1、 ENGINEERING MATERIAL SPECIFICATIONMaterial Name Specification NumberDate Release No. Release/Revision1985 04 16 C901-RD588050-31 Revised Para. 21984 11 26 C901-DC527367 ReleasedPage 1 of 6ADHESION REQUIREMENT, ADHESIVE FOR BONDING ESB-M11P27-AFRP/FRP AND FRP/METAL1. SCOPEThis specification defines
2、the adhesion requirements for an adhesive oran adhesive system suitable for structurally bonding FRP/FRP andFRP/metal assemblies.2. APPLICATIONThis specification was released originally for adhesives used tostructurally bond glassfiber reinforced polyester (FRP) and metalreinforcements in the constr
3、uction of truck liftgates. These adhesionrequirements cover assemblies consisting of FRP, zinc phosphate coatedand prime CRLC, and galvanized steel substrates. Adhesives meeting theserequirements can be applied on body components exposed to electrocoatbake ovens.This specification does not describe
4、initial adhesive cure conditions.The procedures for assembly bonding shall be prescribed in accordance toadhesive manufacturer and part supplier recommendations.Materials meeting this performance specification are identified on theCorporate Approved Source List.Compliance with this performance speci
5、fication does not guarantee thestructural adhesive will function for all potential applications on avehicle. The specific design condition should be evaluated by a planttrial or laboratory simulation prior to release of the material.3. REQUIREMENTS3.1 CONDITIONINGAll test values indicated herein are
6、 based on materials conditionedin a controlled atmosphere of 23 +/- 2 C and 50 +/- 5 % relativehumidity for 24 h prior to testing and tested under the sameconditions unless otherwise stated herein.ENGINEERING MATERIAL SPECIFICATIONESB-M11P27-APage 2 of 63.2 SHEAR ADHESION STRENGTH Average load speci
7、fied(ASTM D 3163, 12.7 mm/min and delamination ofcrosshead speed, 0.76 mm FRP substratebondline thickness, 6.5 cm2bondline area, substrates perpara. 5.1, process bakeschedules per para. 5.2, 3 samplesminimum per test condition, seeFigure 1 for sample illustration)FRP FRPTo toFRP MetalNormal, min(Con
8、dition for 30 min at specifiedtemperature prior to test)3.2.1 Test at 23 +/- 2 C 2.8 Mpa 2.8 MPa3.2.2 Test at 204 +/- 1 C 0.3 Mpa 0.3 MPa3.2.3 Test at -29 +/- 1 C 2.8 Mpa 2.8 MPaEnvironmental Aged, min(Condition for 24 h at 23 +/- 2 Cafter exposure, then test at 23 +/- 2 C)3.2.4 14 days heat age at
9、88 +/- 1 C 2.8 MPa3.2.5 14 days humidity at 38 +/- 2 C 2.8 MPaand 95 - 100 % RH3.2.6 14 days water immersion at 2.8 MPa23 +/- 2 C3.2.7 240 h salt spray described per 2.8 MPaASTM B 1173.2.8 10 thermal cycles: 2.8 MPa16 h humidity (38 +/- 2 C and95 - 100 % RH), 4 h at-40 +/- 2 C, and 4 h at88 +/- 1 C)
10、3.3 CREEP RESISTANCE No slippage(ASTM D 1780, prepare test samplesper para 3.2, apply a 4.5 kg deadweight load to test samples andexpose to 205 +/- 1 C for 40 min.)ENGINEERING MATERIAL SPECIFICATIONESB-M11P27-APage 3 of 63.4 COLD SLAM RESISTANCE No cracking, adhesion(FLTM BV 1-2, 10 cycles of 6 slam
11、s or cohesion failureper cycle at -29 +/- 2 C, 3 samplesminimum per test condition)Test Method:. Prepare test assemblies as illustrated in Figure II. Testassemblies shall consist of FRP, CRLC, and galvanized steel 100x 250 mm reinforcement panels bonded separately to a 300 x 300mm FRP base panel. Su
12、bstrates are identified in para 5.1. Expose bonded assemblies to each post bake condition listed inpara 5.2. Condition test assemblies after post bake at 23 +/- 2 C for 4 hmin. Conduct test as outlined per FLTM BV 1-2 following steps 9, 10,and 11. Position panel in slam fixture with reinforcement fa
13、cinginward. Subject each test assembly to 10 cycles of 6 slams percycle at -29 +/- 2 C.3.5 METAL PRIMER CORROSION RESISTANCE(FLTM BI 3-1, apply primer to substratesidentified in para 5.1.2 and 5.1.3, post bakeprimer per para 5.2)There shall be no blistering, corrosion creepage, or loss of primeradhe
