1、 ENGINEERING MATERIAL SPECIFICATION Date Action Revisions Rev. 1 2016 05 24 N Status Replaced by WSS-M3D188-B1 K. Mueller, NA 2011 08 08 Activated K. Mueller, NA Controlled document at www.MATS Copyright 2016, Ford Global Technologies, LLC Page 1 of 5 UNSATURATED POLYESTER (UP), LOW DENSITY, NON-CLA
2、SS A, WSS-M3D188-A 40% GLASS FIBER REINFORCED, SHEET MOLDING COMPOUND NOT TO BE USED FOR NEW DESIGN 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
3、 originally for material used for non class A body components such as hood or deck-lid inners 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 Pe
4、rformance Criteria: Parts using this specification shall meet the appropriate performance specifications: 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-
5、ply molded plaques or equivalent. The plaques are to be manufactured from the same material 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
6、 protruding from the specimens. No additional annealing of specimens is allowed. 3.2.2 Density 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 MATERIA
7、L SPECIFICATION WSS-M3D188-A Copyright 2016, Ford Global Technologies, LLC Page 2 of 5 Test 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
8、 an oven for 2 h at 120 +/- 2 C. After cooling, weigh the crucibles and calculate the percent 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 Tensi
9、le Modulus at Break 6.8 GPa min (ISO R 527, 150 min x 10 x 2.5 +/-0.2 mm specimen, 5 mm/min 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 sup
10、port span, 2 mm/ minute test speed) 3.2.8 Flexural Strength 115 MPa min (ISO 178, 60 x 10 x 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 specimen
11、s 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, 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
12、 conducted outside, but within 5 s. ENGINEERING MATERIAL SPECIFICATION WSS-M3D188-A Copyright 2016, 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%
13、 max no blisters Test Method: Include all processing steps, such as in-mold-coating, conductive 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 m
14、inimum 2 Hours at 75 +/- 2 C. Allow panels to cool for 1 hour at 23 +/- 2 C and 50 +/- 5 % 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
15、perceptible surface water remains. Allow panels to dry for 1 hour at 23 +/- 2 C and 50 +/- 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 bot
16、h sides of panels exposed and thermocoupled. Figure 1. Krelus Krelus AG medium wave (2.6 - 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 2016, Ford Global Technologies, LLC Page 4
17、 of 5 o Record temperatures of panels o Bake oven ramp rate: o Max oven temp = 205C o Review 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
18、) 3.2.12.1 Tensile Strength at Break Change +/- 25% (Test Method per para 3.2.4) 3.2.12.2 Flexural 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 SPECIFI
19、CATION WSS-M3D188-A Copyright 2016, Ford Global Technologies, LLC Page 5 of 5 3.3 FLAMMABILITY (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 f
20、or clarification and assistance in meeting the requirements of this specification. 4.1 COEFFICIENT 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 . A
21、fter 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
