1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2006 11 22 Revised Paragraph 3.8, 3.8.1 Added 3.8.3. L. Schmalz 2005 12 14 Revised Inserted 3.0; Deleted 3.1, 3.2, 3.3, 3.9, 3.10 & 4 1997 11 12 Activated M. Masserant Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, L
2、LC Page 1 of 5 POLYPROPYLENE (PP) HOMOPOLYMER, 20% TALC FILLED, WSS-M4D729-A3 INJECTION MOLDING COMPOUND, INTERIOR 1. SCOPE The material defined by this specification is a thermoplastic polypropylene homopolymer injection molding compound with 20% talc filler, UV stabilized in interior trim colors.
3、2. APPLICATION This specification was originally released for material used for interior center high mounted stop light (CHIMSL) housings. 3. REQUIREMENTS Material specification requirements are to be used for initial qualification of materials. 3.0 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Mat
4、erial 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 3
5、 11 g/10 minutes (ISO 1133, 230 C, 2.16 kg) (s) 3.4.2 Filler Content 17 - 23% (ISO 3451-1, Method A) 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
6、required: A. 150 min x 10 x 4.0 +/- 0.2 mm (ISO 3167, Type 1A) B. 60 x 60 x 2.0 +/- 0.1 mm (ISO/DIS 294-3) C. 355 x 100 x 1.0 +/- 0.1 mm (ISO 3795) Test specimen A shall be molded using molding conditions defined in ISO 1873-2. Specimens with shorter dimensions shall be cut from the center of the sp
7、ecimen A. No annealing allowed. ENGINEERING MATERIAL SPECIFICATIONWSS-M4D729-A3 Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 2 of 5 3.5.2 Density 1.03 - 1.10 g/cm3(ISO 1183, Method A) (s) 3.5.3 Tensile Strength at Yield, min 29 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 Flexural Modulus, min 2.8 GPa (ISO 178, 80 x 10 x 4.0 +/- 0.2 mm specimen use center section of specimen A, 2 mm/ minute test speed, 64 mm support span) 3.5.5 Shear Modulus at 23 C 900 - 1300 MPa (ASTM D 4065, forced constant am
9、plitude, fixed frequency of 1 Hz +/- 15%, strain level below 1%. Specimens 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). Additionally, a shear modulus versus temperature cu
10、rve shall be plotted for -50 to +140 C temperature range, at 5 C min 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 specification and shall be kept on file at the desi
11、gnated material laboratory and be available on request. (s) 3.5.6 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) 3.5.6.1 At 23 +/- 2 C 1.7 kJ/m23.5.6.2 At -40 +/- 1 C 1.7 kJ/m2The specimen must be conditioned fo
12、r min 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) 3.5.7 Heat Deflection Temperature, min 56 C (ISO 75-1 and ISO 75-2, 80 x 10 x 4.0 +/- 0.2 mm specim
13、en use center section of specimen A, flatwise, 0.34 +/- 0.1 mm deflection. At 1.80 MPa) 3.5.8 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) ENGINEERING MATERIAL SPE
14、CIFICATIONWSS-M4D729-A3 Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 3 of 5 3.5.8.1 Tensile Strength at Yield Change -10% max 3.5.8.2 Impact Strength, Izod Change -10% max (Test Method per para 3.5.6.1 specimens to be notched before heat aging) 3.6 FOGGING (SAE
15、J1756, 3 h at 100 C heating, 21 C cooling plate, post test conditioning 1 h) Fog Number, min 70 Formation of clear film, droplets or crystals is cause for rejection. 3.7 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
16、/- 0.1 mm (use specimen C) with a smooth surface. 3.8 WEATHERING RESISTANCE After exposure in accordance with para 3.8.1, 3.8.2, and 3.8.3 the material shall show no fading or color change in excess of specified Gray Scale rating (AATCC Evaluation Procedure 1/ISO 105-A02). In addition, there shall
17、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 with mild detergents and water (ratio 5:95 by volume), or equivalent, after the Florida exposure. All initial approvals will be based on the
18、 preliminary Weatherometer exposure, pending Florida exposure results for final approval-Not required for North America. 3.8.1 Xenon Arc Weatherometer Rating 4 - 5 Required Worldwide except North America (SAE J1885, 1240.8 kJ/m2exposure min, specimen size: 150 x 100 mm min, 3.2 +/-0.2 mm thick, mold
19、ed in smooth polished mold) 3.8.2 12 months Florida Rating 4 - 5 Not required for North America (FLTM BI 160-01, 5 south, under glass, specimen size: 150 x 100 mm min, 3.2 +/-0.2 mm thick, molded in smooth polished mold) ENGINEERING MATERIAL SPECIFICATIONWSS-M4D729-A3 Printed copies are uncontrolled
20、 Copyright 2006, Ford Global Technologies, LLC Page 4 of 5 3.8.3 Filtered Xenon Arc Weatherometer Rating 4 - 5 Required for North America (SAE J 1885, modified (FLTM BO 116-01), 2406.4 kJ/m2exposure min, specimen size: 150 x 100 mm min, 3.2 +/- 0.2 mm thick, molded in smooth polished mold) 5. GENERA
21、L 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 - 4.5-5/C (ASTM D 696, -30 to +30 C) 5.2 MOLD SHRINKAGE (ISO/DIS 294-3, 60 x 60 x 2.0 +/- 0.1 mm injection molded
22、specimen) 5.2.1 Molding Shrinkage After 48 h at 23 +/- 2 C 1.15% 5.2.2 Post Shrinkage (Separate specimens required for each test) After 48 h at 80 C 0.10% After 30 minutes at 120 C 0.17% 5.3 MATERIAL IDENTIFICATION FOR RECYCLING PURPOSES PP-T20 ENGINEERING MATERIAL SPECIFICATIONWSS-M4D729-A3 Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 5 of 5
