SAE J2375-1997 The Selection of Adhesives for the Attachment of Exterior Aftermarket Accessories.pdf
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1、SAE Technical Standards Board Rules provide that: “This report is published by SAE to advance the state of technical and engineering sciences. The use of this report is entirely voluntary, and its applicability and suitability for any particular use, including any patent infringement arising therefr
2、om, is the sole responsibility of the user.” SAE reviews each technical report at least every five years at which time it may be reaffirmed, revised, or cancelled. SAE invites your written comments and suggestions. QUESTIONS REGARDING THIS DOCUMENT: (724) 772-8512 FAX: (724) 776-0243 TO PLACE A DOCU
3、MENT ORDER; (724) 776-4970 FAX: (724) 776-0790 SAE WEB ADDRESS http:/www.sae.org Copyright 1998 Society of Automotive Engineers, Inc. All rights reserved.Printed in U.S.A. SURFACE VEHICLE 400 Commonwealth Drive, Warrendale, PA 15096-0001 RECOMMENDED PRACTICE J2375 ISSUED AUG1997 Issued1997-08 The Se
4、lection of Adhesives for the Attachment of Exterior Aftermarket Accessories ForewordThis Document suggests materials and procedures for obtaining a good bond between two surfaces. It does not address or guarantee adequate strength, or the performance of the bond, for the intended purpose of the bond
5、ed parts. 1.ScopeThe scope of this SAE Recommended Practice is to provide a mechanism for the proper surface preparation and selection of adhesive for the attachment of exterior aftermarket accessories. 1.1PurposeTo provide the aftermarket with guidelines for the selection of adhesives to attach var
6、ious aftermarket components to the exterior of the automobile body. Covered in this document is also the proper preparation of the surfaces to be adhered. 1.2Field of ApplicationThis document will find application in the body repair shop, body customizing shop, car dealer preparation department, and
7、 the do-it-yourself enthusiast. 2.References 2.1Applicable PublicationThe following publication forms a part of the specification to the extent specified herein. Unless otherwise indicated the latest revision of SAE publications shall apply. 2.1.1SAE PUBLICATIONAvailable from SAE, 400 Commonwealth D
8、rive, Warrendale, PA 15096-0001. SAE J1344Marking of Plastic Parts 3.Identification of the Various Accessories for the Body Exterior 3.1There are a variety of components that are adhered to the exterior of the automobile. Each one serves either a decorative or a functional purpose (or both) that is
9、desired for the automobile body. SAE J2375 Issued AUG1997 -2- 3.2The following is a listing of aftermarket components for attachment to the exterior body of an automobile or truck: Body Side Molding Deflectors, Bug Deflectors, Sun, Rear Window Pick-up and Car Deflectors, Sunroof Wind (acrylic) Door
10、Edge Guards Grills Headlamp Covers Lock and Keyhole Anti-Chip Covers Logos, Emblems, and Medallions, Three-Dimensional Luggage and Deck Rack Center Strips Mirror Covers, Side-View Protectors, Side Cap for Pick-Ups Rocker Panel Claddings and Moldings Rocker Panel, PVC “Chrome” Moldings Rocker Panel,
11、Stainless Steel Moldings Roof Drip Moldings Spoilers, Rear, on Pick-Up Tailgates Spoilers/Wings (supplemental to mechanical attachment) Step Shield Protectors Sun Visors, Acrylic Tail Light Covers Vent Visors (acrylic and stainless) Vents, Decorative Wheel Covers, Decorative Emblems Wheel Opening Mo
12、lding Wind Deflectors, Rear (acrylic-style) 4.Identification of the Various Surfaces to be Adhered 4.1Surfaces to be adhered can vary depending upon the material used to manufacture the aftermarket component. The exterior body surface of the automobile will be either bare metal (steel or aluminum),
13、bare sheet-molded compound, or the paint used on these surfaces (either an acrylic, epoxy, polyester, polyurethane, or combinations of these.) 4.2The aftermarket components usually are made from one of the following types of materials listed in Table 1. For plastic parts, the approved marking, or sy
14、mbol, for the plastic is shown with the type of plastic. 5.Preparation of the Surface to be Adhered 5.1Two-Part AdhesivesAll of the surfaces to be bonded should be cleaned thoroughly with a premium grade of solvent (white spirits or alcohol) or degreaser. No recycled products should be used as they
15、tend to leave a residue on the cleaned surface after they evaporate. The surfaces of the parts to be bonded must be dry and free of dust and grease before bonding. If the parts are polyurethane and not primed, care must be taken to ensure that the manufacturer has removed the mold release. If this c
16、an not be determined, then clean all surfaces with soap and water first. Let dry. Roughen, or scuff, the bonding surfaces along the bond line, then wipe down all surfaces with a plastic prep or plastic adhesion promoter. Mark exact outline of parts to be glued in the correct position on the vehicle
17、with a water-soluble felt pen. This marking is used to align parts when bonding them later. SAE J2375 Issued AUG1997 -3- It may be necessary to seal or prime some substrates prior to bonding. a.Most porous or fiber materials will require sealing to provide a unified surface. Follow the adhesive manu
18、facturers recommendations for the appropriate sealer to use. b.Some materials (e.g., metals, vinyl) will require priming or coating to prevent interaction between adhesives and substrates. Follow the adhesive manufacturers recommendations for the appropriate coating to use. Mix adhesive by weight, p
19、roper mixing should be performed with scales to insure correct curing. To ensure proper weights and mixing of the adhesive and catalyst, use of an application system, i.e., a two-barrel system that mixes the adhesive and catalyst at the application tip, is recommended. Apply the adhesive with a spat
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