1、 ENGINEERING MATERIAL SPECIFICATION Date Action Revisions Rev. 03 2017 03 20 Revised Replaced 30 cycles APGE with 6 weeks Ford-00.00-L-467 S. Short, NA 2016 10 17 Revised See Summary of Revisions S. Short, NA 2009 10 14 Activated Initial release for B2 parameters B.Witkowski FNA/ T.Reilly FoE Contro
2、lled document at www.MATS Copyright 2017, Ford Global Technologies, LLC Page 1 of 8 ANTI-FLUTTER, VISCOELASTIC EXPANDING PERFORMANCE WSS-M18P11-B2 REQUIREMENT, HEAT CURING 1. SCOPE This material defines the performance requirements for a die cut or extruded sealer that expands upon exposure to heat.
3、 This material can be supplied with or without a pressure sensitive adhesive coating (PSA) or a release liner. 2. APPLICATION The specification was released originally for materials used in the body shop area as an anti-flutter material for roof bow and closure applications. The materials utilized a
4、re viscoelastic in nature and provide additional damping over traditional anti-flutter materials commonly used in closure applications. This material can be supplied with or without an aggressive pressure sensitive adhesive which promotes adhesion to oily, uncleaned cold rolled and galvanized steel.
5、 This material expands during the electrocoat bake schedules per para. 3.4.5. Material cure is critical to long term material performance. It is recommended that time/temperature data packs be placed on a vehicle in the intended locations to determine the time at temperature requirements for a given
6、 application prior to release. The on-vehicle material time at electrocoat oven temperatures must fall within the cure window for the approved material. After release, periodic follow up time/temperature checks are recommended to insure cure performance is maintained. The Manufacturing Properties an
7、d Engineering Performance requirements defined in this specification are based on laboratory sample testing and define the minimum acceptance criteria for adhesive/polymer material performance. The function and design requirements for the engineered part are defined by the component SDS (Sub-system
8、Design Specification), key life test requirements, or vehicle program requirements. Prior to use, the engineered part must be evaluated under the intended application processing parameters. The choice of substrates, stamping lubricants, stamping and assembly plant processing conditions and specific
9、design application may affect engineered part performance. Compliance with this specification does not guarantee the engineered part will function for all potential applications on a vehicle. Selection of the appropriate material should therefore be based on jury evaluations or other NVH test proced
10、ures (such as door slam) as well as the required functional trial. 3. REQUIREMENTS 3.1 APPROVED SOURCES This specification requires the use of approved sources. Only the sources identified on the Ford Approved Source List (ASL) can be used when this specification is listed on the drawing, CAD file,
11、or other documents. The list of approved sources is located within Ford at or available externally through a Ford Materials Engineer. 3.2 SYSTEM COMPATIBILITY Initial material approval was based on a specific material system which included the substrate, stamping lubricants and adhesive/polymer. Th
12、e originally approved material system was oven cured using specific production process parameters. The choice of substrates, stamping lubricants, stamping and assembly plant processing conditions and specific design application ENGINEERING MATERIAL SPECIFICATION WSS-M18P11-B2 Copyright 2017, Ford Gl
13、obal Technologies, LLC Page 2 of 8 may affect adhesive /polymer / engineered part performance. If any of these parameters are changed, the material performance must be validated using the new parameters. 3.3 DIMENSIONS As specified on the engineering drawing. 3.4 MATERIAL PROPERTIES 3.4.1 Density +/
14、- 0.1 kg/m3 (ISO 845/ASTM D 3574,Test A, interior density) The density variation for any one supplier shall be +/- 0.1 kg/m3, based on the recorded density of their original approved production sample. 3.4.2 Water Absorption 5% max (FLTM BV 117-01, Method A, 8 h soak time, cure material per paragrap
15、h 3.4.5) 3.4.3 Volume Expansion 300% min 700% max (FLTM BV 108-02) The volume change variation for any one supplier shall be +/- 10%, based on the recorded volume change of their original approved production sample. 3.4.4 Volatile Organic Compounds (VOC) Content +/- 0.05 kg/L (EPA Method 24, Procedu
16、re B) The VOC Content variation for any one supplier shall be +/- 10%, based on the recorded VOC Content of their original approved production sample. 3.4.5 Material Cure Schedule (FLTM BV 150-05, Min and Max cure cycles, per respective region). Record chosen cycle in the Initial Sample Report. Crit
17、ical performance characteristics shall include, but are not limited to, the following: Volume Expansion, para 3.4.3 Adhesion, para 3.5.6 3.5 MANUFACTURING PROPERTIES 3.5.1 Differential Scanning Calorimetry Report (20 +/- 1 mg sample size, 5 C/min heating rate, 25 - 250 C Temperature range, submit He