14、sion of more than 3 mm from the scribe line after 240 h saltspray exposure.3.6 FUNCTIONAL APPROVALMaterials being evaluated for initial approval to thisspecification shall be subjected to a production trial. Functionaltrail results should be available to Design and Materialsengineering prior to mate
15、rial approval and release.3.7 SUPPLIERS RESPONSIBILITYAll materials supplied to this specification must be equivalent inall characteristics to the material upon which approval wasoriginally granted.Prior to making any changes in the properties, composition,construction, color, processing, or labelin
16、g of the materialoriginally approved under this specification, whether or not suchchanges affect the materials ability to meet the specificationrequirements, the Supplier shall notify Purchasing, Toxicology, andthe affected Materials Engineering activity of the proposed changesand obtain the written
17、 approval of the Materials Engineeringactivity. Test data, test samples, and a new code identificationare to be submitted with the request.ENGINEERING MATERIAL SPECIFICATIONESB-M11P27-APage 4 of 6Substance restrictions imposed by law, regulations, or Ford applyto the materials addressed by this docu
18、ment. The restrictions aredefined in Engineering Material Specification WSS-M99P9999-A1,unless a different suffix (e.g., A2 or A3) is specified on theengineering document for the application.4. APPROVAL OF MATERIALSMaterials defined by this specification must have prior approval by theresponsible Ma
19、terials Engineering activity. Suppliers desiring approvalof their materials shall first obtain an expression of interest from theaffected Purchasing, Design, and Materials engineering activity. Uponrequest, the Supplier shall submit to the affected Materials Engineeringactivity its own laboratory re
20、port to the specification (test results,not nominal values), the material designation and code number and testspecimens for Ford evaluation. Upon approval, the material will be addedto the Engineering Material Approved Source List.5. GENERAL INFORMATIONThe material data included herein is for inform
21、ation only and is not arequirement for the supplier.5.1 SUBSTRATES5.1.1 Fiberglass Reinforced Polyester (FRP) as specified by Bodyand Chassis Engineering office: Nominal 2.5 mm thickness -surface prepared in accordance to adhesives suppliersrecommendation.5.1.2 CRLC Steel meeting ESB-M1A250-A: Nomin
22、al 1.5 mm thickness- surface zinc phosphate treated per ESB-M3P1-A and primedin accordance to adhesives suppliers recommendation.5.1.3 Galvanized Steel meeting ESB-M1A250-A3 (G90 hot dipped):Nominal 1.5 mm thickness - surface zinc phosphate treatedper ESB-M3P1-A and primed in accordance to adhesives
23、suppliers recommendation.5.2 PROCESS BAKE SCHEDULES (POST BAKES)5.2.1 Minimum bake schedule after 138 +/- 2 C for 30 min,production bonding: cool to room temperature,135 +/- 2 C for 15 min.5.2.2 Maximum bake schedule after 138 +/- 2 C for 30 min,production bonding: cool to room temperature,205 +/- 2
24、 C for 40 min.5.3 The supplier shall provide, in addition to supporting test data,detailed information that accurately identifies all materials andprocessing conditions. A suggested format follows:1. Part Identification:Part Supplier:Part I.D.:ENGINEERING MATERIAL SPECIFICATIONESB-M11P27-APage 5 of
25、62. Substrate Identification:Substrate:Ford Spec. No:Substrate Supplier:Substrate I.D.:Thickness:Surface Preparation:3. Adhesive Identification:Adhesive Type:Ford Spec. No.:Adhesive Supplier:Adhesive I.D.:4. Adhesion Primer Identification:Primer Type:Ford Spec. No:Primer Supplier:Primer I.D.:5. Process Information:Adhesive bondline thickness:Adhesive mix ratio:Adhesive open time:Adhesive cure time and temperature:Primer application procedure:In-plant process environments:ENGINEERING MATERIAL SPECIFICATIONESB-M11P27-APage 6 of 6
