ImageVerifierCode 换一换
格式:PDF , 页数:16 ,大小:655.11KB ,
资源ID:678352      下载积分:10000 积分
快捷下载
登录下载
邮箱/手机:
温馨提示:
如需开发票,请勿充值!快捷下载时,用户名和密码都是您填写的邮箱或者手机号,方便查询和重复下载(系统自动生成)。
如填写123,账号就是123,密码也是123。
特别说明:
请自助下载,系统不会自动发送文件的哦; 如果您已付费,想二次下载,请登录后访问:我的下载记录
支付方式: 支付宝扫码支付 微信扫码支付   
注意:如需开发票,请勿充值!
验证码:   换一换

加入VIP,免费下载
 

温馨提示:由于个人手机设置不同,如果发现不能下载,请复制以下地址【http://www.mydoc123.com/d-678352.html】到电脑端继续下载(重复下载不扣费)。

已注册用户请登录:
账号:
密码:
验证码:   换一换
  忘记密码?
三方登录: 微信登录  

下载须知

1: 本站所有资源如无特殊说明,都需要本地电脑安装OFFICE2007和PDF阅读器。
2: 试题试卷类文档,如果标题没有明确说明有答案则都视为没有答案,请知晓。
3: 文件的所有权益归上传用户所有。
4. 未经权益所有人同意不得将文件中的内容挪作商业或盈利用途。
5. 本站仅提供交流平台,并不能对任何下载内容负责。
6. 下载文件中如有侵权或不适当内容,请与我们联系,我们立即纠正。
7. 本站不保证下载资源的准确性、安全性和完整性, 同时也不承担用户因使用这些下载资源对自己和他人造成任何形式的伤害或损失。

版权提示 | 免责声明

本文(DIN EN ISO 10283-2007 Binders for paints and varnishes - Determination of monomeric diisocyanates in isocyanate resins (ISO 10283 2007) English version of DIN EN ISO 10283 2007-11《.pdf)为本站会员(hopesteam270)主动上传,麦多课文库仅提供信息存储空间,仅对用户上传内容的表现方式做保护处理,对上载内容本身不做任何修改或编辑。 若此文所含内容侵犯了您的版权或隐私,请立即通知麦多课文库(发送邮件至master@mydoc123.com或直接QQ联系客服),我们立即给予删除!

DIN EN ISO 10283-2007 Binders for paints and varnishes - Determination of monomeric diisocyanates in isocyanate resins (ISO 10283 2007) English version of DIN EN ISO 10283 2007-11《.pdf

1、November 2007DEUTSCHE NORM English price group 10No part of this standard may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).ICS 87.060.20!$JKH“139403

2、7www.din.deDDIN EN ISO 10283Binders for paints and varnishes Determination of monomeric diisocyanates in isocyanate resins(ISO 10283:2007)English version of DIN EN ISO 10283:2007-11Bindemittel fr Beschichtungsstoffe Bestimmung von monomeren Diisocyanaten in Isocyanatharzen (ISO 10283:2007)Englische

3、Fassung DIN EN ISO 10283:2007-11SupersedesDIN EN ISO 10283:2006-04www.beuth.deDocument comprises 16 pagesDIN EN ISO 10283:2007-11 2 National foreword This standard falls within the responsibility of Technical Committee CEN/TC 139 “Paints and varnishes” (Secretariat: DIN, Germany). It is identical wi

4、th International Standard ISO 10283 which was prepared by Technical Committee ISO/TC 35 “Paints and varnishes”, Subcommittee SC 10 “Test methods for binders for paints and varnishes” (Secretariat: DIN, Germany). The responsible German body involved in its preparation was the Normenausschuss Beschich

5、tungsstoffe und Beschichtungen (Coatings and Coating Materials Standards Committee), Technical Committee NA 002-00-02 AA Lackrohstoffe. In this standard, the unit “ppm” is used. It should, however, be noted that the Gesetz ber Einheiten im Mess-wesen (German Law on units in metrology) prohibits the

6、use of the unit “ppm” for official and commercial purposes in Germany. Note to 8.1.1, 8.1.2, 8.1.3 and 8.1.4: OVis the trade name of the columns supplied by Ohio Valey Specialty Chemical Co. This information is given for the convenience of users of this document and does not constitute an endorsemen

7、t by ISO or CEN of the product named. Equivalent products may be used if they can be shown to lead to the same results. The DIN Standard corresponding to the International Standard referred to in clause 2 of the EN is as follows: ISO 15528 DIN EN ISO 15528 Amendments This standard differs from DIN E

