1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2009 05 29 N-STATUS Replaced by WSS-M2G314-B2 M. Mehandru, FNA 2007 04 19 Revised Inserted 2.1, 5.5.5, Table 1 Revised 2. M. Mehandru 1990 02 08 Released NB00E00179051000 K.R. King, E.R. Rezendes Printed copies are uncontrolled Copyright 2009,
2、 Ford Global Technologies, LLC Page 1 of 7 PRIMER, GLASS, MOISTURE CURE WSB-M2G314-B NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is a highly reactive moisture sensitive solvent/resin blend adhesion promoting primer. 2. APPLICATION This material was released orig
3、inally for priming windshield glass and providing UV blackout protection for the one component faster moisture curing urethane adhesive, WSB-M2G316-B. This primer is referred to as blackout glass primer in the WSB-M2G316-B specification. This primer is applied only to glass surfaces prepared with gl
4、ass primer WSB-M5B280-C/C2/C3. 2.1 MANUFACTURING PROCESS RECOMMENDATION This primer is moisture sensitive and requires special handling for manual and automated process as outlined in Table 1 and Table 2. The process parameters listed in Table 1 and Table 2 cover the critical elements for this mater
5、ial and are not all inclusive. Please consult with Materials Engineering for any questions. Approved suppliers are responsible for maintaining the accuracy and relevancy of these process parameters (in their Process Standard). Approved suppliers must submit any changes to these process parameters in
6、 a timely manner (within 30 days) for review and approval by Materials Engineering. 3. REQUIREMENTS 3.0 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and part producers must conform to the Companys Standard Requirements For Production Materials (WSS-M99P1111-A). 3.4 COLOR Black 3
7、.5 SHEAR ADHESION, min 3.4 MPa 100% cohesive failure of adhesive on production E-coat ENGINEERING MATERIAL SPECIFICATION WSB-M2G314-B Printed copies are uncontrolled Copyright 2009, Ford Global Technologies, LLC Page 2 of 7 Exposure Conditions - Bonded Test Assemblies: . Normal (fresh materials) tes
8、t at R.T., -10 +/- 1 C., and 43 +/- 2 C. . Normal (urethane aged 3 months and primers aged 2 months at 35 +/- 2 C) test at R.T., - 10 +/- 1 C., and 43 +/- 2 C. . 2 weeks heat age at 90 +/- 2 C. . 240 h water immersion at 32 +/- 1 C. (FLTM BI 104-01). . 2 weeks humidity age at 98 +/- 2% relative humi
9、dity and 38 +/- 2 C. . 1000 h Weatherometer (FLTM BO 101-01). . 2 year Florida exposure, 5 South DWI. . See specification WSB-M2G316-B para 4.1, 4.2, 4.3, 4.4. Test Method Exceptions: Lap Shear . Prepare shear assemblies as illustrated in Figure 1. . Brush apply painted metal primer on the bottom 6.
10、4 mm of each primed or primed and painted coupon as outlined in Table 1. Condition the applied primer at R.T. for 30 minutes min, 96 h max. . Brush apply glass primer wipe on the bottom 6.4 mm of each glass coupon outlined in Table 1. Wipe off with a clean cloth immediately after application. . With
11、in 10 minutes maximum after glass primer wipe off brush apply glass blackout primer to the glass surface in the same area. Condition primer at R.T. for 5 minutes min, 72 h max. . Apply a 6.4 mm diameter bead of adhesive along the primer glass coupon surface. Within 5 minutes after adhesive applicati
12、on, position the adhesive on the glass coupon in contact with the primed metal surface. Maintain a 5 mm nominal adhesive bondline thickness. . Condition assembly at R.T. for 72 h prior to test or environmental aging. Assemblies tested at -10 C. and 43 C shall be maintained at temperature for 2 h min
13、 prior to test. After environmental aging, maintain the assemblies at R.T. for 4 h prior to test. . Determine the adhesion in a tensile machine having a jaw separation rate of 25 mm/minute. Report strength value and mode of failure. Refer SAE J1529 for sample fixture and other pertinent test informa
14、tion. . See Specification WSB-M2G316-B para 5.1, 5.2, 5.3, 5.4 Note: Any new primer must be tested for adhesion properties. Adhesion values and mode of failure shall be reported prior to approval and release for plant application. ENGINEERING MATERIAL SPECIFICATION WSB-M2G314-B Printed copies are un
