1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2008 11 25 N-STATUS No Replacement Named L. Sinclair, FNA 1989 05 22 Revised EAP39440 10/02/89 A. Marion 1988 05 25 Released EAP42002 27/04/88 A. Marion Printed copies are uncontrolled Copyright 2008, Ford Global Technologies, LLC Page 1 of 2
2、ADHESIVE, SYNTHETIC ELASTOMER BASE MASTIC ESZ-M2G313-A NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is a heat curing synthetic elastomer base mastic adhesive which can be used to bond unclean metal substrates; CRLC steel and Electrogalvanised (zinc/nickel 30-30).
3、 2. APPLICATION This specification was released originally for electrocoat baking temperature material to bond metal to metal on hood and deck lid inner panel to outer panel assemblies. 3. REQUIREMENTS 3.1 CONDITIONS All test values indicated herein are based on material conditioned in a controlled
4、atmosphere of 23 +/- 2 C. and 50 +/- 5% relative humidity for 24 hours prior to testing and tested under the same controlled conditions. 3.2 SAMPLE PREPERATION Prior to material application, the material shall be placed on the appropriately oiled test substrates to exhibit plant conditions and mater
5、ial requirements, and compatibility. 3.3 COLOUR As per submission Sample 3.4 BAKE SCHEDULE All testing to be carried out on panels processed per the following bake schedules: ELECTROCOAT Minimum 5 mins. 177 C Metal Temperature Maximum 30 mins 190 C Metal Temperature PRIMER SURFACER Minimum 8 mins. 1
6、13 C Metal Temperature Maximum 30 mins. 163 C Metal Temperature ENAMEL Minimum 8 mins 119 C Metal Temperature Maximum 20 mins 143 C Metal Temperature ENGINEERING MATERIAL SPECIFICATIONESZ-M2G313-A Printed copies are uncontrolled Copyright 2008, Ford Global Technologies, LLC Page 2 of 5 3.5 SUBSTRATE
7、S All testing to be carried out on both substrates: * CRLC steel: * Electrogalvanised (zinc/nickel 30-30) 3.6 VISCOSITY (FLTM BV 3-1, 40 psi (280 kPa) 2.64mm orifice) Testing to be conditioned and carried out at 25 +/- 1 C. 3.6.1 As received 15 40 s 3.6.2 Aged 72 h at 43 +/- 2 C 60 s max 3.7 SOLIDS,
8、 min 70 +/- 2% (ASTM D 2834, except heat in a Mechanical convection oven at 102 +/- 3 C) 3.8 WEIGHT PER VOLUME (ASTM D 816) The weight tolerance by any one supplier shall be +/- 0.024 kg/L. based on the recorded weight on his originally approved production sample. 3.9 HARDNESS, DUROMETER “A“ instant
9、aneous 50 +/- 5 minimum (ASTM D 2240) 80 +/- 5 maximum Condition samples for 2 hours prior to testing. One panel at each bake schedule per 3.4 3.10 CROSS LAP ADHESION, 240 kPa minimum (FLTM BV 1-4, material bondline 510 kPa maximum thickness 3mm). Test after each bake schedule per 3.4 No adhesive fa
10、ilure, cohesive failure only 3.10.1 Normal 3.10.2 Heat aged 2 weeks at 88 +/- 3 C. and condition at room temperature for 2 h before testing. 3.10.3 Humidity aged 240 h at 95 100% Relative Humidity and 38 +/- 1 C and condition at room temperature for 2 h before testing. ENGINEERING MATERIAL SPECIFICA
11、TIONESZ-M2G313-A Printed copies are uncontrolled Copyright 2008, Ford Global Technologies, LLC Page 3 of 5 3.11 PEEL STRENGTH 70 100 N/25mm minimum (ASTM D 1876-72) 100 130 N/25mm maximum Test after each bake schedule per 3.4 No adhesive failure, cohesive failure only 3.11.1 Normal 3.11.2 Heat aged
12、2 weeks at 88 +/- 3 C and condition at room temperature for 2 h before testing. 3.11.3 Humidity aged 240 h at 95-100% Relative Humidity and 38 +/- 1 C and condition at room temperature for 2 h before testing. 3.12 COLD ADHESION No cracking or adhesion failure (FLTM BV 1-2, Procedure “E“, 13 mm Mater
13、ial thickness, oily steel substrate, At the designated bake schedule matrix, Per 3.4. Three panels at each bake.) 3.13 WASH RESISTANCE No wash off (FLTM BV 16-1, method “A“ 1.5mm material thickness) 3.14 VOLUME CHANGE Refer General Information 6.0 3.15 WATER ABSORPTION, max 2% (FLTM BV 17-1, Method
14、“B“) 3.16 ELONGATION, minimum 15% Material as tested per 3.10 must have a minimum of 15% elongation per 25mm x 25mm square area for a 3mm bondline thickness, prior to breaking cohesively. 3.17 SAG RESISTANCE, max 5mm (FLTM BV 18-1, 13mm material thickness, oily steel substance, Bake as per 3.4. One
15、panel each bake) 3.18 ELECTROCOAT COMPATABILITY Shall not contaminate (FLTM BV 19-1, see para 6.2 electrocoat primer bath For electrocoat primers) or cause electrocoat film irregularities. 3.19 THERMAL STABILITY Resistance to Overbake, Ford Laboratory Test method FBV 50-1. 120 minutes at 220 C. No c
