1、 ENGINEERING MATERIAL SPECIFICATION Date Action Revisions Rev 02 2014 10 15 Revised See 5 summary of revision J. Herl (EU) 2007 08 30 Revised Format Update Only 2003 01 27 Activated J. Crist Controlled document at www.MATS Copyright 2014, Ford Global Technologies, LLC Page 1 of 7 SEALER, HIGH HEAT E
2、XPANSION PERFORMANCE WSS-M18P11-B REQUIREMENT, HEAT CURING 1. SCOPE This material defines the performance requirements for a die cut or extruded sealer that expands upon exposure to heat. This material can be supplied with or without a pressure sensitive adhesive coating (PSA) or a release liner. 2
3、APPLICATION The specification was released originally for materials used in the body shop area for sealing openings in sheet metal surfaces. This material can be supplied with or without an aggressive pressure sensitive adhesive which promotes adhesion to oily, uncleaned cold rolled and galvanized s
4、teel. This material expands during the electrocoat bake schedules per para. 4.2. 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 gi
5、ven 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
6、 and 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-syst
7、em 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 specif
8、ic 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. 3. REQUIREMENTS 3.1 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and part producers
9、must conform to the Companys Standard Requirements For Production Materials (WSS-M99P1111-A). ENGINEERING MATERIAL SPECIFICATION WSS-M18P11-B Copyright 2014, Ford Global Technologies, LLC Page 2 of 7 3.2 SYSTEM COMATIBILITY Initial material approval was based on a specific material system which incl
10、uded the substrate, stamping lubricants and adhesive/polymer. The 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 may affe
11、ct 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 Cross sections/dimensions for tape shall be specified on the engineering drawing. 3.4 MATERIAL PROPERTIES 3.4.1 Density +/-
12、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 (FLTM BV 117-01, Method A, 8 h soak time, cure material per paragraph 4.2) 3
13、00 800% Volume Expansion 5% max 800% or greater Volume Expansion 8% max 3.4.3 Volume Expansion 300% min (FLTM BV 108-02, material cure per para 4.2) The volume change variation for any one supplier shall be +/- 10%, based on the recorded volume change of their original approved production sample. 3.
14、4.4 Volatile Organic Compounds (VOC) Content +/- 0.05 kg/L (EPA Method 24, Procedure 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 Cure Requirements Report (Define the process cure window for
15、material cure, Report minimum and maximum time at temperature requirements to define performance boundaries) ENGINEERING MATERIAL SPECIFICATION WSS-M18P11-B Copyright 2014, Ford Global Technologies, LLC Page 3 of 7 Critical performance characteristics shall include, but are not limited to, the follo
16、wing: 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 Heat Flow vs. Temperature curve) Report onset of reaction 3.5.2 Bridging 3 mm max (
17、SAE J243, ADS-9, Section 3.3, Method D, non-flow fixture, substrates per para 4.1, bake conditions per para 4.2) 3.5.3 Phosphate Wash Resistance (For PSA/Tacky only) (FLTM BV 116-03, 2000psi, 23 C, substrates per para 4.1) Panel Preparation: Cut a 100 x 150 strip at production thickness of and apply
18、 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. 3.5.4 Electrocoat Compatibility Must Pass (FLTM BV 119-01, use current production paints as identified by Materials Eng
19、ineering) Shall not contaminate electrocoat primer bath or cause electrocoat film irregularities. 3.5.5 Uncured Adhesion (PSA/Tacky only) Test 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
20、for each substrate per para 5.1. Pass a 2.2 kg roller over samples per ASTM D 1000. ENGINEERING MATERIAL SPECIFICATION WSS-M18P11-B Copyright 2014, Ford Global Technologies, LLC Page 4 of 7 Invert two panels immediately after material application and condition for 72 h at 40 C. Observe for peeling o
21、r 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 from panel or slump or sag between attachments, as
22、 appropriate. 3.5.6 Adhesion Characteristics 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 4.2. Position panels in a horizontal attitude during bake.
