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 entirelyvoluntary, and its applicability and suitability for any particular use, including any patent infringement arising therefro
2、m, 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) 776-0243TO PLACE A DOCUMENT
3、 ORDER; (724) 776-4970 FAX: (724) 776-0790SAE WEB ADDRESS http:/www.sae.orgCopyright 1989 Society of Automotive Engineers, Inc.All rights reserved. Printed in U.S.A.SURFACEVEHICLE400 Commonwealth Drive, Warrendale, PA 15096-0001RECOMMENDEDPRACTICESubmitted for recognition as an American National Sta
4、ndardJ1847ISSUEDJUN89Issued 1989-06ABRASION RESISTANCE TESTINGVEHICLE EXTERIOR GRAPHICS AND PIN STRIPINGForewordThis Document has not changed other than to put it into the new SAE Technical Standards BoardFormat.This recommended practice has been developed by the SAE Graphics Task Force of the Decor
5、ative Tapes andMolding Subcommittee of the SAE Nonmetallic Materials Committee. The Decorative Tape and MoldingSubcommittee was formed in 1984. The objectives of the committee are to develop SAE Standards,Recommended Practices, and Information Reports relative to automotive applications of decorativ
6、e tapes andmoldings.1. ScopeThis SAE Recommended Practice applies to the abrasion resistance testing of decorative tapes,graphics, and pin striping. It may also have relevance to certain vehicle labels and plastic wood grain film.The resistance to abrasive damage is judged qualitatively by its effec
7、t on the legibility, pattern, and color of thegraphic marking.This recommended practice is intended as a guide toward standard practice but may be subject to frequentchange to keep pace with experience and technical advances. This should be kept in mind when consideringthe use of this recommended pr
8、actice.1.1 PurposeThe purpose of this recommended practice is to establish a uniform practice for testing theabrasion resistance of decorative tapes and moldings.2. ReferencesThere are no referenced publications specified herein.3. Significance and UseThe plastic decorative tapes and graphic marking
9、 films are subject to the abrasiveforces of wiping, cleaning, automatic washes, and various exterior environments.4. Apparatus4.1 AbraderA Teledyne Taber Abraser, Model 174, or its equivalent, complete with vacuum accessory. Theabraser should be capable of using “Calibrase“ type abrasive wheels unde
10、r 250, 500, and 1000 g loads.4.2 Abrasive Wheels“Calibrase“ brand, grade CS-17 wheels as supplied by Teledyne Taber.4.3 Resurfacing Pads150 grit silicon carbide sand paper or equivalent, Teledyne Taber part number S-11.SAE J1847 Issued JUN89-2-4.4 Test PanelA clean cold rolled steel panel, 102 mm (4
11、 in) square. A 6.0 mm (1/4 in) hole is centrally locatedin the panel. The panel thickness should be approximately 1.0 mm (0.04 in). The Teledyne Taber catalognumber for such panels is S-16.5. Test SamplesThe test specimens should be of sufficient size to cover the entire surface of the test panel.Wh
12、en the specimen size is too small to cover an entire panel, this should be noted and the material should bemounted to maintain a contiguous test surface.6. Conditioning6.1 The test materials should be conditioned at 23 C 2 (73.4 F 3.6) and 50% 5 relative humidity for not lessthan 40 h prior to testi
13、ng.6.2 The abrasion testing should be conducted under standard laboratory conditions as previously outlined.7. Procedure7.1 The test material should be mounted on the steel test panel in a manner that insures a smooth even applicationof the film. There should be no entrapped air dirt or wrinkles, wh
14、ich can interfere with the even abrasion of thetest surface. Use a separate test panel for each abrasion test.7.2 Attach the pair of CS-17 wheels, but do not handle them by their abrasive surfaces. Attach the weights toproduce a 500 g load on the panel surface. The proper weighting requires the use
15、of counterweights tobalance the weight of the wheels. Used wheels can be used for this purpose. Mount a refacing pad on theabraser turntable.7.2.1 The vacuum cleaner attachment should be used to remove residue from the refacing pad or test panel. Thevacuum nozzle height should be adjusted to within
16、0.8 to 1.6 mm (1/32 to 1/16 in) of the surface.Set the vacuum to a setting of 80 or higher. The vacuum is used only during the refacing process and notduring actual testing.7.2.2 New wheels should be refaced for 100 cycles or until a uniform surface is achieved, whichever is greater.Reface previousl
17、y used wheels for 25 cycles. Reface the wheels for 25 cycles before abrading each testsample. After refacing, brush any residue from the wheels; however, be certain not to touch the surface ofthe refaced wheels.7.2.3 Discard the refacing pad after using once.7.3 Mount the test panel on the turntable
18、; lower the abrasive wheels carefully onto the test surface. Start theabraser. Expose the test panel to abrasion for the number of cycles specified or until the specified end point isreached. Remove any residue from the test panels with a soft brush. Label each test panel on the film surfacewith the
19、 number of cycles to which it was exposed. Reface the wheels between tests in order to removeabraded materials that collect during the test.7.4 The failure definition is left to the discretion of the tester or specifier. Failures may be determined byappearance after testing to a specified number of
20、cycles. A loss in legibility or wear through to a secondsurface can be considered a failure point. Abrasion resistance can also be measured by the weight loss of thesample after testing or as the number of abrasion cycles until initial wear through.PREPARED BY THE SAE DECORATIVE TAPES AND MOLDINGS C
21、OMMITTEESAE J1847 Issued JUN89RationalePreviously, manufacturers have experienced difficulty in testing the abrasion resistance ofdecorative film and graphics. While there has been wide acceptance of the rotary tested equipped withweighted abrasive wheels, the major problem has been test consistency
22、. Consequently, materialperformance and quality checks based on these tests were not dependable. Comparisons betweenlaboratories varied considerably. A better defined and more consistent test method was required toeliminate these differences.A study of equipment and methodology variables was conduct
23、ed. As a result of this study, a refined,recommended test practice has been developed. Use of this test method will reduce test variance.Relationship of SAE Standard to ISO StandardNot applicable.ApplicationThe purpose of this recommended practice is to provide a consistent method for determining th
24、eabrasion resistance of decorative tapes, films, and graphics.This document outlines the specific procedure, required equipment, and controlled conditions needed toprovide reproducible abrasion resistance testing of decorative tapes and films.Reference SectionThere are no referenced publications specified herein.Developed by the SAE Graphics Task ForceSponsored by the SAE Decorative Tapes and Moldings Committee
