1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2009 08 11 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 1990 02 13 Released NB00I10056433000 D. M. Keller Printed copies are uncontrolled Copyright 2009, Ford Global Technologies
2、, LLC Page 1 of 4 THERMOPLASTIC POLYURETHANE ELASTOMER (TPU) 30% WSB-M4D738-A 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 compo
3、und. 2. APPLICATION This specification was released originally for material used for painted bodyside moldings. 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-M9
4、9P1111-A). 3.4 MOLDING COMPOUND 3.4.1 Filler Content 27.0 - 33.0% (ISO 3451/1, Method A, glass and mineral filler, 1 g of pellets, at 350 +/- 10 C) 3.5 MOLDED TEST SPECIMEN 3.5.1 Preparation of Test Specimens Unless otherwise specified all tests shall be carried out on injection molded one-end gated
5、 test specimens. The following dimensions are required: A. 150 min x 10 x 4.0 +/- 0.2 mm (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.
6、No annealing allowed. 3.5.2 Density 1.40 - 1.50 g/cm3(ISO 1183, Method A/ASTM D 792, Method A1) 3.5.3 Hardness, Durometer D 55 - 65 (ISO 868/ASTM D 2240, 15 s dwell) 3.5.4 Tensile Strength at Max Load, min 25 MPa (ISO R 527/ASTM D 638M, 150 min x 10 x 4.0 +/- 0.2 mm specimen, 5 mm/min test speed ENG
7、INEERING MATERIAL SPECIFICATIONWSB-M4D738-A Printed copies are uncontrolled Copyright 2009, Ford Global Technologies, LLC Page 2 of 4 3.5.5 Flexural Modulus, min 344 MPa (ISO 178/ASTM D 790M, Method I, Procedure A, 80 x 10 x 4.0 +/- 0.2 mm specimen, 64 mm support span) 3.5.6 Shear Modulus at 23 C 25
8、0 - 417 MPa (ASTM D 4065, forced constant amplitude, fixed frequency of 1 Hz +/- 15%, strain level below 1%. Specimen approx. 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 minimum). Additionally,
9、a Shear Modulus vs. Temperature curve shall be plotted for -50 to +170 C temperature range, at 5 C minimum intervals. The plotted curve must be within tolerance range shown on page 4. 3.5.7 Impact Strength, Izod, min (ISO 180, Method A/ASTM D 256, Method A, 63.5 x 10 x 4.0 +/- 0.2 mm specimen, 10 sp
10、ecimens for each test) 3.5.7.1 At 23 +/- 2 C 20 kJ/m23.5.7.2 At -40 +/- 2 C 8 kJ/m23.5.7.3 At 0 +/- 2 C 13 kJ/m2The test specimens 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 box, if not possibl
11、e, test can be conducted outside, but within 5 s. 3.5.8 Heat Deflection Temperature, min (ISO 75/ASTM D 648, 120 x 10 x 4.0 +/- 0.2 mm specimen) 3.5.8.1 At 1.82 MPa 55 C 3.5.8.2 At 0.45 MPa 75 C 3.5.9 Heat Aging Performance (ISO 188/ASTM D 573, 150 +/- 50 air changes/h, 1000 h at 150 +/- 2 C. Unaged
12、 property values shall be determined at the time of the aged properties determination) 3.5.9.1 Tensile Strength Change +/- 25% (Test Method per para 3.5.4) 3.5.9.2 Impact Strength, Izod Change +/- 25% (Test Method per para 3.5.7.1, specimens to be notched before heat aging) ENGINEERING MATERIAL SPEC
13、IFICATIONWSB-M4D738-A Printed copies are uncontrolled Copyright 2009, Ford Global Technologies, LLC Page 3 of 4 3.6 FLAMMABILITY (ISO 3795) Burn Rate, max 100 mm/minute The specimen size required for material approval is 355 x 100 x 0.5 +/- 0.1 mm with a smooth surface. 5. GENERAL INFORMATION The in
14、formation given below is provided for clarification and assistance in meeting the requirements of this specification. 5.1 COEFFICIENT OF LINEAR THERMAL EXPANSION 2.0-5/ C (ASTM D 696) 5.2 MOLD SHRINKAGE (ISO 2577, approx. 150 x 100 x 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 0.2% After 30 min at 120 C 0.2% ENGINEERING MATERIAL SPECIFICATIONWSB-M4D738-A Printed copies are uncontrolled Copyright 2009, Ford Global Technologies, LLC Page 4 of 4
