1、BRITISH STANDARD CONFIRMED JULY 1989 BS2782-10: Method1002: 1977 EN60 Incorporates Amendment No.1 to EN60 Methods of testing Plastics Part10: Glass reinforced plastics Method1002: Determination of loss on ignition IMPORTANT NOTE. Before reading this method it is essential to read the foreword, gener
2、al introduction and instructions to BS2782, issued separately. Attention is drawn to the information given in“National appendix A” (see inside back cover). UDC678.5/.8.046.364.620.1:543.822BS2782-10:Method1002:1977 This British Standard was published under the authority of the Executive Board on 31
3、August1977 BSI 09-1999 The following BSI references relate to the work on this standard: Committee reference PLC/- Draft for comment74/54599DC ISBN0 580 09725 0 Cooperating organizations The European Committee for Standardization, under whose direction this European Standard was prepared, comprises
4、the national standards organizations of the following Western European countries: Austria Oesterreichisches Normungsinstitut Belgium Institut Belge de Normalisation Denmark Dansk Standardiseringsraad Finland Suomen Standardisoimisliitto, r.y. France Association Franaise de Normalisation Germany DIN
5、Deutsches institut fr Normung Ireland Institute for Industrial Research and Standards Italy Ente Nazionale Italiano di Unificazione Netherlands Nederlands Normalisatie-instituut Norway Norges Standardiseringsforbund Portugal Repartio de Normalizao Spain Instituto Nacional de Racionalizacin y Normali
6、zacin Sweden Sveriges Standardiseringskommission Switzerland Association Suisse de Normalisation United Kingdom British Standards Institution Amendments issued since publication Amd. No. Date of issue Comments 2810 April 1979 Indicated by a sideline in the marginBS2782-10:Method1002:1977 BSI 09-1999
7、 i Contents Page Cooperating organizations Inside front cover Brief history 2 Foreword 2 1 Scope 3 2 Principle of the method 3 3 Apparatus 3 4 Sampling and test specimens 3 5 Conditioning of test specimens 3 6 Procedure 3 7 Calculation and expression of results 4 8 Test report 4 National appendix A
8、Origins of work and relationship with other British Standards Inside back coverBS2782-10:Method1002:1977 ii BSI 09-1999 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
9、 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, theENtitle page, pages2 to4, an inside back cover and a back cover. This standard has been updated (see copyright date) and ma
10、y have had amendments incorporated. This will be indicated in the amendment table on the inside front cover.EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN60 Edition1 March1977 Incorporates Amendment No.1 (June1978) UDC678.5/8:677.521:543.273 Key words: Plastics, glass reinforced plastics, test
11、s, thermal tests, heating losses, pyrolytic analysis, chemical analysis, determination of content, glass, resins, test equipment, test specimens, testing conditions English version Glass reinforced plastics Determination of the loss on ignition Matires plastiques renforces au verre textile. Dtermina
12、tion de la perte au feu Glasfaserverstrkte Kunststoffe. Bestimmungdes Glhverlustes This European Standard was accepted by CEN on1977-03-31. The CEN members are bound to adhere to the CEN Internal Regulations which specify under which conditions this European Standard has to be given, without any alt
13、eration, the status of a national standard. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN Central Secretariat or to any CEN member. This European Standard exists in three versions (English, French, German) recognized by C
14、EN as equivalent. National versions in other languages rank as translations and in case of doubt shall be checked against one of the recognized versions. CEN members are the national standards organizations of Austria, Belgium, Denmark, Finland, France, Germany, Ireland, Italy, Netherlands, Norway,
15、Portugal, Spain, Sweden, Switzerland and United Kingdom. CEN European Committee for Standardization Comit Europen de Normalisation Europisches Komitee fr Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels Copyright reserved to all CEN membersEN60 BSI 09-1999 2 Brief history This Europe
16、an Standard was drawn up by CEN Technical Committee66 “Testing of glass fibre reinforced plastics”, the Secretariat of which is held by AFNOR. The contents of this standard were submitted for ballot to the members of CEN in November1974 in view of its adoption as a European Standard. This European S
17、tandard was adopted by CEN as a result of its acceptance by the following member countries: Austria, Belgium, Denmark, France, Germany, Italy, Netherlands, Portugal, Spain, UnitedKingdom. Foreword This standard is substantially in agreement with ISO1172:1975, “Textile glass reinforced plastics Deter
18、mination of loss on ignition”. The essential difference concerns the preparation of test specimens from products with a thickness greater than5mm.EN60 BSI 09-1999 3 1 Scope This standard describes a method for determining the loss on ignition of glass reinforced plastics. 1.1 If the material to be t
19、ested contains only glass and a resin which is completely combustible (under the conditions of this test method), the loss on ignition is equal to the resin content (see note below). The glass content may then be calculated by difference. 1.2 In the case of products which contain non-combustible min
20、eral fillers, other than glass reinforcement, or resins which are incompletely combustible (under the conditions of this test method), the presence of which materials can be recognized or verified by examination of the residue after ignition, this method only allows the determination of the ash by d
21、ifference. NOTEThe glass used as a reinforcement is usually coated with ancillary products (sizing, finish, etc.) which most often are completely eliminated during calcination and therefore included in the loss on ignition. 2 Principle of the method Ignition of weighed test specimens at a standard t
