1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2006 07 19 Revised Inserted 3.0; Deleted 3.1, 3.2, 3.3, 3.9, 3.10 Fixed numbering in 3.5.7 2000 02 04 Activated M. Masserant Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 1 of 4 POLYBUTYLENE TEREPHTHALATE,
2、30% GLASS FILLED, WSS-M4D929-A3 INTERIOR 1. SCOPE The material defined by this specification is a 30% glass filled thermoplastic molding compound based on polybutylene terephthalate. 2. APPLICATION This specification was released originally for material used for molded in color register vanes. 3. RE
3、QUIREMENTS 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). 3.4 MOLDING COMPOUND (s) 3.4.1 Glass Fiber Content 28 - 32% (ISO 3451/1, Method A) (s) 3.4.2 Melt Temperat
4、ure, min 221 C (ISO 3146, Method C, 10 C/min heating rate) 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
5、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. 3.5.2 Density 1.50 - 1.60 g/cm3(ISO 1183, Method A) ENGINEERING MAT
6、ERIAL SPECIFICATIONWSS-M4D929-A3Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 2 of 4 (s) 3.5.3 Tensile Strength at Max Load, min 95 MPa (ISO R 527, 150 minimum x 10 x 4.0 +/- 0.2 mm specimen, 5 mm/min) (s) 3.5.4 Flexural Modulus, min 7.5 GPa (ISO 178, 80 x 10 x 4
7、0 +/- 0.2 mm specimen, 2 mm/min test speed, 64 mm support span) (s) 3.5.5 Impact Strength, Izod, min (ISO 180/1A, 80 x 10 x 4.0 +/- 0.2 mm specimen, 10 specimens for each test) 3.5.5.1 At 23 +/- 2 C 6.0 kJ/m23.5.5.2 At -40 +/- 1 C 4.5 kJ/m2The test specimens must be conditioned for minimum of 6 h a
8、t the above specified temperature prior to impact test. Low temperature testing shall be done within the cold box. (s) 3.5.6 Heat Deflection Temperature, min (ISO 75, 120 x 10 x 4.0 +/- 0.2 mm specimen, flatwise 0.32 +/- 0.01 mm deflection) 3.5.6.1 At 1.80 MPa 190 C 3.5.6.2 At 0.45 MPa 210 C All spe
9、cimens dry as molded. If not tested immediately after molding, specimens must be stored in a sealed, moisture-proof container filled with silica gel. 3.5.7 Heat Aging Performance (ISO 75, 120 x 10 x 4.0 +/- 50 Air changes/h, 1000 h at 140 +/- 2 C. After heat aging test specimens are to be conditione
10、d in a desiccator for 3 - 5 h at 23 +/- 2 C. Unaged property values shall be determined at the time of the aged properties determination) 3.5.7.1 Tensile Strength at max +/- 25% load percent change (Test Method per para 3.5.3) 3.5.7.2 Impact Strength, Izod +/- 25% Change (Test Method per para 3.5.6.
11、1, specimens to be notched before heat aging) ENGINEERING MATERIAL SPECIFICATIONWSS-M4D929-A3Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 3 of 4 3.6 FOGGING (SAE J1756, 3 h at 100 C heating, 21 C cooling plate, post test conditioning 1 h) Fog Number, min 70 Form
12、ation of clear film, droplets or crystals is cause for rejection. 3.7 FLAMMABILITY (ISO 3795) Burn Rate, max 100 mm/minute The specimen size required for material approval is 355 x 100 x 1.0 +/- 0.1 mm with smooth surface. 3.8 WEATHERING RESISTANCE After exposure in accordance with 3.8.1 and 3.8.2,
13、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 be no cracking, crazing or other deterioration. A slight loss of glass or chalking will be allowed provided an acceptable appearance can be
14、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 preliminary Weatherometer exposure, pending Florida exposure results for final approval. 3.8.1 Xenon Arc Weatherometer Rating 4 (SAE J1885,
15、 300.8 kJ/m2exposure 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 (FLTM BI 160-01, 5 south, under glass*, specimen size: 150 x 100 mm, minimum, 3.2 +/- 0.2 mm thick, molded in smooth polished mold) *PPG Herculite
16、 K, tempered safety glass, 3 mm thick. 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 0.12-5/C (ASTM E 831 (TMA), temperature range -30 to +30 C) ENGINEERIN
17、G MATERIAL SPECIFICATIONWSS-M4D929-A3Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 4 of 4 5.2 MOLD SHRINKAGE (ISO 2577, approx. 150 x 100 3.2 +/- 0.2 mm injection molded specimen) 5.2.1 Molding Shrinkage . After 48 h at 23 +/- 2 C 0.2% 5.2.2 Post Shrinkage (Separate specimens required for each test) . After 48 h at 80 C 0.4% . After 30 minutes at 120 C 0.4% 5.3 RECYCLING CODE
