1、1. SCOPE:1.1 Form:This specification covers a prepolymer in the form of an epoxy cresol novolac(ECN) resin.1.2 Application:This product has been used typically in the manufacture of high temperaturecomposite matrices and adhesive resins, but usage is not limited to suchapplications.1.3 Safety-Hazard
2、ous Materials:While the materials, methods, applications, and processes described orreferenced in this specification may involve the use of hazardous materials,this specification does not address the hazards which may be involved in suchuse. It is the sole responsibility of the user to ensure famili
3、arity withthe safe and proper use of any hazardous materials and to take necessaryprecautionary measures to ensure the health and safety of all personnelinvolved.2. APPLICABLE DOCUMENTS:The following publications form a part of this specification to the extentspecified herein. The latest issue of SA
4、E publications shall apply. Theapplicable issue of other publications shall be the issue in effect on thedate of the purchase order.AEROSPACE MATERIAL SPECIFICATIONAMS3728 REV. A Issued 1985-10Revised 1994-07Reaffirmed 2014-08Superseding AMS3728Epoxy Cresol Novolac ResinLow Molecular WeightRATIONALE
5、AMS3728A has been reaffirmed to comply with the SAE five year review policy._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 suitabil
6、ity for any particular use, including any patent infringement arising therefrom, 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 suggestion
7、s.Copyright 2014 SAE InternationalAll rights reserved. No part of this publication 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.877-606-7323 (ins
8、ide USA and Canada)TO PLACE A DOCUMENT ORDER: Tel: Tel: +1 724-776-4970 (outside USA)SAE WEB ADDRESS:Fax: 724-776-0790Email: CustomerServicesae.orghttp:/www.sae.orgSAE values your input. To provide feedbackon this Technical Report, please visithttp:/www.sae.org/technical/standards/AMS3728A2.1 SAE Pu
9、blications:Available from SAE, 400 Commonwealth Drive, Warrendale, PA 15096-0001.AMS 2825 Material Safety Data Sheets2.2 ASTM Publications:Available from ASTM, 1916 Race Street, Philadelphia, PA 19103-1187.ASTM D 1652 Epoxy Content of Epoxy ResinsASTM D 1763 Epoxy Resins2.3 U.S. Government Publicati
10、ons:Available from DODSSP, Subscription Services Desk, Building 4D, 700 RobbinsAvenue, Philadelphia, PA 19111-5094.MIL-STD-2073-1 DOD Materiel, Procedures for Development and Application ofPackaging Requirements3. TECHNICAL REQUIREMENTS:3.1 Material:Shall be a low molecular weight epoxy cresol novol
11、ac (ECN) resin derived froman ortho-cresol formaldehyde novolac reacted with epichlorohydrin to form apolyepoxide.3.2 Impurities:Resin shall be substantially free of foreign matter.3.3 Properties:Resin shall conform to requirements shown in Table 1, determined inaccordance with specified ASTM method
12、s.TABLE 1 - PropertiesParagraph Property3.3.1 Epoxy Content (equivalentper 100 grams)3.3.2 Softening Point (Durrans)Requirement0.44 to 0.5532 to 42 C(90 to 108 F)Test MethodASTM D 1652ASTM D 1763SAE INTERNATIONAL AMS3728A Page 2 of 6 3.4 Quality:The resin, as received by purchaser, shall be uniform
13、in quality andcondition and free from foreign materials and from contaminants detrimentalto usage of the resin.4. QUALITY ASSURANCE PROVISIONS:4.1 Responsibility for Inspection:(R)The manufacturer of the resin shall supply all samples for required tests andshall be responsible for performing all req
14、uired tests. Purchaser reservesthe right to sample and to perform any confirmatory testing deemed necessaryto ensure that the resin conforms to the requirements of this specification.4.2 Classification of Tests:Tests for all technical requirements are acceptance tests and preproductiontests and shal
15、l be performed prior to or on the initial shipment of resin toa purchaser, on each lot, when a change in ingredients and/or processingrequires reapproval as in 4.4.2, and when purchaser deems confirmatorytesting to be required.4.3 Sampling and Testing:(R)Shall be as follows:4.3.1 For Acceptance Test
16、s: Each lot of resin shall be sampled at random toprovide sufficient resin to perform all required tests. The number ofdeterminations for each requirement shall be as specified in the applicabletest procedure, or, if not specified therein, not less than three.4.3.1.1 A lot shall be all resin produce
17、d in a continuous production run from thesame batches of raw materials under the same fixed conditions andpresented for manufacturers inspection at one time.4.3.1.2 A batch shall be the quantity of material run in a reactor or mixer atone time.4.3.1.3 When a statistical sampling plan has been agreed
