1、 ENGINEERING MATERIAL SPECIFICATION Date Action Revisions Rev 03 2012 01 26 N Status No replacement named A. Pan, APA 2006 12 21 Revised Returned back to Active Status Per Lucia Rama 1989 11 23 Released SM/EQ6050 TP L. Rodigas Controlled document at www.MATS Copyright 2012, Ford Global Technologies,
2、 LLC Page 1 of 5 THERMOPLASTIC POLYOLEFIN ELASTOMER (TEO) WSK-M4D713-A 6% MINERAL FILLED, HIGH IMPACT PAINTABLE NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is a mineral filled, high impact, rigid thermoplastic polyolefin elastomer (TPO) injection molding compoun
3、d. This material is not UV stabilized and requires painting to achieve acceptable weatherability. 2. APPLICATION This specification was released originally for material used for bumper shells. 3. REQUIREMENTS 3.0 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and part producers mu
4、st 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 Melt Flow Rate 4 - 7 g/10 minutes (ISO 1133, 230 C, 2
5、16 kg) (s) 3.4.2 Mineral Content 4 - 8% (ISO 3451/1, Method A, talc filler, 3 h at 650 +/- 25 C, test portion 1 to 2 g) 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 follow
6、ing 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 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. ENGIN
7、EERING MATERIAL SPECIFICATION WSK-M4D713-A Copyright 2012, Ford Global Technologies, LLC Page 2 of 5 3.5.2 Density 0.92 - 0.94 g/cm3 (ISO 1183, Method A) 3.5.3 Hardness, Durometer D 47 - 55 (ISO 868, 15 s dwell) (s) 3.5.4 Tensile Strength at Yield, min 12 MPa (ISO R 527, 150 minimum x 10 x 4.0 +/- 0
8、2 mm specimen, 50 mm/min test speed) (s) 3.5.5 Flexural Modulus, min 1.0 GPa (ISO 178, 80 x 10 x 4.0 +/- 0.2 mm specimen, 2 mm/min test speed, 64 mm support span) 3.5.6 Shear Modulus at 23 C 270 - 460 MPa (ASTM D 4065, forced constant amplitude, fixed frequency of 1 Hz +/- 15%, strain level below 1
9、 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 versus Temperature curve shall be plotted for -50 to +140 C temperature range, at 5 C min
10、imum intervals. The plotted curve must be within tolerance range shown on page 5. (s) 3.5.7 Impact Strength, Izod, min (ISO 180/1A, 80 x 10 x 4.0 +/- 0.2 mm specimen, 10 specimens for each test) 3.5.7.1 At 23 +/- 2 C No break 3.5.7.2 At -40 +/- 1 C 10 kJ/m2 3.5.7.3 At -20 +/- 2 C 15 kJ/m2 The test s
11、pecimens 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) 3.5.8 Heat Deflection Temperature, min (ISO 75, 120 x 10 x 4.0 +/- 0.2 mm specimen, 0.32 +/- 0.01 mm deflection) 3.5.8.1 At 1.80 MPa
12、 45 C 3.5.8.2 At 0.45 MPa 75 C ENGINEERING MATERIAL SPECIFICATION WSK-M4D713-A Copyright 2012, 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 120 +/- 2 C. Unaged property values shall be determined at the time of the aged p
13、roperties determination) 3.5.9.1 Tensile Strength at Yield Change +/- 15% (Test Method per para 3.5.4) 3.5.9.2 Impact Strength, Izod Change No break (Test Method per para 3.5.7.1, specimens to be notched before heat aging) 3.6 FOGGING (FLTM BO 116-03, 3h at 100 C) Fog Number, min 90 Formation of a c
14、lear 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. 3.8 PAINTABILITY Painted substrate must comply with all requirements of paint perform
15、ance WSK-M2P145-A. 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 5 - 15-5/ C (ASTM E 228 or TMA, temperature range -30 to +100 C) 5.2 MOLD SHRINKAGE (ISO 2
16、577, 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 1.0 - 1.2% ENGINEERING MATERIAL SPECIFICATION WSK-M4D713-A Copyright 2012, 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 0.6% . After 30 min at 120 C 0.5% 5.3 RECYCLING CODE PP+EPDM ENGINEERING MATERIAL SPECIFICATION WSK-M4D713-A Copyright 2012, Ford Global Technologies, LLC Page 5 of 5
