EN ISO 585-1999 en Plastics - Unplasticized Cellulose Acetate - Determination of Moisture Content《塑料 未增塑的乙酸纤维素 水分含量的测定》.pdf

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1、BRITISH STANDARD BS EN ISO 585:1999 Incorporating Amendment No.1 to BS2782-4: Method431C:1991 (renumbers the BS as BS EN ISO585:1999) Plastics Unplasticized cellulose acetate Determination of moisture content IMPORTANT NOTE. Before reading this method it is essential to read BS2782-0, Introduction,

2、issued separately The European Standard ENISO585:1999 has the status of a BritishStandard ICS 83.080.20BSENISO585:1999 This BritishStandard, having been prepared under the directionof the Plastics andRubber Standards PolicyCommittee, was publishedunderthe authorityofthe Standards Boardand comes into

3、effect on 15October1991 BSI04-2000 The following BSI references relate to the work on this standard: Committee reference PRM/21 Draft announced in BSI News, September1991 ISBN 0 580 20061 2 Committees responsible for this BritishStandard The preparation of this BritishStandard was entrusted by the P

4、lastics and Rubber Standards Policy Committee (PRM/-), to Technical Committee PRM/21, upon which the following bodies were represented: British Plastics Federation British Steel Industry British Telecommunications plc British Textile Confederation Department of Trade and Industry (National Physical

5、Laboratory) EEA (The Association of Electronics, Telecommunications and Business Equipment Industries) Electrical and Electronic Insulation Association (BEAMA Ltd.) Electrical Installation Equipment Manufacturers Association (BEAMA Ltd.) GAMBICA (BEAMA Ltd.) Ministry of Defence Packaging and Industr

6、ial Films Association PIRA Plastic Industrial Containers Association Plastics and Rubber Institute RAPRA Technology Ltd. Yarsley Technical Centre Ltd. Amendments issued since publication Amd. No. Date Comments 10615 November 1999 Implementation of the European StandardBSENISO585:1999 BSI 04-2000 i C

7、ontents Page Committees responsible Inside front cover National foreword ii Foreword 2 Text of EN ISO585 3BSENISO585:1999 ii BSI 04-2000 National foreword This BritishStandard is the English language version of EN ISO585:1999. WARNING NOTE. This BritishStandard, which is identical with EN ISO585, do

8、es not necessarily detail all the precautions necessary to meet the requirements of the Health and Safety at Work etc. Act1974. Attention should be paid to any appropriate safety precautions and the method should be operated only by trained personnel. A British Standard does not purport to include a

9、ll 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. Summary of pages This document comprises a front cover, an inside front cover, pages i an

10、d ii, theEN ISO title page, pages 2 and 3 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.EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO585 May1999 ICS 83

11、.080.00 English version Plastics Unplasticized cellulose acetate Determination of moisture content (ISO585:1990) Plastiques Acetate de cellulose non plastifi Dtermination de lhumidit (ISO585:1990) Kunststoffe Weichmacherfreies Celluloseacetat Bestimmung des Feuchtegehaltes (ISO585:1990) This Europea

12、n Standard was approved by CEN on16 April1999. 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 concerni

13、ng such national standards 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 lan

14、guage and notified to the Central Secretariat has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, CzechRepublic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden,

15、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 1999 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Membe

16、rs. Ref.No.ENISO585:1999EENISO585:1999 BSI 04-2000 2 Foreword The text of the International Standard from Technical Committee ISO/TC61, Plastics, of the International Organization for Standardization (ISO) has been taken over as a European Standard by Technical Committee CEN/TC249, Plastics, the Sec

17、retariat of which is held by IBN. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by November1999, and conflicting national standards shall be withdrawn at the latest by November1999. According to CE

18、N/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, CzechRepublic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden

19、, Switzerland and theUnitedKingdom. Endorsement notice The text of the International Standard ISO585:1990 has been approved by CEN as a European Standard without any modification. Contents Page Foreword 2 1 Scope 3 2 Principle 3 3 Apparatus 3 4 Procedure 3 5 Expression of results 3 6 Precision 3 7 T

20、est report 3ENISO585:1999 BSI 04-2000 3 WARNING The use of this International Standard may involve hazardous materials, operations and equipment. This standard does not purport to address all of the safety problems associated with its use. It is the responsibility of the user of this standard to est

21、ablish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. 1 Scope This International Standard specifies a method for the determination of the moisture content of non-plasticized cellulose acetate. This determination may be required for the

22、 calculation of the dry mass of the cellulose acetate used in analytical methods. This method applies only to cellulose acetate with a moisture content of not more than10%. 2 Principle A test portion is dried at105 C in a thermostatic oven, then weighed. The moisture content is calculated from the l

23、oss of mass of the test portion. 3 Apparatus 3.1 Glass weighing bottle, low wide form, with a ground-glass lid. 3.2 Desiccator, containing anhydrous calcium chloride. 3.3 Oven, capable of being maintained at105 C 2 C. 3.4 Balance, accurate to1mg. 4 Procedure 4.1 Dry the weighing bottle and its groun

24、d-glass lid(3.1) in the oven(3.3), maintained at105 C 2 C, for1/2h, cool in the desiccator(3.2) and weigh to the nearest1mg. Weigh approximately5g of cellulose acetate, to the nearest1mg, into the weighing bottle. Introduce the weighing bottle containing the test portion, with its lid removed and pl

25、aced alongside it, into the oven, maintained at105 C 2 C and leave it in the oven for3h. Remove the weighing bottle from the oven, cover with its lid, cool in the desiccator and then re-weigh to the nearest1mg. 4.2 Carry out two determinations. If the difference in percentage moisture content betwee

26、n the two is more than0,1, repeat the test. 5 Expression of results The moisture content, expressed as a percentage by mass, is given by the formula where m 1 is the mass, in grams, of the test portion before drying; m 2 is the mass, in grams, of the test portion after drying. Take as the result the

27、 mean of two acceptable determinations (see4.2). 6 Precision The precision of this test method is not known because inter-laboratory data are not available. This method may not be suitable for use in specifications or in case of disputed results as long as these data are not available. 7 Test report

28、 The test report shall include the following particulars: a) a reference to this International Standard; b) all details necessary for the complete identification of the product tested, including physical form; c) the percentage moisture content. m 1 m 2 m 1 -100 BS ENISO 585:1999 BSI 389 Chiswick Hi

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