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1、BRITISH STANDARD BS EN ISO 1172:1999 Incorporating Amendment No. 1 to BS ISO 1172:1996 (renumbers the BS as BS EN ISO 1172:1999) Textile-glass-reinforced plastics Prepregs, moulding compounds and laminates Determination of the textile-glass and mineral-filler content Calcination methods The European
2、 Standard EN ISO 1172:1998 has the status of a British Standard ICS 83.120 Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 20 02:22:14 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN ISO 1172:1999 This British Standard, having been prepared under the direction of the Sector Board for Materials
3、and Chemicals, was published under the authority of the Standards Board and comes into effect on 15 April 1997 BSI 03-2000 ISBN 0 580 27291 5 National foreword This British Standard is the English language version of EN ISO 1172:1998. The UK participation in its preparation was entrusted to Technica
4、l Committee PRI/42, Fibre reinforced thermosetting plastics and prepregs, which has the responsibility to: aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informe
5、d; monitor related international and European developments and promulgate them in the UK. A list of organizations represented on this committee can be obtained on request to its secretary. Cross-references The British Standards which implement international or European publications referred to in th
6、is document may be found in the BSI Standards Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Find” facility of the BSI Standards Electronic Catalogue. A British Standard does not purport to include all the necessary provisions of a contract. Use
7、rs of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, the EN ISO title page, page 2, the ISO t
8、itle page, pages ii to iv, pages 1 to 6 and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover. Amendments issued since publication Amd. No.DateComments 10350April 1999 Im
9、plementation of the European Standard Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 20 02:22:14 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN ISO 1172:1999 BSI 03-2000i Contents Page National forewordInside front cover Foreword2 Forewordiii Text of ISO 11721 Licensed Copy: sheffieldun sheff
10、ieldun, na, Mon Nov 20 02:22:14 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ii blank Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 20 02:22:14 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 1172 August 1998 ICS 83.120Supersedes EN 60:1977 Des
11、criptors: See ISO document English version Textile-glass-reinforced plastics Prepregs, moulding compounds and laminates Determination of the textile-glass and mineral-filler content Calcination methods (ISO 1172:1996) Plastiques renforcs de verre textile Primprgns, compositions de moulage et stratif
12、is Dtermination des taux de verre textile et de charge minrale Mthodes par calcination (ISO 1172:1996) Textilglasverstrkte Kunststoffe Prepregs, Formmassen und Laminate Bestimmung des Textilglas-und Mineralfllstoffgehalts Kalzinierungsverfahren (ISO 1172:1996) This European Standard was approved by
13、CEN on 3 August 1998. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standard
14、s may be obtained on application to the Central Secretariat or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the
15、 Central Secretariat has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United K
16、ingdom. CEN European Committee for Standardization Comit Europen de Normalisation Europisches Komitee fr Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels 1998 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 1172
17、:1998 E Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 20 02:22:14 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN ISO 1172:1998 BSI 03-2000 2 Foreword The text of the International Standard from Technical Committee ISO/TC 61, Plastics, of the International Organization for Standardization (ISO)
18、has been taken over as a European Standard by Technical Committee CEN/TC 249, Plastics, the Secretariat of which is held by IBN. This European Standard replaces EN 60:1977. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endor
19、sement, at the latest by February 1999, and conflicting national standards shall be withdrawn at the latest by February 1999. According to CEN/CENELEC Internal Regulations, the following countries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland, Fran
20、ce, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom. Endorsement notice The text of the International Standard ISO 1172:1996 has been approved by CEN as a European Standard without any modification. Licensed Copy:
21、 sheffieldun sheffieldun, na, Mon Nov 20 02:22:14 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 20 02:22:14 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS ISO 1172:1996 ii BSI 03-2000 Contents Page Forewordiii 1Scope1 2Normative references1 3Definition
22、s1 4Principle1 5Sampling2 6Preparation of test specimens2 7Determination2 7.1Method A2 7.1.1Reagents2 7.1.2Apparatus2 7.1.3Procedure2 7.1.4Expression of results3 7.2Method B3 7.2.1Reagents3 7.2.2Apparatus3 7.2.3Procedure3 7.2.4Expression of results4 8Precision4 9Test report5 Annex A (informative) Al
23、ternative method of separating chopped glass fibre from mineral filler6 Descriptors: Reinforced plastics, textile glass, glass reinforced plastics, laminates, prepregs, tests, physical tests, roasting tests, determination of content, glass fibres, mineral matter. Licensed Copy: sheffieldun sheffield
24、un, na, Mon Nov 20 02:22:14 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS ISO 1172:1996 BSI 03-2000iii Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normal
25、ly 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 committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the
26、 work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requ
27、ires approval by at least 75 % of the member bodies casting a vote. International Standard ISO 1172 was prepared by Technical Committee ISO/TC 61, Plastics, Subcommittee SC 13, Composites and reinforcement fibres. This second edition cancels and replaces the first edition (ISO 1172:1975), which has
28、been technically revised (an additional method, method B, has been included and the annex, which concerned the estimation of the standard deviation, has been replaced by Annex A describing an alternative method of separating chopped glass fibre from mineral filler). Annex A of this International Sta
