1、 ENGINEERING MATERIAL SPECIFICATION Date Action Revisions Rev. 0 2011 08 08 Activated K. Mueller, NA Controlled document at www.MATS Copyright 2011, Ford Global Technologies, LLC Page 1 of 5 UNSATURATED POLYESTER (UP), LOW DENSITY, NON-CLASS A, WSS-M3D188-A 40% GLASS FIBER REINFORCED, SHEET MOLDING
2、COMPOUND 1. SCOPE The material defined by this specification is 25 mm long glass fiber/bubble reinforced filled unsaturated polyester (UP) sheet molding compound. 2. APPLICATION This specification was released originally for material used for non class A body components such as hood or deck-lid inne
3、rs to reduce weight. 3. REQUIREMENTS 3.1 QUALITY SYSTEM REQUIREMENTS Material suppliers and part producers must conform to the Companys Standard Requirements for Production Materials (WSS-M99P1111-A). 3.1.1 Performance Criteria: Parts using this specification shall meet the appropriate performance s
4、pecifications: Paint Performance: WSS-M2P180-C / Latest Adhesive Performance: ESB-M11P27-A / Latest 3.2 MOLDED TEST SPECIMEN 3.2.1 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
5、 and under equivalent conditions as production parts. The plaques shall have the following dimensions: 300 x 300 mm, min x 2.5 +/- 0.2 mm Prepared specimens must show no evidence of fiber tear or loose strands protruding from the specimens. No additional annealing of specimens is allowed. 3.2.2 Dens
6、ity 1.0 1.4 g/cm3 (ISO 1183, Method A) 3.2.3 Filler Content 3.2.3.1 Ash Content, by weight 52 - 61% (ISO 3451/1, Method A, 1 h at 650 +/- 25 C) 3.2.3.2 Glass Fiber Content, 33 45% by Weight ENGINEERING MATERIAL SPECIFICATION WSS-M3D188-A Copyright 2011, Ford Global Technologies, LLC Page 2 of 5 Test
7、 Method: ISO 3451/1, Method B, 1 h at 650 +/- 25 C, except after bake oven boil in 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 perce
8、nt glass fibers. 3.2.3.3 Glass Fiber Length 25 mm min (Optical evaluation method) 3.2.4 Tensile Strength at Break 42 MPa min (ISO R 527, 150 min x 10 x 2.5 +/- 0.2 mm specimen, 5 mm/min test speed) 3.2.5 Tensile Modulus at Break 6.8 GPa min (ISO R 527, 150 min x 10 x 2.5 +/-0.2 mm specimen, 5 mm/min
9、 test speed) 3.2.6 Tensile Elongation 0.8% min (ISO R 527, 150 min x 10 x 2.5 +/- 0.2 mm specimen, 5 mm/min test speed) 3.2.7 Flexural Modulus 5.2 Gpa min (ISO 178, 60 x 10 x 2.5 +/- 0.2 mm specimen, 40 mm support span, 2 mm/ minute test speed) 3.2.8 Flexural Strength 115 MPa min (ISO 178, 60 x 10 x
10、 2.5 +/- 0.2 mm specimen, 40 mm support span, 2 mm/ minute test speed) 3.2.9 Impact Strength, Izod, notched (ISO 180, Method A, 63.5 x 12.7 x 2.5 +/- 0.2 mm specimen use center section of specimen, 10 specimens for each test) 3.2.9.1 At 23 C +/- 2 C 43 kJ/m2, min 3.2.9.2 At - 40 C +/- 1 C 62 kJ/m2,
11、min The test specimen 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 chamber, if not possible, test may be conducted outside, but within 5 s. ENGINEERING MATERIAL SPECIFICATION WSS-M3D188-A Copyrig
12、ht 2011, Ford Global Technologies, LLC Page 3 of 5 3.2.10 Heat Deflection Temperature 230 C (ISO 75, 120 x 10 x 2.5 +/- 0.2 mm specimen use center section of specimen. At 1.82 MPa) 3.2.11 Water Absorption 1.3% max no blisters Test Method: Include all processing steps, such as in-mold-coating, conduc
13、tive primer, bakes, etc. that normally occurs just prior to shipping parts to the Ford Assembly Plant. Panel size shall be approximately 30 x 30 cm. Testing shall be performed in triplicate. Dry panels for a minimum 2 Hours at 75 +/- 2 C. Allow panels to cool for 1 hour at 23 +/- 2 C and 50 +/- 5 %
14、relative humidity. Weigh panels to the nearest 0.1 g (Wi). Condition panels for 10 days at 95 100 % relative humidity and 38 +/-1 C. Blot away any excess water on the surfaces of the samples until no visually perceptible surface water remains. Allow panels to dry for 1 hour at 23 +/- 2 C and 50 +/-
15、5% relative humidity and re-weigh panels (Wf). Water absorption by weight (%) = (Wf - Wi) / Wi x 100 Temperature-shock panels for 32 minutes: o Oven start temperature = 25 C o Place panels in IR oven, with both sides of panels exposed and thermocoupled. Figure 1. Krelus Krelus AG medium wave (2.6 -
16、9.6 m), fast response (On 8s/Off 2s) oven. Oven consists of 12 x 2 kilowatt emitter banks (6 top, 6 bottom). ENGINEERING MATERIAL SPECIFICATION WSS-M3D188-A Copyright 2011, Ford Global Technologies, LLC Page 4 of 5 o Record temperatures of panels o Bake oven ramp rate: o Max oven temp = 205C o Revie
17、w panels for blisters 3.2.12 Heat Aging Performance (ISO 188, except 150 +/- 50 air changes/h, 1000 h at 160 +/- 2 C. Unaged property values shall be determined at the time of the aged properties determination) 3.2.12.1 Tensile Strength at Break Change +/- 25% (Test Method per para 3.2.4) 3.2.12.2 F
18、lexural Strength Change +/- 25% (Test Method per para 3.2.8) 3.2.12.3 Impact Strength, Izod Change +/- 25% (Test Method per para 3.2.9.1, specimens to be notched before heat aging) ENGINEERING MATERIAL SPECIFICATION WSS-M3D188-A Copyright 2011, Ford Global Technologies, LLC Page 5 of 5 3.3 FLAMMABIL
19、ITY (ISO 3795) Burn Rate 100 mm/minute max The specimen size required for material approval is 355 x 100 x 2.5 +/- 0.2 mm with a smooth surface. 4. GENERAL INFORMATION The information given below is provided for clarification and assistance in meeting the requirements of this specification. 4.1 COEF
20、FICIENT OF LINEAR THERMAL EXPANSION 14 - 23 E-6/ C (ASTM D 696, -30 C to 30 C) 4.2 MOLD SHRINKAGE (ISO 2577, approximately 300 x 300 x 2.5 mm +/- 0.2 mm compression molded specimen) 4.2.1 Molding Shrinkage . After 48 h at 23 C +/- 2 C 0.02 to 0.08% growth . After 48 h at 120 C +/- 2 C, 23 48 hr at 23 C +/- 2 C 0.001 to 0.06% growth 4.3 WATER ABSORPTION 1.3% (ISO 62, 10 day exposure, 300 x 300 x 2.5 +/- 0.2 mm specimen) 4.4 POISSONS RATIO 0.32 (Test Method-ISO 527-1 & ISO 527-2, 150 minimum x 10 x 4.0 mm specimen (specimen A), test speed 1 mm/minute) 4.5 RECYCLING CODE UP - (GF+M)60
