1、 ENGINEERING MATERIAL SPECIFICATION Date Action Revisions 2006 11 10 N-STATUS Replaced by WSS-M4D492-B1 or WSS-M4D952-A2 2006 07 27 Revised Inserted 3.0; Deleted 3.1, 3.2, 3.3, 3.9, 3.10 & 4 1998 09 02 Activated T. Honey Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC P
2、age 1 of 5 THERMOPLASTIC POLYOLEFIN ELASTOMER (TEO), WSS-M4D961-A2 COLOR PIGMENTED, UV STABILIZED, HIGH MELT FLOW, FOR MOLDED-IN-COLOR AND PARTIALLY PAINTED APPLICATIONS, EXTERIOR NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is a filled, weatherable and paintable
3、 thermoplastic injection molding compound. 2. APPLICATION This specification was released originally for material used for exterior bumper applications. 3. REQUIREMENTS 3.0 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and part producers must conform to the Companys Standard Requ
4、irements 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 17-24 g/ (ISO 1133, 230 C, 2.16 kg) 10 minutes (s) 3.4.2 Filler Content 5-11%
5、(ISO 3451-1, Method A, talc filler, 3 h at 565 C +/- 25 C, test portion 4 - 5 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 following dimensions are required: A. 150 min
6、x 10 x 4.0 +/- 0.2 mm (Tensile Bar, ISO 3167) B. 150 x 100 x 4.0 +/- 0.2 mm (ISO/DIS 294-3) Test specimen A shall be molded using molding conditions defined in ISO 294. Specimens with shorter dimensions shall be cut from the center of the specimen A. No annealing allowed. ENGINEERING MATERIAL SPECIF
7、ICATION WSS-M4D961-A2 Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 2 of 5 3.5.2 Density 0.92 - 0.98 (ISO 1183, Method A) g/cm3 3.5.3 Hardness, Durometer D 58 - 71 (ISO 868, 15 s dwell) (s) 3.5.4 Tensile Strength at Yield, min 19 MPa (ISO 527-1 and ISO 527-2, 150
8、 min x 10 x 4.0 +/- 0.2 mm specimen, test speed: 50 mm/minute) (s) 3.5.4.1 Elongation at Yield, min 5% (Test Method according to para 3.5.4) (s) 3.5.5 Flexural Modulus, min 990 MPa (ISO 178, 80 x 10 x 4.0 +/- 0.2 mm specimen, 2 mm/minute test speed, 64 mm support span) 3.5.6 Shear Modulus at 23 C 44
9、0 - 720 MPa (ASTM D 4065, 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 min) Additiona
10、lly, a shear modulus vs. temperature curve shall be plotted for -50 C to +150 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 specif
11、ication and shall be kept on file at the designated material laboratory and be available on request. (s) 3.5.7 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) 3.5.7.1 At 23 C +/- 2 C No break 3.5.7.2 At -40 C +/-
12、 1 C 1.2 kJ/m2 3.5.7.3 At 0 C +/- 2 C 2.8 kJ/m2 The test specimen 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 chamber, if not possible, test may be conducted outside, but within 5 s. (s) 3.5.8 H
13、eat Deflection Temperature, min 43 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 1.80 MPa) ENGINEERING MATERIAL SPECIFICATION WSS-M4D961-A2 Printed copies are uncontrolled Copyright 2006, Ford Global Technologie
14、s, LLC Page 3 of 5 3.5.9 Heat Aging Performance (ISO 188, except 150 +/- 50 air changes/ h, 1000 h at 120 C +/- 2 C. Unaged property values shall be determined at the time of the aged properties determination) 3.5.9.1 Tensile Strength at Yield +/- 10% Change (Test Method per para 3.5.4) 3.5.9.2 Impa
15、ct Strength, Izod Change +/- 15% (Test Method per para 3.5.7.1, specimens to be notched before heat aging) 3.6 FLAMMABILITY (ISO 3795/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 with a smooth surface. 3.7 PAINTABILITY Painted
16、substrate must comply with all requirements of paint performance WSS-M2P181-A. Production level, heat resistant tapes must be used when preparing test panels. The use of improper sample prep materials can influence test results. 3.8 WEATHERING RESISTANCE After exposure in accordance with para 3.8.1,
17、 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 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 appearanc
18、e 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 Weatherometer exposure, pending Florida and Arizona exposure results
19、for final approval. 3.8.1 Xenon Arc Weatherometer Rating 4 - 5 (SAE J1960, 2500 kJ/m2 exposure min, specimen size: 150 x 100 mm min, 3.2 +/- 0.2 mm thick, molded in smooth polished mold) 3.8.2 12 months Florida Rating 4 - 5 12 months Arizona (SAE J1976, 5 south, direct weathering inland, specimen si
20、ze: 150 x 100 mm, min, 3.2 +/- 0.2 mm thick, molded in smooth polished mold) ENGINEERING MATERIAL SPECIFICATION WSS-M4D961-A2 Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 4 of 5 3.8.3 24 months Florida Rating 4 - 5 24 months Arizona (SAE J1976, 5 south, direct w
21、eathering inland, specimen size: 150 x 100 mm, min, 3.2 +/- 0.2 mm thick, molded in smooth polished mold) 3.9.1 Regrind 20% maximum of regrind produced from molded parts is acceptable for molded-in-color applications and 40% maximum for full paint, providing all requirements of this specification an
22、d WSS-M2P181-A are met. 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 4.2 - 11.0 mm/ (ASTM D 831 or TMA, temperature range -30 C mm/C to 30 C) 5.2 MOLD SHR
23、INKAGE (ISO 2577, approximately 150 x 100 x 3.2 mm +/- 0.2 mm injection molded specimen) 5.2.1 Molding Shrinkage . After 48 h at 23 C +/- 2 C 0.7 - 1.2% 5.2.2 Post Shrinkage (Separate specimens required for each test) . After 48 h at 80 C +/- 2 C 0.9 - 1.4% . After 30 minutes at 120 C +/- 2 C 0.8 -
24、1.2% 5.3 HEAT DEFLECTION TEMPERATURE 66 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) 5.4 RECYCLING CODE PP+EPDM ENGINEERING MATERIAL SPECIFICATION WSS-M4D961-A2 Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 5 of 5
