1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2010 02 16 Revised Revised Item 5.6 MATERIAL IDENTIFICATION FOR RECYCLING PURPOSES (recycling code was printed wrong) M. Souza2005 12 12 Revised Inserted 3.0; Deleted 3.1, 3.2, 3.3, 3.8, 3.9 & 4 1997 05 28 Activated M. Myers Printed copies are
2、 uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 1 of 5 POLYETHYLENE TEREPHTHALATE (PET) 30% GLASS WSS-M4D726-A3 FIBER REINFORCED POST CONSUMER RECYCLATE MOLDING COMPOUND 1. SCOPE The material defined by this specification is a 30% glass fiber reinforced molding compound based on pol
3、yethylene terephthalate (PET) and containing a minimum of 25% and up to 100% post consumer recyclate. 2. APPLICATION This specification was released originally for material used for wiper system components. 3. REQUIREMENTS 3.0 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and par
4、t producer 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) 3.4.1 Glass Fiber Content 28 - 32% (ISO 3451-2
5、, Method A) The material shall be dried for 4 h minimum at 130 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. Th
6、e following dimensions are required: A. 150 min 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 1.0 +/- 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. ENGINEERING MATERIAL SPECIFICATIONWSS-M4D726-A3 Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 2 of 5 3.5.2 Density 1.53 - 1.63 g/cm3(ISO 1183, Method A) (s) 3.5.3 Tensile Strength at Break, min 110 MPa (ISO
8、527-1 & ISO 527-2, 150 minimum x 10 x 4.0 +/- 0.2 mm specimen, test speed: 5 mm/minute) (s) 3.5.4 Flexural Modulus, min 8.0 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 1.57 - 2.61 GPa (ASTM D 5
9、279, forced constant amplitude, fixed frequency of 1 Hz +/- 15%, strain level below 1%. Specimen approximately 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 mod
10、ulus 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 granted on the original material approval and it shall constitute the reference standard for materials supplied to this specification and sha
11、ll be 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 6.0 kJ/m23.5.6.2 At -25 +/- 1 C 3.1 kJ/m23.5.6
12、.3 At -40 +/- 2 C 1.6 kJ/m2The test 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 Deflect
13、ion Temperature, min 225 C (ISO 75-1 & 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) ENGINEERING MATERIAL SPECIFICATIONWSS-M4D726-A3 Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 3
14、 of 5 3.5.8 Heat Aging Performance (ISO 188, except 150 +/- 50 air changes/h, 1000 h at 140 +/- 2 C. Unaged property values shall be determined at the time of the aged properties determination) 3.5.8.1 Tensile Strength at Break Change +/- 25% (Test Method per para 3.5.3) 3.5.8.2 Impact Strength, Izo
15、d Change +/- 25% (Test Method per para 3.5.6.1, specimens to be notched before heat aging) 3.6 FOGGING (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
16、/SAE J369) Burn Rate, max 100 mm/minute The specimen size required for material approval is 355 x 100 x 1.0 +/- 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 specifica
17、tion. 5.1 COEFFICIENT OF LINEAR THERMAL EXPANSION (ASTM E 831 TMA, temperature range 30 - 30 C) Flow Direction 3.06-5/ C Cross Flow Direction 4.79-5/ C 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 . After 48 h at 23 +/- 2 C 0.16% ENGI
18、NEERING MATERIAL SPECIFICATIONWSS-M4D726-A3 Printed 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 48 h at 80 C 0.04% . After 30 minutes at 120 C 0.06% 5.3 MELT TEMPERATURE, min 245 C (ISO 314
19、6, Method C, 10 C/min heating rate) 5.4 MELT FLOW RATE (TYPICAL) 6 g/10 minutes (ISO 1133, 280 C, 2.16 kg) 5.5 HEAT DEFLECTION TEMPERATURE, min 232 C (ISO 75-1 and 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 0.45 MPa) 5.6 MATERIAL IDENTIFICATION FOR RECYCLING PURPOSES PET-GF30 ENGINEERING MATERIAL SPECIFICATIONWSS-M4D726-A3 Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 5 of 5
