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

    EN 14257-2006 en Adhesives - Wood adhesives - Determination of tensile strength of lap joints at elevated temperature (WATT -91)《粘合剂 木材粘合剂 温度升高时搭接接头拉伸强度的测定(WATT -91)》.pdf

    • 资源ID:708883       资源大小:225.60KB        全文页数:10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。

    EN 14257-2006 en Adhesives - Wood adhesives - Determination of tensile strength of lap joints at elevated temperature (WATT -91)《粘合剂 木材粘合剂 温度升高时搭接接头拉伸强度的测定(WATT -91)》.pdf

    1、BRITISH STANDARDBS EN14257:2006Adhesives Wood adhesives Determination of tensile strength of lap joints at elevated temperature (WATT 91)The European Standard EN 14257:2006 has the status of a British StandardICS 83.180g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g

    2、54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58BS EN 14257:2006This British Standard was published under the authority of the Standards Policy and Strategy Committee on 30 June 2006 BSI 2006ISBN 0 580 48871 3National forewordThi

    3、s British Standard is the official English language version of EN 14257:2006. The UK participation in its preparation was entrusted to Technical Committee PRI/52, Adhesives, which has the responsibility to: A list of organizations represented on this committee can be obtained on request to its secre

    4、tary.Cross-referencesThe British Standards which implement international or European publications referred to in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogu

    5、e or of British Standards Online.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the t

    6、ext; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep UK interests informed; monitor related international and European developments and promulgate them in the UK.Summary of pagesThis document comprises a front cover,

    7、an inside front cover, the EN title page, pages 2 to 6, an inside back cover and a back cover.The BSI copyright notice displayed in this document indicates when the document was last issued.Amendments issued since publicationAmd. No. Date CommentsEUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN 142

    8、57June 2006ICS 83.180English VersionAdhesives - Wood adhesives - Determination of tensile strengthof lap joints at elevated temperature (WATT 91)Adhsifs - Adhsifs pour bois - Dtermination de larsistance en traction temprature leve des joints recouvrement (essai WATT 91)Klebstoffe - Holzklebstoffe -

    9、Bestimmung der Klebfestigkeitvon Lngsklebungen im Zugversuch in der Wrme (WATT91)This European Standard was approved by CEN on 21 November 2005.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a na

    10、tional standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards 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 an

    11、y other language made by translationunder the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the officialversions.CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland,

    12、 France,Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania,Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR

    13、 NORMUNGManagement Centre: rue de Stassart, 36 B-1050 Brussels 2006 CEN All rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 14257:2006: EEN 14257:2006 (E) 2 Contents Page Foreword3 1 Scope.4 2 Normative references 4 3 Terms and definitions4

    14、4 Principle 4 5 Apparatus .4 6 Sample preparation5 6.1 Preparation of the bonded test pieces.5 6.2 Conditioning bonded assemblies or test pieces 5 7 Test procedure .5 8 Calculation and expression of results.5 9 Test report 5 9.1 General5 9.2 The adhesive 6 9.3 Preparation of the test pieces and test

    15、ing procedures6 9.4 Test results .6 EN 14257:2006(E) 3 Foreword This European Standard (EN 14257:2006) has been prepared by Technical Committee CEN/TC 193 “Adhesives”, the secretariat of which is held by AENOR. This European Standard shall be given the status of a national standard, either by public

    16、ation of an identical text or by endorsement, at the latest by December 2006, and conflicting national standards shall be withdrawn at the latest by December 2006. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implemen

    17、t this European Standard: Austria, Belgium, 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 United Ki

    18、ngdom. EN 14257:2006 (E) 4 SAFETY STATEMENT: Persons using this European Standard should be familiar with the normal laboratory practice, in principle. This European Standard does not purport to address all of the safety problems, if any, associated with its use. It is the responsibility of the user

    19、 to establish appropriate safety and health practices and to ensure compliance with any regulatory conditions. 1 Scope This European Standard specifies a method for testing the strength of wood adhesives at 80 C. NOTE The procedure described is based on a test developed in Germany known originally a

    20、s the WATT 91 test. It uses the test piece described in EN 205. 2 Normative references The following referenced documents are indispensable for the application of this European Standard. For dated references, only the edition cited applies. For undated references, the latest edition of the reference

    21、d document (including any amendments) applies. EN 205, Adhesives Wood adhesives for non-structural applications Determination of tensile shear strength of lap joints EN 923, Adhesives Terms and definitions ISO 5893, Rubber and plastics test equipment Tensile, flexural and compression types (constant

    22、 rate of traverse) Specification 3 Terms and definitions For the purposes of this European Standard, the terms and definitions given in EN 923 apply. 4 Principle A symmetrical bonded lap joint between two wooden adherents is subjected to a period of heating at controlled temperature and then straine

    23、d to rupture by a longitudinal force parallel to the grain. The heating test is normally carried out on thin (0,1 mm) glue lines. However if the manufacturer makes specific claims for the gap filling properties of the test adhesive then the heating test is carried out with both thin and thick (1 mm)

    24、 glue lines. 5 Apparatus 5.1 Tensile testing machine, as described in ISO 5893, capable of maintaining a constant strain rate of 50 mm/min. The jaws shall be mounted in such a way as to permit self-alignment whilst the test pieces are being pulled. 5.2 Fan assisted oven, capable of maintaining a tem

    25、perature of (80 2) C. EN 14257:2006(E) 5 6 Sample preparation 6.1 Preparation of the bonded test pieces Prepare 10 test pieces in accordance with the procedure described in EN 205. 6.2 Conditioning bonded assemblies or test pieces After bonding and pressing, condition the assembly or test pieces for