8、N ISO 10283:2006-04 as follows: a) Concerns the German version only. b) The normative references have been updated. c) Concerns the German version only. Previous editions DIN 55956: 1982-11, 1996-10 DIN EN ISO 10283: 2006-04 National Annex NA (informative) Bibliography DIN EN ISO 15528, Paints, varn

9、ishes and raw materials for paints and varnishes Sampling EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 10283 September 2007 ICS 87.060.20 English Version Binders for paints and varnishes - Determination of monomeric diisocyanates in isocyanate resins (ISO 10283:2007) Liants pour peinture

10、s et vernis - Dtermination des diisocyanates monomres dans les rsines isocyanates (ISO 10283:2007) Bindemittel fr Beschichtungsstoffe - Bestimmung von monomeren Diisocyanaten in Isocyanatharzen (ISO 10283:2007) This European Standard was approved by CEN on 21 August 2007. CEN members are bound to co

11、mply 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 standards may be obtained on application to the CEN Manag

12、ement Centre 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 CEN Management Centre has the same status as t

13、he official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slova

14、kia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: rue de Stassart, 36 B-1050 Brussels 2007 CEN All rights of exploitation in any form and by any means reserved worldwid

15、e for CEN national Members. Ref. No. EN ISO 10283:2007: EContents Page 2 EN ISO 10283:2007 (E) Foreword 3 Introduction 4 1 Scope . 5 2 Normative references . 5 3 Terms and definitions 5 4 Principle 6 5 Reagents . 6 6 Apparatus 6 7 Sampling . 7 8 Procedure 7 8.1 Operating conditions . 7 8.2 Column co

16、nditioning 12 8.3 Gas-chromatographic determination .12 9 Expression of results .13 9.1 Determination of calibration factor 13 9.2 Calculation of the monomeric diisocyanate content 13 10 Precision .13 10.1 Repeatability (r) 13 10.2 Reproducibility (R) 14 11 Test report 14 Foreword This document (EN

17、ISO 10283:2007) has been prepared by Technical Committee ISO/TC 35 “Paints and varnishes“ in collaboration with Technical Committee CEN/TC 139 “Paints and varnishes“, the secretariat of which is held by DIN. This European Standard shall be given the status of a national standard, either by publicati

18、on of an identical text or by endorsement, at the latest by March 2008, and conflicting national standards shall be withdrawn at the latest by March 2008. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this Eu

19、ropean Standard: Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the Unit

20、ed Kingdom. Endorsement notice The text of ISO 10283:2007 has been approved by CEN as a EN ISO 10283:2007 without any modification. 3 EN ISO 10283:2007 (E) Introduction It is well-known fact that, due to the production methods used, all the commercial isocyanate resins named in this standard contain

21、 a certain amount of volatile monomeric isocyanates. This amount is generally less than 0,5 % relative to the resin as supplied. In view of the regulations relating to the handling of hazardous substances, it has become a matter of special concern that a generally accepted and applicable method of d

22、etermination should be available. This standard is not intended to present a method suitable for the analytical determination of volatile isocyanates in any form and in any quantity. The standard specifies a method confined to determining the amounts of volatile isocyanates which occur in practice i

23、n isocyanate resins, namely about 0,1 % to 0,4 %. A further objective of the standard was to develop a method for determining with adequate accuracy as many as possible of the monomeric isocyanates which occur in isocyanate resins. It detects the principle isocyanates, namely toluene diisocyanate (T

24、DI), hexamethylene diisocyanate (HDI), diphenylmethane diisocyanate (MDI) and isophorone diisocyanate (IPDI), and is a method considered by industry, authorities and institutes alike to be the state of the art. 4 EN ISO 10283:2007 (E) 1 Scope This International Standard specifies a gas-chromatograph

25、ic method for determining monomeric diisocyanates such as toluene diisocyanate1), hexamethylene diisocyanate, isophorone diisocyanate2), diphenylmethane diisocyanate3)and other diisocyanates in isocyanate resins as defined in Clause 3 and in solutions prepared from such resins, insofar as these are

26、used in the formulation of paints and similar coating materials. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced docume

27、nt (including any amendments) applies. ISO 15528, Paints, varnishes and raw materials for paints and varnishes Sampling 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 isocyanate resin synthetic resin, with or without solvent, based on aromat

28、ic, aliphatic or cycloaliphatic isocyanates containing isocyanate (NCO) groups NOTE For the purposes of this International Standard, such isocyanate resins comprise: those which are manufactured from any diisocyanate, in particular toluene diisocyanate (TDI), hexamethylene diisocyanate (HDI), isopho

