BS EN 15802-2009 文物保护.试验方法.静态接触角的测定.pdf
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1、- - - - EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 15802 December 2009 ICS 97.195 English Version Conservation of cultural property - Test methods - Determination of static contact angle Conservation des biens culturels - Mthodes dessai - Dtermination de langle de contact statique Erhaltun
2、g des kulturellen Erbes - Prfverfahren - Messung des statischen Kontaktwinkels This European Standard was approved by CEN on 7 November 2009. 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 nat
3、ional standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN Management Centre or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in
4、 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 the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark,
5、 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 Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION
6、 EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2009 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 15802:2009: E - - EN 15802:2009 (E) 2 Contents Page Foreword 3 Introduction .4 1 Scope 5 2 No
7、rmative references 5 3 Terms and definitions .5 4 Principle 5 6 Test equipment 6 7 Preparation of test specimens .7 7.1 Number and dimensions of test specimens .7 7.2 Pre-conditioning of test specimens .7 8 Test procedure .7 9 Expression of results 8 9.1 Calculation of the static contact angle 8 10
8、Test report 8 Annex A (informative) Physical meaning of the static contact angle . 10 Bibliography . 11 - - EN 15802:2009 (E) 3 Foreword This document (EN 15802:2009) has been prepared by Technical Committee CEN/TC 346 “Conservation of cultural property”, the secretariat of which is held by UNI. Thi
9、s 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 June 2010 and conflicting national standards shall be withdrawn at the latest by June 2010. Attention is drawn to the possibility that some of the elem
10、ents of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this Eu
11、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 United K
12、ingdom. - - EN 15802:2009 (E) 4 Introduction This test method can be applied if it does not change the value of the cultural property and follows relevant ethical codes of conservation practice. - - EN 15802:2009 (E) 5 1 Scope This European Standard specifies a method for the measurement of the stat
13、ic contact angle of a water drop on porous inorganic materials used for and constituting cultural property. The method may be applied to porous inorganic materials either untreated or subjected to any treatment or ageing. 2 Normative references The following referenced documents are indispensable fo
14、r the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. prEN 15898:2009, Conservation of cultural property Main general terms and definitions concerning conserv
15、ation of cultural property 3 Terms and definitions For the purposes of this document, the terms and definitions given in prEN 15898:2009 and the following apply. 3.1 porous inorganic materials materials including natural stones, e.g. sandstone, limestone, marble, as well as artificial materials, suc
16、h as mortar, plaster, brick and others 3.2 static contact angle angle , in degrees, formed by the surface of the specimen and the tangent to the water drop at the contact point, as shown in Figure 1 Key d diameter of the contact surface, in mm h height, in mm static contact angle, in degrees Figure
17、1 Static contact angle at time t 4 Principle Determination of the static contact angle between a water drop and the test surface of the specimen. - - EN 15802:2009 (E) 6 5 Symbols and abbreviations For the purposes of this document, the following symbols and abbreviations apply: d diameter of the co
18、ntact surface, in mm h height, in mm static contact angle, in degrees 6 Test equipment 6.1 Test equipment for the measurement of static contact angle consists of: i) an illumination source (1) that will not affect the temperature of the drop/specimen system, ii) a flat sample holder (2), iii) a drop
19、 deposition system, usually consisting of a graduated micro-pipette (3), with a flat head needle, positioned above and perpendicular to the specimen surface and able to deliver reproducible drops, iv) an optical system (4) that projects the image of the deposited water drop onto a screen (5) on whic
20、h the height of the water drop and the diameter of the contact surface can be marked with a ruler (6). This part of the instrument can consist of a camera (4) able to record the image on a screen (5) where the parameters can be measured manually or automatically. The measurement principle of most co
21、mmercial instruments available on the market is shown in Figure 2. Key 1 illumination source 2 sample holder 3 graduated micro-pipette 4 optical system 5 screen 6 ruler Figure 2 Schematic sketch of the measurement system - - EN 15802:2009 (E) 7 6.2 Sand paper with grain size of 82 m (corresponding t
22、o grit number P180 according to the FEPA1) classification). 6.3 A soft brush. 6.4 Desiccator filled with desiccant such as indicating silica gel or other drying agents. 6.5 A ventilated oven which can maintain a temperature of (60 2) C. 6.6 An analytical balance with an accuracy of 0,1 mg for sample
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- BS EN 15802-2009 文物保护.试验方法.静态接触角的测定 15802 2009 文物保护 试验 方法 静态 接触角 测定
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