1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2005 01 05 Revised Inserted 3.0; Deleted 3.1, 3.2, 3.3, 3.6, 3.7 & 4 1996 03 05 Activated N. Adamowicz Printed copies are uncontrolled Copyright 2005, Ford Global Technologies, LLC Page 1 of 4 EPOXY VINYL ESTER, EVE MATRIX, 32% GLASS WSS-M3D18
2、0-A1 FIBER REINFORCED SHEET MOLDING COMPOUND 1. SCOPE The material defined by this specification is 12.5 mm minimum long glass fiber reinforced epoxy vinyl ester (EVE) sheet molding compound (SMC). 2. APPLICATION This specification was released originally for material used for compression molded und
3、er the hood engine sealing covers. 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, identified by symbol
4、 (s), shall be met with date representing 3 sigma values. 3.4 MOLDED TEST SPECIMEN 3.4.1 Preparation of Test Specimens All test specimens shall be prepared from compression molded plaques. Molded on an 305 mm x 305 mm flat panel tool. The plaques are to be manufactured from the same material and und
5、er equivalent conditions as production parts. The plaques shall have the following dimensions: 305 mm x 305 mm, minimum x 3.5 mm +/- 0.25 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
6、.4.2 Density 1.70 - 1.95 g/cm3(ISO 1183, Method A) (s) 3.4.3 Filler Content 3.4.3.1 Ash Content 55 - 70% (ISO 3451/1, Method A, 1 h at 650 +/- 25 C) 3.4.3.2 Glass Fiber Content, By Weight 26 - 34% ENGINEERING MATERIAL SPECIFICATIONWSS-M3D180-A1Printed copies are uncontrolled Copyright 2005, Ford Glo
7、bal Technologies, LLC Page 2 of 4 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 c
8、alculate the percent glass fibers. 3.4.3.3 Glass Fiber Length, min 50/50 Loading (Optical evaluation method) 25 mm/12.5 mm (s) 3.4.4 Tensile Strength at Break, min 40 MPa (ISO R 527, 150 minimum x 10 x 3.5 +/- 0.25 mm specimen, 5 mm/min test speed) (s) 3.4.5 Flexural Modulus, min 8.5 GPa (ISO 178, 6
9、0 x 10 x 3.5 +/- 0.25 mm specimen, 40 mm support span, 2 mm/ minute test speed) (s) 3.4.6 Flexural Strength, min 130 MPa (ISO 178, 60 x 10 x 3.5 +/- 0.25 mm specimen, 40 mm support span, 2 mm/ minute test speed) 3.4.7 Shear Modulus at 23 C 4.7 - 1.59dyne/sq cm (ASTM D 5279, forced constant amplitude
10、, fixed frequency of 1 Hz +/- 15%, strain level below 1%. 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 p
11、lotted for -50 to +150 C temperature range, at 5 C minimum intervals. The plotted curve must be within tolerance range shown on page 6. (s) 3.4.8 Impact Strength, Izod, min (ISO 180, Method A, 63.5 x 12.7 x 3.5 +/- 0.25 mm specimen, 10 specimens minimum) 3.4.8.1 At 23 +/- 2 C 30 kJ/m23.4.8.2 At -40
12、+/- 1 C 35 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. (s) 3.4.9 Heat Deflection Temperature, min 275 C (ISO 75, 120 x 10 x 2.5 +/- 0.2 mm specimen, edgewise, 0.32 +
13、/- 0.01 mm deflection. At 1.80 MPa) (s) 3.4.10 Water Absorption, max -0.1% (ISO 62-1980, Method 4 24 h 50 x 50 x 3.5 +/- 0.25 mm specimen) ENGINEERING MATERIAL SPECIFICATIONWSS-M3D180-A1Printed copies are uncontrolled Copyright 2005, Ford Global Technologies, LLC Page 3 of 4 3.4.11 Heat Aging Perfor
14、mance (ISO 188, 150 +/- 50 air changes/h, 1000 h at 150 +/- 2 C. Unaged property values shall be determined at the time of the aged properties determination) 3.4.11.1 Tensile Strength at Max Load Change +/- 10% (Test Method per para 3.4.4) 3.4.11.2 Flexural Strength Change +/- 10% (Test Method per p
15、ara 3.4.6) 3.4.11.3 Impact Strength, Izod Change +/- 10% (Test Method per para 3.4.8.1, specimens to be notched before heat aging) 3.4.12 Tensile Creep, max. Peak Strain EVE- (GF+M) 65 ENGINEERING MATERIAL SPECIFICATIONWSS-M3D180-A1Printed copies are uncontrolled Copyright 2005, Ford Global Technologies, LLC Page 4 of 4
