1、 ENGINEERING MATERIAL SPECIFICATION Date Action Revisions Rev. 0 2016 03 30 Released K. Mueller, NA Controlled document at www.MATS Copyright 2016, Ford Global Technologies, LLC Page 1 of 7 UNSATURATED POLYESTER (UP), LOW DENSITY, CLASS A, WSS-M3D188-B1 40% GLASS FIBER REINFORCED, SHEET MOLDING COMP
2、OUND 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 painted class A body components such as hoods or deck-lids to
3、 reduce weight. 2.1 Material is unlikely to contain UV stabilizers, therefore long term exposure to direct sunlight if left unpainted could cause chalking and loss of gloss. 3. REQUIREMENTS 3.1 APPROVED SOURCES This specification requires the use of approved sources. Only the sources identified on t
4、he Ford Approved Source List (ASL) can be used when this specification is listed on the drawing, CAD file, or other documents. The list of approved sources is located within Ford at or available externally through a Ford Materials Engineer. 3.1.1 This specification is based on virgin material and d
5、oes not allow the addition of recycled content (PIR/PCR). 3.1.2 Materials requiring high strain rate, creep or fiber oriented tensile modulus may be required to test to the requirements of WSS-M99D68-A1/Latest, Thermoplastic Property Determination For CAE, High Strain Rate Tensile, Creep and Tensile
6、 Modulus. Material suppliers should be prepared to submit data upon request. 3.1.3 Performance Criteria: Parts using this specification shall meet the appropriate performance specifications: Paint Performance: WSS-M2P180-D / Latest Adhesive Performance: ESB-M11P27-A / Latest or WSB-M11P27-B / Latest
7、 SMC Closure Adhesive Bonding: ESDA53-1B322-AA SMC Closure Adhesive Bonding using Plasma Surface Preparation: ES-EU5A-1B327-AA Parts must fulfill applicable SDS/CDS requirements. 3.1.4 Unless otherwise agreed to by Ford Materials Engineering, Control Plan and Certificate of Analysis (CoA) lot testin
8、g requirements must include, but are not limited to: Density Glass Fiber % Tensile Modulus Tensile Strength 3.1.5 Refer to Table 1 for the number of samples required for each test. ENGINEERING MATERIAL SPECIFICATION WSS-M3D188-B1 Copyright 2016, Ford Global Technologies, LLC Page 2 of 7 3.1.6 Condit
9、ioning and test conditions All test values are based on material conditioned for not less than 24 h prior to testing in a controlled environment of 23 +/- 2 C and 50 +/- 5% relative humidity. Testing of the material should occur in the conditioning environment or soon after removal. 3.2 MOLDED TEST
10、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 and under equivalent conditions as production parts. The plaques shall have the following dimensions: 300 x 300 mm,
11、 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 Density 1.15 1.36 g/cm3 (ISO 1183, Method A) 3.2.3 Determination of Ash 3.2.3.1 Ash Content, by Weight 57 - 65% (ISO 345
12、1/1, Method A, 1 h at 650 +/- 25 C) 3.2.3.2 Glass Fiber Content, by Weight 37 42% 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 an o
13、ven 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 64 MPa min (ISO 527-4, 150 min x 10 x 2.5 +/- 0.2 mm specimen, 5 mm/min test speed) 3.2.5 Tensile Mo
14、dulus at Break 7.4 GPa min (ISO 527-4, 150 min x 10 x 2.5 +/-0.2 mm specimen, 5 mm/min test speed) 3.2.6 Tensile Elongation 1.2% min (ISO 527-4, 150 min x 10 x 2.5 +/- 0.2 mm specimen, 5 mm/min test speed) 3.2.7 Flexural Modulus 6.5 GPa min (ISO 178, 60 x 10 x 2.5 +/- 0.2 mm specimen, 40 mm support
15、span, 2 mm/ minute test speed) 3.2.8 Flexural Strength 144 MPa min (ISO 178, 60 x 10 x 2.5 +/- 0.2 mm specimen, 40 mm support span, 2 mm/ minute test speed) ENGINEERING MATERIAL SPECIFICATION WSS-M3D188-B1 Copyright 2016, Ford Global Technologies, LLC Page 3 of 7 3.2.9 Impact Strength, Izod, notched
16、 (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 72 kJ/m2, min 3.2.9.2 At - 40 C +/- 1 C 73 kJ/m2, min The test specimen must be conditioned for minimum of 6 h at the above specified temperature prior to im
