1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2004 10 18 Revised Inserted 3.0; Deleted 3.1, 3.2, 3.4, 3.8, 3.9 Corrected numbering 3.5.10, 3.7.2, 5 1995 03 16 Revised Completely revised M. Myers1994 07 18 Released NB00I10043054343 M. MyersPrinted copies are uncontrolled Copyright 2004, Fo
2、rd Global Technologies, LLC Page 1 of 4 THERMOPLASTIC ELASTOMER MOLDING COMPOUND, EXTERIOR WSB-M2D477-A PVC AND NITRILE RUBBER MOLECULAR BLEND 1. SCOPE The materials defined by this specification is a flexible thermoplastic elastomeric injection and/or extrusion molding compound based on a PVC and n
3、itrile rubber molecular blend. 2. APPLICATION This specification was released originally for material used for exterior mirror gasket applications. 3. REQUIREMENTS 3.0 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and part producers must conform to the Companys Standard Requireme
4、nts 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. 3.3 DYNAMIC MECHANICAL ANALYSIS (ASTM D 4065) Ford Motor Company, at its option, may establish a shear modulus/damping vs. temper
5、ature curves plotted for -50 to +170 C temperature range for material/parts supplied to this specification. The shear modulus and damping curves established for initial approval shall constitute the reference standard and shall be kept on file at the designated material laboratory. All samples shall
6、 produce shear modulus and damping curves that correspond to the reference standard when tested under the same conditions. 3.5 MOLDED TEST SPECIMEN 3.5.1 Preparation of Test Specimens Unless otherwise specified, all test shall be conducted on specimens die cut from injection molded plaques 150 x 100
7、 x 2.0 +/- 0.2 mm. The plaques shall be molded according to ISO 294 and film gated along the upper 100 mm edge. No annealing allowed, unless specified otherwise. 3.5.2 Density 1.18 +/- .08 g/cm3(ISO 1183, Method A) 3.5.3 Hardness, International 70 +/- 5 (ISO 48) ENGINEERING MATERIAL SPECIFICATIONWSB
8、-M2D477-APrinted copies are uncontrolled Copyright 2004, Ford Global Technologies, LLC Page 2 of 4 3.5.4 Hardness, Durometer A 75 +/- 5 (ISO 868, 6 mm thick, plied-up specimen, instantaneous reading) (s) 3.5.5 Tensile Strength, min 9.0 MPa (ISO R 527, type 2, 115 x 6 x 2.0 +/- 0.2 mm specimen, 500 m
9、m/minute test speed) (s) 3.5.5.1 Elongation at Break, min 300% (Test acc. to para 3.5.5) (s) 3.5.6 Tear Strength, min (ISO 34, Method B, Procedure A) 3.5.6.1 Parallel to Flow 25 kN/m 3.5.6.2 Perpendicular to Flow 18 kN/m 3.5.7 Compression Set, max (ISO 815, large type-plied specimen) (s) 3.5.7.1 22
10、h at 70 +/- 1 C 60% (s) 3.5.7.2 70 h at 100 +/- 2 C 75% (s) 3.5.8 Brittleness Point, max -30 C (ASTM D 2137, Method A) 3.5.9 Ozone Resistance, max Rating 0 (FLTM BP 101-01, at 20% elongation) 3.5.10 Heat Aging (ISO 188, except 150 +/- 50 air changes/h, 1000 h at 80 +/- 2 C) 3.5.10.1 Hardness Change,
11、 max +/- 15 3.5.10.2 Tensile Strength Change, max +/- 50% 3.5.10.3 Elongation Change, max +/- 70% 3.5.10.4 Brittleness or Bend Test No cracks 3.6 FLAMMABILITY (ISO 3795) Burn Rate, max 100 mm/minute The specimen size required for material approval is 355 x 100 x 1.5 +/- 0.1 mm with a smooth surface.
12、 ENGINEERING MATERIAL SPECIFICATIONWSB-M2D477-APrinted copies are uncontrolled Copyright 2004, Ford Global Technologies, LLC Page 3 of 4 3.7 SPECIAL REQUIREMENTS 3.7.1 After exposure in accordance with 3.7.1.1, 3.7.1.2 and 3.7.1.3, the material shall show no color change in excess of specified Gray
13、Scale rating (AATCC Evaluation Procedure I/ISO 105-A/02). 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 th
14、e 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 for final approval. 3.7.1.1 Xenon Arc Weatherometer Rating 3-4 (SAE J1960, 2500 kJ/m2e
15、xposure minimum, specimen size: 150 x 100 mm minimum, 2.0 +/- 0.2 mm thick, molded in smooth polished mold) 3.7.1.2 12 Months Florida Rating 4 12 Months Arizona (NAAO only) (SAE J1976, 5south, direct weathering inland, specimen size: 150 x 100 mm, minimum, 3.2 +/- 0.2 mm thick, molded in smooth poli
16、shed mold) 3.7.1.3 24 Months Florida Rating 4 24 months Arizona (NAAO only) (SAE J1976, 5south direct weathering inland, specimen size: 150 x 100 mm, minimum, 3.2 +/- 0.2 mm thick, molded in smooth polished mold) 3.7.2 Immersion in Oil No. 1 (ISO 1817/ASTM D 471, 168 h at 80 +/- 2 C) 3.7.2.1 Hardnes
17、s Change, max +/- 15 3.7.2.2 Tensile Strength Change, max +/- 25% 3.7.2.3 Elongation Change, max +/- 15% 3.7.2.4 Volume Change, max +35 ENGINEERING MATERIAL SPECIFICATIONWSB-M2D477-APrinted copies are uncontrolled Copyright 2004, Ford Global Technologies, LLC Page 4 of 4 3.7.3 Paint Staining Resista
18、nce (FLTM BO 115-01) No visible stain produced on the painted panel beyond the boundaries of the test specimen. 5. GENERAL INFORMATION The information given below is provided for clarification and assistance in meeting the requirements of this specification. 5.1 MOLD SHRINKAGE (ISO 2577, approx. 150 x 100 x 2.0 +/- 0.2 mm injection molded specimen) 5.1.1 Molding Shrinkage . After 48 h at 23 +/- 2 C 2.90% 5.1.2 Post Shrinkage (Separate specimens required for each test) . After 48 h at 80 C 3.15% . After 30 minutes at 120 C 3.85% 5.2 RECYCLING CODE PVC+NBR
