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

    ISO 5636-1-1984 Paper and board Determination of air permeance (medium range) Part 1 General method《纸和纸板 透气性的测定(中等范围) 第1部分 一般方法》.pdf

    • 资源ID:1254364       资源大小:617.95KB        全文页数:8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。

    ISO 5636-1-1984 Paper and board Determination of air permeance (medium range) Part 1 General method《纸和纸板 透气性的测定(中等范围) 第1部分 一般方法》.pdf

    1、International Standard 5636/ 1 INTERNATIONAL ORGANIZATION FOR STANDARDIZATlONWvlEYHAPOHAR OPTAHH3AUMR l-l0 CTAHAPTH3ALi Lair fvaleur moyenne) - Partie I : M or b) the rate of flow shall be measurable to an accuracy of + 5 % of the measured value. 1) IS0 5636/2, Paper and board - Determination of air

    2、 permeance (medium range) - Part 2 : Schopper m b) to ensure steady operation of the device controlling the flow of air immediately before and during the time the deter- minations are being made; c) to ensure absence of vibration which could affect air displacement; d) to ensure that the test piece

    3、is clamped uniformly without distortion; e) to ensure that the measurements are made with the ap- paratus on a level surface; f) to test half of the test pieces from one side and half from the other side. 11 Expression of results 11 .I Calculation Convert the measured values (see the annex) to give

    4、the air per- meance (PI of each test piece, in micrometres per Pascal second pm/(Pa=s)l by means of the formula V 1000 x AApf where V is the volume of air, expressed in millilitres, which passed through the test area; A is the test area, in square metres; Ap is the pressure difference, in kilopascal

    5、s; t is the test duration, in seconds. 11.2 Arithmetic mean Calculate the arithmetic mean of the air permeance, in micro- metres per Pascal second, to three significant figures. If there is evidence of a significant difference between the results for each direction of air flow through the test piece

    6、, calculate a separate arithmetic mean for each. 11.3 Standard deviation Calculate the standard deviation or coefficient of variation of the air permeance for all replicate test results to two significant figures. In the Gurley test, the pressure is specified in terms of the mass and dimensions of t

    7、he cylinder and the quality and level of the oil. 2 Copyright International Organization for Standardization Provided by IHS under license with ISONot for ResaleNo reproduction or networking permitted without license from IHS-,-,-IS0 5636/l-1984 (E) 12 Test report f) the number of test pieces tested

    8、; The test report shall include the following information : a) b) a reference to the appropriate part of IS0 5636; the date and place of testing; g) the pressure difference used, in kilopascals; h) the used; c . . duration, in seconds, or the flow c) all the information necessary for the complete id

    9、en- tification of the sample; j) the arithmetic mean or means (see 11.2); k) the standard deviation or coefficient of variation (see d) the type of instrument used; 11.3); e) the temperature and relative humidity during the test; m) any deviation from the procedure specified. Copyright International

    10、 Organization for Standardization Provided by IHS under license with ISONot for ResaleNo reproduction or networking permitted without license from IHS-,-,-IS0 5636/l-1984 (El Annex Conversion factors for different types of apparatus A.0 Introduction To obtain the air permeance of a test piece from r

    11、eadings obtained using a particular type of apparatus, the appropriate formulae given below should be used. There are inherent differences between different types of ap- paratus, for example measuring head geometry, pressure dif- ference etc. For this reason, the factors used in the formulae should

    12、not be used to convert readings made on one type of apparatus to equivalent readings on another. It is for this reason also that the type of apparatus used must always be reported. A.1 Conversion factors (see also clause 11 for symbols) A.1 .l Schopper apparatus a) Ap = 1,OOkPa V p =- t b) Ap = 250

    13、kPa 0,4 v p =- t A.l.2 Bendtsen apparatus Ap = 1,47 kPa P = 0,011 3 4 where q is the rate of flow of air, expressed in millilitres per minute, passing through the test area. A.l.3 Potts apparatus Ap = 0,98 kPa P = 0,017 0 q where q is the rate of flow of air, expressed in millilitres per minute, pas

    14、sing through the test area. A.l.4 Sheffield apparatus Ap = 10,3 kPa P = 1,62x- A where q is the rate of flow of air, expressed in millilitres per minute, passing through the test area A, in squaremillimetres. If the test area is 285 mm2 P= 0,005 68 q A.l.5 Gurley apparatus 127 p=- t A.2 Equivalent v

    15、alues The equivalent values on different apparatus of an air per- meance of 1 pm/(Pas) are given in the table. I Apparatus 1 Values Schopper 1 ml/s at 1 kPa Schopper 2,5 ml/s at 2,5 kPa Bendtsen 88 ml/min at 1,47 kPa Potts 59 ml/min at 0,98 kPa Sheffield 176 ml/min at 10,3 kPa and 285 mm2 Gurley 127

    16、 s at 1,23 kPa” * Inverse relationship. Copyright International Organization for Standardization Provided by IHS under license with ISONot for ResaleNo reproduction or networking permitted without license from IHS-,-,-This page intentionally left blank Copyright International Organization for Standa

    17、rdization Provided by IHS under license with ISONot for ResaleNo reproduction or networking permitted without license from IHS-,-,-This page intentionally left blank Copyright International Organization for Standardization Provided by IHS under license with ISONot for ResaleNo reproduction or networking permitted without license from IHS-,-,-


    注意事项

    本文(ISO 5636-1-1984 Paper and board Determination of air permeance (medium range) Part 1 General method《纸和纸板 透气性的测定(中等范围) 第1部分 一般方法》.pdf)为本站会员(proposalcash356)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