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 09 Released NB00I10043054386 M. Trapp Printed copies are uncontrolled Copyright 2010, Ford Global Technologies,
2、LLC Page 1 of 5 POLYCYCLOHEXYLENE DIMETHYLENE TEREPHTHALATE (PCT) WSB-M4D914-A 30% GLASS FIBER REINFORCED MOLDING COMPOUND NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is a glass fiber filled thermoplastic molding compound based on polycyclohexylene dimethylene t
3、erephthalate (PCT). 2. APPLICATION This specification was released originally for material used for a engine control unit board connector requiring good electrical properties. 3. REQUIREMENTS 3.0 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and part producers must conform to the
4、 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 24 - 36 g/10 minutes (ISO 1133, 300 C, 2.16 kg) The mate
5、rial shall be dried for 16 h minimum at 75 C in a mechanical convection oven immediately preceding the test. (s) 3.4.2 Glass Fiber Content 27 - 35% (ISO 3451/2, 600 +/- 25 C for 3 h, 5 g samples) (s) 3.4.3 Melt Temperature, min 278 C (ISO 3146, Method C, 10 C/min heating rate) 3.5 MOLDED TEST SPECIM
6、EN 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 (Tensile Bar, ISO 3167) B. 120 x 10 x 4.0 +/- 0.2 mm ENGINEERING MATERIAL SPECIFI
7、CATIONWSB-M4D914-APrinted 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 specimens shall be prepared according to ISO 294. No annealing allowed. 3.5.2 Densit
8、y 1.42 - 1.48 g/cm (ISO 1183, Method A) (s) 3.5.3 Tensile Strength at Max Load, min 99 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 7.8 GPa (ISO 178, 80 x 10 x 4.0 +/- 0.2 mm specimen, 2 mm/min test speed, 64 mm support span) 3.5.5
9、Shear Modulus at 23 C 1.80 - 3.00 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 length between clamps 35-40 mm. Soak time at each temperature interval - 3 minu
10、tes 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 Impact Strength, Izod, min (ISO 180/1A, 80 x 10 x 4.0 +/- 0.2 mm specimen, 1
11、0 specimens for each test) 3.5.6.1 At 23 +/- 2 C 5.6 kJ/m 3.5.6.2 At -40 +/- 1 C 4.6 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. (s) 3.5.7 Heat Deflection Temperature
12、, min (ISO 75, 120 x 10 x 4.0 +/- 0.2 mm specimen, 0.32 +/- 0.01 mm deflection, tested edgewise) 3.5.7.1 At 1.80 MPa 245 C 3.5.7.2 At 0.45 MPa 270 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
13、 gel. ENGINEERING MATERIAL SPECIFICATIONWSB-M4D914-APrinted copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 3 of 5 3.5.8 Heat Aging Performance (ISO 188, except 150 +/- 50 air changes/h, 1000 h at 170 +/- 2 C. Unaged property values shall be determined at the time of the a
14、ged properties determination) 3.5.8.1 Tensile Strength at Max Load Change +/- 25% (Test Method per para 3.5.3) 3.5.8.2 Impact Strength, Izod Change +/- 25% (Test 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, 21 C cooling plate) Fog Num
15、ber, min 60 Formation of clear film, droplets or crystals is cause for rejection. 3.7 FLAMMABILITY (ISO 3795) Burn Rate, max 100 mm/minute The specimen size required for material approval is 355 x 100 x 1.0 +/- 0.1 mm with a smooth surface. 5. GENERAL INFORMATION The information given below is provi
16、ded 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) Transverse 5.8-5/ C Parallel 2.1-5/ C 5.2 MOLD SHRINKAGE (ISO 2577, approx. 150 x 100 x 3.2 +/- 0.2 mm injection mold
17、ed specimen) 5.2.1 Molding Shrinkage . After 48 h at 23 +/- 2 Transverse 1.1% Parallel 0.4% ENGINEERING MATERIAL SPECIFICATIONWSB-M4D914-APrinted copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 4 of 5 5.2.2 Post Shrinkage (Separate specimens required for each test) . After
18、 48 h at 80 C Transverse 1.12% Parallel 0.42% . After 30 minutes at 120 C Transverse 1.08% Parallel 0.41% 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-GF30 ENGINEERING MATERIAL SPECIFICATIONWSB-M4D914-APrinted copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 5 of 5
