1、 ENGINEERING MATERIAL SPECIFICATION Material Name File Control No. Specification Number Date Release No. Release/Revision 2014 10 17 N Status No replacement L. Sinclair, NA 1986 06 20 SM/EQ5608 TP Released WP 3948-a Page 1 of 5 SEALER, BUTYL RUBBER, SOLVENT FREE SMT5004GB4430 ESK-M4G261-A2 NOT TO BE
2、 USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is a solvent free, hot applicable (140 +/- 2 C) butyl rubber sealer with polyisobutylene plasticizer. 2. APPLICATION This specification was released originally for material used for bonding and sealing of door weatherstrip to r
3、oof. 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/product data
4、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 established for init
5、ial 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 All test va
6、lues 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 otherwise specified. ENGINEERING MATERIAL SPECIFICATION ESK-M4G261-A2 WP 3948 b Page 2
7、 of 5 3.4 COLOUR black 3.5 SOLIDS, min 98 % (FLTM EU-BV 50-10) 3.6 ASH, max 37 % (FLTM EU-BV 50-10) 3.7 DENSITY AT 20 C 1.2 +/- 0.1 g/cm3 (ASTM D 1475) 3.8 PENETRATION (Penetration according to ASTM D 937, 1.5 N total load mass, 5 s dwell time, data in 0.1 mm) 3.8.1 As Received 3.8.1.1 At 23 +/- 2 C
8、 60 +/- 15 3.8.1.2 At -30 +/- 1 C, min 10 (30 minutes tempering time) 3.8.1.3 At 60 +/- 2 C, max 125 (30 minutes tempering time) 3.8.2 After Ageing, max -25 % based on the value obtained under 3.8.1.1 (14 d at 80 +/- 2 C) 3.9 FLOW RATE no flow (FLTM EU-BV 53-1, Method A, except 30 minutes at 120 +/-
9、 2 C) 3.10 COLD RESISTANCE AFTER AGEING no loss of adhesion, no chipping TEST METHOD 1. Apply a 250 x 30 x 3 mm ribbon of material under test heated to 140 +/- 2 C centrally to 300 x 100 x 4 mm rubber plates according to SKM-2D9526-A. 2. Expose test assemblies in a mechanically convected air-dry ove
10、n at 80 +/- 2 C for two weeks. 3. After cooling to room temperature expose test assemblies in a cold box at minus 30 +/- 1 C for 4 h. 4. While still in the cold box bend test assemblies within 2 s around the 50 mm mandrel through an angle of 90 deg. ENGINEERING MATERIAL SPECIFICATION ESK-M4G261-A2 W
11、P 3948 b Page 3 of 5 3.11 SHEAR ADHESION 3.11.1 At 23 +/- 2 C, min 3.0 N/cm2 3.11.2 At -30 +/- 1 C no loss of adhesion (30 minutes tempering time) 3.11.3 At 60 +/- 2 C, min 1.0 N/cm2 (30 minutes tempering time) 3.11.4 After Waxing/Dewaxing, min 2.5 N/cm2 (5 minutes immersion in waxing compound accor
12、ding to U-MG009-21-A/B 1 h at 23 +/- 2 C, 5 minutes immersion in dewaxing compound according to U-MB 005-8000 or 8001-A, 1 h at 23 +/- 2 C) TEST METHOD 1. Prepare 25 x 125 mm test panels according to FLTM EU-BI 3-2, Method Bb. 2. Apply sealer of a temperature of 140 +/- 2 C to test panel according t
13、o clause 1 and bond immediately a 4 x 25 x 125 mm rubber plate as shown on Fig. 1. 3. Test shear adhesion at a rate of pull of 25 mm/minute and calculate in (N/cm2). 3.12 PEEL ADHESION, min 5.5 N/cm (FLTM EU-BU 51-1, Method B1, 1a, y = 1 mm, except apply sealer of a temperature of 140 +/- 2 C to tes
14、t panel and cover with rubber in 1 mm thickness according to SKM-2D9526-A at RT) 3.13 COMPRESSION LOAD 350 to 840 N (FLTM EU-BU 14-1, thickness 6 mm, width 8 mm) 3.14 REPAIR OVEN STABILITY Specimens, prepared according to 3.10, shall show no evidence of blistering after exposure in a mechanical conv
15、ection oven maintained at 120 +/- 2 C for 30 minutes Valuation after 60 minutes at 23 +/- 2 C. ENGINEERING MATERIAL SPECIFICATION ESK-M4G261-A2 WP 3948 b Page 4 of 5 3.15 MIGRATION STAINING no migration staining on visible paint areas TEST METHOD 1. Apply centrally a 250 mm standard piece with mater
16、ial under test to 100 x 300 mm not only white, but also metallic coated test panels prepared according to FLTM EU-BI 3-2, Method Bb, and press together three times evenly using a roller according to ASTM D 1000. 2. Expose test assemblies in a mechanical convected air-dry oven at 80 +/- 2 C for two w
17、eeks. 3.16 SUPPLIERS RESPONSIBILITY All materials supplied to this specification must be equivalent in all characteristics to the material upon which approval was originally granted. Prior to making any changes in the properties, composition, construction, color, processing or labelling of the mater
18、ial originally approved under this specification, whether or not such changes affect the materials ability to meet the specification requirements, the Supplier shall notify Purchasing, Toxicology and the affected Materials Engineering activity of the proposed changes and obtain the written approval
19、of the Materials Engineering activity. Test data, test samples and a new code identification are to be submitted with the request. Substance restrictions imposed by law, regulations or Ford apply to the materials addressed by this document. The restrictions are defined in Engineering Material Specif
20、ication WSS-M99P9999-A1, unless a different suffix (e.g., A2 or A3) is specified on the engineering document for the application. 4. APPROVAL OF MATERIALS Materials defined by this specification must have prior approval by the responsible Materials Engineering activity. Suppliers desiring approval o
21、f their materials shall first obtain an expression of interest from the affected Purchasing, Design and Materials Engineering activity. Upon request, the supplier shall submit to the specification (test results, not nominal values), the material designation and code number, and test specimens for Fo
22、rd evaluation. Upon approval, the material will be added to the Engineering Material Approved Source List. 5. GENERAL INFORMATION 5.1 STORAGE STABILITY (from date of receipt at FMC) Min. 12 months when stored at ambient temperature of 5 C to 28 C. ENGINEERING MATERIAL SPECIFICATION ESK-M4G261-A2 WP 3948 b Page 5 of 5
