FORD WSS-M4G295-A-2016 SEALER POLYVINYL CHLORIDE (PVC) SPRAYABLE PRIMER OVEN CURING CHIP RESISTANT IMPROVED PAINTABILITY TO BE USED WITH FORD WSS-M99P1111-A .pdf

1、 ENGINEERING MATERIAL SPECIFICATION Date Action Revisions Rev. 2 2016 10 17 Revised See Summary of Revisions S. Short. NA 2011 07 13 Revised Odor requirements added W. Janitschke, FoE 2007 05 22 Activated W. Janitschke/B. trecht Controlled document at www.MATS Copyright 2016, Ford Global Technologie

2、s, LLC Page 1 of 8 SEALER, POLYVINYL CHLORIDE (PVC), SPRAYABLE, 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 s

3、pecification was released originally for material used as 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 t

4、hickness of 200 - 500 micrometer with or without pre-gelling prior to spray primer application. 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 list

5、ed 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. Part producers using this material in their products must conform to a process control plan which has been approved by STA and/or the re

6、levant 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 curing. 3.2.2 Use paint-materials and curing conditions according to (a

7、) 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) ENGINEERING MATERIAL SPECIFICATION WSS-M4G295-A Copyright 2016, Ford Global

8、Technologies, LLC Page 2 of 8 3.6 DENSITY at 23 C 1.34 kg/L max (ASTM D1475) 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 120 s (30 Measure Points) Viscosity (Pas) Yield Point (Pa) 3.7.1 As rece

9、ived 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 shall be free from cracks or bubbles and shall show a uniform paint film wi

10、thout 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: - Coat the E-coated according panels with the material in such a manner that

11、 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) - After 10 minutes at 23 +/- 2 C, spray separate specimens with light c

12、olored 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 +/- 2 C for 120 h. - Test and examine after 24 h at 23 +/- 2 C. 3.9 FLEXIBI

13、LITY 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 AFTER HEAT AGING (only E-Coat/Sealer) No cracking, chipping (FLTM BV 153-03

14、, 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-A Copyright 2016, Ford Global Technologies, LLC Page 3 of 8 3.11 ADHESION

15、 (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 para 3.2.2) a dry coating thickness of 500 micrometer, beginning at one edge

16、 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 edge with the lowest film thickness. 3.12 ABRASION RESISTANCE (ASTM D968) T

17、here 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: - Test panels (para 3.2.1) shall be coated with the material in such a m

18、anner (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 separately with min. and max. curing cycle (see para 3.2.2) - After 10 minut

19、es 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 mechanical convection oven maintained at 70 +/- 2 C for 120 h. Test Method: -

20、After conditioning for 24 h at 23 +/- 2 C, determine the abrasion resistance (ASTM D968, 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. - Check for abrasion resistance and loss of adhesion after the above grav

21、el impact. Continue abrasion test until exposure of metal area and again check for loss of adhesion. GRAVEL: Type “GABRO“ grain size 5 - 8 mm Supply Source: Odenwalder Hartstein Industrie Gmbh Lise-Meitner Str. 35 D 63457 Hanau ENGINEERING MATERIAL SPECIFICATION WSS-M4G295-A Copyright 2016, Ford Glo

22、bal Technologies, LLC Page 4 of 8 3.13 CORROSION RESISTANCE The material shall protect the test panel from corrosion. Under the material and at the border line of material edges it shall be seen no corrosion, no flaking or any evidence of loss of adhesion of the material. Panel-Preparation according

23、 to para 3.8, except sealer-thickness 500 micrometer min. Test-Method: - For Cold Rolled Steel: After 24 h at 23 +/- 2 C (CETP 00.00-L-467, 10 weeks) - For Precoated Steel: After 24 h at 23 C +/- 2 C expose test assemblies to a Scab Corrosion Test (CETP 00.00-L-467, 10 weeks) 3.14 FLOW RATE 2 mm max

