1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2004 12 21 Revised Inserted 3.0; Deleted 3.1, 3.2, 3.3, 3.6, 3.7 & 4 1994 07 15 Released NB00I10043054370 T.A. Honey Printed copies are uncontrolled Copyright 2004, Ford Global Technologies, LLC Page 1 of 4 UNSATURATED POLYESTER (UP), 60% GLAS
2、S FIBER WSB-M3D174-A REINFORCED SHEET MOLDING COMPOUND 1. SCOPE The material defined by this specification is 23 mm minimum long glass fiber reinforced unsaturated polyester (UP) sheet molding compound. 2. APPLICATION This specification was released originally for material used for structural 60% gl
3、ass reinforced, dimensionably stable inner panels. 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-M99P1111-A). 3.1.1 All requirements of this specification, iden
4、tified by symbol (s), shall be met with data representing 3 sigma values. 3.4 MOLDED TEST SPECIMEN 3.4.1 Preparation of Test Specimens All test specimens shall be prepared from cross-ply molded plaques or equivalent. The plaques are to be manufactured from the same material and under equivalent cond
5、itions as production parts. The plaques shall have the following dimensions. 300 x 300 mm, minimum x 2.5 +/- 0.2 mm Prepared specimens must show no evidence of fiber tear or loose fiber strands protruding from the specimens. No additional annealing of specimens is allowed. 3.4.2 Density 1.79 - 1.85
6、g/cm3(ISO 1183, Method A) (s) 3.4.3 Filler Content 3.4.3.1 Ash Content 68 - 73% (ISO 3451/1, Method A, 1 h at 650 +/- 25 C) ENGINEERING MATERIAL SPECIFICATIONWSB-M3D174-APrinted copies are uncontrolled Copyright 2004, Ford Global Technologies, LLC Page 2 of 4 3.4.3.2 Glass Fiber Content, by Weight 5
7、6 - 63% Test Method: ISO 3451/1, Method B, 1 h at 650 +/- 25 C, except use 5% by volume hydrochloric acid solution for 15 min. Rinse the glass fibers several times with distilled water before drying in an oven for 2 h at 120 +/- 2 C. After cooling, weigh the crucibles and calculate the percent glass
8、 fibers. 3.4.3.3 Glass Fiber Length, min 23 mm (Optical evaluation method) (s) 3.4.4 Tensile Strength at Break, min 135 MPa (ISO R 527, 150 minimum x 10 x 2.5 +/- 0.2 mm specimen, 5 mm/min test speed) (s) 3.4.5 Flexural Modulus, min 12.7 GPa (ISO 178, 60 x 10 x 2.5 +/- 0.2 mm specimen, 40 mm support
9、 span, 2 mm/minute test speed) (s) 3.4.6 Flexural Strength, min 269 MPa (ISO 178, 60 x 10 x 2.5 +/- 0.2 mm specimen, 40 mm support span, 2 mm/minute test speed) 3.4.7 Shear Modulus at 23 C 3120 - 5200 MPa (ASTM D 4065, forced constant amplitude, fixed frequency of 1 Hz +/- 15%, strain level below 1%
10、. Specimen approx. 60 x 10 x 2.5 +/- 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 vs. Temperature curve shall be plotted for -50 to +280 C temperature range, at 5 C minimum
11、 intervals. The plotted curve must be within tolerance range shown on page 4. (s) 3.4.8 Impact Strength, Izod, min (ISO 180, Method A, 63.5 x 12.7 x 2.5 +/- 0.2 mm specimen, 10 specimens minimum) 3.4.8.1 At 23 +/- 2 C 118 kJ/m23.4.8.2 At -40 +/- 2 C 152 kJ/m2The test specimens must be conditioned fo
12、r minimum of 6 h at the above specified temperature prior to impact test. Low temperature testing shall be done within the cold box. (s) 3.4.9 Heat Deflection Temperature, min 250 C (ISO 75, 120 x 10 x 2.5 +/- 0.2 mm specimen, 0.32 +/- 0.01 mm deflection. At 1.80 MPa) ENGINEERING MATERIAL SPECIFICAT
13、IONWSB-M3D174-APrinted copies are uncontrolled Copyright 2004, Ford Global Technologies, LLC Page 3 of 4 (s) 3.4.10 Water Absorption, max 0.4% (ISO 62, 24 h, 50 x 50 x 2.5 +/- 0.2 mm specimen) 3.4.11 Heat Aging Performance (ISO 188, except 150 +/- 50 air changes/h, 1000 h at 160 +/- 2 C. Unaged prop
14、erty values shall be determined at the time of the aged properties determination) 3.4.11.1 Tensile Strength at Max Load Change +/- 25% (Test Method per para 3.4.4) 3.4.11.2 Flexural Strength Change +/- 25% (Test Method per para 3.4.6) 3.4.11.3 Impact Strength, Izod Change +/- 25% (Test Method per pa
15、ra 3.4.8.1, specimens to be notched before heat aging) 3.5 FLAMMABILITY (ISO 3795) Burn Rate, max 100 mm/minute The specimen size required for material approval is 355 x 100 x 2.5 +/- 0.1 mm with a smooth surface. 5. GENERAL INFORMATION The information given below is provided for clarification and a
16、ssistance in meeting the requirements of this specification. 5.1 COEFFICIENT OF LINEAR THERMAL EXPANSION 1.38-5/ C (ASTM D 696) 5.2 MOLD SHRINKAGE (ISO 2577, approx. 300 x 300 x 2.5 +/- 0.2 mm compression molded specimen) 5.2.1 Molding Shrinkage . After 48 h at 23 +/- 2 C 0.06% 5.2.2 Post Shrinkage . After 48 h at 120 C 0.05% 5.3 RECYCLING CODE UP- (GF+M) 70 ENGINEERING MATERIAL SPECIFICATIONWSB-M3D174-APrinted copies are uncontrolled Copyright 2004, Ford Global Technologies, LLC Page 4 of 4
