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1、BRITISH STANDARD BS EN ISO 14678:2005 Adhesives Determination of resistance to flow (sagging) The European Standard EN ISO 14678:2005 has the status of a British Standard ICS 83.180 ? Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 20 02:12:40 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN ISO
2、 14678:2005 This British Standard was published under the authority of the Standards Policy and Strategy Committee on 20 October 2005 BSI 20 October 2005 ISBN 0 580 46658 2 National foreword This British Standard is the official English language version of EN ISO 14678:2005. It is identical with ISO
3、 14678:2005. 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 secretary. Cross-references The British Standards which implement inte
4、rnational 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 Catalogue or of British Standards Online. This publication does not pur
5、port 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 text; present to the responsible international/European committ
6、ee 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 pages This document comprises a front cover, an inside front cover, the EN ISO title page, the EN ISO for
7、eword page, the ISO title page, pages ii to v, a blank page, pages 1 to 27 and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. DateComments Licensed Copy: sheffieldun sheffieldun, na, Mon Nov
8、20 02:12:40 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 14678 July 2005 ICS 83.180 English version Adhesives - Determination of resistance to flow (sagging) (ISO 14678:2005) Adhsifs - Dtermination de la rsistance au fluage (coulure) (ISO 14678:
9、2005) Klebstoffe - Bestimmung des Widerstandes gegen Flieen (Sagging) (ISO 14678:2005) This European Standard was approved by CEN on 29 April 2005. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of
10、 a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards 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 versio
11、n in any other language made by translation under the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia
12、, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMI
13、TEE FR NORMUNG Management Centre: rue de Stassart, 36 B-1050 Brussels 2005 CENAll rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 14678:2005: E Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 20 02:12:40 GMT+00:00 2006, Uncontrolle
14、d Copy, (c) BSI Foreword This European Standard (EN ISO 14678:2005) has been prepared by Technical Committee CEN/TC 193 “Adhesives“, the secretariat of which is held by AENOR, in collaboration with Technical Committee ISO/TC 61 “Plastics, Subcommittee SC 11, Products“. This European Standard shall b
15、e given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by February 2006, and conflicting national standards shall be withdrawn at the latest by February 2006. According to the CEN/CENELEC Internal Regulations, the national standards org
16、anizations of the following countries are bound to implement 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, Slovakia,
17、Slovenia, Spain, Sweden, Switzerland and United Kingdom EN ISO 14678:2005 Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 20 02:12:40 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Reference number ISO 14678:2005(E) INTERNATIONAL STANDARD ISO 14678 First edition 2005-08-15 Adhesives Determination of
18、 resistance to flow (sagging) Adhsifs Dtermination de la rsistance au fluage (coulure) EN ISO 14678:2005 Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 20 02:12:40 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ii Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 20 02:12:40 GMT+00:00 2006, Uncon
19、trolled Copy, (c) BSI iii Contents Page Foreword.iv 1 Scope 1 2 Normative references1 3 Terms and definitions .1 4 Guidance: Typical applications for the seven test methods are as follows: 2 5 Sampling.2 6 Safety 2 7 Method 1: Use of an applicator to apply a wet film2 8 Method 2: Use of a plug forme
20、r6 9 Method 3: Use of a scraper.11 10 Method 4: Use of test blocks13 11 Method 5: Flow from a lap joint17 12 Method 6: Flow of adhesive through a hole20 13 Method 7: Flow of structural adhesive films.21 Introductionv EN ISO 14678:2005 Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 20 02:12:40 G
21、MT+00:00 2006, Uncontrolled Copy, (c) BSI iv Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each memb
22、er body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Ele
23、ctrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. The main task of technical committees is to prepare International Standards. Draft International Standards adop
24、ted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. Attention is drawn to the possibility that some of the elements of this document may be the subject of pate
25、nt rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO 14678 was prepared by the European Committee for Standardization (CEN) in collaboration with Technical Committee ISO/TC 61, Plastics, Subcommittee SC 11, Products, in accordance with the Agreement on tech
26、nical cooperation between ISO and CEN (Vienna Agreement). Throughout the text of this document, read “.this European Standard.” to mean “.this International Standard.”. EN ISO 14678:2005 Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 20 02:12:40 GMT+00:00 2006, Uncontrolled Copy, (c) BSI v EN I
27、SO 14678:2005 Introduction When an adhesive joint is prepared, it is important that the applied adhesive does not flow away from the area of the joint. Flow can occur before the joint has been assembled, e.g. before solvent or water has evaporated, or after the joint has been closed, but before the
28、adhesive has set, e.g. during the curing, solidification, or drying process. The flow of an applied adhesive will be influenced by the stress applied and the duration and temperature of the bonding process. The extent of flow of an adhesive will also be influenced by the surface energies involved an
29、d the degree of roughness of the adherents. The occurrence of flow under gravity is called sagging (see Clause 3). This European Standard describes three types of test for the assessment of sagging. In the first type of test, which simulates the conditions before joint assembly, the extent of flow o