    26、 a minimum of seven days in a standard atmosphere of either (20 2) C, (65 5) % relative humidity 20/65 or (23 2) C, (50 5) % relative humidity 23/50. 7 Test procedure Place each test piece, in a preheated fan oven, at (80 2) C, for (60 2) min and then test it to fracture in a tensile testing machine

    27、. NOTE In order to allow time for removal and testing it can be helpful to place the test pieces into the oven at set intervals, and to remove them in sequence after each has been in the oven for 1 h. Whilst in the oven, the test pieces shall be well spaced in the circulating air. The time between r

    28、emoval of the test piece from the oven and the start of the test (beginning of the application of the load) shall be (9 1) s. Clamp the ends of the test pieces in the jaws of the tensile testing machine to a length of 40 mm to 50 mm. Load the test piece to fracture and determine the maximum force Fm

    29、ax. The rate of separation of the jaws shall be 50 mm/min. 8 Calculation and expression of results Calculate the hot strength, , of the joint in N/mm2using the equation: maxFA = where Fmaxis maximum force in Newtons; A is area of bonded test surface in square millimetres. 9 Test report 9.1 General A

    30、 reference to this European Standard, i.e. EN 14257 and the items listed in 9.2 to 9.4 shall be recorded in the test report. EN 14257:2006 (E) 6 9.2 The adhesive a) Type and origin of the adhesive; b) batch number or other marking of uniquely identifying the adhesive used; c) number of components an

    31、d working methods (procedure of preparing and applying of adhesive); d) durability class (for information only). 9.3 Preparation of the test pieces and testing procedures a) Species of wood with botanical name; b) moisture content of wood relative to oven-dry mass; c) characteristic data relating to

    32、 the bonding procedure (for instance information about the amount of glue applied, the open and closed assembly time, pressing pressure, pressing temperature, pressing time); d) special treatment of the surface of the boards to be bonded; e) time between the termination of pressing and the cutting o

    33、f the test pieces; f) indication whether test pieces with a thin (0,1 mm) bond-line or with a thick (1 mm) bond-line have been used; g) number of bonded test pieces; h) conditioning atmosphere used; i) rate of traverse or the time required to rupture. 9.4 Test results a) Hot strength in Newton per s

    34、quare millimetre, rounded to nearest 0,1 N/mm2of each of the 10 test pieces; b) mean and standard deviation of the 10 values of hot strength and coefficient of variation (expressed as percentage); c) for each test piece, an indication of the proportion of wood failure graded as follows: 0 %, 25 %, 5

    35、0 %, 75 %, 100 % and mean percentage wood failure for the group of 10 test pieces; d) any further particularities in the appearance of the bounded surfaces; e) any deviation from this European Standard; f) date of test and details of the testing organisation. blankBS EN 14257:2006BSI389 Chiswick Hig

    36、h RoadLondonW4 4ALBSI British Standards InstitutionBSI is the independent national body responsible for preparing British Standards. It presents the UK view on standards in Europe and at the international level. It is incorporated by Royal Charter.RevisionsBritish Standards are updated by amendment

    37、or revision. Users of British Standards should make sure that they possess the latest amendments or editions.It is the constant aim of BSI to improve the quality of our products and services. We would be grateful if anyone finding an inaccuracy or ambiguity while using this British Standard would in

    38、form the Secretary of the technical committee responsible, the identity of which can be found on the inside front cover. Tel: +44 (0)20 8996 9000. Fax: +44 (0)20 8996 7400.BSI offers members an individual updating service called PLUS which ensures that subscribers automatically receive the latest ed

    39、itions of standards.Buying standardsOrders for all BSI, international and foreign standards publications should be addressed to Customer Services. Tel: +44 (0)20 8996 9001. Fax: +44 (0)20 8996 7001. Email: ordersbsi-. Standards are also available from the BSI website at http:/www.bsi-.In response to

    40、 orders for international standards, it is BSI policy to supply the BSI implementation of those that have been published as British Standards, unless otherwise requested.Information on standardsBSI provides a wide range of information on national, European and international standards through its Lib

    41、rary and its Technical Help to Exporters Service. Various BSI electronic information services are also available which give details on all its products and services. Contact the Information Centre. Tel: +44 (0)20 8996 7111. Fax: +44 (0)20 8996 7048. Email: infobsi-.Subscribing members of BSI are kep

    42、t up to date with standards developments and receive substantial discounts on the purchase price of standards. For details of these and other benefits contact Membership Administration. Tel: +44 (0)20 8996 7002. Fax: +44 (0)20 8996 7001. Email: membershipbsi-.Information regarding online access to B

    43、ritish Standards via British Standards Online can be found at http:/www.bsi- information about BSI is available on the BSI website at http:/www.bsi-.CopyrightCopyright subsists in all BSI publications. BSI also holds the copyright, in the UK, of the publications of the international standardization

    44、bodies. Except as permitted under the Copyright, Designs and Patents Act 1988 no extract may be reproduced, stored in a retrieval system or transmitted in any form or by any means electronic, photocopying, recording or otherwise without prior written permission from BSI.This does not preclude the fr

    45、ee use, in the course of implementing the standard, of necessary details such as symbols, and size, type or grade designations. If these details are to be used for any other purpose than implementation then the prior written permission of BSI must be obtained.Details and advice can be obtained from the Copyright & Licensing Manager. Tel: +44 (0)20 8996 7070. Fax: +44 (0)20 8996 7553. Email: copyrightbsi-.


    注意事项

    本文(EN 14257-2006 en Adhesives - Wood adhesives - Determination of tensile strength of lap joints at elevated temperature (WATT -91)《粘合剂 木材粘合剂 温度升高时搭接接头拉伸强度的测定(WATT -91)》.pdf)为本站会员(arrownail386)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