17、pact test. Low temperature testing shall be done within the cold chamber, if not possible, test may be conducted outside, but within 5 s. 3.2.10 Heat Deflection Temperature 275 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 0.7 % ma
18、x 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. If the bake conditions must deviate from those below, please contact Materials Engineering. Panel size shall
19、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 % relative humidity. Weigh panels to the nearest 0.1 g (Wi). Condition panels for 10 days at 95 +/-2 % relative humidity a
20、nd 35 +/-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 +/- 5% relative humidity and re-weigh panels (Wf). Water absorption by weight (%) = (Wf - Wi) / Wi x 100 Temperature-shock p
21、anels for 32 minutes: See Figures 1 and 2. o Oven start temperature = 25 C o Place panels in IR oven, with both sides of panels exposed and thermocouple. Other heat sources may be used o Record temperatures of panels o Bake oven ramp rate: o Max oven temp = 205C o Review panels for blisters ENGINEER
22、ING MATERIAL SPECIFICATION WSS-M3D188-B1 Copyright 2016, Ford Global Technologies, LLC Page 4 of 7 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). o 3.2.12 Heat Aging Performance (ISO 188, exce
23、pt 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 Flexural Strength Change +/- 25% (Test Method per para 3.2.8) 3.2.1
24、2.3 Impact Strength, Izod Change +/- 25% (Test Method per para 3.2.9.1, specimens to be notched before heat aging) Figure 2. Time vs. Temperature 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 surfa
25、ce. 3.4 SUPPLEMENTAL INFORMATION The following curves are to be submitted with the data packages: Engineering Stress/Strain at 23 C ENGINEERING MATERIAL SPECIFICATION WSS-M3D188-B1 Copyright 2016, Ford Global Technologies, LLC Page 5 of 7 3.5 MATERIAL PROPERTIES REPORT ONLY 3.5.1 Coefficient of Line
26、ar Thermal Expansion Report Value, E-5 mm/mm/ C (ASTM D696, -30 C to 30 C) 3.5.2 Molding Shrinkage (ISO 2577, approximately 300 x 300 x 2.5 mm +/- 0.2 mm compression molded specimen) 3.5.2.1 After 48 h at 23 C +/- 2 C Report Value, % growth 3.5.2.2 After 48 h at 120 C +/- 2 C, 23 48 hr at 23 C +/- 2
27、 C Report Value, % growth 3.5.3 Water Absorption 3.5.3.1 24 hr exposure, Report Value, % (ISO 62, 300 x 300 x 2.5 +/- 0.2 mm specimen) 3.5.3.2 10 day exposure, Report Value, % (ISO 62, 300 x 300 x 2.5 +/- 0.2 mm specimen) 3.5.4 Poissons Ratio Report Ratio (Test Method-ISO 527-1 Adhesive testing: ESB
28、-M11P27-A or WSB-M11P27-B; Adhesive Bonding ES Specifications WSS-M2P180-D ESB-M11P27-A or WSB-M11P27-B ESDA53-1B322-AA and ES-EU5A-1B327-AA 3.2.2 Density* 1 3 3 1 3 3 3.2.3 Determination of Ash 3 1 3 1 1 1 3.2.3.1 Ash Content, by weight 3 1 3 1 1 1 3.2.3.2 Glass Fiber Content by Weight 3 1 3 1 1 1
29、3.2.3.3 Glass Fiber Length 3 1 3 1 1 1 3.2.4 Tensile Strength at Break* 3 5 15 1 5 5 3.2.5 Elongation at Break* 3 5 15 1 5 5 3.2.6 Tensile Modulus* 1 10 10 3.2.7 Flexural Modulus* 3 10 30 1 10 10 3.2.8 Flexural Strength* 3 10 30 1 10 10 3.2.9 Impact Strength Notched Izod (per condition)* 3 10 30 1 1
30、0 10 3.2.10 Heat Deflection Temperature (per condition) 3 2 6 1 2 2 3.2.11 Water Absorption, Blister Test 3 3 9 1 3 3 3.2.12 Heat Aging Performance 3.2.12.1 Tensile Strength at Break, Change 1 5 5 3.2.12.2 Impact Strength, Notched Izod, Change 1 10 10 3.3 Flammability 1 5 5 3.4 Curves - Stress/Strai
31、n Curves 1 1 1 per test 3.5.1 Coefficient of Linear Thermal Expansion (per condition) 1 3 3 3.5.2.1 Mold Shrinkage 1 5 5 1 5 5 3.5.2.2 Post Shrinkage 1 5 5 1 5 5 3.5.3.1 Water Absorption, 24 hr 1 3 3 3.5.3.2 Water Absorption, 10 day 1 3 3 3.4 Poissons Ratio 1 2 2 * For these requirements the 3 sigma value from the raw data is used to meet the requirements.