29、rone diisocyanate (IPDI) or diphenylmethane diisocyanate (MDI), and which contain urethane and/or biuret and/or isocyanurate groups; those which are prepared from mixtures of the isocyanate resins given above. 1) The term “toluene diisocyanate” is used here and in the following text for 4-methyl-1,3

30、-phenylene diisocyanate (2,4-toluene diisocyanate) and 2-methyl-1,3-phenylene diisocyanate (2,6-toluene diisocyanate). 2) The term “isophorone diisocyanate” is used here and in the following text for 2-isocyanatomethyl)-3,5,5-trimethylcyclohexylisocyanate. The stereoisomers are identified at the app

31、ropriate points in the text by (I) and (II). 3) The term “diphenylmethane diisocyanate” is used here and in the following text for 4,4-diisocyanatodiphenylmethane, 2,4-diisocyanatodiphenylmethane and 2,2-diisocyanatodiphenylmethane. 5 EN ISO 10283:2007 (E) 4 Principle The content of monomeric diisoc

32、yanate in isocyanate resins is determined by gas chromatography, using tetradecane or, in the case of diisocyanates of low volatility, anthracene as the internal standard. 5 Reagents During the analysis, use only reagents of recognized analytical grade. 5.1 Ethyl acetate, anhydrous (dried with 0,5 n

33、m molecular sieve) and ethanol-free (ethanol content 0,5 but u 1 1 1 but u 2 0,5 2 but u 4 0,2 4 0,1 Weigh the test sample to the nearest 0,1 mg (mass m0) into a conical flask (6.2). Using the pipette (6.3), add 10 ml of the internal-standard solution (5.7)4). Add about 25 ml of ethyl acetate, close

34、 the conical flask and shake well to dissolve the test sample. NOTE The test sample can also be weighed to the nearest 0,1 mg into a 50 ml sample bottle fitted with a septum seal. Add about (15 0,1) mg of the internal standard to the sample bottle. Dissolve the sample in 40 ml of ethyl acetate. Exam

35、ine 1 l of this solution (test solution) by gas chromatography. The following sequence shall be observed for each determination: inject calibration solution at least twice; inject test solution twice. 4) Approx. 15 mg of the internal standard weighed to an accuracy of 0,1 mg can be used instead of t

36、he standard solution. 12 EN ISO 10283:2007 (E) 9 Expression of results 9.1 Determination of calibration factor From each calibration chromatogram, calculate the calibration factor f, using the following equation: DI StSt DImAfmA=where mStis the mass of internal standard (tetradecane or anthracene) i

37、n the internal-standard solution (5.7); mDIis the mass of monomeric diisocyanate in the reference solution (5.8); ADIis the peak area for the monomeric diisocyanate contained in the reference solution; AStis the peak area for the internal standard. 9.2 Calculation of the monomeric diisocyanate conte

38、nt Calculate the content of monomeric diisocyanate wDIfrom the peak areas, using the following equation: 12DI21mA fwmA=where m1is the mass of internal standard in the test solution; m2is the mass of test sample; A2is the peak area for the monomeric diisocyanate in the test solution; A1is the peak ar

39、ea for the internal standard in the test solution. Calculate the mean of two determinations, this mean being corrected by the average value of the calibration factor f calculated for each determination. Detection limit: 0,01 % (by mass) of the monomeric diisocyanate under the conditions specified in

40、 8.1. 10 Precision for a content of monomeric diisocyanate of (0,50 0,05) % (by mass). 10.1 Repeatability (r) The value below which the absolute difference between two single test results, each the mean of duplicates, obtained on identical material by one operator in one laboratory within a short in

41、terval of time using the standardized test method may be expected to lie with a 95 % probability is 0,02 %. 13 EN ISO 10283:2007 (E) 10.2 Reproducibility (R) The value below which the absolute difference between two test results, each the mean of duplicates, obtained on identical material by operato

42、rs in different laboratories using the standardized test method may be expected to lie with a 95 % probability is 0,05 %. 11 Test report The test report shall contain at least the following information: a) all details necessary to identify the product tested; b) a reference to this International Standard (ISO 10283); c) the individual values and means of the content of monomeric diisocyanates (as indicated in 9.2); d) any deviation from the method specified; e) the date of the test. 14 EN ISO 10283:2007 (E)

copyright@ 2008-2019 麦多课文库(www.mydoc123.com)网站版权所有
备案/许可证编号:苏ICP备17064731号-1