1、 ISO 2015 Structural adhesives Determination of the pot life (working life) of multi- component adhesives Adhsifs structuraux Dtermination de la dure de vie en pot (dlai dutilisation) dadhsifs multicomposants INTERNATIONAL STANDARD ISO 10364 Third edition 2015-09-15 Reference number ISO 10364:2015(E
2、) ISO 10364:2015(E)ii ISO 2015 All rights reserved COPYRIGHT PROTECTED DOCUMENT ISO 2015, Published in Switzerland All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including pho
3、tocopying, or posting on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below or ISOs member body in the country of the requester. ISO copyright office Ch. de Blandonnet 8 CP 401 CH-1214 Vernier, Geneva, Switzerland Tel. +41
4、22 749 01 11 Fax +41 22 749 09 47 copyrightiso.org www.iso.org ISO 10364:2015(E)Foreword iv 1 Scope . 1 2 Normative references 1 3 T erms and definitions . 1 4 Principle 2 5 Apparatus . 2 6 Procedure. 3 6.1 Sampling . 3 6.2 Method 1: Determination from the change in apparent viscosity 3 6.3 Method 2
5、: Determination from the change in extrusion rate . 4 6.4 Method 3: Determination from the reaction temperature 5 6.5 Method 4: Determination by means of a drying recorder . 5 7 Expression of results 6 8 Test report . 6 Bibliography 8 ISO 2015 All rights reserved iii Contents Page ISO 10364:2015(E)
6、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 member body interested in a subject for which a t
7、echnical 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 Electrotechnical Commission (IEC) on all matters
8、 of electrotechnical standardization. The procedures used to develop this document and those intended for its further maintenance are described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the different types of ISO documents should be noted. This docum
9、ent was drafted in accordance with the editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives). Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all su
10、ch patent rights. Details of any patent rights identified during the development of the document will be in the Introduction and/or on the ISO list of patent declarations received (see www.iso.org/patents). Any trade name used in this document is information given for the convenience of users and do
11、es not constitute an endorsement. For an explanation on the meaning of ISO specific terms and expressions related to conformity assessment, as well as information about ISOs adherence to the WTO principles in the Technical Barriers to Trade (TBT) see the following URL: Foreword - Supplementary infor
12、mation. The committee responsible for this document is ISO/TC 61, Plastics, Subcommittee SC 11, Products. This third edition cancels and replaces the second edition (ISO 10364:2007), which has been technically revised.iv ISO 2015 All rights reserved INTERNATIONAL ST ANDARD ISO 10364:2015(E) Structur
13、al adhesives Determination of the pot life (working life) of multi-component adhesives SAFETY STATEMENT Persons using this International Standard should be familiar with normal laboratory practice, if applicable. This International Standard does not purport to address all of the safety concerns, if
14、any, associated with its use. It is the responsibility of the user to establish appropriate safety and health practices and to ensure compliance with any regulatory requirements. 1 Scope This International Standard specifies methods for determining the pot life of multi-part adhesives in order to be
15、 able to determine whether the pot life conforms to the minimum specified working life required of an adhesive. For the purposes of simplification, the term “pot life” is deemed to have the same meaning as “working life” and will be used to represent both throughout this International Standard. Meth
16、ods described to measure the property provide different answers. So the results shall be specified with respect to the method used. The test methods described are suitable for assessing all multipart adhesives, and especially epoxy based and polyurethane based adhesives, but they are not suitable fo
17、r some acrylic-based adhesives. NOTE 1 Some of the methods described in this International Standard can also be suitable for determination of working life of one-part adhesives that react to humidity (e.g. PUR prepolymers). NOTE 2 This International Standard can also be used for assessing non-struct
18、ural adhesives. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (inc
19、luding any amendments) applies. ISO 472, Plastics Vocabulary ISO 2555, Plastics Resins in the liquid state or as emulsions or dispersions Determination of apparent viscosity by the Brookfield Test method ISO 3219, Plastics Polymers/resins in the liquid state or as emulsions or dispersions Determinat