16、olour change of indicator paper (congo red). ENGINEERING MATERIAL SPECIFICATIONESZ-M2G313-A Printed copies are uncontrolled Copyright 2008, Ford Global Technologies, LLC Page 4 of 5 3.20 RESISTANCE TO OVERBAKE The sealer must not deteriorate or decompose after a full maximum paint system bake and tw
17、o (2) enamel repairs. Refer 3.4 bake schedules, but maximum electrocoat temperature to be 30 minutes at 205 C Metal Temperature. Panels requires for 3.9, 3.10 and 3.11. 3.21 CORROSION RESISTANCE (ASTM B 117) Prepare at least 3 samples as per cross-lap adhesion test. Do not bake the assembly or trim
18、excess material. Phosphate and electrocoat the assembly, and bake to the minimum bake schedule. Subject the assembly to 240 h salt spray. No creep from the edge of the sample is allowed. Pull samples as per 3.10, and note the cross lap adhesion strength of the material in kPa. 3.22 QUALITY Shall be
19、smooth, homogeneous mixture free from foreign materials and properties detrimental to normal production operations. 3.23 PRODUCTION MATERIAL STANDARD Production shipments shall be equivalent to approved purchase samples in laboratory and production use. 3.24 FUNCTIONAL APPROVAL Materials being evalu
20、ated 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 materials and release. 3.25 SUPPLIER RESPONSIBILITY All material supplied to this specification must be equivalent in al
21、l characteristics to the material upon which approval was originally granted. Prior to making any changes in the properties composition construction, colour, processing or labeling of the material originally approved under this specification, whether or not sucj changes affect the materials ability
22、to meet the specification requirements, the Supplier shall notify Purchasing and Materials Engineering of the proposed changes and obtain the written approval of PEO Materials Engineering. Test data, test samples and a new code identification are to be submitted with the request. Substance restricti
23、ons imposed by law, regulations or Ford, apply to the materials addressed by this document. The restrictions are defined in Engineering Material Specification WSS-M99P9999-A1, unless a different prefix or suffix is specified on the engineering document for the application. ENGINEERING MATERIAL SPECI
24、FICATIONESZ-M2G313-A Printed copies are uncontrolled Copyright 2008, Ford Global Technologies, LLC Page 5 of 5 4. APPROVAL OF MATERIALS Materials defined by this specification must have prior approval by Materials Engineering. Suppliers desiring approval of their materials shall first obtain an expr
25、ession of interest from Purchasing Design and Material Engineering. Upon request, the Supplier shall submit to Materials Engineering its own laboratory report to the specification (test results, not nominal value), the material designation and code number, and test specimens for Ford evaluation. Upo
26、n approval, the material will be added to the Engineering Materials Approved Source List. 5. TOXICITY-OBJECTIONABLE ODOR The material shall contain no benzol (benzene), chlorinated or other toxic compounds, or hydrolysable chlorine derivatives, nor have an obnoxious or objectionable odor. 6. GENERAL
27、 INFORMATION The information below is provided for clarification and assistance in meeting the requirements of this specification. 6.1 MECHANICAL CONVECTION OVEN The mechanical oven(s) used to cure the material shall be capable of obtaining 190 C. metal temperature on the body steel (0.75mm) within
28、8-10 min. 6.2 SUBSTRATES 6.2.1 CRLC steel: 0.75mm thickness surface precoated with M-99C47-A Mineral Oil, as per Australian Standard ASSI937-1977 6.2.2 Electrogalvanised (zinc/nickel 30-30): 0.75mm thickness surface precoated with M-99C47-A Mineral Oil, as per Australian Standard AS1937-1977 6.2.3 A
29、nodic electrocoat primer: ESB-FM64J12D 6.2.4 Cathodic electrocoat primer: ESB-FM64J19C1 6.3 STORAGE STABILITY The material shall be stored at temperatures below 38 C away from all sources of heat and sunlight. Heat greatly accelerates aging. Under these storage conditions, the minimum shelf life of
30、the material shall be 6 months. When these materials are stored at temperatures below 23 C, they shall be conditioned at room temperature prior to application. Adequate conditioning permits the material to obtain its optimum application properties. 6.4 FLASH POINT 23 C (ASTM D 56-82) 6.5 VOLUME CHANGE It is expected that a material of this nature has an expansion of the approximate range 10-20%. Any material evaluated to this specification must specify on an ISIR the volume expansion as tested in 3.14. Material approval will be dependant on functional trialing.
