1、 ENGINEERING MATERIAL SPECIFICATION Date Action Revisions 2006 10 20 N-STATUS Replaced by WSS-M4D952-A3 2006 02 15 Revised Inserted 3.0; Deleted 3.1, 3.2, 3.3, 3.9, 3.10 & 4 1994 07 27 Released EP00E10427997000 L. Rodigas Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC
2、Page 1 of 5 THERMOPLASTIC POLYOLEFIN ELASTOMER (TEO) WSK-M4D777-A4 HIGH COLD IMPACT MOLDING COMPOUND 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 with high cold impact resistance. The
3、material is also suitable for painting, providing that suitable surface pretreatment is used. 2. APPLICATION This specification was released originally for material used for front bumper fascias. 3. REQUIREMENTS 3.0 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and part producers
4、 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 9 - 15 g/10 minutes (ISO 1133, 230 C
5、 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 Bar, ISO 3167) B. 120 x 10 x 4.0 +/- 0.
6、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. 3.5.2 Density 0.87 - 0.93 g/cm3 (ISO 1183, Method A) 3.5.3 Hardness, Durometer D 41 - 55 (ISO 868, 15 s dwell) ENGI
7、NEERING MATERIAL SPECIFICATION WSK-M4D777-A4 Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 2 of 5 (s) 3.5.4 Tensile Strength at Yield, min 10 MPa (ISO R 527, 150 minimum x 10 x 4.0 +/- 0.2 mm specimen, 50 mm/min test speed) (s) 3.5.4.1 Elongation at Break, min 50
8、0% (Test Method according to para 3.5.3) (s) 3.5.5 Flexural Modulus, min 475 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 240 - 360 MPa (ASTM D 4065, forced constant amplitude, fixed frequency of 1 Hz +/- 15%, strain level belo
9、w 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 to +150 C temperature range, at 5 C
10、 minimum 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 No break 3.5.7.3 At 0 +/- 2 C No break The test
11、 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) 3.5.8 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 M
12、Pa 40 C 3.5.8.2 At 0.45 MPa 60 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 gel. ENGINEERING MATERIAL SPECIFICATION WSK-M4D777-A4 Printed copies are uncontrolled Copyright 2006, Ford Global T
13、echnologies, 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 properties determination) 3.5.9.1 Tensile Strength at Yield Change +/- 25% (Test Method per para 3.5.4) 3.5.9
14、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, 3 h at 100 C) Fog Number, min 80 Formation of clear film or droplets is cause for rejection. 3.7 FLAMMABILITY (ISO 3795) Burn Rate, max 100 mm/minute The sp
15、ecimen size required for material approval is 355 x 100 x 1.0 +/- 0.1 mm with a smooth surface. 3.8 PAINTABILITY (Applicable only if required) Painted substrate must comply with all requirements of paint performance specification WSK-M2P145-A etc., or equivalents. 5. GENERAL INFORMATION The informat
16、ion given below is provided for clarification and assistance in meeting the requirements of this specification. 5.1 COEFFICIENT OF LINEAR THERMAL EXPANSION 8 11-5/C (ASTM E 228 or TMA, temperature range -30 to +100 C) 5.2 MOLD SHRINKAGE (ISO 2577, approx. 150 x 100 x 3.2 +/- 0.2 mm injection molded
17、specimen) 5.2.1 Molding Shrinkage . After 48 h at 23 +/- 2 C 0.80 - 1.4% ENGINEERING MATERIAL SPECIFICATION WSK-M4D777-A4 Printed copies are uncontrolled Copyright 2006, 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.
18、0 - 0.3% . After 30 min at 120 C 0.1 - 0.50 5.3 SURFACE TENSION Optimal flame treated surfaces should show a Total Surface Tension of minimum 40 mN/m. Measurement Contact Angle Method 5.4 USE OF REGRIND MATERIAL (Property values of regrind material shall be compared with original virgin material. Re
19、grind: compound of 20 weight % regrind based on single reprocessed material, free of contaminations and 80 weight % virgin material) 5.4.1 Melt Flow Rate Change, max +30% (Test method per para 3.4.1) 5.4.2 Tensile Strength at Yield Change +/- 10% (Test method per para 3.5.4) 5.4.3 Flexural Modulus C
20、hange +/- 10% (Test method per para 3.5.5) 5.4.4 Shear Modulus at 23 C Change +/- 10% (Test method per para 3.5.6) 5.4.5 Impact Strength, Izod Change, max -10% (Test method per para 3.5.8.1) 5.4.6 Heat Deflection Temperature Change +/- 10% (Test method per para 3.5.8.1) 5.5 RECYCLING CODE PP+EPDM ENGINEERING MATERIAL SPECIFICATION WSK-M4D777-A4 Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 5 of 5
