FORD WSS-M4G295-A-2011 SEALER POLYVINYL CHLORIDE (PVC) SPRAYABLE PRIMER OVEN CURING CHIP RESISTANT IMPROVED PAINTABILITY TO BE USED WITH FORD WSS-M99P1111-A 《可喷射底漆炉内固化抗剥落的有改善的可涂装.pdf
《FORD WSS-M4G295-A-2011 SEALER POLYVINYL CHLORIDE (PVC) SPRAYABLE PRIMER OVEN CURING CHIP RESISTANT IMPROVED PAINTABILITY TO BE USED WITH FORD WSS-M99P1111-A 《可喷射底漆炉内固化抗剥落的有改善的可涂装.pdf》由会员分享,可在线阅读,更多相关《FORD WSS-M4G295-A-2011 SEALER POLYVINYL CHLORIDE (PVC) SPRAYABLE PRIMER OVEN CURING CHIP RESISTANT IMPROVED PAINTABILITY TO BE USED WITH FORD WSS-M99P1111-A 《可喷射底漆炉内固化抗剥落的有改善的可涂装.pdf(6页珍藏版)》请在麦多课文档分享上搜索。
1、 ENGINEERING MATERIAL SPECIFICATION Date Action Revisions Rev. 1 2011 07 13 Revised Odor Requirements added W. Janitschke, FoE 2007 05 22 Activated W. Janitschke/B. trecht Controlled document at www.MATS Copyright 2011, Ford Global Technologies, LLC Page 1 of 6 SEALER, POLYVINYL CHLORIDE (PVC), SPRA
2、YABLE, PRIMER OVEN WSS-M4G295-A CURING, CHIP RESISTANT, IMPROVED PAINTABILITY 1. SCOPE The material defined by this specification is a solvent release, heat curing, stone peck resistant PVC sealer for exterior body areas. 2. APPLICATION This specification was released originally for material used as
3、 a stone peck protective coating over baked electrocoat on the lower body side of passenger cars and cures during the body spray primer bake cycle. The material is compatible in paint process and can be applied by airless spray in a wet film thickness of 200 - 500 micrometer with or without pre-gell
4、ing prior to spray primer application. 3. REQUIREMENTS 3.1 STANDARD REQUIREMENTS Material suppliers and part producers must conform to the Companys Standard Requirements Materials (WSS-M99P1111-A). Part producers using this material in their products, must use Ford approved materials and must confor
5、m to a process control plan which has been approved by STA and/or the relevant Materials Activity. 3.2 TEST PANEL PREPARATION 3.2.1 Use 300 x 100 x 0.8 - 0.9 mm test panels, E-coated according to FLTM BI 120-01. The sealer must be applied on the cured E-coated test panel within 30 minutes after oven
6、 curing. 3.2.2 Use paint-materials and curing conditions according to (a) Primer ESK-M6J151-A Minimum: 5 min. 165 C Maximum: 5 min. 190 C (b) Clearcoat WSK-M32J125-A Minimum: 10 min. 130 C Maximum: 10 min. 140 C 3.3 COLOR Grey 3.4 SOLIDS 94% min (FLTM BV 150-10) 3.5 ASH 28% max (FLTM BV 150-10) ENGI
7、NEERING MATERIAL SPECIFICATION WSS-M4G295-A Copyright 2011, Ford Global Technologies, LLC Page 2 of 6 3.6 DENSITY at 23 C 1.34 kg/L max (ASTM D 1475) 3.7 VISCOSITY at 23 C (Rotational Rheometer i.e. Bohlin) (Tempering Time: 300 s Pause Interval: 180 s at 131 1/s Downward Measure: 131 1/s - 20 1/s in
8、 120 s (30 Measure Points) Viscosity (Pas) Yield Point (Pa) 3.7.1 As received 1.00 - 1.30 140 - 150 3.7.2 After Aging 1.35 - 1.45 100 - 140 (336 h at 30 +/- 2 C) 3.8 SURFACE CONDITION AFTER AGING (120 h at 80 +/- 2 C) After curing the material shall be dry to touch after cooling to 23 +/- 2 C. It sh
9、all be free from cracks or bubbles and shall show a uniform paint film without staining or discoloration. After bending 90 around a mandrel of 100 mm diameter within 2 s (see FLTM BV 153-04) there shall be no evidence of chipping or loss of adhesion between the various layers. Panel-Preparation: - C
