FORD WSB-M18P11-A2-2012 SEALER LOW TEMPERATURE EXPANDING PERFORMANCE REQUIREMENTS TO BE USED WITH FORD WSS-M99P1111-A 《低温扩张密封层的性能要求 与福特WSS-M99P1111-A 一起使用[使用 福特WSS-M18P11-B3]》.pdf
《FORD WSB-M18P11-A2-2012 SEALER LOW TEMPERATURE EXPANDING PERFORMANCE REQUIREMENTS TO BE USED WITH FORD WSS-M99P1111-A 《低温扩张密封层的性能要求 与福特WSS-M99P1111-A 一起使用[使用 福特WSS-M18P11-B3]》.pdf》由会员分享,可在线阅读,更多相关《FORD WSB-M18P11-A2-2012 SEALER LOW TEMPERATURE EXPANDING PERFORMANCE REQUIREMENTS TO BE USED WITH FORD WSS-M99P1111-A 《低温扩张密封层的性能要求 与福特WSS-M99P1111-A 一起使用[使用 福特WSS-M18P11-B3]》.pdf(7页珍藏版)》请在麦多课文档分享上搜索。
1、 ENGINEERING MATERIAL SPECIFICATION Material Name Specification Number Date Release No. Release/Revision 2012 04 04 N Status Replaced by WSS-M18P11-B3 B. Witkowski, NA 1993 02 17 NB00E10211510000 Released D. DiGregorio E. Rezendes WP 3948-a Page 1 of 7 SEALER, LOW TEMPERATURE EXPANDING, PERFORMANCE
2、WSB-M18P11-A2 REQUIREMENTS NOT TO BE USED FOR NEW DESIGN 1. SCOPE This specification defines the performance requirements for a die cut or extruded sealer that expands upon exposure to heat and can be used at temperatures ranging from 124 C metal temperature for 10 minutes to 177 C metal temperature
3、 for 20 minutes. This material can be supplied with or without a pressure sensitive adhesive coating or a release liner. 2. APPLICATION This specification was released originally for material used in the paint shop area for sealing openings in sheet metal surfaces. The material can be supplied with
4、or without an aggressive pressure sensitive adhesive which promotes adhesion to electrocoat primed steel substrates. The material expands during the primer or enamel bake schedules noted per para 5.3. Materials meeting this performance specification are identified on the Corporate Approved Source Li
5、st. Compliance with this performance specification does not guarantee the sealer will function for all potential applications on a vehicle. The specific design condition should be evaluated by Car Engineering NVH for acoustical properties and a plant trial or laboratory simulation prior to release o
6、f this material. 3. REQUIREMENTS 3.1 STATISTICAL PROCESS Suppliers must conform to the requirements of Ford Quality System Standard Q-101. A mutually acceptable Control Plan as described therein is required for material/source approval. Appropriate statistical tools must be used to analyze process/p
7、roduct data so that variation in the final product is continuously reduced. 3.2 INFRARED SPECTROPHOTOMETRY AND/OR THERMAL ANALYSIS Ford Motor Company, at its option, may conduct infrared and/or thermal analysis of material/parts supplied to this specification. The IR spectra and thermograms establis
8、hed for initial approval shall constitute the reference standard and shall be kept on file at the designated material laboratory. All samples shall produce IR spectra and thermograms that correspond to the reference standard when tested under the same conditions. 3.3 CONDITIONING AND TEST CONDITIONS
9、 ENGINEERING MATERIAL SPECIFICATION WSB-M18P11-A2 WP 3948-b Page 2 of 7 All test values indicated herein are based on material conditioned in a controlled atmosphere of 23 +/- 2 C and 50 +/- 5 % relative humidity for not less than 24 h prior to testing and tested under the same conditions unless oth
10、erwise specified. 3.4 DIMENSIONS As specified on engineering drawing and/or the Trim & Sealer Manual 3.5 VOLUME EXPANSION, min (FLTM BV 108-02) 3.5.1 At 124 C 300 % 3.5.2 At 177 C 300 % 3.6 WATER ABSORPTION, max 5 % (FLTM BV 117-01, Method A, 8 h soak time, material cure temperatures per para 5.3) 3
11、.7 BRIDGING, max 2.5 mm (SAE J243, ADS-9, Method D, non-flow) Test Method: . Condition 2 test fixtures with 150 mm material strips for 1 h at 23 +/- 2 C. Brake 1 test fixture at each material cure schedule specified in para 5.3. . Measure the amount of material sag through the holes. 3.8 EXPANSION,
12、min 300 % Test Method: Prepare six test assemblies as shown in Figure 1. Use electrocoat primed steel panels per para 5.2. Cure three samples at each of the bake schedules indicated in para 5.3. Allow samples to cool to 23 +/- 2 C for 1 h minimum. Calculate the percent expansion as the relationship
13、between the maximum expanded thickness of the cured material (dimension “X“ - Figure 1) and the uncured thickness of the original sample (“T“). Percent Expansion = X - T x 100 _ T Disassemble test samples by cutting the cured sealer along the surface of panel A - Figure 1. The cured sealer shall be
14、resilient to the touch and exhibit a uniform cell structure. 3.9 ADHESION CHARACTERISTICS ENGINEERING MATERIAL SPECIFICATION WSB-M18P11-A2 WP 3948-b Page 3 of 7 Test Method: Apply two 200 mm length ribbons of material to each of two electrocoat primed steel panels per para 5.2 and condition panels a
15、t 23 +/- 2 C for 1 h. Bake one panel at each material cure schedule per para 5.3. Position panels in a horizontal attitude during material bake. After bake, condition panels at 23 +/- 2 C for 4 h minimum. Evaluate adhesion by inserting the top of a sharp spatula under the end of the material strip.
16、Grasp the tab of sealer and attempt to peel at 180 deg. The material shall not be removable in a continuous coherent film. Observe for any indication that the material fails to adhere to the substrate or is brittle or friable. 3.10 COLD FLEXIBILITY No cracking Test Method: Apply 150 x 9.5 x 9.5 mm l
17、ength of uncured material to a sheet of aluminum foil or other non-stick type surface material. Bake the material in a mechanical convection oven for 10 minutes at 124 +/- 2 C metal temperature and 20 minutes at 177 +/- 2 C metal temperature. Cool the material to 23 +/- 2 C for 4 h minimum and not m
18、ore than 24 h. Condition the material for 4 h at - 30 +/- 1 C and bend 180 deg around a temperature conditioned 24 mm diameter mandrel. 3.11 CORROSION RESISTANCE, min 500 h (ASTM B 117) Test Method: Place a 39 cm2 area section of uncured production material on each of two 150 x 75 mm electrocoat pri
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