1、 ENGINEERING MATERIAL SPECIFICATION Date Action Revisions Rev 03 2011 10 06 Activated Re-Activate C. Mracna, NA 2011 03 01 N Status No replacement named A. Pan, APA 2002 09 30 Revised M. A. Myers Controlled document at www.MATS Copyright 2011, Ford Global Technologies, LLC Page 1 of 6 POLYPHENYLENE
2、ETHER + POLYAMIDE BLEND (PPE+PA) WSS-M4D891-A3 MOLDING COMPOUND, HIGH IMPACT AND HIGHER FLOW 1. SCOPE The material defined by this specification is a thermoplastic molding compound based on polyphenylene ether and polyamide blend. 2. APPLICATION This specification was released originally for materia
3、l used for fuel filler doors. Notice: This material absorbs and retains moisture. Part design and tolerances must accommodate changes in part dimensions and physical properties due to moisture absorption or loss in the service/assembly environment. 3. REQUIREMENTS 3.1 STANDARD REQUIREMENTS FOR PRODU
4、CTION MATERIALS Material suppliers and part producers must conform to the Companys Standard Requirements For Production Materials (WSS-M99P1111-A). 3.2 MOLDING COMPOUND 3.2.1 Melt Volume Rate 5.0 - 10.0 g/10 minutes (ISO 1133, 280 C, 2.16 kg) The material shall be dried for 30 minutes minimum at 95
5、C in a mechanical convection oven immediately preceding the test. 3.3 MOLDED TEST SPECIMEN 3.3.1 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 +/-
6、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 portion of the test specimen A and/or B. The specimens shall be prepared according to ISO 294. No annealing allowed. ENGINEERING MATERIAL SPECIFICATION WSS-M4D891-A3 Copyright 2
7、011, Ford Global Technologies, LLC Page 2 of 6 3.3.2 Density 1.02 - 1.18 g/cm3 (ISO 1183, Method A) 3.3.3 Tensile Strength at Yield 46 MPa min (ISO R 527, 150 minimum x 10 x 4.0 +/- 0.2 mm specimen, 50 mm/min test speed) 3.3.3.1 Elongation at Yield 4.7% min (Test Method according to para 3.3.3) 3.3.
8、4 Flexural Modulus 1.5 GPa min (ISO 178, 80 x 10 x 4.0 +/- 0.2 mm specimen, 2 mm/min test speed, 64 mm support span) 3.3.5 Impact Strength, Izod (ISO 180/1A, 80 x 10 x 4.0 +/- 0.2 mm specimen, 10 specimens for each test) 3.3.5.1 At 23 +/- 2 C 36.0 kJ/m2 min 3.3.5.2 At -40 +/- 1 C 18.0 kJ/m2 min The
9、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. 3.3.6 Heat Deflection Temperature (ISO 75, 120 x 10 x 4.0 +/- 0.2 mm specimen, flatwise, 0.32 +/- 0.01 mm deflection) 3.3.6.1 At 1
10、80 MPa 86 C min 3.3.6.2 At 0.45 MPa 172 C min 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. 3.3.7 Vicat Softening Temperature 172 C min (ISO 306, 10 x 10 x 4.0 +/- 0.2 mm specimens. Bath -
11、 silicone oil, temperature raise 50 +/- 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. ENGINEERING MATERIAL SPECIFICA
12、TION WSS-M4D891-A3 Copyright 2011, Ford Global Technologies, LLC Page 3 of 6 3.3.8 Heat Aging Performance (ISO 188, except 150 +/- 50 air changes/h, 1000 h at 85 +/- 2 C. Unaged property values shall be determined at the time of the aged properties determination) 3.3.8.1 Tensile Strength at Yield Ch
13、ange +/- 25% (Test Method per para 3.5.3) 3.3.8.2 Impact Strength, Izod Change +/- 25% (Test Method per para 3.5.6.1, specimens to be notched before heat aging) 3.4 FOGGING (SAE J1756, 3 h at 100 C heating, 21 C cooling plate, post test conditioning 1 h and 16 h) Fog Number 90 min Formation of clear
14、 film, droplets or crystals is cause for rejection. 3.5 FLAMMABILITY (ISO 3795) Burn Rate 100 mm/minute max The specimen size required for material approval is 355 x 100 x 2.5 +/- 0.1 mm with a smooth surface. 4. GENERAL INFORMATION The information given below is provided for clarification and assis
15、tance in meeting the requirements of this specification. 4.1 COEFFICIENT OF LINEAR THERMAL EXPANSION 7.0 - 9.0-5 mm/ C (ASTM E 831 (TMA), temperature range -30 to +50 C) 4.2 MOLD SHRINKAGE (ISO 2577, approx. 150 x 100 x 3.2 +/- 0.2 mm injection molded specimen) 4.2.1 Molding Shrinkage After 48 h at
16、23 C +/- 2 C 1.2% 4.2.2 Post Shrinkage (Separate specimens required for each test) After 48 h at 80 C 0.4% After 30 minutes at 120 C 0.4% ENGINEERING MATERIAL SPECIFICATION WSS-M4D891-A3 Copyright 2011, Ford Global Technologies, LLC Page 4 of 6 4.3 MELT FLOW RATE (ISO 1133, 280 C, 2.16 kg) 5.7 - 8.4
17、g/10 minutes 4.4 WATER ABSORPTION 0.2% (ISO 62, 24 h immersion, 50 +/- 1 mm diameter, 3.2 +/- 0.2 mm thick specimen) 4.5 RECYCLING CODE PPE+PA 4.6 SHEAR MODULUS at 23 C 650 - 990 MPa (ASTM D 4065, forced constant amplitude, fixed frequency of 1 Hz +/- 15%, strain level below 1%. Specimens approximat
18、ely 60 x 10 x 4.0 +/- 0.2mm cut from the center of specimen A. Specimen length between clamps 35 40 mm. Soak time at each temperature interval 3 minutes min) Additionally, a shear modulus versus temperature curve shall be plotted for -50 to +220 C temperature range, at 5 C min intervals. The plotted
19、 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 kept on file at the designated material laboratory and be available on request. 4.7 Provide a curve of tensile stre
20、ss/strain using one specimen at each of the following temperatures: 23, 50, 80 and 105 C. For ductile materials, the curve shall cover strain through yield point. ENGINEERING MATERIAL SPECIFICATION WSS-M4D891-A3 Copyright 2011, Ford Global Technologies, LLC Page 5 of 6 ENGINEERING MATERIAL SPECIFICATION WSS-M4D891-A3 Copyright 2011, Ford Global Technologies, LLC Page 6 of 6
