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 there
2、from, is the sole responsibility of the user.” SAE reviews each technical report at least every five years at which time it may be revised, reaffirmed, stabilized, or cancelled. SAE invites your written comments and suggestions. Copyright 2017 SAE International All rights reserved. No part of this p
3、ublication may be reproduced, stored in a retrieval system or transmitted, in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without the prior written permission of SAE. TO PLACE A DOCUMENT ORDER: Tel: 877-606-7323 (inside USA and Canada) Tel: +1 724-776-497
4、0 (outside USA) Fax: 724-776-0790 Email: CustomerServicesae.org SAE WEB ADDRESS: http:/www.sae.org SAE values your input. To provide feedback on this Technical Report, please visit http:/standards.sae.org/AMS3721 AEROSPACE MATERIAL SPECIFICATION AMS3721 Issued 2017-10 Tape for Organic Coatings Adhes
5、ion Testing RATIONALE This is a new material specification which establishes requirements for a tape to be used to perform organic coatings adhesion testing. 1. SCOPE 1.1 Form This specification establishes requirements for a tape that is used to perform organic coatings adhesion testing. 1.2 Applic
6、ation The tapes covered by this specification are typically applied to organic coatings to test for adhesion. The tape is used in conjunction with coating material specifications and tape adhesion test methods (e.g., ASTM D3359 and FED-STD-141 Method 6301). 1.3 Safety - Hazardous Materials While the
7、 materials, methods, applications, and processes described or referenced in this specification may involve the use of hazardous materials, this specification does not address the hazards which may be involved in such use. It is the sole responsibility of the user to ensure familiarity with the safe
8、and proper use of any hazardous materials and to take necessary precautionary measures to ensure the health and safety of all personnel involved. 2. APPLICABLE DOCUMENTS The issue of the following documents in effect on the date of the purchase order forms a part of this specification to the extent
9、specified herein. The supplier may work to a subsequent revision of a document unless a specific document issue is specified. When the referenced document has been cancelled and no superseding document has been specified, the last published issue of that document shall apply. SAE INTERNATIONAL AMS37
10、21 Page 2 of 8 2.1 SAE Publications Available from SAE International, 400 Commonwealth Drive, Warrendale, PA 15096-0001, Tel: 877-606-7323 (inside USA and Canada) or +1 724-776-4970 (outside USA), www.sae.org. AMS3167 Solvents, Wipe for Cleaning Prior to Application of Primer and Top Coat Materials,
11、 or Sealing Compounds AMS3819 Cloths, Cleaning For Aircraft Primary and Secondary Structural Surfaces AS9100 Quality Management Systems - Requirements for Aviation, Space, and Defense Organizations 2.2 ASTM Publications Available from ASTM International, 100 Barr Harbor Drive, P.O. Box C700, West Co
12、nshohocken, PA 19428-2959, Tel: 610-832-9585, www.astm.org. ASTM D1974/D1974M Standard Practice for Methods of Closing, Sealing, and Reinforcing Fiberboard Boxes ASTM D3330/D3330M Standard Test Method for Peel Adhesion of Pressure-Sensitive Tape ASTM D3359 Standard Test Methods for Measuring Adhesio
13、n by Tape Test ASTM D3652/D3652M Standard Test Method for Thickness of Pressure-Sensitive Tapes ASTM D3759/D3759M Standard Test Method for Breaking Strength and Elongation of Pressure-Sensitive Tape ASTM D3951 Standard Practice for Commercial Packaging 2.2.1 U.S. Government Publications Copies of th
14、ese documents are available online at http:/quicksearch.dla.mil. FED-STD-141 Paint, Varnish, Lacquer and Related Materials: Methods of Inspection, Sampling and Testing 2.3 PRI Publications Available from Performance Review Institute, 161 Thorn Hill Road, Warrendale, PA 15086-7527, Tel: 724-772-1616,
15、 www.pri-network.org. PD2000 Governance and Administration of an Industry Managed Product Qualification Program PD2001 Manufacturer Request for Product Approval and Qualification Process PRI QPL-AMS3721 Products Qualified Under AMS3721 2.4 ISO/ANSI Accredited Publications Copies of these documents a
16、re available online at http:/webstore.ansi.org/. ISO/IEC 17025 General Requirements for the Competence of Testing and Calibration Laboratories ISO 9001 Quality Management Systems Requirements SAE INTERNATIONAL AMS3721 Page 3 of 8 3. TECHNICAL REQUIREMENTS 3.1 Materials The tape shall consist of a pa
17、per backing with an applied adhesive that provides instant adhesion to a wide variety of surfaces. The paper backing shall exhibit sufficient tensile strength to resist breakage. 3.1.1 Toxicity The tape shall have no adverse effect on the health of personnel when used for its intended purpose in acc
