欢迎来到麦多课文档分享! | 帮助中心 海量文档,免费浏览,给你所需,享你所想!
麦多课文档分享
全部分类
  • 标准规范>
  • 教学课件>
  • 考试资料>
  • 办公文档>
  • 学术论文>
  • 行业资料>
  • 易语言源码>
  • ImageVerifierCode 换一换
    首页 麦多课文档分享 > 资源分类 > PDF文档下载
    分享到微信 分享到微博 分享到QQ空间

    ASTM D5460-2002(2017) Standard Test Method for Rubber Compounding Materials&x2014 Water in Rubber Additives《橡胶复合材料的标准试验方法&x2014 橡胶添加剂中的含水量》.pdf

    • 资源ID:519870       资源大小:64.05KB        全文页数:3页
    • 资源格式: PDF        下载积分:10000积分
    快捷下载 游客一键下载
    账号登录下载
    微信登录下载
    二维码
    微信扫一扫登录
    下载资源需要10000积分(如需开发票,请勿充值!)
    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)。
    如需开发票,请勿充值!如填写123,账号就是123,密码也是123。
    支付方式: 支付宝扫码支付    微信扫码支付   
    验证码:   换一换

    加入VIP,交流精品资源
     
    账号:
    密码:
    验证码:   换一换
      忘记密码?
        
    友情提示
    2、PDF文件下载后,可能会被浏览器默认打开,此种情况可以点击浏览器菜单,保存网页到桌面,就可以正常下载了。
    3、本站不支持迅雷下载,请使用电脑自带的IE浏览器,或者360浏览器、谷歌浏览器下载即可。
    4、本站资源下载后的文档和图纸-无水印,预览文档经过压缩,下载后原文更清晰。
    5、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。

    ASTM D5460-2002(2017) Standard Test Method for Rubber Compounding Materials&x2014 Water in Rubber Additives《橡胶复合材料的标准试验方法&x2014 橡胶添加剂中的含水量》.pdf

    1、Designation: D5460 02 (Reapproved 2017)Standard Test Method forRubber Compounding MaterialsWater in RubberAdditives1This standard is issued under the fixed designation D5460; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year

    2、 of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope1.1 This test method covers a procedure for the determina-tion of water in 2-mercaptobenzothiazole sulfenamide accel-e

    3、rators by a Karl Fischer coulometric titration.1.2 The values stated in SI units are to be regarded asstandard. No other units of measurement are included in thisstandard.1.3 This standard does not purport to address all of thesafety concerns, if any, associated with its use. It is theresponsibility

    4、 of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.1.4 This international standard was developed in accor-dance with internationally recognized principles on standard-ization established in the D

    5、ecision on Principles for theDevelopment of International Standards, Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade (TBT) Committee.2. Terminology2.1 Definitions:2.1.1 inert fillerany nonwater soluble additive used as asupport, binder, processing aid, d

    6、edustant, etc., which may beused in the process of manufacture of a rubber additive.2.1.2 lota production quantity representative of a standardproduction unit.2.1.3 test portionthe actual material used in the analysis;it must be representative of the lot (see 2.1.2).3. Summary of Test Method3.1 The

    7、sulfenamide is heated in an oven to remove water.This water is directed into the titration vessel of a Karl Fischercoulometric titrator with a stream of dry air or nitrogen. Thewater collected in the titration vessel is quantified coulometri-cally. Commercial instrumentation exists to carry out this

    8、two-step procedure automatically.4. Significance and Use4.1 This test method is designed to determine the watercontent of various rubber accelerators. Since2-mercaptobenzothiazole sulfenamide is hydrolyticallyunstable, the residual water content is an important character-istic.5. Interferences5.1 Th

    9、e Karl Fischer titration is inherently unreceptive tothe analysis of ketones, aldehydes, and amines. The reagentsystems of Section 7 can be used when free amines are presentif benzoic acid is added to the titration vessel before analysis.The acid serves to adjust the apparent pH difficulties when fr