18、at Flow vs. Temperature curve) Report onset of reaction 3.5.2 Bridging 3 mm max (SAE J243, ADS-9, Section 3.3, Method D, non-flow fixture, substrates per para 4.1, bake conditions per para 3.4.5) 3.5.3 Phosphate Wash Resistance Pass (FLTM BV 116-03, 2000psi, 23 C, substrates per para 4.1) Panel Prep
19、aration: Cut a 100 x 150 strip at production thickness of and apply a 300 x 300 mm panels prepared for each substrate per para 4.1. Pass a 2.2 kg roller over samples per ASTM D1000. Condition at 23 +/- 2 C for 1 hour prior to performing wash test. ENGINEERING MATERIAL SPECIFICATION WSS-M18P11-B2 Cop
20、yright 2017, Ford Global Technologies, LLC Page 3 of 8 3.5.4 Electrocoat Compatibility Pass (FLTM BV 119-01, use current production paints as identified by Materials Engineering) Shall not contaminate electrocoat primer bath or cause electrocoat film irregularities. 3.5.5 Uncured Adhesion Pass Test
21、Method: Prepare four panels for each substrate per para 5.1. Cut four 100 x 150 x 4 mm strips of the material and apply to four 300 x 300 mm panels prepared for each substrate per para 5.1. Pass a 2.2 kg roller over samples per ASTM D 1000. Invert two panels immediately after material application an
22、d condition for 72 h at 40 C. Observe for peeling or lifting of adhesive/polymer from panel or slump or sag between attachments, as appropriate. Stand the remaining two panels vertically immediately after material application and condition for 72 h at 40 C. Observe for peeling or lifting of material
23、 from panel or slump or sag between attachments, as appropriate. 3.5.6 Adhesion Characteristics Pass Test Method: Apply two 200 mm length ribbons of material to each of two 0.89 x 100 x 300 mm steel per para 4.1 and condition panels at 23 +/-2 C for 1 h. Bake on panel at min and max bake per para 3.
24、4.5. Position panels in a horizontal attitude during bake. After bake, condition panels at 23 +/-2 C for 4 h min. Evaluate adhesion by inserting the top of a sharp spatula under the end of the material strip. Grasp the tab of sealer and attempt to peel 180. The material shall not be removable in a c
25、ontinuous coherent film. Observe for any indication that the material fails to adhere to the substrate or is brittle. 3.5.7 Release Paper Adherence and Removal Pass (Pressure Sensitive/Tacky Materials only) The release paper must remain attached to the adhesive/polymer surface during shipment and ha
26、ndling. It must be easily removed from the adhesive/ polymer without part distortion or paper tear at ambient plant conditions (7 to 38 C). Final approval for the release paper may be part and plant specific. Release paper information shall be noted in the supplier control plan. 3.5.8 Odor Pass Shal
27、l be free from objectionable odors as determined by the manufacturing facility, both as received and after storage. 3.5.9 Storage Stability 6 Months Heat and moisture will accelerate aging. The materials shall be stored in sealed packages (if so recommended by the supplier) away from all sources of
28、heat and moisture. The self life of the material shall be 6 months from date of manufacture. Ambient plant conditions may fluctuate. Materials shall be evaluated for local plants conditions to determine plant specific requirements for temperatures and supplier shall provide testing of plant conditio
29、ns within their control plan. Deviations from the shelf life requirement shall be identified and concurred upon by the plant and noted in the supplier control plan. When materials are stored at temperatures below 15 C, they shall be conditioned at room temperature and checked for acceptable green st
30、ate adhesion prior to use . Application properties are optimized with adequate conditioning of the material. Supplier shall demonstrate minimum green state adhesion (if applicable for PSA) and note minimum storage temperature. ENGINEERING MATERIAL SPECIFICATION WSS-M18P11-B2 Copyright 2017, Ford Glo
31、bal Technologies, LLC Page 4 of 8 Critical performance characteristics to evaluate for shelf life stability shall include, but are not limited to, the following: Volume Expansion, para 3.4.3 Uncured Adhesion, para 3.5.5 Adhesion Characteristics, para 3.5.6 Release Paper Adherence and Removal, para 3
32、.5.7 - Cold slam resistance (3.6.3) on uncured material. 3.6 ENGINEERING REQUIREMENTS 3.6.1 Vertical Expansion (Ramp Expansion, SAE J1918, Method #3, cure material per para 3.4.5) 3.6.1.1 Minimum bake 10 min 3.6.1.2 Maximum bake 10 min 3.6.2 Corrosion Resistance Test Method: Place a 39 cm2 area sect
33、ion of production material on each of two 150 x 75 mm steelpanels, substrates per para. 4.1. Cover the material with an identical steel panel and clamp in position for close contact. Cure test panels in a mechanical convection oven for prior to e-coat requirements per FLTM BV 150-05, one for min and