18、ordance with manufacturers instructions and with appropriate handling procedures and precautions. 3.2 Quality The tape, as received by purchaser, shall be uniform in quality and condition, free from foreign materials, and free from imperfections detrimental to the usage of the tape. 3.3 Properties T
19、he tape, when used in accordance with the manufacturers instructions, shall conform to the requirements shown in Table 1, determined in accordance with the specified test methods. Table 1 - Properties Paragraph Property Requirement Test Method 3.3.1 Adhesion 60 ozf/in (0.66 N/mm) to 120 ozf/in (1.31
20、 N/mm) adhesion to stainless steel ASTM D3330/D3330M Method A 3.3.2 Tensile Strength and Elongation, min. 41 lbf/in (7.18 N/mm) and 2% ASTM D3759/D3759M 3.3.3 Thickness 0.006 inch 0.001 inch (0.15 mm 0.025 mm) ASTM D3652/D3652M 3.3.4 Adhesive Transfer No adhesive transfer 4.7.3 3.3.5 Storage Stabili
21、ty 3.3.1 and 3.3.2 are tested after the specified shelf life (see 3.4) 3.4 Shelf Life Shelf life for the tape shall be specified by the manufacturer for a minimum of 12 months from the date of manufacture when stored at 70 F 10 F (21 C 6 C) and 50% 10% relative humidity. Purchased material may be re
22、tested for shelf life extension using 4.4.3 as a recommended guideline. 4. QUALITY ASSURANCE PROVISIONS 4.1 Qualification of Tape Qualification is the process by which material properties of a tape are verified through testing at a accredited laboratory (see 4.4.1) prior to inclusion on a qualified
23、products list (QPL). All tapes sold to this specification shall be listed, or approved for listing, on an approved QPL in accordance with PD2000 and PD2001. The manufacturers specified shelf life shall be included in the listing. The tape may be qualified on an interim basis until the Storage Stabil
24、ity requirement (3.3.5) is successfully completed, at which point full qualification is granted. SAE INTERNATIONAL AMS3721 Page 4 of 8 4.1.1 Qualified Products Lists PRI QPL-AMS3721 is the approved QPL managed by the Performance Review Institute (PRI), 161 Thorn Hill Road, Warrendale, PA 15086-7527,
25、 phone (724) 772-1616, fax (724) 772-1699. Information pertaining to qualification of tape may be obtained from PRI. 4.1.2 Contract Awards Awards will be made only for tapes which are, prior to the award of contract, QPL approved. 4.2 Quality System of Manufacturer Before submitting a tape for quali
26、fication to this specification for the purpose of being listed on the QPL, the manufacturer shall have a quality system in place which holds a third-party accreditation to ISO 9001 or AS9100. 4.3 Responsibility for Testing The manufacturer of the tape shall supply all samples needed and shall be res
27、ponsible for the performance of all required tests of this specification. 4.4 Classification of Tests 4.4.1 Qualification Tests All technical requirements of this specification (see 3.) are qualification requirements. Conformance to these requirements shall be established prior to QPL approval. All
28、qualification testing (see 3.3) shall be carried out by a laboratory which is independent of the manufacturer and is accredited per ISO/IEC 17025 with a Scope of Accreditation that is approved by the G-8 Qualified Products Group (QPG). 4.4.2 Acceptance Tests The technical requirements shown in Table
29、 2 are acceptance tests. Conformance to these requirements shall be established on each batch of tape. Unless otherwise specified herein, acceptance testing may be carried out by a laboratory of the manufacturers choosing. Table 2 - Acceptance tests Paragraph Property Test Method 3.3.1 Adhesion ASTM
30、 D3330/D3330M Method A 3.3.2 Tensile Strength and Elongation ASTM D3759/D3759M 4.4.3 Shelf Life Extension 4.4.3.1 Time and Limits of Shelf Life Extensions The recommended procedure to extend the shelf life of a batch of tape for three months is to perform and pass the Shelf Life Tests in Table 3 at
31、the end of the tapes original shelf life. Up to three total extensions are permissible. SAE INTERNATIONAL AMS3721 Page 5 of 8 4.4.3.2 Shelf Life Tests The recommended tests to be conducted for shelf life extensions are listed in Table 3. Table 3 Shelf life tests Paragraph Property Test Method 3.3.1
32、Adhesion ASTM D3330/D3330M Method A 3.3.2 Tensile Strength and Elongation ASTM D3759/D3759M 4.5 Sampling and Testing Shall be as follows: 4.5.1 Qualification Tests Samples shall consist of one complete roll of tape. Samples shall be identified as follows and forwarded to the laboratory responsible f
33、or testing: TAPE AMS3721 MANUFACTURERS IDENTIFICATION NAME OF MANUFACTURER BATCH NUMBER DATE OF MANUFACTURE SUBMITTED BY (NAME) (DATE) FOR QUALIFICATION TESTS IN ACCORDANCE WITH AMS3721 4.5.2 Acceptance Tests and Shelf Life Extension Tests Samples shall consist of one roll of tape taken at random fr