    10、eeamines are present. Add5gofbenzoic acid to the titrationvessel before starting a series of analyses. This is renewedwhenever a drift value exceeds 30 % of the microgram count orwhen a known amount of water does not produce the correctmicrograms count.5.2 Some rubber chemicals contain amines as par

    11、t of theirstructure and may release these amines during the heatingprocess.6. Apparatus6.1 Karl Fischer Coulometric Apparatus, equipped with aheating oven to remove water from the test portion placed in it.The water is directed into the titration vessel by means of astream of dry air or nitrogen. Th

    12、e evolved water is quantifiedcoulometrically. The instrument must satisfy conditions foundin 6.2 and Section 9.NOTE 1The apparatus must be used by those versed in its operation.It is not the intent or purpose of this test method to instruct the operator.This information is best obtained from manuals

    13、 supplied by the manufac-turers.6.2 Sample Containers, capable of containing 1 to4gofatest portion.6.3 Balance, capable of weighing a test portion mass to60.1 mg.6.4 Syringes and Needles, to satisfy the requirements of 8.2.1This test method is under the jurisdiction of ASTM Committee D11 on Rubberan

    14、d Rubber-like Materials and is the direct responsibility of Subcommittee D11.11on Chemical Analysis.Current edition approved May 1, 2017. Published July 2017. Originally approvedin 1993. Last previous edition approved in 2012 as D5460 02 (2012). DOI:10.1520/D5460-02R17.Copyright ASTM International,

    15、100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United StatesThis international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for theDevelopment of International Standards, Guides and

    16、 Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.17. Reagents7.1 There are a wide variety of reagents on the market forcoulometric analysis. Use the reagent system(s) recommendedby the manufacturer of the equipment to be used. The systemsmay be of t

    17、he one component type (same vessel and generatorsolutions) or the two component type (same solution for vesseland generator). Both systems were used in the results reportedin the Appendix.7.2 Benzoic Acid, reagent grade.7.3 De-Ionized Water and Commercial Water Standards.7.4 Nitrogen, Dry Air or Ine

    18、rt Gas.7.5 Pyridine-Free or Pyridine-Containing Solutions may beused. Pyridine-free solutions were used for the results reportedin the Appendix.8. Calibration8.1 Karl Fischer coulometric analyzers need no calibration.Operation is based on Faradays Law which states that onecoulomb of electricity is n

    19、eeded to electrolyze one mole of amaterial.8.2 Periodic confirmation of this is obtained by injecting aknown amount of water into the titration vessel. This mustproduce the theoretical g count within reasonable tolerances.As an example: Injection of 2.0 mm3of water should producea g count of 2000 g

    20、6 50 to 100 g.8.3 Water standards, which are commercially available, canalso be used for 8.2. Follow the manufacturers instructions forusing these standards.9. Procedure9.1 Accurately weigh a well-mixed representative test por-tion to the nearest 0.1 mg and place it in the oven container.Sample mass

    21、 will vary with water content. It is recommendedthat at least 300 g of water be detected. Follow manufactur-ers recommendations for appropriate sample mass and instru-ment settings and adjust sample mass accordingly.9.2 Appropriate titrator and oven settings follow. See theAppendix for the actual se

    22、ttings used for this test method.Coulometer and Vessel:Vessel solution pyridine-containing or pyridine-freeGenerator solution pyridine-containing or pyridine-freeDrift correction onDelay noneVessel additive 5 g benzoic acidOven Conditions:Temperature operator choiceCarried gas nitrogen, dry air, or

    23、inert gasCarrier gas flow operator choicePurge time noneDelay time operator choice9.3 Add benzoic acid to the titration vessel before beginningan analysis. Renew the acid whenever necessary, in accordancewith 7.1.9.4 Place the weighed test portion in the oven and start theanalysis. This will proceed

