.1 Melt Flow Rate 2.6 - 30.6 g/10 minutes (ISO 1133, 300 C, 1.2 k
5、g) The material shall 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 f
6、ollowing dimensions are required: A. 150 minimum x 10 x 4.0 +/- 0.2 mm (ISO 3167, Type 1A) B. 60 x 60 x 2.0 +/- 0.1 mm (ISO/DIS 294-3) C. 355 x 100 x 1.6 +/-0.1 mm (ISO 3795) Test specimen A shall be molded using molding conditions defined in ISO 294. Specimens with shorter dimensions shall be cut f
7、rom the center of the specimen A. No annealing allowed. 3.5.2 Density 1.17 - 1.20 g/cm (ISO 1183, Method A) ENGINEERING MATERIAL SPECIFICATIONWSS-M4D926-A2Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 2 of 4 (s) 3.5.3 Tensile Strength at Max Load, min 50 MPa (ISO
8、 527-1 & ISO 527-2, 150 minimum x 10 x 4.0 +/- 0.2 mm specimen, test speed: 50 mm/minute) (s) 3.5.4 Flexural Modulus, min 2.1 GPa (ISO 178, 80 x 10 x 4.0 +/- 0.2 mm specimen use center section of specimen A, 2 mm/min test speed, 64 mm support span) 3.5.5 Shear Modulus at 23 C 680 - 1030 MPa (ASTM D
9、5279, 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 - 3 minutes minimum) Additionally, a shear modulus v
10、ersus temperature curve shall be plotted for -50 to +170 C temperature range, at 5 C minimum intervals. The plotted curve must be within tolerance range granted on the original material approval and it shall constitute the reference standard for materials supplied to this specification and shall be
11、kept on file at the designated material laboratory and be available on request. (s) 3.5.6 Impact Strength, Izod, min (ISO 180/1A, 80 x 10 x 4.0 +/- 0.2 mm specimen use center section of specimen A, 10 specimens for each test) 3.5.6.1 At 23 +/- 2 C 32.2 kJ/m 3.5.6.2 At -40 +/- 1 C 20.3 kJ/m The test
12、specimen must be conditioned for minimum of 6 hours at the above specified temperature prior to impact test. Low temperature testing shall be done within the cold chamber, if not possible, test may be conducted outside, but within 5 seconds. (s) 3.5.7 Heat Deflection Temperature, min 113 C (ISO 75-1
13、 & ISO 75-2, 80 x 10 x 4.0 +/- 0.2 mm specimen use center section of specimen A, flatwise, 0.34 +/- 0.1 mm deflection. At 1.80 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. ENGINEERING
14、 MATERIAL SPECIFICATIONWSS-M4D926-A2Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 3 of 4 (s) 3.5.8 Vicat Softening Temperature, min 131 C (ISO 306, 10 x 10 x 4.0 +/- 0.2 mm specimens use center section of specimen A. Bath - silicone oil, temperature raise 50 +/-
15、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 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
16、, 1000 h at 95 +/- 2 C. Unaged property values shall be determined at the time of the aged properties determination) 3.5.9.1 Tensile Strength at Max Load Change +/- 25% 3.5.9.2 Impact Strength, Izod Change +/- 50% (Test Method per para 3.5.6.1, specimens to be notched before heat aging) 3.6 FOGGING
17、(SAE J1756, 3 h at 100 C heating, 21 C cooling plate, post test conditioning 1 h) Fog Number, min 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
18、 1.6 +/- 0.1 mm (use specimen C) with a smooth surface. 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 (ASTM E 831 TMA, temperature range -30 to +30 C) . Fl
19、ow Direction 4.4-5/ C . Transverse to Flow 4.3-5/ C ENGINEERING MATERIAL SPECIFICATIONWSS-M4D926-A2Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 4 of 4 5.2 MOLD SHRINKAGE (ISO/DIS 294-3, 60 x 60 x 2.0 +/- 0.1 mm injection molded specimen) 5.2.1 Molding Shrinkage
20、. After 48 h at 23 +/- 2 C 0.14% 5.2.2 Post Shrinkage (Separate specimens required for each test) . After 48 h at 80 C 0.04% . After 30 minutes at 120 C 0.01% 5.3 HEAT DEFLECTION TEMPERATURE (ISO 75-1 & ISO 75-2, 80 x 10 x 4.0 +/- 0.2 mm specimen use center section of specimen A, edgewise, 0.32 +/-
21、0.1 mm deflection.) 5.3.1 At 1.80 MPa 113 C 5.3.2 At 0.45 MPa 130 C 5.4 MELT VOLUME RATE 11 - 22 cm/10 minutes (ISO 1133, 300 C, 1.2 kg) The material shall be dried for 2 h minimum at 120 - 125 C in a mechanical convection oven immediately preceding the test. 5.5 MATERIAL IDENTIFICATION FOR RECYCLING PURPOSES PC