22、emperature of625 20 C to constant mass (see6.2). NOTEFor glass reinforcements which cannot resist this temperature a temperature between500 C and600 C, according to the glass specification or upon agreement, can be chosen. It is essential to keep the chosen temperature constant to 20 C. 3 Apparatus
23、3.1 Container made of an appropriate material and of suitable dimensions (a porcelain or platinium crucible, or porcelain boat may be used). 3.2 Electric muffle furnace the temperature of which can be varied between 450 C and650 C and which can be controlled to 20 C. 3.3 Desiccator containing a suit
24、able drying agent (e.g.silica gel, calcium chloride, phosphorus pentoxide). 3.4 Balance with an accuracy of0.1mg. 3.5 A ventilated oven which can be maintained at50 2 C and at a relative humidity of not greater than10%. 4 Sampling and test specimens The test specimens shall collectively form a repre
25、sentative sample of the part or the consignment to be tested. Consequently, the number of test specimens and the sampling plan shall be taken as indicated by a particular specification or by previous agreement, taking into account the nature and type of distribution of the reinforcement. The followi
26、ng requirements are mandatory. 1) At least four test specimens shall be taken. 2) The mass of each specimen shall be at least2g. 3) The thickness of each specimen shall be not more than5mm. If the thickness of the product to be tested is greater than5mm the specimen shall be cut through the full thi
27、ckness and one of the cut dimensions shall be not greater than5mm. 4) The specimens shall be prepared in such a manner that edges are smooth and free of all loosely adhering resin and reinforcement particles. NOTEIt is permissible for determinations to be made using test pieces cut from specimens wh
28、ich have been used to determine mechanical properties, provided that such test pieces are cut from undamaged areas of these specimens. 5 Conditioning of test specimens Dry the test specimens at50 2 C in a ventilated oven, in which the relative humidity does not exceed10%. Continue the drying until t
29、he difference in mass after a further period of drying of not less than30min does not exceed1mg. 6 Procedure 6.1 Preparation of the container. Before commencing each series of tests, a test with the empty container(3.1) shall be performed, by heating in the muffle furnace (as specified in6.2), to ve
30、rify that the mass is constant to1mg. Otherwise, repeat this blank test until constant mass is achieved. NOTEIt is essential that the weighing of the container is performed after the container has been cooled to room temperature in a desiccator(3.3). 6.2 Weighing and ignition of test specimens. For
31、each test specimen carry out the following sequence of operations, all weighing being made to the nearest milligram. 6.2.1 Weigh the container(3.1) prepared as indicated in6.1. If necessary condition the test specimen in accordance with clause5 and weigh together with the container. Heat the contain
32、er with the test specimen in a flame until the contents ignite. Maintain such a temperature that the specimen burns at a moderate rate until only ash and carbon remain when the burning ceases.EN60 4 BSI 09-1999 6.2.2 Heat the container and residue in the muffle furnace(3.2) at the standard temperatu
33、re(625 20 C) or at the chosen temperature, until all carbon has disappeared. 6.2.3 Cool the container and the residue in a desiccator(3.3) to room temperature and weigh. 6.2.4 Repeat the procedure specified above until the difference in mass on two successive weighings is less than1mg. 7 Calculation
34、 and expression of results For each test specimen, calculate the loss on ignition, expressed as a percentage of the original mass, by the following formula: where Calculate the arithmetic mean of the values obtained for P, and report to the nearest whole number. 8 Test report The test report shall i
35、nclude a reference to this standard and the following information. 8.1 complete identification of the product; 8.2 description of the sampling method, if necessary; 8.3 number of test specimens used; 8.4 dimensions of the test specimens; 8.5 ignition temperature if it is different from625 20 C; 8.6
36、ignition loss 1)of each test specimen; 8.7 arithmetic mean and standard deviation of each homogeneous group of test specimens; 8.8 observations about any irregularities noted in the physical aspect of the residue, such as, for instance, melting of the glass. P is the percentage loss on ignition m 1
37、is the mass of the container m 2 is the initial total mass of the container plus the specimen m 3 is the final total mass, after combustion, of the container and the residue P m 2 m 3 m 2 m 1 -100 = 1) If there is no other filling material except glass fibre, the glass content is given by100% less t
38、he loss on ignition.BS 2782-10:Method1002:1977 BSI 09-1999 National appendix A Origins of work and relationship with other BritishStandards The United Kingdom participated in the preparation of this and four other similar standards required to enable the principle of “reference to standards” to be a
39、pplied in the preparation, by the Commission of the European Communities, of a directive concerning tanks made from reinforced plastics for the transport of dangerous materials. These standards are intended to be used solely for this purpose and they should not be adopted for other applications with
40、out full technical consideration of the particular circumstances. This method is technically similar to method107J of BS2782:1970, “Methods of testing plastics”; the main differences from that method are that the ignition temperature is625 C instead of575 C and more detailed instructions are given.
41、EN62, which is referred to in this standard, has been published as Method 1004 of BS2782. The usual standard atmosphere used in the UK for conditioning plastics is23 2 C,50 5%r.h.BS2782-10: Method1002: 1977 EN60 BSI 389 Chiswick High Road London W4 4AL BSIBritishStandardsInstitution BSI is the indep
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