    24、 automatically and produce a mi-crogram count of calculation on the display at the completionof the process.9.5 Calculation:% Water 5 A 2 B!/C 3100 (1)where:A = mass of water recovered from the test portion (mg),B = mass of water from a blank if needed (mg), andC = mass of test portion (mg).10. Repo

    25、rt10.1 Report the percent water obtained from individualanalysis to two decimal places as described in this test method.11. Precision and Bias11.1 Precision and bias will be prepared when enough datais accumulated from co-operative studies.12. Keywords12.1 Karl Fischer coulometric titrator; rubber a

    26、dditive;2-mercaptobenzothiazole sulfenamide; waterAPPENDIX(Nonmandatory Information)X1. LABORATORY STUDY OF 2-MERCAPTOBENZOTHIAZOLE SULFENAMIDEX1.1 For this co-operative study, one sample of2-mercaptobenzothiazole sulfenamide was divided and sent totwo laboratories. Analysis was completed with two d

    27、ifferentinstruments with similar but slightly different instrument set-tings. Instrument settings may be found in Table X1.1.TABLE X1.1 Instruments UsedInstrument Mitsubishi PhotovoltOven temperature, C 125 110Vessel reagent pyridine free pyridine freeType solution single systemAdouble systemASample

    28、 holder aluminum foil lined glass boats glass boatsDry nitrogen flow, cm3/min 100 250300ASingle SystemSame solution for vessel and generator.Double SystemDifferent solutions for vessel and generator.D5460 02 (2017)2X1.2 Since the addition of water to the sulfenamide, at acentral source and then send

    29、ing this “wet” sample to theanalysts was not feasible, (unwanted degradation occurred), theparticipants were asked to analyze the sulfenamide initially forwater content, then add to this dried sample, a required quantityof water by means ofa5or10microliter syringe, to give a totalwater content of 0.

    30、25 % and 0.75 %. Results may be found inTable X1.2.ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin this standard. Users of this standard are expressly advised that determination of the validity of any such patent righ

    31、ts, and the riskof infringement of such rights, are entirely their own responsibility.This standard is subject to revision at any time by the responsible technical committee and must be reviewed every five years andif not revised, either reapproved or withdrawn. Your comments are invited either for

    32、revision of this standard or for additional standardsand should be addressed to ASTM International Headquarters. Your comments will receive careful consideration at a meeting of theresponsible technical committee, which you may attend. If you feel that your comments have not received a fair hearing

    33、you shouldmake your views known to the ASTM Committee on Standards, at the address shown below.This standard is copyrighted by ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959,United States. Individual reprints (single or multiple copies) of this standard may

    34、be obtained by contacting ASTM at the aboveaddress or at 610-832-9585 (phone), 610-832-9555 (fax), or serviceastm.org (e-mail); or through the ASTM website(www.astm.org). Permission rights to photocopy the standard may also be secured from the Copyright Clearance Center, 222Rosewood Drive, Danvers, MA 01923, Tel: (978) 646-2600; http:/ X1.2 Percentage of Water Recovered% Water Recovery Using This ProcedureMitsubishi PhotovoltOriginal SampleDay 1 0.06 0.06Day 1 0.06 0.05+ 0.25 % WaterDay 1 0.25 0.24Day 2 0.25 0.24+ 0.75 % WaterDay 1 0.74 0.77Day 2 0.76 0.75D5460 02 (2017)3


    注意事项

    本文(ASTM D5460-2002(2017) Standard Test Method for Rubber Compounding Materials&x2014 Water in Rubber Additives《橡胶复合材料的标准试验方法&x2014 橡胶添加剂中的含水量》.pdf)为本站会员(tireattitude366)主动上传,麦多课文档分享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档分享(点击联系客服),我们立即给予删除!




    关于我们 - 网站声明 - 网站地图 - 资源地图 - 友情链接 - 网站客服 - 联系我们

    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 

    收起
    展开