29、ndard is for information only. Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 20 02:22:14 GMT+00:00 2006, Uncontrolled Copy, (c) BSI iv blank Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 20 02:22:14 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS ISO 1172:1996 BSI 03-20001 WARNING This Int
30、ernational Standard does not give details of the precautions that should be taken to meet health and safety requirements. The test methods described require the use of high temperatures and concentrated acids. It is the responsibility of the user of this International Standard to follow the appropri
31、ate health and safety procedures. 1 Scope This International Standard specifies two calcination methods for the determination of the textile-glass and mineral- filler content of glass-reinforced plastics: Method A: for the determination of the textile-glass content when no mineral fillers are presen
32、t. Method B: for the determination of the textile-glass and mineral-filler content when both components are present. This International Standard is applicable to the following types of material: prepregs made from yarns, rovings, tapes or fabrics; SMC, BMC and DMC moulding compounds; textile-glass-r
33、einforced thermoplastic moulding materials and granules; filled or unfilled textile-glass laminates made with thermosetting or thermoplastic resins. The methods are not applicable to the following types of reinforced plastic: those containing reinforcements other than textile glass; those containing
34、 materials which do not completely burn off at the test temperature (for example, those based on silicone resin); those containing mineral fillers which degrade at temperatures below the minimum calcination temperature. For these materials, ISO 11667, Fibre-reinforced plastics Moulding compounds and
35、 prepregs Determination of resin, reinforcement-fibre and mineral-filler content Dissolution method, may be used. 2 Normative references The following standards contain provisions which, through reference in this text, constitute provisions of this International Standard. At the time of publication,
36、 the editions indicated were valid. All standards are subject to revision, and parties to agreements based on this International Standard are encouraged to investigate the possibility of applying the most recent editions of the standards indicated below. Members of IEC and ISO maintain registers of
37、currently valid International Standards. ISO 472:1988, Plastics Vocabulary. ISO 4793:1980, Laboratory sintered (fritted) filters Porosity grading, classification and designation. ISO 8604:1988, Plastics Prepregs Definitions of terms and symbols for designations. 3 Definitions For the purposes of thi
38、s International Standard, the definitions given in ISO 472 and ISO 8604 apply. 4 Principle A test specimen is weighed and subsequently calcinated at a defined temperature. The specimen is then reweighed and the non-combustible matter content (glass + filler) obtained by determining the difference in
39、 mass of a test specimen before and after calcination in one of the following ways: a) In the case of materials containing no fillers the glass content is calculated directly from the difference in mass (method A); b) In the case of materials containing both glass and filler, the glass and filler re
40、maining after calcination are separated by dissolution of the filler in hydrochloric acid. The difference between the mass of the specimen before calcination and the mass of the dried specimen after reaction with acid is used to measure the glass content. The filler content is obtained by calculatin
41、g the difference between the mass of the specimen after calcination and the mass of the dried specimen after reaction with acid (method B). The test method requires that all weighings be made at constant mass after repeated calcination and/or drying. In those cases where known materials are being te
42、sted regularly, a minimum time for the calcination and drying stages may be determined by experiment to ensure that constant mass has been reached. Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 20 02:22:14 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS ISO 1172:1996 2 BSI 03-2000 NOTE 1If the m
43、aterial tested contains a resin which is combustible under the test conditions and/or fillers which do not degrade by calcination, then the loss on ignition is equal to the resin content. It should be noted that the resin content calculated in this way includes the combustible part of the other comp
44、onents in the composition (glass size, pigments, etc.) but this is usually small compared to the resin content. NOTE 2In those cases where fillers are present that are degraded at the test temperature, it is not possible to obtain an accurate determination of the glass, resin or filler content. 5 Sa
45、mpling 5.1 The determination of the glass and filler contents is shall be carried out in parallel on two specimens which are as near identical as possible. The result of the test is the average of the measurements on the two specimens, provided that the difference between the two measurements is les
46、s than 5 %. If this is not the case, a third specimen shall be tested which is as near identical to the other two as possible. The three values shall then be used to calculate the test result. 5.2 In order to carry out an evaluation test the result of which is as representative as possible of the gl
47、ass and filler content of the elementary unit or laboratory sample, this test procedure may need to be repeated a certain number of times, at specific locations in the elementary unit examined. The number of times and the actual locations will be defined either in the product specification or by the
48、 person requesting the analysis. In the latter case, the number and location will be decided by experience or as the result of previous work. 5.3 For all tests other than those on elementary units, take specimens that are as representative of the material under test as circumstances allow. 6 Prepara
49、tion of test specimens The test specimens shall be fully representative of the piece or batch examined. They shall be obtained in accordance with clause 5. Unless otherwise specified, it is recommended that the specimens be cut out in a shape which allows them to fit into a silica boat or porcelain crucible. The mass of each specimen shall be within the range 2 g to 20 g for prepregs and moulding compounds; 2 g to 10 g for laminates. For each test result, use a minimum of two specimens (see 5.1). In
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