15、controlled Copyright 2009, Ford Global Technologies, LLC Page 3 of 7 3.6 VISCOSITY (FLTM BI 111-01, No. 4 Ford Cup) As received 10 - 20 s Aged, max 25 s (72 h at 54 +/- 2 C.) 3.7 SOLIDS, min 35% (ASTM D 2834, except heat at 102 +/- 2 C. in a mechanical convection oven for 3 h) 3.8 ODOR The material
16、must not have a toxic or noxious odor. After curing, the material must be relatively non-odorous. 3.9 FOGGING TEST (SAE J1756, 3 h at 100 C heating, 21 C cooling plate, post test conditioning 1 h and 16 h) Fog Number, min 60% Formation of clear film, droplets or crystals is cause for rejection. 3.10
17、 ASH CONTENT, BASED ON SOLIDS WEIGHT, max 30% Test Method: Place the crucible containing the solids residue in a cool muffle furnace. Slowly heat to and maintain at 760 +/- 30 C for 1 h. Cool in a desiccator, weigh, and calculate the ash content. 3.11 WEIGHT PER VOLUME (ASTM D 816) The weight tolera
18、nce for any given supplier shall be +/- 0.025 kg/l based on the recorded weight of the original approved production sample, see para 5.3. 3.12 HIDING POWER The primer when hand brushed on glass surfaces shall level with no evidence of brush marks, voids, or bare spots to the extent that the glass un
19、dersurface is visible. The material under test shall be equal to or better than the current same supplier approved production material for smoothness when applied under identical conditions. 3.13 BRUSHABILITY The primer when hand brushed on glass surfaces shall level with no evidence of brush marks,
20、 voids, or bare spots to the extent that the glass undersurface is visible. The material under test shall be equal to or better than the current same supplier approved production material for smoothness when applied under identical conditions. ENGINEERING MATERIAL SPECIFICATION WSB-M2G314-B Printed
21、copies are uncontrolled Copyright 2009, Ford Global Technologies, LLC Page 4 of 7 3.14 DRYING RATE, max 10 minutes Test Method: Test apply a hand brushed application 0.076 to 0.127 mm film of primer on 25 mm wide to a 75 x 75 mm clean glass plate. To determine the primer drying rate, immediately and
22、 at rapid intervals, dab the primer film with a wad of absorbent cotton. Observe if any of the cotton fibers adhere to the primed surface. Record the drying rate, as the time elapsed from the initial primer application until the cotton fibers do not adhere to the primer. R.T. condition is required.
23、3.15 OPEN TIME The material, upon being applied to the glass, shall be dry to the touch prior to urethane ( WSB-M2G316-B) application. Maximum open time shall not exceed 96 h and primer applied surfaces shall be kept free of contamination (e.g. dirt, heavy dust, oils, grease, alcohol, etc.). 3.16 ST
24、ORAGE STABILITY The primer must be stored away for all sources of heat, such as ovens, direct sunlight, etc. This primer must not be stored outside. The storage period for the primer shall not exceed 2 months from the time of shipment at a temperature of 40 C. max. If the primer is stored at tempera
25、tures below 23 C., it must be conditioned at R.T. for 48 h prior to usage. 3.17 SENSITIVITY TO ALCOHOL CAUTION: Slight traces of alcohol will inhibit the cure of this adhesive. The use of alcohol or alcohol containing solvents is prohibited for cleanup or other uses. 3.18 QUALITY The material shall
26、be a smooth, homogeneous mixture free from foreign materials and properties detrimental to normal production operations. 3.19 NON-INTERCHANGEABILITY OF MATERIALS Only approved urethane adhesives, and primers from the sample production (supplier) source shall be used in conjunction with one another.
27、See related materials for use (para 5.5). 3.20 FUNCTIONAL APPROVAL Material being evaluated for initial approval to this specification shall be subjected to a production trial. Functional trial results should be available to Design and Materials Engineering prior to material approval and release. 5.
