1、 ENGINEERING MATERIAL SPECIFICATION Date Action Revisions 2006 10 20 N-STATUS Replaced by WSS-M4D952-A2/A3 2006 02 15 Revised Inserted 3.0; Deleted 3.1, 3.2, 3.3, 3.8, 3.9 & 4 1994 07 21 Released EP00E10426222000 L. Rodigas Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, LL
2、C Page 1 of 6 THERMOPLASTIC POLYOLEFIN ELASTOMER (TEO) WSK-M4D777-A6 COLOR PIGMENTED MOLDING COMPOUND, EXTERIOR NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is a rigid thermoplastic polyolefin elastomer (TEO) injection molding compound, color pigmented and with a
3、dded UV-stabilization for exterior use. The material is also suitable for painting, provided that suitable surface pretreatment is used. 2. APPLICATION This specification was released originally for material used for bumper shells. 3. REQUIREMENTS 3.0 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS M
4、aterial 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) 3.4.1 Melt Flow Rate
5、 7 - 15 g/10 minutes (ISO 1133, 230 C, 2.16 kg) 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 (Tensile Ba
6、r, 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 WSK-M4D777-A6 Printed copies are uncontroll
7、ed Copyright 2006, Ford Global Technologies, LLC Page 2 of 6 3.5.2 Density 0.895 - 0.93 g/cm3 (ISO 1183, Method A) 3.5.3 Hardness, Durometer D 51 - 61 (ISO 868, 15 s dwell) (s) 3.5.4 Tensile Strength at Yield, min 17 MPa (ISO R 527, 150 minimum x 10 x 4.0 +/- 0.2 mm specimen, 50 mm/min test speed) (
8、s) 3.5.4.1 Elongation at Yield, min 7% (Test Method according to para 3.5.3) (s) 3.5.5 Flexural Modulus, min 850 MPa (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 300 - 550 MPa (ASTM D 4065, forced constant amplitude, fixed frequenc
9、y 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 minutes minimum). Additionally, a Shear Modulus versus Temperature curve shall be plotted for -50
10、 to +160 C temperature range, at 5 C minimum intervals. The plotted curve must be within tolerance range shown on page 6. (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 35 kJ/m2 3.5.7.2 At -40 +/- 1 C 5 kJ/m2 3.5
11、.7.3 At 0 +/- 2 C 15 kJ/m2 The 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. ENGINEERING MATERIAL SPECIFICATION WSK-M4D777-A6 Printed copies are uncontrolled Copyright 2006, Fo
12、rd Global Technologies, LLC Page 3 of 6 (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 40 C 3.5.8.2 At 0.45 MPa 65 C 3.5.9 Heat Aging Performance (ISO 188, except 150 +/- 50 air changes/h, 1000 h at 120 +/- 2 C
13、. Unaged property values shall be determined at the time of the aged properties determination) 3.5.9.1 Tensile Strength at Yield Change +/- 25% (Test Method per para 3.5.4) 3.5.9.2 Impact Strength, Izod Change, max -15% (Test Method per para 3.5.7.1, specimens to be notched before heat aging) 3.6 WE
14、ATHERING RESISTANCE After exposure in accordance with 3.6.1, 3.6.2 and 3.6.3, the material shall show no color change in excess of specified Gray Scale rating (AATCC Evaluation Procedure 1/ISO 105-A02). In addition, there shall be no cracking, crazing or other deterioration. A slight loss of gloss o
15、r chalking will be allowed provided an acceptable appearance can be achieved by washing and/or polishing with Ford car polish (auto wax) after the outdoor exposure, at permission of the affected Product Development Materials Activity. All initial approvals will be based on the preliminary Weatherome
16、ter exposure, pending Florida and Arizona exposure results for final approval. 3.6.1 Xenon Arc Weatherometer Rating 4-5 (SAE J1960, 1980 kJ/m2 exposure minimum, specimen size: 150 x 100 mm minimum, 3.2 +/- 0.2 mm thick, molded in smooth polished mold) 3.6.2 12 months Florida Rating 4-5 12 months Ari
17、zona (NAAO only) (SAE J1976, 5 south, direct weathering inland, specimen size: 150 x 100 mm, minimum, 3.2 +/- 0.2 mm thick, molded in smooth polished mold) ENGINEERING MATERIAL SPECIFICATION WSK-M4D777-A6 Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 4 of 6 3.6.3
18、 24 months Florida Rating 3-4 24 months Arizona (NAAO only) (SAE J1976, 5 south, direct weathering inland, specimen size: 150 x 100 mm, minimum, 3.2 +/- 0.2 mm thick, molded in smooth polished mold) 3.7 PAINTABILITY (applicable only if required) Painted substrate must comply with all requirements of
19、 an appropriated paint performance specification (e.g. WSK-M2P143-A, 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 10 15-5/ C (ASTM E 831 TM
20、A, temperature range -30 to +100 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 0.8 - 1.2% 5.2.2 Post Shrinkage (Separate specimens required for each test) . After 48 h at 80 C 0.0 - 0.3% . After 30 mi
21、n at 120 C 0.1 - 0.4% 5.3 USE OF REGRIND MATERIAL (Property values of regrind material shall be compared with original virgin material) Regrind: Compound of 20 weight % regrind based on single reprocessed material, free of contaminations and 80 weight % virgin material. 5.3.1 Melt Flow Rate Change,
22、max +30% (Test method per para 3.4.1) 5.3.2 Tensile Strength at Yield Change +/- 10% (Test method per para 3.5.4) ENGINEERING MATERIAL SPECIFICATION WSK-M4D777-A6 Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 5 of 6 5.3.3 Flexural Modulus Change +/- 10% (Test met
23、hod per para 3.5.5) 5.3.4 Impact Strength, Izod Change, max -10% (Test method per para 3.5.7.1) 5.3.5 Heat Deflection Temperature Change +/- 10% (Test method per para 3.5.8.1) 5.5 RECYCLING CODE PP+EPDM ENGINEERING MATERIAL SPECIFICATION WSK-M4D777-A6 Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 6 of 6