24、 (FLTM BV 151-03) Test panels (para 3.2.1) shall be coated with the material in such a manner (airless), that a wet film thickness of 500 micrometer is obtained. 3.15 COMPATIBILITY WITH PRODUCTION PAINTS No tackiness of material surface, no cracking or blistering. The paint shall cover the sealer sa

25、tisfactorily without evidence of discoloration or staining. 3.15.1 Wetability and Staining Test Method: - Specimens prepared per para 3.12 - Proceed as outlined under FLTM BV 153-08, Method A, para 2 - 6, except use lightest and darkest solid color and metallic basecoat/clearcoat. - After 72 h at 23

26、 +/- 2 C, mask 1/2 of the sealer and expose for 240 h in the fluorescent sunlamp cabinet (FLTM BU 152-02). 3.15.2 Determination of Discoloration After Aging None Test Method: - Specimens prepared per para 3.15.1. - After 24 h at 23 +/- 2 C store separate assemblies in the darkness for 240 h at 40 +/

27、- 2 C in a mechanical convection oven. ENGINEERING MATERIAL SPECIFICATION WSS-M4G295-A Copyright 2016, Ford Global Technologies, LLC Page 5 of 8 3.15.3 Determination of Yellowing None (FLTM BV 153-12) 3.15.4 Resistance to Weathering No discoloration (SAE J1976) Test Method: - Specimens prepared per

28、para 3.15.1. - Expose test specimens in the Miami, Florida area for 6 months and 1 year at 5 to the south. - Prior to examination clean specimens using soap and water. 3.16 TEMPERATURE CYCLING TEST No chipping, flaking, or loss of adhesion Test Method: - Specimens prepared per para 3.15.1. - After c

29、onditioning 72 h at 23 +/- 2 C, expose specimens three times to the following cycles: 3 h at 80 +/- 2 C 1 h at 23 +/- 2 C 3 h at -40 +/- 1 C 1 h at 23 +/- 2 C 16 h at 38 +/- 2 C and 98 +/- 2% R.H. - After 24 h at 23 +/- 2 C, bend 90 around a mandrel of 100 mm diameter within 2 s (FLTM BV 153-04). 3.

30、17 RESISTANCE TO DRIPPING The material must not fall off or show evidence of dripping. Test Method: Test panels (para 3.2.1) shall be coated with the material in such a manner (airless), that a wet film thickness of 500 micrometer is obtained. After conditioning for 5 minutes at 23 +/- 2 C, place sp

31、ecimens in an inverted position in a mechanical convection oven and subject to the “Minimum Curing Cycle“ according to FLTM BV 150-05, Table 2. 3.18 ABRASIVES Material shall contain no abrasive agents Test Method: Dilute a 1 g sample of material under test with 3 g toluene and mix thoroughly. Rub a

32、portion of the diluted material approximately 10 times between two pieces of flat, clean plate glass. The appearance of scratches on the glass plates shall be considered failure. ENGINEERING MATERIAL SPECIFICATION WSS-M4G295-A Copyright 2016, Ford Global Technologies, LLC Page 6 of 8 3.19 FLASH POIN

33、T 100 C min (ASTM D93, Method A) Note: In case testing at higher temperatures is not feasible because of gelling of test material, the supplier must certify in writing that each separate volatile ingredient has a flash point greater than 100 C. 3.20 SPRAYABILITY AND APPEARENCE The material shall be

34、a smooth homogeneous mixture, free from foreign material and suitable for use in airless spray equipment. It shall spray evenly and rapidly with no tip clogging or fluctuations in the spray pattern and with a min spray back and fogging. The coating shall not exhibit craters, pinholes, sags, abnormal

35、 waviness or other objectionable appearance conditions. 3.21 QUALITY The material shall be of uniform quality, free from foreign material and properties detrimental to normal production use. 3.22 LINE TRIAL Materials being evaluated for approval to this specification shall be subjected to a producti

36、on trial. Functional trial results must be approved by the affected assembly operation. Results shall be made available to Materials Engineering prior to material approval and release 3.23 ODOR Rating 3 max (FLTM BO 131-03, Variant D) 3.24 TESTING REQUIREMENTS Test Material Approval Functional Trial

