1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2010 01 20 N-STATUS No replacement named J. Crist, NA 2006 07 17 Revised Inserted 3.0; Deleted 3.1, 3.2, 3.3, 3.8, 3.9 & 4 1994 11 10 Released NB00I10043054388 M. Trapp Printed copies are uncontrolled Copyright 2010, Ford Global Technologies,
2、LLC Page 1 of 5 POLYCYCLOHEXYLENE DEMETHYLENE TEREPHTHALATE, (PCT), WSB-M4D914-A2 15% GLASS FIBER REINFORCED MOLDING COMPOUND NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is a glass reinforced high temperature thermoplastic molding compound based on polycyclohexy
3、lene terephthalate (PCT). 2. APPLICATION This specification was released originally for material used for an engine control unit board connector requiring good electrical properties, and is applicable to the exterior, non-UV exposed applications only. 3. REQUIREMENTS 3.0 STANDARD REQUIREMENTS FOR PR
4、ODUCTION MATERIALS Material suppliers and part producers must conform 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
5、4.1 Melt Flow Rate 24 - 62 g/10 minutes (ISO 1133, 300 C, 2.16 kg) The material shall be dried for 16 h minimum at 75 C in a vacuum oven, nitrogen purge, immediately preceding the test. (s) 3.4.2 Filler Content 13 - 18% (ISO 3451/2, 3 h at 600 +/- 25 C, 5 g test sample) (s) 3.4.3 Melt Temperature,
6、min 280 C (ISO 3146, Method C, 10 C/min heating rate) 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 required: A. 150 min x 10 x 4.0 +/- 0.2 mm (Tens
7、ile Bar, ISO 3167) B. 120 x 10 x 4.0 +/- 0.2 mm ENGINEERING MATERIAL SPECIFICATIONWSB-M4D914-A2Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 2 of 5 Specimens with shorter dimensions shall be cut from the center portion of the test specimen A and/or B. The specime
8、ns shall be prepared according to ISO 294. No annealing allowed. 3.5.2 Density 1.31 - 1.37 g/cm (ISO 1183, Method A) (s) 3.5.3 Tensile Strength at Max Load, min 66 MPa (ISO R 527, 150 minimum x 10 x 4.0 +/- 0.2 mm specimen, 5 mm/min test speed) (s) 3.5.4 Flexural Modulus, min 4.7 GPa (ISO 178, 80 x
9、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 1.35 - 2.25 GPa (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 le
10、ngth 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 +250 C temperature range, at 5 C minimum intervals. The plotted curve must be within tolerance range shown on page 5. (s) 3.5.6
11、 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 3.4 kJ/m 3.5.6.2 At -40 +/- 1 C 4.2 kJ/mThe test specimens must be conditioned for minimum of 6 h at the above specified temperature prior to impact test. Low temperature tes
12、ting 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 mm deflection) 3.5.7.1 At 1.80 MPa 210 C 3.5.7.2 At 0.45 MPa 260 C All specimens dry as molded. If not tested immediately after molding, specimens mu
13、st be stored in a sealed, moisture-proof container filled with silica gel. ENGINEERING MATERIAL SPECIFICATIONWSB-M4D914-A2Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 3 of 5 3.5.9 Heat Aging Performance (ISO 188, except 150 +/- 50 air changes/h, 1000 h at 160 +/
14、 2 C. After heat aging test specimens are to be conditioned in a desiccator for 3 - 5 h at 23 +/- 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 +/- 25% (Tes
15、t Method per para 3.5.6.1, specimens to be notched before heat aging) 3.6 FOGGING (FLTM BO 116-03, 3 h at 100 C heating, 21 C cooling plate) Fog Number, min 40 Formation of a clear film, droplets or crystals is cause for rejection. THIS MATERIAL IS NOT TO BE USED FOR INTERIOR APPLICATIONS. 3.7 FLAMM
16、ABILITY (ISO 3795/SAE J369) Burn Rate, max 100 mm/minute The specimen size required for material approval is 355 x 100 x 1.60 +/- 0.1 mm with a smooth surface. 5. GENERAL INFORMATION The information given below is provided for clarification and assistance in meeting the requirements of this specific
17、ation. 5.1 COEFFICIENT OF LINEAR THERMAL EXPANSION (ASTM E 831 TMA, temperature range -30 to +30 C) Transverse 4.8-5/ C Parallel 3.3-5/ C 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 ENGINEERING MATERIA
18、L SPECIFICATIONWSB-M4D914-A2Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 4 of 5 Transverse 1.1% Parallel 0.65% 5.2.2 Post Shrinkage (Separate specimens required for each test) . After 48 h at 80 C Transverse 1.18% Parallel 0.67% . After 30 min at 120 C Transverse 1.1% Parallel 0.53% 5.3 WATER ABSORPTION 0.05% (ISO 62, 24 h immersion, 50 +/- 1 mm diameter, 3.2 +/- 0.2 mm thick specimen) 5.4 RECYCLING CODE PCT-GF15 ENGINEERING MATERIAL SPECIFICATIONWSB-M4D914-A2Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 5 of 5
