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.Copyright 2005 SAE InternationalAll rights reserved. No part of this publication may be
3、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)Fax: 724-
4、776-0790Email: custsvcsae.orgSAE WEB ADDRESS: http:/www.sae.orgAEROSPACE MATERIAL SPECIFICATIONAMS-A-8576Issued SEP 1997ReaffirmedAdhesive, Acrylic Base, for Acrylic PlasticNOTICEThis document has been taken directly from U.S. Military Specification MIL-A-8576C and contains only minor editorial and
5、format changes required to bring it into conformance with the publishing requirements of SAE technical standards.The original Military Specification was adopted as an SAE standard under the provisions of the SAE Technical Standards Board (TSB) Rules and Regulations (TSB 001) pertaining to accelerate
6、d adoption of government specifications and standards. TSB rules provide for (a) the publication of portions of unrevised government specifications and standards without consensus voting at the SAE Committee level, (b) the use of the existing government specification or standard format, and (c) the
7、exclusion of any qualified product list (QPL) sections.1. SCOPE:1.1 Scope: This specification covers acrylic-monomer base adhesives intended for use in bonding acrylic plastics.1.2 Classification: The adhesive shall be furnished in the following types, as specified (see 6.2).Type I - Solvent typeTyp
8、e II - Non-solvent, high viscosityType III - Non-solvent, medium viscosityJUN 2005Copyright SAE International Provided by IHS under license with SAENot for ResaleNo reproduction or networking permitted without license from IHS-,-,-AMS-A-8576 SAE AMS-A-8576- 2 -2. APPLICABLE DOCUMENTS: The following
9、publications, of the issues in effect on the date of invitation for bids or request for proposal, form a part of this specification to the extent specified herein.2.1 Government Publications: Available from DODSSP, Subscription Services Desk, Building 4D, 700 Robbins Avenue, Philadelphia, PA 19111-5
10、094.PPP-B-585 Box, Wood, WireboundPPP-B-601 Box, Wood, Cleated-PlywoodPPP-B-621 Box, Wood, Nailed and Lock-CornerPPP-B-636 Box, Shipping, FiberboardPPP-B-640 Box, Fiberboard, Corrugated, Triple-WallPPP-C-96 Can, Metal, 28 Gage and LighterPPP-T-60 Tape, Packaging, WaterproofMIL-P-5425 Plastic, Sheet,
11、 Acrylic, Heat ResistantMIL-P-8184 Plastic Sheet, Acrylic, ModifiedMIL-L-10547 Liner, Case and Sheet, Overwrap, Watervaporproof or Waterproof, FlexibleMIL-STD-105 Sampling Procedures and Tables for Inspection by AttributesMIL-STD-129 Marking for Shipment and StorageCODE OF FEDERAL REGULATIONS49 CFR
12、100-178Regulations for the Transportation of Explosive and Other Dangerous Articles.2.2 National Motor Freight Traffic Association, Inc., Agent Publications: Available from the National Motor Freight Traffic Association, Tariff Order Section, 1616 P Street, N.W., Washington, DC 20036.National Motor
13、Freight Classification2.3 Uniform Classification Committee, Agent Publications: Available from the Uniform Classification Committee, Room 1106, 222 South Riverside Plaza, Chicago, IL 60606.Uniform Freight Classification RulesCopyright SAE International Provided by IHS under license with SAENot for R
14、esaleNo reproduction or networking permitted without license from IHS-,-,-AMS-A-8576 SAE AMS-A-8576- 3 -2.4 ASTM Publications: Available from ASTM, 100 Barr Harbor, West Conshohocken, PA 19428-2959.ASTM D1545 Viscosity of Transparent Liquids by Bubble Time MethodASTM D1747 Refractive Index of Viscou
15、s Materials3. REQUIREMENTS: 3.1 Materials: The adhesive shall consist of a containerized kit with individually packaged components described herein.3.1.1 Base resin: 3.1.1.1 Type I: Type I shall consist of methyl-methacrylate monomer with a suitable polymerization retarder and a suitable solvent.3.1
16、.1.2 Types II and III: Types II and III shall consist of a methyl-methacrylate monomer with a suitable polymerization retarder only.3.1.2 Promoter: Type II adhesive kits shall contain a suitable polymerization promoter compound. The promoter shall be added to the base resin and thoroughly mixed, pri
17、or to adding the catalyst.3.1.3 Catalyst: The catalyst shall be a suitable compound for all types furnished in sufficient quantity to counteract the polymerization retarder and complete the base resin polymerization.3.2 Appearance: The base resin shall be colorless and transparent. It shall not be d
18、arker than the standard specified in 4.5.1.1.3.3 Visual examination of bond: The bonded face joint, when prepared as specified in 4.5.2 shall show no cracking, internal defects, loose area, or air bubbles in more than 10 percent of the bonded area.3.4 Mechanical properties: The bonded joints shall m