37、 Annual Every Lot 3.2 Test Panel Preparation X 3.3 Color X 3.4 Solids (FLTM BV 150-10) X 3.5 Ash (FLTM BV 150-10) X 3.6 Density at 23C (ASTM D 1475) X 3.7 Viscosity at 23C X 3.8 Surface Condition After Aging X 3.9 Flexibility After Aging (FLTM BV 153-02) X 3.10 Adhesion After Heat Aging (FLTM BV 153

38、-03) X 3.11 Adhesion X 3.12 Abrasion Resistance (ASTM D 968) X 3.13 Corrosion Resistance X 3.14 Flow Rate (FLTM BV 151- X ENGINEERING MATERIAL SPECIFICATION WSS-M4G295-A Copyright 2016, Ford Global Technologies, LLC Page 7 of 8 03) 3.15.1 Wetability and Staining X 3.15.2 Determination of Discolorati

39、on X 3.15.3 Determination of Yellowing (FLTM BV 153-12) X 3.15.4 Resistance to Weathering (SAE J1976) X 3.16 Temperature Cycling Test X 3.17 Resistance to Dripping X 3.18 Abrasives X 3.19 Flash Point (ASTM D93) X 3.20 Sprayability and Appearance X 3.21 Quality X 3.22 Line Trial X 3.23 Odor (FLTM BO

40、131-03) X 4. GENERAL INFORMATION This 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 COMPATIBILITY Any other underbody coating, applied to the productio

41、n material WSK-M4G295-A as an additional coating either for the purpose of repair or for other reasons, must be checked for compatibility with WSK-M4G295-A production material. 4.2 STORAGE STABILITY (From date of receipt at Ford Motor Company) The material must be stable for 3 month, when stored in

42、sealed unopened drums out of direct sunlight at ambient temperatures between 5 C and 32 C. 4.3 MATERIAL REFERENCE All related materials used for approval of adhesives according to this specification, e.g. paint materials or metallic substrates, shall be noted in the Initial Sample Report of the adhe

43、sive. 4.4 APPROVAL OF MATERIALS Suppliers desiring approval of their materials shall first obtain an expression of interest from Purchasing, Design or Product Development, and Materials Engineering. The supplier shall submit a completed copy of their laboratory test reports, signed by a qualified an

44、d authorized representative of the test facility, demonstrating full compliance with all the requirements of the Material Specification. Tested material samples must be available for review upon request and kept for a minimum of one year. Upon request, the supplier will review the associated quality

45、 control documents (Process Failure Mode and Effects Analysis, Control Plans, Certification testing) with Ford. ENGINEERING MATERIAL SPECIFICATION WSS-M4G295-A Copyright 2016, Ford Global Technologies, LLC Page 8 of 8 4.5 SUPPLIERS ONGOING RESPONSIBILITY All materials must be equivalent in all chara

46、cteristics to the material upon which approval was originally granted. Prior to making any changes to the material originally approved, whether or not such changes affect the materials ability to meet the specification requirements, the supplier shall notify the affected Supplier Technical Assistanc

47、e (STA), Purchasing, and Materials Engineering activities of the proposed changes (with reasons) by submission of a completed Suppliers Request for Engineering Approval, SREA. For parts and components using Ford Engineering Material Specifications, all samples tested to the specifications for Design

48、 Verification (DV), Production Verification (PV) and Production Part Approval Process (PPAP) sign off must be kept until Job 1. 4.6 RESTRICTED SUBSTANCE MANAGEMENT STANDARD Substance restrictions imposed by regulations or Company direction applies to the materials addressed by this document. The res

49、trictions are identified in the Restricted Substance Management Standard WSS-M99P9999-A1 which is updated yearly. It is the suppliers responsibility to comply with this standard on a continuing basis through IMDS and or GMAP reporting. 5. SUMMARY OF REVISIONS 2016 10 17 Added section 3.24 Testing Requirements table Removed reference to BI 123-01 Replaced BI 123-01 with CETP 00.00-L-467 Removed reference to ASTM B117 Updated Odor requirement Removed WSS-