10、oat the E-coated according panels with the material in such a manner that after curing a dry coating thickness of 200 + 500 micrometer is obtained. - After 10 minutes at 23 +/- 2 C, coat specimens wet on wet with spray primer. Cure specimens separately with min. and max. curing cycle (see para 3.2.2
11、) - After 10 minutes at 23 +/- 2 C, spray separate specimens with light colored standard and metallic base/clearcoat. Cure specimens separately with min. and max. curing cycle (see para 3.2.2) Test-Method: - Condition for 2 h at 23 +/- 2 C and expose in mechanical convection oven maintained at 80 +/
12、- 2 C for 120 h. - Test and examine after 24 h at 23 +/- 2 C. 3.9 FLEXIBILITY AFTER AGING (only E-Coat/Sealer) No cracking, chipping (FLTM BV 153-02, Method C, except test panels or loss of adhesion per para 3.2.1, dry coating thickness 200 + 500 micrometer, mandrel diameter 100 mm) 3.10 ADHESION AF
13、TER HEAT AGING (only E-Coat/Sealer) No cracking, chipping (FLTM BV 153-03, Method B, except test panels or loss of adhesion per para 3.2.1, dry coating thickness 200 + 500 micrometer, 14 d aging at 80 +/- 2 C, 2 h at 23 +/- 2 C, mandrel diameter 100 mm) ENGINEERING MATERIAL SPECIFICATION WSS-M4G295-
14、A Copyright 2011, Ford Global Technologies, LLC Page 3 of 6 3.11 ADHESION (only E-Coat/Sealer) The material at all ranges of coating thickness shall not peel off in a coherent film. Test Method: - Coat test panels from para 3.2.1 so that after the: (a) min curing cycle, (b) max curing cycle (see par
15、a 3.2.2) a dry coating thickness of 500 micrometer, beginning at one edge of the test panel and tapering to zero at the other is obtained. - After 24 h at 23 +/- 2 C, make two cuts through the coating along the 300 mm length of the panel and 20 mm apart and try to peel off coating starting at the ed
16、ge with the lowest film thickness. 3.12 ABRASION RESISTANCE (ASTM D 968) There shall be no exposed metal area showing after No loss of adhesion on and around the (a) 200 micrometer - 150 L area of stone impact. (b) 300 micrometer - 250 L and (c) 500 micrometer - 370 L gravel impact Panel Preparation
17、: - Test panels (para 3.2.1) shall be coated with the material in such a manner (airless), that after curing a dry coating thickness of (a) 200 - 250, (b) 300 - 350, (c) 450 - 500 micrometer is obtained. - After 10 minutes at 23 +/- 2 C, coat specimens wet on wet with spray primer. Cure specimens se
18、parately with min. and max. curing cycle (see para 3.2.2) - After 10 minutes at 23 +/- 2 C, spray separate specimens with light colored standard and metallic base/clearcoat. Cure specimens separately with min. and max. curing cycle (see para 3.2.2). Condition for 2 h at 23 +/- 2 C and expose in mech
19、anical convection oven maintained at 70 +/- 2 C for 120 h. Test Method: - After conditioning for 24 h at 23 +/- 2 C, determine the abrasion resistance (ASTM D 968, except I.D. of tube, 25 mm, and at a gravel throughput rate of 30 - 40 L/h. For each specimen a 5 L volume of fresh gravel shall be used
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