1、 ENGINEERING MATERIAL SPECIFICATION Date Action Revisions 2006 10 20 N-STATUS WSK-M4D777-A1 made N-STATUS; Replaced by WSS-M4D952-A2 2006 01 31 Revised Inserted 3.0; Deleted 3.1, 3.2, 3.3, 3.10, 3.11 & 4 1991 05 02 Released EP00E01089484000 L. Rodigas Printed copies are uncontrolled Copyright 2006,
2、Ford Global Technologies, LLC Page 1 of 6 THERMOPLASTIC POLYOLEFIN ELASTOMER (TPO) NOT TO BE USED FOR NEW DESIGN WSK-M4D777-A1 HIGH IMPACT, GENERAL PURPOSE THERMOPLASTIC POLYOLEFIN ELASTOMER (TPO) WSK-M4D777-A2 HIGH IMPACT, COLOR PIGMENTED, EXTERIOR 1. SCOPE The materials defined by these specificat
3、ions are rigid thermoplastic polyolefin elastomer (TPO) injection molding compounds with high impact. WSK-M4D777-A2 material is color pigmented and has added UV stabilization for exterior use. This material is also suitable for painting provided that qualified surface pretreatments (e.g. flaming) ar
4、e used. 2. APPLICATION These specifications were released originally for materials used for general purpose use such as covers and bezels (WSK-M4D777-A1) and for exterior parts, pigmented and/or painted, which are exposed to sunlight such as bumper shells, body side moldings etc. (WSK-M4D777-A2). 3.
5、 REQUIREMENTS 3.0 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material 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 represent
6、ing 3 sigma values. 3.4 MOLDING COMPOUND (s) 3.4.1 Melt Flow Rate 1.5 - 5.0 g/10 minutes (ISO 1133, 230 C, 2.16 kg) 3.5 MOLDED TEST SPECIMEN (A1 & A2) 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 f
7、ollowing 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.
8、ENGINEERING MATERIAL SPECIFICATION WSK-M4D777-A1/A2 Printed copies are uncontrolled 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 53 - 63 (ISO 868, 15 s dwell) (s) 3.5.4 Tensile Strength at Yield, min 17 MP
9、a (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 Yield, min 10% (Test Method according to para 3.5.4) (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 Mod
10、ulus at 23 C 300 - 450 MPa (ASTM D 4065, forced constant amplitude, fixed frequency 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
11、). Additionally, a Shear Modulus versus Temperature curve shall be plotted for -50 to +150 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 specimen
12、s for each test) 3.5.7.1 At 23 +/- 2 C 43 kJ/m2 3.5.7.2 At -40 +/- 1 C 3.5 kJ/m2 3.5.7.3 At 0 +/- 2 C 25 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 MAT
13、ERIAL SPECIFICATION WSK-M4D777-A1/A2 Printed copies are uncontrolled Copyright 2006, Ford 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 45 C 3.5.8.2 At 0.45 MPa 70 C 3.5.9
14、Heat Aging Performance (ISO 188, except 150 +/- 50 air changes/h, 1000 h at 130 +/- 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) 3.5.9.2 Impact Strength, Izod Change, ma
15、x -15% (Test Method per para 3.5.7.1, specimens to be notched before heat aging) 3.6 FOGGING (FLTM BO 116-03) Fog Number, min 80 Formation of a clear film, droplets or crystals is cause for rejection. 3.7 FLAMMABILITY (WSK-M4D777-A1 only) (ISO 3795) Burn Rate, max 100 mm/minute The specimen size req
16、uired for material approval is 355 x 100 x 1.0 +/- 0.1 mm with a smooth surface. 3.8 WEATHERING RESISTANCE (WSK-M4D777-A2 only) After exposure in accordance with 3.8.1, 3.8.2 and 3.8.3, the material shall show no color change in excess of specified Gray Scale rating (AATCC Evaluation Procedure 1/ISO
17、I 105-A02). In addition, there shall be no cracking, crazing or other deterioration. A slight loss of gloss or 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 affec
18、ted Product Development Materials Activity. All initial approvals will be based on the preliminary Weatherometer exposure, pending Florida and Arizona exposure results for final approval. ENGINEERING MATERIAL SPECIFICATION WSK-M4D777-A1/A2 Printed copies are uncontrolled Copyright 2006, Ford Global
19、Technologies, LLC Page 4 of 6 3.8.1 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) 3.8.2 12 months Florida Rating 4-5 12 months Arizona (NAAO only) (SAE J1976, 5 south, direct weat
20、hering inland, specimen size: 150 x 100 mm, minimum, 3.2 +/- 0.2 mm thick, molded in smooth polished mold) 3.8.3 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 poli
21、shed mold) 3.9 PAINTABILITY (painted applications only) Painted substrates must comply with all requirements of an appropriate paint performance specification (e.g. WSK-M2P143-A, WSK-M2P145-A etc.). 5. GENERAL INFORMATION The information given below is provided for clarification and assistance in me
22、eting the requirements of these specifications. 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 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
23、 - 1.4% 5.2.2 Post Shrinkage (Separate specimens required for each test) . After 48 h at 80 C 0.0 - 0.3% . After 30 min at 120 C 0.1 - 0.5% ENGINEERING MATERIAL SPECIFICATION WSK-M4D777-A1/A2 Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 5 of 6 5.3 SURFACE TENSIO
24、N 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. Regrind: compound of 20 weight % regrind based on single reproce
25、ssed 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 Change +/- 10% (Test method per para 3.5.5) 5.4.4 Impact Streng
26、th, Izod Change, max -10% (Test method per para 3.5.7.1) 5.4.5 Heat Deflection Temperature Change +/- 10% (Test method per para 3.5.8.1) 5.4.6 Xenon Arc Weatherometer Rating 4-5 (Test method per para 3.8.1) 5.4.7 12 Months Florida Rating 4-5 (Test Method per para 3.8.2) 5.5 RECYCLING CODE PP+EPDM ENGINEERING MATERIAL SPECIFICATION WSK-M4D777-A1/A2 Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 6 of 6