18、 upon by purchaser and(R)manufacturer, sampling shall be in accordance with such plan in lieu ofsampling as in 4.3.1 and the report of 4.5 shall state that such plan wasused.4.3.2 For Preproduction Tests: As agreed upon by purchaser and manufacturer.-3-SAE INTERNATIONAL AMS3728A Page 3 of 6 4.4 Appr
19、oval:4.4.1 Sample resin shall be approved by purchaser before resin for production useis supplied, unless such approval be waived by purchaser. Results of testson production resin shall be essentially equivalent to those on theapproved sample.4.4.2 Manufacturer shall use ingredients, manufacturing p
20、rocedures, processes,and methods of inspection on production resin which are essentially thesame as those used on the approved sample. If necessary to make any changein ingredients, in type of equipment for processing, or in manufacturingprocedures, manufacturer shall submit for reapproval a stateme
21、nt of theproposed changes in ingredients and/or processing and, when requested,sample resin. Production resin made by the revised procedure shall not beshipped prior to receipt of reapproval.4.5 Reports:The supplier of resin shall furnish with each shipment a report showing theresults of tests to de
22、termine conformance to the technical requirements.This report shall include the purchase order number, lot number, AMS 3728A,manufacturers product designation, date of manufacture, and quantity.4.5.1 A material safety data sheet conforming to AMS 2825, or equivalent, shallbe supplied to each purchas
23、er prior to, or concurrent with, the report ofpreproduction test results or, if preproduction testing be waived bypurchaser, concurrent with the first shipment of resin for production use.Each request for modification of resin formulation shall be accompanied bya revised data sheet for the proposed
24、formulation.4.6 Resampling and Retesting:(R)If any specimen used in the above tests fails to meet the specifiedrequirements, disposition of the resin may be based on the results of testingthree additional specimens for each original nonconforming specimen. Failureof any retest specimen to meet the s
25、pecified requirements shall be cause forrejection of the resin represented. Results of all tests shall be reported.5. PREPARATION FOR DELIVERY:5.1 Packaging and Identification:5.1.1 A lot of resin may be packaged in small quantities and delivered under thebasic lot approval provided lot identificati
26、on is maintained.5.1.2 The resin shall be packaged in air-tight containers and stored away, orotherwise protected, from excessive heat and humidity. Type and size ofcontainers shall be aqreed upon by purchaser and supplier.-4-SAE INTERNATIONAL AMS3728A Page 4 of 6 5.1.35.1.4(R)5.1.5(R)Each container
27、 of epoxy resin shall be legibly identified, with not lessthan the following information, by an attached label using characters whichwill not be obliterated by normal handling:EPOXY CRESOL NOVOLAC RESINAMS 3728AMANUFACTURERS IDENTIFICATIONPURCHASE ORDER NUMBERDATE OF MANUFACTURELOT NUMBERQUANTITYSTO
28、RE AWAY FROM EXCESSIVE HEAT AND HUMIDITYThe individual containers of resin shall be packed in exterior shippingcontainers and prepared for shipment in accordance with commercial practiceand in compliance with applicable rules and regulations pertaining to thehandling, packaging, and transportation o
29、f the resin to ensure carrieracceptance and safe delivery.For direct U.S. Military procurement, packaging shall be in accordance withMIL-STD-2073-1, Level C, unless Level A is specified in the request forprocurement.6. ACKNOWLEDGMENT:A supplier shall mention this specification number and its revisio
30、n letter inall quotations and when acknowledging purchase orders.7. REJECTIONS:Resin not conforming to this specification, or to modifications authorized bypurchaser, will be subject to rejection.8. NOTES:8.1 The (R) symbol is for the convenience of the user in locating areas wheretechnical revision
31、s, not editorial changes, have been made to the previousissue of this specification. If the symbol is next to the specificationtitle, it indicates a complete revision of the specification.8.2 Properties in inch/pound units and the Celsius temperatures are primary;properties in SI units and the Fahre
32、nheit temperatures are shown as theapproximate equivalents of the primary units and are presented only forinformation.SAE INTERNATIONAL AMS3728A Page 5 of 6 8.38.48.5For direct U.S. Military procurement, purchase documents should specify notless than the following:Title, number, and date of this spe
33、cificationType and size of individual containers desired (See 5.1.2)Quantity of resin desiredLevel A packaging, if required (See 5.1.5).Resin meeting the requirements of this specification has been classifiedunder Federal Supply Classification (FSC) 9330.Key Words:Prepolymer, composite matricesPREPARED UNDER THE JURISDICTION OF AMS COMMITTEE “CP”SAE INTERNATIONAL AMS3728A Page 6 of 6