30、f an adhesive down a surface which is either vertical (Methods 1, 2 and 3) or at 60 to the horizontal (Method 4) is measured. In the second type of test, which simulates conditions after assembly (Methods 5 and 6), the flow of adhesive from a hole or slot is observed. The third type of test simulate
31、s conditions during the cure cycle for structural film adhesives (Method 7). The method appropriate to the type of adhesive and its consistency should be selected. Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 20 02:12:40 GMT+00:00 2006, Uncontrolled Copy, (c) BSI blank Licensed Copy: sheffiel
32、dun sheffieldun, na, Mon Nov 20 02:12:40 GMT+00:00 2006, Uncontrolled Copy, (c) BSI 1 1 Scope This European Standard describes seven methods for the assessment of the flow characteristics of adhesives after application at room temperature and during cure, by the measurement of sagging. These methods
33、 may be used both for specifying an adhesive and for quality control purposes. 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 refe
34、renced document (including any amendments) applies. EN 923:1998, Adhesives Terms and definitions EN 1067, Adhesives Examination and preparation of samples for testing EN 13887, Structural Adhesives - Guidelines for surface preparation of metals and plastics prior to adhesive bonding EN ISO 15605, Ad
35、hesives - Sampling (ISO 15605:2000) 3 Terms and definitions For the purposes of this European Standard, the terms and definitions given in EN 923:1998 together with the following apply. 3.1 flow deformation of an adhesive or adhesive layer 3.2 sagging downward movement of an adhesive film between th
36、e time of application and setting resulting in an uneven coating having a thick lower edge NOTE The resulting sagging is usually restricted to a local area of a vertical surface. EN ISO 14678:2005 Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 20 02:12:40 GMT+00:00 2006, Uncontrolled Copy, (c)
37、BSI 2 4 Guidance: Typical applications for the seven test methods are as follows: * Method 1: Use of an applicator to apply a wet film (see Clause 7) - Resistance to flow after application. * Method 2: Use of a plug former (see Clause 8) - Resistance to sagging after application. * Method 3: Use of
38、a scraper (see Clause 9) to apply a film of adhesive - Resistance to flow after application during cure. * Method 4: Use of test blocks (see Clause 10) to measure static flow of adhesives after application and during cure. * Method 5: Flow from a lap joint (see Clause 11) - Resistance to flow after
39、application. * Method 6: Flow of adhesive through a hole (see Clause 12) - Resistance to dripping after application. * Method 7: Flow of structural adhesive films (see Clause 13) - Resistance to flow during the cure cycle. 5 Sampling Take a sample of the product to be tested in accordance with EN IS
40、O 15605. Examine and prepare this sample for testing in accordance with EN 1067, where applicable, depending on which of the seven test methods is to be employed. 6 Safety Persons using this standard shall be familiar with normal laboratory practice. This standard does not purport to address all the
41、 safety problems, if any, associated with its use. It is responsibility of the user to establish safety and health practices and to ensure compliance with any European and national regulatory conditions. 7 Method 1: Use of an applicator to apply a wet film 7.1 Principle A wet film of the adhesive of
42、 defined thickness and shape is applied to a flat horizontal surface of a substrate using an applicator. After application the test panel is placed vertically in the test atmosphere for a specified time. The extent of sagging of the applied adhesive is measured (using the top edge of the test panel
43、as a reference). 7.2 Supplementary information This method of test requires that the following supplementary information shall be specified when the method is performed: a) description of the test substrate; b) procedure for preparation of the test surface; c) details of the conditioning atmosphere;
44、 EN ISO 14678:2005 Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 20 02:12:40 GMT+00:00 2006, Uncontrolled Copy, (c) BSI 3 d) details of the test atmosphere; e) temperature; f) method of mixing of two-component adhesives and the time between mixing and application; g) method of application of t
45、he adhesive and the applicator gap size; NOTE The wet film thickness given by an applicator is generally less than the depth of the gap. h) duration of the test. 7.3 Apparatus and materials 7.3.1 Test panel(s), of glass or other specified material. Dimensions of approximately (300 200) mm are conven
46、ient. Sufficient panels to allow for three strips of adhesive of similar thickness are required. 7.3.2 Applicator(s), of different gap sizes (or stencils and suitable applicators, if the nature of the adhesive requires this apparatus). 7.3.3 Enclosure(s), to provide the specified conditioning and/or
47、 test atmospheres. 7.4 Conditioning and pretreatment Cut test panels as required. Thoroughly clean each panel and carry out any specified pretreatment. Condition the adhesive and the prepared test panels (if required) in the specified conditioning atmosphere. NOTE If not otherwise specified, the rec
48、ommended conditions are (23 2) C and (50 5) % RH. 7.5 Procedure Place a prepared test panel in a horizontal position and apply strips of the adhesive parallel to the longer edge (see Figure 1). Mark one of the longer edges as the reference edge and, as quickly as possible, measure the distance in mi
49、llimetres of the further edge of each strip from it. EN ISO 14678:2005 Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 20 02:12:40 GMT+00:00 2006, Uncontrolled Copy, (c) BSI 4 Key 1 Reference edge 2 Applicator 3 Test panel 4 Extruded strips Figure 1 Applicator for preparing adhesive strips (Method 1: Use of an applicator to apply a wet film) Taking care to avoid vibration, mount the test panel within 2 of the vertical so that the strips are horizontal and the reference edge is at
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