BS-ISO-15040-1999.pdf
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1、| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | BRITISH STANDARD BS ISO 15040:1999 ICS 83.
2、120 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW Composites Prepregs Determinaton of gel time Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 27 08:11:27 GMT+00:00 2006, Uncontrolled Copy, (c) BSI This British Standard, having been prepared under the direction of the Se
3、ctor Committee for Materials and chemicals was published under the authority of the Standards Committee and comes into effect on 15 March 2000 BSI 03-2000 ISBN 0 580 34509 2 BS ISO 15040:1999 Amendments issued since publication Amd. No.DateComments National foreword This British Standard reproduces
4、verbatim ISO 15040:1999 and implements it as the UK national standard. The UK participation in its preparation was entrusted to Technical Committee PRI/42, Fibre reinforced thermosetting plastics and prepregs, which has the responsibility to: aid enquirers to understand the text; present to the resp
5、onsible international/ European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. A list of organizations represented on this committee can be obtained on
6、request to its secretary. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Standards Catalogue under the section entitled International Standards Correspondence Index, or by using the Find facility of t
7、he BSI Standards Electronic Catalogue. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Su
8、mmary of pages This document comprises a front cover, an inside front cover, the ISO title page, pages ii and iii, a blank page, pages 1 to 5 and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued. Licensed Copy: sheffieldun sheffieldun, na,
9、 Mon Nov 27 08:11:27 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Reference number ISO 15040:1999(E) INTERNATIONAL STANDARD ISO 15040 First edition 1999-12-15 Composites Prepregs Determination of gel time Composites Primprgns Dtermination du temps de glification Licensed Copy: sheffieldun sheffieldun,
10、 na, Mon Nov 27 08:11:27 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ISO15040:1999(E) ii? Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 27 08:11:27 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ISO 15040:1999(E) ?iii Foreword ISO (the International Organization for Standardization) is a worldwide
11、federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that c
12、ommittee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in acco
13、rdance with the rules given in the ISO/IEC Directives, Part 3. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. Attention
14、is drawn to the possibility that some of the elements of this International Standard may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. International Standard ISO 15040 was prepared by Technical Committee ISO/TC 61,Plastics, Subcommi
15、ttee SC 13,Composites and reinforcement fibres. Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 27 08:11:27 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 27 08:11:27 GMT+00:00 2006, Uncontrolled Copy, (c) BSI INTERNATIONAL STANDARD?ISO 15040:1999(
16、E) ?1 Composites Prepregs Determination of gel time 1?Scope This International Standard specifies a method for the determination of the gel time of prepregs made of continuous reinforcement impregnated with epoxy and/or unsaturated-polyester resin. The method is applicable to most prepregs with a wi
17、dth in the range 300 mm to 1000 mm. It is not suitable for very narrow prepregs (for example narrow tape), nor for prepregs with a low resin content. NOTE?Other methods of measuring gel time exist. These methods are based on principles which differ from those described in clause 4, and the results o
18、btained using such methods may be different from those obtained with this International Standard. The method described below is the traditionally used one and is widely accepted, even though it may be somewhat obsolete. 2?Normative references The following normative documents contain provisions whic
19、h, through reference in this text, constitute provisions of this International Standard. For dated references, subsequent amendments to, or revisions of, any of these publications do not apply. However, parties to agreements based on this International Standard are encouraged to investigate the poss
20、ibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition of the normative document referred to applies. Members of ISO and IEC maintain registers of currently valid International Standards. ISO 291:1997,Plastics Standard atmo
21、spheres for conditioning and testing. ISO 472:1999,Plastics Vocabulary. ISO 8604:1988,Plastics Prepregs Definitions of terms and symbols for designations. 3?Terms and definitions For the purposes of this International Standard, the terms and definitions given in ISO 472 and ISO 8604 apply. 4Principl
22、e A test specimen is prepared by laying up square pieces cut from the prepreg sample and wrapped in an impervious film or foil. The resin is squeezed out by applying pressure to the specimen in a hot press preheated to the test temperature. The gel time of the resin is measured as the point at which
23、 it can no longer be spun or drawn into a thread. Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 27 08:11:27 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ISO 15040:1999(E) 2? 5?Apparatus 5.1?Cutting template, made of a hard metal such as steel, or ceramic material, measuring 50 mm by 50 mm and ab
24、out 2,5 mm thick. 5.2?Knife, single-edge. 5.3?Notched plate for measuring gel time, as shown in Figure 1 for example. The plate shall be sufficiently flat to ensure a uniform temperature distribution. 5.4?Heated-platen press, capable of raising the temperature to 200 C and maintaining the pressure a
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