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    SAE AMS 3278A-2008 Sealing and Coating Compound Polyurethane (PUR) Fuel Resistant High Tensile Strength Elongation For Integral Fuel Tanks Fuel Cavities General Purpose《密封和涂料混合物.pdf

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    SAE AMS 3278A-2008 Sealing and Coating Compound Polyurethane (PUR) Fuel Resistant High Tensile Strength Elongation For Integral Fuel Tanks Fuel Cavities General Purpose《密封和涂料混合物.pdf

    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 theref

    2、rom, 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. Copyright 2008 SAE International All rights reserved. No part of this publication ma

    3、y 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: 724-776-4970 (outside USA)

    4、Fax: 724-776-0790 Email: CustomerServicesae.org SAE WEB ADDRESS: http:/www.sae.org AMS 3278A AEROSPACE MATERIAL SPECIFICATION Issued 2004-07 Revised 2008-01 Superseding AMS 3278 Sealing and Coating Compound: Polyurethane (PUR) Fuel Resistant High Tensile Strength / Elongation For Integral Fuel Tanks

    5、 / Fuel Cavities / General Purpose RATIONALE AMS 3278A results from a Five Year Review and update of this specification. 1. SCOPE 1.1 Form This specification covers polyurethane (PUR) in the form of two-component sealing compounds. 1.2 Application This product has been used typically for contact wit

    6、h fuels, but usage is not limited to such applications. Each application should be considered separately. This polyurethane (PUR) has a service temperature range of -65 to +250 F (-54 to 121 C) with a continuous fuel service temperature range of -65 to +160 F (-54 to +71 C). It may be used for fayin

    7、g surface sealing, wet-installation of fasteners, overcoat of fasteners, sealing joints and seams and, in some cases, as a non-structural adhesive. NOTE: The use of an adhesion promoter shall be required to obtain proper adhesion. 1.3 Classification 1.3.1 Type I - For integral fuel tanks and fuel ap

    8、plications only. 1.3.1.1 Class B - For application by extrusion gun or spatula. Available in the following application times: B-1/4 (solvent-free sealing compound) 1.3.2 Type II - For integral fuel tanks, fuel cavities, and general purpose applications 1.3.2.1 Class A - For application by brush or s

    9、pray. Available in the following application times: A-4 Copyright SAE International Provided by IHS under license with SAENot for ResaleNo reproduction or networking permitted without license from IHS-,-,-SAE AMS 3278A - 2 - 1.3.2.2 Class B - For application by extrusion gun or spatula. Available in

    10、 the following application times: B-1/2 (solvent-borne sealing compound) B-1 (solvent-borne sealing compound) 1.4 Precautions 1.4.1 Safety - Hazardous Materials Shall be in accordance with AS5502 (1.1). 2. APPLICABLE DOCUMENTS Shall be in accordance with AS5502 (2.). 2.1 SAE Publications Available f

    11、rom SAE International, 400 Commonwealth Drive, Warrendale, PA 15096-0001, Tel: 877-606-7323 (inside USA and Canada) or 724-776-4970 (outside USA), www.sae.org. AMS 2471 Anodic Treatment of Aluminum Alloys, Sulfuric Acid Process, Undyed Coating AMS 3276 Sealing Compound, Integral Fuel Tanks and Gener

    12、al Purpose, Intermittent Use to 360 F (182 C) AMS 3277 Sealing Compound, Polythioether Rubber, Fuel Resistant, Fast Curing, Intermittent Use to 400 F (204 C) AMS 4045 Aluminum Alloy Sheet and Plate, 5.6Zn - 2.5Mg - 1.6Cu - 0.23Cr (7075; -T6 Sheet/-T651 Plate), Solution and Precipitation Heat Treated

    13、 AMS 4911 Titanium Sheet, Strip and Plate, 6Al 4V, Annealed AMS 5516 Steel, Corrosion Resistant, Sheet, Strip, and Plate, 18Cr - 9.0Ni, (SAE 30302) Solution Heat Treated AMS-S-8802 Sealing Compound, Temperature Resistant, Integral Fuel Tanks and Fuel Cell Cavities, High Adhesion AMS-C-27725 Type 2 C