34、om each batch to perform the required tests. A batch shall be the quantity of material manufactured at one time. 4.6 Approval, Reapproved, and Recertification Approval of qualification test results, being reapproved, and recertification of qualification for QPL listing shall be in accordance with PD
35、2000 and PD2001, unless otherwise specified herein. Data shall be reviewed by the G-8 QPG. 4.6.1 Approval Manufacturer shall submit qualification test data to the PRI for approval by the G-8 QPG. Qualification will be valid until such time that the conditions in 4.6.2 or 4.6.3 occur, or unless quali
36、fication is withdrawn per the conditions set forth in PD2000 and PD2001. 4.6.2 Reapproved Manufacturer shall use ingredients, manufacturing procedures, processes, and methods of inspection on production tape that is the same as those used on the qualification sample. If necessary to make any change
37、in product formulation, raw materials, basic methods of processing, or plant site, manufacturer shall submit to be reapproved by the G-8 QPG by submitting a statement of the proposed changes in ingredients and/or processing and, when requested, sample tape. Production tape made by the revised proced
38、ure shall not be shipped prior to receipt being reapproved. 4.6.2.1 A review of the submitted changes may result in being reapproved without testing, reapproved after partial requalification testing, or reapproved after full requalification testing. SAE INTERNATIONAL AMS3721 Page 6 of 8 4.6.3 Recert
39、ification Recertification of qualification is required every five years. Recertification consists of a letter certifying that there have been no changes in the material ingredients, manufacturing processes, or site of production since qualification, and that the tape shall meets all of the requireme
40、nts of this specification. In addition, a test report shall be provided by the manufacturer showing compliance with all of the qualification tests per 4.4.1. 4.7 Test Methods Testing shall be as follows: 4.7.1 Standard Test Conditions Standard laboratory test conditions for preparation and testing o
41、f specimens shall be 77 F 5 F (25 C 3 C). Unless otherwise specified herein, all test specimens shall be tested under these conditions throughout the test methods. 4.7.2 Standard Tolerances Unless otherwise specified herein, standard tolerances shown in Table 4 shall be applied throughout the test m
42、ethods. Table 4 - Standard tolerances Measurement Units Tolerance Temperature Day Hour Minute Inches (mm) 2 F (1 C) 2 hours 5 minutes 10 seconds 0.010 inch (0.25 mm) 4.7.3 Test Procedure Adhesive Transfer A clear glass panel, of sufficient dimensions to accept the application of three separate 6.0 i
43、nch lengths of tape (e.g., 3 x 8 x 0.125 inch), shall be cleaned by scrubbing the surface with a clean AMS3819 Grade A cloth with solvent conforming to AMS3167. Repeat cleaning panel surface by scrubbing the surface with a clean AMS3819 Grade A cloth heavily dampened, but not dripping, with solvent
44、conforming to AMS3167. Immediately wipe the surface dry with clean AMS3819 Grade A cloth prior to solvent evaporation. Repeat this cleaning procedure until the dry AMS3819 cloth used for wiping off the solvent displays no visible contamination and the surface is free of smears, foreign deposits or o
45、ther surface marks. Do not allow the solvent to evaporate from the surface. Allow the panel to dry for an additional 15 minutes. A minimum of three tape samples shall be taken from one roll of tape. Prior to the selection of these samples, remove two laps of tape and discard. A 6.0 inch length of ta
46、pe shall be applied to the glass surfaces with firm hand pressure. Within 90 seconds 30 seconds of application, remove the tape by seizing the free end and pulling it off rapidly (not jerked) back upon itself at as close to an angle of 180 as possible. If the tape tears, the tape may be peeled at a
47、slower rate to avoid tearing. Repeat on different areas of the panel with the second and third tape samples. Evaluate the panel for no adhesive transfer per 3.3.4. If no adhesive remains on the glass panel, the test passes the specification requirement. If adhesive remains on the glass, the glass sh
48、all be cleaned with AMS3167 solvent to remove, if possible, the remaining adhesive. After cleaning, the panel shall be re-evaluated for no adhesive transfer per 3.3.4. If no adhesive remains on the glass panel, the test passes the specification requirement. SAE INTERNATIONAL AMS3721 Page 7 of 8 4.8
49、Reports The supplier of tape shall furnish with each shipment a report showing the results of tests to determine conformance to the acceptance test requirements (see 4.4.2) and stating that the tape conforms to the other technical requirements. This report shall include AMS3721, manufacturers designation, batch number, date of manufacture, the manufacturer specified shelf life, and the pu