23、 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 continuous coherent film. Observe for any indication that t
24、he material fails to adhere to the substrate or is brittle. 3.5.7 Release Paper Adherence and Removal (Pressure Sensitive/Tacky Materials only) The release paper must remain attached to the adhesive/polymer surface during shipment and handling. It must be easily removed from the adhesive/ polymer wi
25、thout 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 Shall be free from objectionable odors as determined by the manufacturin
26、g 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 heat and moisture. The self life of the material shall be 6 months f
27、rom date of manufacture when stored at temperatures below 32 C. Ambient plant conditions may fluctuate between 15 C and 38 C. Materials shall be evaluated for local plants conditions to determine plant specific requirements for temperatures in excess of 32 C. Deviations from the shelf life requireme
28、nt shall be identified and concurred upon by the plant and noted in the supplier control plan. When materials are stored at temperatures below 23 C, they shall be conditioned at room temperature for a minimum of 24 hours prior to application. Application properties are optimized with adequate condit
29、ioning of the material. ENGINEERING MATERIAL SPECIFICATION WSS-M18P11-B Copyright 2014, Ford Global Technologies, LLC Page 5 of 7 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 Adhes
30、ion, para 3.5.5 Adhesion Characteristics, para 3.5.6 Release Paper Adherence and Removal, para 3.5.7 3.6 ENGINEERING REQUIREMENTS 3.6.1 Vertical Expansion (Ramp Expansion, SAE J1918, Method #3, cure material per para 4.2) 3.6.1.1 Minimum bake Report 3.6.1.2 Maximum bake Report 3.6.2 Corrosion Resist
31、ance Test Method: Place a 39 cm2 area section of production material on each of two 150 x 75 mm steel panels, 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 requi
32、rements per FLTM BV 150-05, one for min and one for max bake. Remove clamps and subject the cured assemblies 6 weeks to Ford 00.00-L-467, exposure then separate assemblies and evaluate: The material shall protect the test panel from corrosion. Disregard the area 10 mm from the edges of test panel. U
33、nder the material and at 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, co
34、ndition for 4 h minimum at -40 +/- 2 C prior to testing, test at -40 C for 10 slams) ENGINEERING MATERIAL SPECIFICATION WSS-M18P11-B Copyright 2014, Ford Global Technologies, LLC Page 6 of 7 Sample preparation: Apply a 150 x 150 mm piece of material on a 300 x 300 mm panel. Material thickness to be
35、determine by minimum expansion assumption used for engineering part design. Pass a 2.2 kg roller per ASTM D 1000 over sample within 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 6
36、 weeks Ford 00.00-L-467 3.7 SPONGE AND CELL STRUCTURE AFTER CURE Shall exhibit uniform cell structure with no large voids. A natural skin formation shall result from the cure cycle. The sponge shall have good resilience under finger pressure. Test Method: Cross sectional observation of the sponge sh
37、all 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 Shall be a smooth, homogeneous mixture free from foreign materials and properties detrimental to normal production operations. 3.9 PACKAGING The materia
38、l shall be supplied in sealed packages and material blocking is not permitted during container shipping or storage 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
39、 assembly operation and Design Engineering. Results shall be made available to Materials Engineering prior to material approval and release. 4. GENERAL INFORMATION The information given below is provided for clarification and assistance in meeting the requirements of this specification. Contact for
40、 questions concerning Engineering Material Specifications. 4.1 SUBSTRATES 4.1.1 North American Production WSD-M1A333-A2, nominal 0.8 mm thickness, panels prepared with typical lubricants and at applications levels as specified by Materials Engineering. WSD-M1A333-A2, nominal 0.8 mm thickness, coated
41、 per WSS-M1P94-A to coating weight 60G60G-EL and 60G60G-HD, panels prepared with typical lubricants and at ENGINEERING MATERIAL SPECIFICATION WSS-M18P11-B Copyright 2014, Ford Global Technologies, LLC Page 7 of 7 applications levels as specified by Materials Engineering. Electrocoated steel panels p
42、repared per WSS-M3P1-D using current production paints as specified by Materials Engineering. 4.1.2 European Production All related materials used for approval of adhesive/polymer according to this specification, eg. Paint materials or metallic substrates, shall be note in the initial sample report
43、of the adhesive/polymer/ part. 4.2 MATERIAL CURE SCHEDULES (FLTM BV 150-05, use table for appropriate regional vehicle assembly site, cure material per material application “Prior to Electrocoat“, min and max bake, condition at 23 +/- 2 C for 1 h min. prior to testing) 5. SUMMERY OF REVISION 2014 10 15 3.6.1 removed salt spray and APGE Added 6 weeks Ford 00.00-L-467, 3.6.3 removed APGE added 6 weeks Ford 00.00-L-467