28、 GENERAL INFORMATION The information given below is provided for clarification and assistance in meeting the requirements of this specification. 5.1 FLASH POINT -1 C (ASTM D 56, Tag closed cup) ENGINEERING MATERIAL SPECIFICATION WSB-M2G314-B Printed copies are uncontrolled Copyright 2009, Ford Globa
29、l Technologies, LLC Page 5 of 7 5.2 FLAMMABILITY AND/OR TOXICITY This material represents a potential fire and/or health hazard. The Manufacturing Engineering Department shall notify both the Plant Security and the Safety Units of its presence in the plant to assure that proper fire and/or health pr
30、ecautions are provided. The location in which it is used or stored shall be included in the notifications. 5.3 WEIGHT PER VOLUME Materials conforming to this specification and found satisfactory in production, range from 0.8 - 1.1 kg/L. 5.4 MATERIAL HANDLING This primer is moisture sensitive and dry
31、 air or a nitrogen blanket should be utilized in production to preclude contact with atmospheric moisture. This glass primer must be agitated prior to use to preclude settling of solids content. The primer must be agitated by a re-circulating system operated at low pressure as required during usage.
32、 5.5 RELATED MATERIALS 5.5.1 Glass Primer Wipe WSB-M5B280-C 5.5.2 Adhesion Primer, Painted Metal WSB-M2G234-C 5.5.3 Adhesive WSB-M2G222-B 5.5.4 Adhesive WSB-M2G316-B 5.5.5 AVP-T118-002 Adhesive and glass compatibility process laboratory and plant validation ENGINEERING MATERIAL SPECIFICATION WSB-M2G
33、314-B Printed copies are uncontrolled Copyright 2009, Ford Global Technologies, LLC Page 6 of 7 Table 1 Process Parameters For Manual Application WSB-M2G314-B Application Agitation Shaker (600 cycles/minute) +/- 30 travel from horizontal. 0.3 or 1.0 L container Primer must be agitated before applica
34、tion: Container must be shaken for 10 minutes prior to initial use. If the sealed container remains idle for more than 2 hours it must be agitated for 5 minutes prior to filling dispense vessels. Primer must be applied with brush or Felt tipped Polyethylene or Polytetrafluoroethylene squeeze bottles
35、. A continuous 3 to 5 mil (0.08 mm 0.13 mm) wet film without skips or streaks shall exist behind the applicator tool. Primer must be applied to the WSB-M5B280 primer path a minimum of 20 seconds prior to the application of the urethane adhesive. The time between the application of primer and urethan
36、e must not exceed 110 hours. Open Time In the original container (1L) after opening. Container must be closed after dispensing. Transferred to Squeeze Bottles Must be used within 8 hours. Must be used within 4 hours Storage Primer must be stored indoors between 10 C and 35 C to avoid extreme heat or
37、 cold. Must not be stored in direct sunlight. ENGINEERING MATERIAL SPECIFICATION WSB-M2G314-B Printed copies are uncontrolled Copyright 2009, Ford Global Technologies, LLC Page 7 of 7 Table 2 Process Parameters For Automated Application WSB-M2G314-B Application Agitation 5 Gallon (18.93 L) container
38、 Nordson Flow Through- Felt system must be used. Primer must be agitated before application: Shaker (1 cycle/second) 60 minutes End-over end tumbler (20 rpm) 3 hours Roller (24 rpm) 7 hours Note: Primer must be installed within 2 hours following agitation. System must circulate the primer to prevent
39、 premature settling of the primer. Circulation must be approximately 762 mm/min in order to turn the material over at least 1 time in an hour. A continuous 3 to 5 mil (0.08 mm 0.13 mm) wet film without skips or streaks shall exist behind the applicator tool. Primer must be applied to the WSB-M5B280
40、primer path a minimum of 20 seconds prior to the application of the urethane adhesive. The time between the application of primer and urethane adhesive must not exceed 110 hours. Loading the System System must be flushed with Methyl Ethyl Ketone to remove any residual moisture or primer. Dispense gu
41、ns must be cleaned and flushed as well. Residual flush solvent must be pumped from the system prior to the introduction of the primer. Note: If the system is down for more than 6 hours, the Shut down procedure must be followed. Shutting Down the System It is necessary to flush the system with Methyl
42、 Ethyl Ketone to remove residual primer. Once the residual primer has been removed, the system should be pumped dry of the flush solvent. Tubing Polyethylene or Polytetrafluoroethylene tubing must be used. Nylon tubing will allow the permeation of moisture, resulting in the premature curing of the p
43、rimer. Moisture An air desiccant must be used to dry air present in the containment vessel. A 35 kPa dry nitrogen blanket can also be used. Applicator Natural hair brushes or a felt applicator must be used. Open Time Primer must be used within 2 weeks after introduction to the supply vessel. Storage Material must be stored indoors, between 10 C and 35 C to avoid extreme heat or cold. Must not be stored in direct sunlight.
