1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2009 08 12 N-STATUS No Replacement Named A. Pan, AP 2006 01 11 Revised Inserted 3.0; Deleted 3.1, 3.2, 3.3, 3.7, 3.8 & 4 1996 05 30 Activated K.D. Bruley G.A. Molner Printed copies are uncontrolled Copyright 2009, Ford Global Technologies, LLC
2、 Page 1 of 3 THERMOPLASTIC POLYURETHANE ELASTOMER (TPU) WSS-M4D738-A2 30% MINERAL/GLASS FIBER REINFORCED MOLDING COMPOUND NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is a mineral/glass fiber reinforced thermoplastic polyurethane (TPU) injection molding compound.
3、 2. APPLICATION This specification was released originally for material used for painted bodyside molding. 3. REQUIREMENTS 3.0 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and part producers must conform to the Companys Standard Requirements For Production Materials (WSS-M99P111
4、1-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) 3.4.2 Filler Content 27.0 - 31.0% (ISO 3451-1, Method A, glass and mineral filler, 1 g of pellets, at 350 +/- 10 C) 3.5 MOLDED TEST SPECIMEN 3.5.
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 minimum x 10 x 4.0 +/- 0.2 mm (ISO 3167, Type 1A) B. 120 x 10 x 4.0 +/- 0.2 mm C. 355 x 100 x 1.0 +/- 0.1 mm (ISO
6、3795) 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 1.40 - 1.50 g/cm3(ISO 1183, Method A) ENGINEERING MATERIAL SPECIFICATIONWSS-M4D738-A2 Printed copies
7、 are uncontrolled Copyright 2009, Ford Global Technologies, LLC Page 2 of 3 3.5.3 Hardness, Durometer D 50 - 65 (ISO 868, 15 s dwell) (s) 3.5.4 Tensile Strength at Max Load, min 20 MPa (ISO 527-1 and ISO 527-2, 150 minimum x 10 x 4.0 +/- 0.2 mm specimen, test speed: 5 mm/minute) (s) 3.5.5 Flexural M
8、odulus, min 415 MPa (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) 3.5.6 Shear Modulus at 23 C 90 - 155 MPa (ASTM D 5279, forced constant amplitude, fixed frequency of 1 Hz +/- 15%, strain level below 1%. Specimen approx. 60
9、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). Additionally, a shear modulus versus temperature curve shall be plotted for -50 to +150 C temperature range, at 5 C minimum intervals. The
10、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 designated material laboratory and be available on request. (s) 3.5.7 Impact Strength, I
11、zod, 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 +/- 2 C 40 kJ/m23.5.7.2 At -40 +/- 1 C 3 kJ/m23.5.7.3 At 0 +/- 2 C 30 kJ/m2The test specimen must be conditioned for minimum of 6 hours at the above specified temperatu
12、re 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 seconds. (s) 3.5.8 Heat Deflection Temperature, min 35 C (ISO 75-1 and ISO 75-2, 80 x 10 x 4.0 +/- 0.2 mm specimen use center section of specimen A, fl
13、atwise, 0.34 x 0.1 mm deflection. At 1.80 MPa) ENGINEERING MATERIAL SPECIFICATIONWSS-M4D738-A2 Printed copies are uncontrolled Copyright 2009, Ford Global Technologies, LLC Page 3 of 3 3.5.9 Heat Aging Performance (ISO 188, except 150 +/- 50 air changes/h, 1000 h at 150 +/- 2 C. Unaged property valu
14、es shall be determined at the time of the aged properties determination) 3.5.9.1 Tensile Strength at Max Load +/- 25% Change 3.5.9.2 Impact Strength, Izod Change +/- 25% (Test Method per para 3.5.6.1, specimens to be notched before heat aging) 3.6 FLAMMABILITY (ISO 3795/SAE J369) Burn Rate, max 100
15、mm/minute The specimen size required for material approval is 355 x 100 x 1.0 +/- 0.1 mm (use specimen C) with a smooth surface. 5. GENERAL INFORMATION The information given below is provided for clarification and assistance in meeting the requirements of this specification. 5.1 COEFFICIENT OF LINEA
16、R THERMAL EXPANSION 3-5/ C (ASTM D 696, temperature range -30 to 30 C) 5.2 MOLD SHRINKAGE (ISO 2577, 150 x 100 302 +/- 0.1 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 0.2% . After 30 minutes at 120 C 0.2% 5.3 HEAT DEFLECTION TEMPERATURE 50 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 MATERIAL IDENTIFICATION FOR RECYCLING PURPOSES TPUR-(GF+M)30