19、eet the requirements of table I when tested in accordance with the applicable paragraphs of Section 4.3.5 Physical properties of base resin: The base resin shall meet the requirements of table II when tested in accordance with the applicable paragraph specified in Section 4.Copyright SAE Internation
20、al Provided by IHS under license with SAENot for ResaleNo reproduction or networking permitted without license from IHS-,-,-AMS-A-8576 SAE AMS-A-8576- 4 -Table I. Mechanical properties.PropertyRequirement 1/Type I Types II and IIIAvg Value 2/Ind. ValueMin. Avg Value 2/Ind. ValueMin.Tensile strength
21、of bondedbutt joints, psi min:Standard conditions (4.4) 1800 1500 2700 2300Heat treat 70C (158F) for:a.48 hours, tested at:Standard conditions (4.4)70C (158F)5000240040002000-b.24 hours, tested at:Standard conditions (4.4)70C (158F)-31002700230020001/ A “-” indicates not applicable to that type.2/ A
22、verage value of ten specimens.Table II. Physical properties of base resin.PropertyRequirementTestpara.Type I Type II Type IIIAs receivedIndex of refraction 25C (77F) 1.413 to 1.419 1.442 to 1.445 1.439 to 1.443 4.5.4Specific gravity 25C (77F) 1.165 to 1.185 1.03 to 1.04 1.02 to 1.04 4.5.5Viscosity 2
23、5C (77F), approx.stokes1.0 max 17.6 to 36.2 13.2 to 27.6 4.5.6After heat stabilitySpecific gravity 25C (77F) 1.16 to 1.18 - - 4.5.5Viscosity 25C (77F), approx.stokes4.0 max 17.6 to 36.2 13.2 to 27.6 4.5.6Copyright SAE International Provided by IHS under license with SAENot for ResaleNo reproduction
24、or networking permitted without license from IHS-,-,-AMS-A-8576 SAE AMS-A-8576- 5 -3.6 Condition of container after heat stability test: The containers of type I base resin, type II base resin and promoter, and type III base resin shall not break or rupture as a result of the heat stability test pro
25、cedure (see 4.5.7).3.7 Manufacturers instructions: Instructions for use of the adhesive shall be included in the marking of each container (see 5.3.1). These instructions shall include:a. Treatment of the acrylic surface prior to application of the adhesive.b. Mixing instructions, including thinning
26、 to proper viscosity if necessary, and working life of the mixed adhesive.c. Allowable temperatures during and following mixing of the adhesive.d. Application instructions, including spread method, number of coats, spread rate, film thickness and drying intervals between coats and before joining the
27、 surfaces to be bonded and the method of joining the two surfaces.e. Recommended time, temperature, and pressure for the complete curing cycle.3.8 Storage life: Type I adhesive shall have a 1 year storage life when stored in its original, unopened container at standard conditions. Types II and III s
28、hall be capable of being stored for 6 months at the same conditions. Upon completion of the storage period, the adhesive shall be in conformance with the requirements in table I and the “as received” section of table II.3.9 Workmanship: The adhesive components shall be processed in a manner that wil
29、l insure a product meeting all the requirements of this specification.Copyright SAE International Provided by IHS under license with SAENot for ResaleNo reproduction or networking permitted without license from IHS-,-,-AMS-A-8576 SAE AMS-A-8576- 6 -4. QUALITY ASSURANCE PROVISIONS: 4.1 Responsibility
30、 for inspection: Unless otherwise specified in the contract or purchase order, the contractor is responsible for the performance of all inspection requirements as specified herein. Except as otherwise specified in the contract or purchase order, the contractor may use his own or any other facilities
31、 suitable for the performance of the inspection requirements specified herein, unless disapproved by the Government. The Government reserves the right to perform any of the inspections set forth in the specification where such inspections are deemed necessary to assure supplies and services conform
32、to the prescribed requirements.4.1.1 Certificate of compliance: When certificates of compliance are submitted, the Government reserves the right to check test such items to determine the validity of the certification.4.2 Classification of inspection: The inspection requirements specified herein are
33、classified as quality conformance (see 4.3).4.3 Quality conformance: 4.3.1 Lot formation: Unless otherwise specified herein, a lot shall consist of a maximum of 500 pints, individually packed, or any lesser quantity required by contract, either individually or bulk packed, from a single production b
34、atch of base adhesive along with necessary catalyst and promoter, as required, and submitted for acceptance at the same time and place.4.3.2 Sampling for quality conformance: 4.3.2.1 For physical tests: Quality conformance test samples shall consist of two containers of adhesive selected at random f