34、 one for max bake. Remove clamps and subject the cured assemblies to the following exposure then separate assemblies and evaluate: After Ford 00.00-L-467, 6 weeks The material shall protect the test panel from corrosion. Disregard the area 10 mm from the edges of test panel. Under the material and a
35、t the border line of material edges there shall be no visible corrosion, flaking, or any evidence of loss of adhesion of the material 3.6.3 Cold Slam Resistance (FLTM BV 101-02, Procedure E, 300 x 300 mm panel for each substrate per para 4.1, 4 mm cured material thickness, condition for 4 h minimum
36、at -40 +/- 2 C prior to testing, test at -40 C for 10 slams) Sample preparation: Apply a 150 x 150 mm piece of material on a 300 x 300 mm panel. Material thickness to be determine by minimum expansion assumption used for engineering part design. Pass a 2.2 kg roller per ASTM D 1000 over sample withi
37、n 15 minutes of patch application. Cure between aluminum plates lined with release paper or in a fixture to maintain a 4 mm cured material thickness. Initial Test after 30 days at 50 +/- 2 C and 90 +/- 5% relative humidity Test after Ford 00.00-L-467, 6 weeks ENGINEERING MATERIAL SPECIFICATION WSS-M
38、18P11-B2 Copyright 2017, Ford Global Technologies, LLC Page 5 of 8 3.6.4 Peel Adhesion 0.5 N/ mm min (ASTM D 1876, substrates per para 4.1, material cure per para 4.2, 76.2 mm overlap, 2.0 +/- 0.4 mm adhesive bondline, condition for 30 minutes at specified 23 +/- 2 C prior to test.) All materials sh
39、all show 100% cohesive failure; report failure mode. 254 mm/min. pull rate. Report load between 25 and 75 mm cross-head travel. 3.7 SPONGE AND CELL STRUCTURE AFTER CURE Pass Shall exhibit uniform cell structure with no large voids. A natural skin formation shall result from the cure cycle. The spong
40、e shall have good resilience under finger pressure. Test Method: Cross sectional observation of the sponge shall be made by cutting through the skin and sponge mass of a cured specimen. The sponge system shall be visually examined. 3.8 MATERIAL CONSISTENCY Pass Shall be a smooth, homogeneous mixture
41、 free from foreign materials and properties detrimental to normal production operations. 3.9 PACKAGING Supplier shall be responsible advising on any packaging related issues to this material, including but not limited to any concerns for nesting, compression of material, etc. Plant shall review supp
42、liers control plan to address this issue. 3.10 FUNCTIONAL APPROVAL Materials being evaluated for approval to this specification shall be subjected to a production trial. Functional trial results must be approved by the affected assembly operation and Design Engineering. Results shall be made availab
43、le to Materials Engineering prior to material approval and release. This functional approval shall validate at a minimum effectiveness of the material damping 3.11 DAMPING PROPERTIES (ISO 6721-4) Supplier shall furnish report demonstrating loss factor vs frequency and Youngs modulus vs frequency at
44、target bake conditions. Minimum Damping Loss Factor Targets Temperature (C) 1Hz 10Hz 101Hz -20 0.1 0.1 0.1 -10 0.2 0.2 0.2 0 0.6 0.4 0.2 10 1.0 1.0 0.6 20 0.5 0.8 1.0 40 0.2 0.3 0.6 60 0.2 0.15 0.3 3.12 FOGGING Fog Number 70 min (SAE J1756, 3 h at 100 C heating, 21 C cooling plate, post test conditi
45、oning 16 h) Formation of clear film, droplets or crystals is cause for rejection. ENGINEERING MATERIAL SPECIFICATION WSS-M18P11-B2 Copyright 2017, Ford Global Technologies, LLC Page 6 of 8 3.13 TESTING REQUIREMENTS Test Material Approval Functional Trial Annual Every Lot 3.2 System Compatibility X 3
46、.3 Dimensions X X 3.4.1 Density (ISO 845/ASTM D 3574) X X 3.4.2 Water Absorption (FLTM BV 117-01) X X 3.4.3 Volume Expansion (FLTM BV 108-02) X X 3.4.4 Volatile Organic Compounds Content X X 3.4.5 Material Cure Schedule (FLTM BV 150-05) X X 3.5.1 Differential Scanning Calorimetry X X 3.5.2 Bridging
47、(SAE J243, ADS-9) X X 3.5.3 Phosphate Wash Resistance (FLTM BV 116-03) X X 3.5.4 E-Coat Compatibility (FLTM BV 119-01) X 3.5.5 Uncured Adhesion X X 3.5.6 Adhesion Characteristics X X 3.5.7 Release Paper Adherence and Removal X X 3.5.8 Odor X X 3.5.9 Storage Stability X 3.6.1 Vertical Expansion X X 3
48、.6.2 Corrosion Resistance X X 3.6.3 Cold Slam Resistance (FLTM BV 101-02) X X 3.6.4 Peel Adhesion (ASTM D 1876) X X 3.7 Sponge and Cell Structure After Cure X X 3.8 Material Consistency X X 3.9 Packaging X X 3.10 Functional Approval X X 3.11 Damping Properties (ISO 6721-4) X X 3.12 Fogging (SAE J175
49、6) X X ENGINEERING MATERIAL SPECIFICATION WSS-M18P11-B2 Copyright 2017, Ford Global Technologies, LLC Page 7 of 8 4. GENERAL INFORMATION The information given below is provided for clarification and assistance in meeting the requirements of this specification. Contact for questions concerning Engineering Material Specifications. 4.1 SUBSTRATES Cold rolled steel as specified on engineering drawing. Panel thickness: 0.8 mm unless otherwise specified. Note: If any other steel, suc