    14、oating, Corrosion Preventive, for Aircraft Integral Fuel Tanks AS5127 Methods for Testing Aerospace Sealants AS5127/1 Methods for Testing Aerospace Sealants, Two-Component Synthetic Rubber Compounds AS5502 Standard Requirements for Aerospace Sealants 2.2 ASTM Publications Available from ASTM Interna

    15、tional, 100 Barr Harbor Drive, P.O. Box C700, West Conshohocken, PA 19428-2959, Tel: 610-832-9585, www.astm.org. ASTM D 1319 Standard Test Method for Hydrocarbon Types in Liquid Petroleum Products by Fluorescent Indicator Adsorption ASTM D 2556 Standard Test Method for Apparent Viscosity of Adhesive

    16、s Having Shear-Rate-Dependent Flow Properties 2.3 U.S. Government Publications Available from the Document Automation and Production Service (DAPS), Building 4/D, 700 Robbins Avenue, Philadelphia, PA 19111-5094, Tel: 215-697-6257, http:/assist.daps.dla.mil/quicksearch/. MIL-PRF-23377 Primer Coatings

    17、: Epoxy, High Solids MIL-DTL-81706 Chemical Conversion Materials for Coating Aluminum and Aluminum Alloys MIL-DTL-83133 Turbine Fuels, Aviation, Kerosene Types, NATO F-34 (JP-8), NATO F-35, and JP-8+100 Copyright SAE International Provided by IHS under license with SAENot for ResaleNo reproduction o

    18、r networking permitted without license from IHS-,-,-SAE AMS 3278A - 3 - 2.4 PRI Publications Available from Performance Research Institute, 161 Thorn Hill Road, Warrendale, PA 15086-7257, Tel: 724-772-1616, www.pri-network.org. PD 2000 Procedures for an Industry Qualified Product Management Process

    19、PRI-QPL-AMS-S-8802 Products Qualified Under AMS-S-8802 PRI-QPL-AMS 3276 Products Qualified Under AMS 3276 PRI-QPL-AMS 3277 Products Qualified Under AMS 3277 PRI-QPL-AMS 3278 Products Qualified Under AMS 3278 PRI-QPL-AMS-C-27725 Products Qualified Under AMS-C-27725 3. TECHNICAL REQUIREMENTS 3.1 Mater

    20、ial 3.1.1 Basic Ingredient Synthetic rubber of the polyurethane type. 3.1.2 Color Not red or pink in color. The curing agent shall possess sufficient color contrast to the base compound to permit easy identification of an unmixed or incompletely mixed sealing compound 3.1.3 Texture The base compound

    21、 and the curing agent shall be of uniform blend and free of excessive air, skins, lumps and gelled or coarse particles. There shall be no separation of ingredients that cannot be easily redispersed. 3.1.4 Cure Curing agent shall be added to the base compound to cure at room temperature. Higher tempe

    22、ratures may be used to accelerate the cure. 3.1.5 Exclusions Lead compounds or leachable chromate compounds are prohibited. 3.1.6 Shelf Life Shelf life shall be a minimum of 9 months from the date of packaging. Material may be retested for shelf life extension (See 4.3.3). 3.2 Properties The sealing

    23、 compound, when mixed in accordance with the manufacturers instructions and cured as specified in 4.4.4.1, shall conform to the requirements shown in Table 1, determined in accordance with the specified test methods. Copyright SAE International Provided by IHS under license with SAENot for ResaleNo

    24、reproduction or networking permitted without license from IHS-,-,-SAE AMS 3278A - 4 - TABLE 1 - PROPERTIES (APPLICATION, PERFORMANCE AND STORAGE STABILITY) Paragraph Property Requirement Test Method 3.2.1 Properties - Application 3.2.1.1 Appearance 3.1.3 Visual 3.2.1.2 Nonvolatile Content by weight,

    25、 min AS5127/1 (5.1) 3.2.1.2.1 Class A-4 55% 3.2.1.2.2 Classes B-1 dimensions and properties in SI units and the Celsius temperatures are shown as the approximate equivalents of the primary units and are presented only for information. PREPARED BY AMS COMMITTEE “G-9” Copyright SAE International Provided by IHS under license with SAENot for ResaleNo reproduction or networking permitted without license from IHS-,-,-


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