35、rom each lot submitted for inspection. The samples shall include catalyst and promoter, when applicable. The sample shall be tested to all the requirements specified in table III. Failure of any specimen to conform with the requirements stated therein shall be cause to reject the lot represented by
36、the sample.Copyright SAE International Provided by IHS under license with SAENot for ResaleNo reproduction or networking permitted without license from IHS-,-,-AMS-A-8576 SAE AMS-A-8576- 7 -4.3.2.2 Sampling for visual inspection: A random sample of filled containers shall be selected from each lot i
37、n accordance with MIL-STD-105, Inspection Level I and Acceptable Quality Level (AQL) of 2.5 percent defective. The sample unit shall be one container. The sample selected shall be inspected to the requirements of table IV.4.3.2.3 Sampling for packaging: The lot size for purposes of this inspection s
38、hall be the number of shipping containers. The sample unit shall be one shipping container. The sample size shall be determined using Inspection Level I of MIL-STD-105. The Acceptable Quality Level shall be 2.5 percent defective. Inspection shall be in accordance with table V and section 5.Table III
39、. Quality conformance physical tests.PropertyRequirementparagraphTestparagraphAppearance 3.2 4.5.1Visual examination of bond 3.3 4.5.2Bond strength Table I 4.5.3Index of refraction Table II 4.5.4Specific gravity Table II 4.5.5Viscosity Table II 4.5.6Heat stability 3.6 4.5.7Storage stability 3.8 1/1/
40、 The supplier shall certify to this requirement (see 4.1.1).Table IV. Visual inspection.Inspection DefectAdhesive Contains foreign matter, not ofuniform appearance or consistencyUnit container Improper type, size, closureimproper fillCopyright SAE International Provided by IHS under license with SAE
41、Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-AMS-A-8576 SAE AMS-A-8576- 8 -4.4 Test conditions: Unless otherwise specified, all tests shall be conducted at a temperature of 25 1.1C(77 2F) and a relative humidity of 50 4 percent.4.5 Test methods: 4.5.1 Appearance
42、: A sample of adhesive (base resin) shall be poured from a freshly opened container into a standard Nessler tube and compared for color with an equal volume of color standard contained in a similar Nessler tube. The color comparison shall be in daylight quality illumination equal to I.C.I illuminant
43、 “C” (see 6.5).4.5.1.1 Preparation of color standard: 0.1246 grams of Chemically Pure (CP) potassium platinic chloride (K2PT Cl6) and 0.1000 gram of CP potassium cobalt chloride (CoCl2.6H2O) shall be weighed on an analytical balance and dissolved in about 75 milliliters (mls) of distilled water in a
44、 100 ml volumetric flask. Ten mls of hydrochloric acid (sp. gr. 1.19) shall be slowly added, and the solution shall be diluted to the 100 ml mark with distilled water. Five mls of this solution shall be pipetted into a 50 ml volumetric flask. Distilled water shall be added to the 50 ml mark; and thi
45、s solution shall be used as the color standard. The color standard solution is suitable for use for approximately 6 months after preparation when properly stored.4.5.2 Visual examination of bond: 4.5.2.1 Preparation of specimens for type I: Two pieces of plastic conforming to specificationMIL-P-5425
46、, each 0.125 by 1.5 by 4 inches shall be bonded face to face. The manufacturers instructions for use (see paragraph 3.7) shall be followed. However, the soaking period or time of application of the adhesive shall not exceed 15 minutes.Table V. Packaging inspection.Inspection DefectIntermediate conta
47、iner Improper separation of components, catalystcontainer not properly attached to base resincontainer, packing material omitted or wrong type. Improper closure.Packing Wrong packing specifications, weight too heavy,improper closure.Marking and instruction Marking wrong or omitted, instruction sheet
48、missing.Copyright SAE International Provided by IHS under license with SAENot for ResaleNo reproduction or networking permitted without license from IHS-,-,-AMS-A-8576 SAE AMS-A-8576- 9 -4.5.2.2 Preparation of specimens for type II and type III: Two pieces of plastic conforming toMIL-P-8184, each 0.
49、250 by 1.5 by 4 inches, shall be bonded face to face for type II and type III. The manufacturers instructions for use (see 3.7) shall be followed. No soaking period shall be permitted.4.5.2.3 Examination of specimens: The bonded assembly shall remain under the pressure recommended by the manufacturer for a period of 4 hours at standard test conditions. Upon r