20、ion of viscosity using a rotational viscometer with defined shear rate ISO 15605, Adhesives Sampling 3 T erms a nd definiti ons For the purposes of this document, the terms and definitions given in ISO 472 and the following apply. 3.1 pot life working life maximum period of time during which a multi
21、-part adhesive can be used after mixing the components ISO 2015 All rights reserved 1 ISO 10364:2015(E) 4 Principle This International Standard specifies four methods for the determination of the pot life of multi- part adhesives. In method 1, the pot life is determined from the increase in viscosit
22、y of the adhesive as it reacts. This method is not suitable for the determination of pot lives that are shorter than 5 min. In method 2, the pot life is determined from the decrease in the mass of mixed adhesive which is extruded in unit time under standard conditions. This method is not suitable fo
23、r the determination of pot lives that are shorter than 5 min. In method 3, the pot life is determined as the time taken by the mixed adhesive to reach a defined temperature, the so-called critical temperature. This method is applicable to all multi-part systems. In method 4, the working live of low
24、viscose, self-levelling two part adhesives, or one-part moisture curing adhesives is determined by means of the film formation point and the drying point. A thin weight- loaded pin (“needle”) is drawn at a constant speed through a thin layer of the respective adhesive. The time at which the trace, g
25、enerated by the needle, is no longer levelled out by the still flowing adhesive is defined as film formation time while the point at which the needle lifts out of the adhesive and continues gliding on the film surface without leaving any marks is defined as film drying time. 5 Apparatus 5.1 Balance,
26、 capable of weighing up to (500 0,1) g for methods 1 and 2 and up to (100 0,1) g for methods 3, and 4. 5.2 Beaker, squat shape, plain bottom of appropriate seize, made of a material which does not react with the adhesive under test, with a wall thickness which does not exceed 1 mm. 5.3 Spatula, made
27、 of a material which does not react with the adhesive under test. 5.4 Rotational viscometer, as specified in ISO 2555 or ISO 3219. 5.5 Water bath, capable of being maintained at constant temperature to within 0,1 C for methods 2 and 3 and within 0,2 C for method 4 throughout the temperature range 15
28、 C to 30 C. 5.6 Stopwatch, accurate to 1 s. 5.7 Test enclosure, capable of being maintained at the test temperature and, if necessary, at a relative humidity of (50 5) %. 5.8 Disposable plastic cartridges, internal diameter 47 mm, length 210 mm, and fitted with a threaded end fitting and a piston, b
29、oth cartridge, and piston being made of a material which does not react with the adhesive under test. 5.9 Stirrer, with a rigid, helical stirrer blade made of a material which does not react with the adhesive under test. 5.10 Stirrer motor, electrically or pneumatically powered, whose speed can be r
30、egulated between 0 min 1and 1 000 min 1 . 5.11 Extrusion nozzle, made of material which does not react with the adhesive under test, capable of being screwed onto the end fitting of the cartridge (5.8). The diameter of the nozzles extrusion orifice shall be suitable for dispensing the mixed adhesive
31、. An orifice diameter of 3 mm shall be used.2 ISO 2015 All rights reserved ISO 10364:2015(E) 5.12 Extrusion gun, powered by compressed air, suitable for use with the cartridge (5.8). 5.13 Pressure gauge, capable of measuring air pressures up to 500 kPa with an accuracy of 10 kPa. 5.14 Tared aluminiu
32、m-foil dishes, of suitable capacity. 5.15 Surgical blade, with 250 m film thickness and a length of 20 mm. 5.16 Spreader, capable of spreading a layer of adhesive approximately 1 mm thick. 5.17 Thermocouple, accurate to 1 C, with a suitable recording device. 5.18 Gauge, with centimetre and millimetr
33、e grading and a minimum length of 30 mm. 5.19 Drying recorder, with several (e.g. six or 10) sample holders arranged in parallel and accompanying motor driven linear moving needle holders. 5.20 Steel pins, 1 mm in diameter, which fit into the needle holders and are rounded at the front face. 5.21 Dr
34、illed weight stone, with a mass of 10 g that can be attached to the needle. 5.22 Flat glass ledge, 300 mm 25 mm 3 mm. 5.23 Conditioning chamber, of at least category 2 that is able to maintain a temperature of (23 2) C and a relative humidity of (50 5) %. 6 Procedure 6.1 Sampling Each component of t
35、he adhesive shall be sampled, prepared and examined in accordance with ISO 15605. For each of the four methods given in 6.2 to 6.5, take at least three samples for testing. 6.2 Method 1: Determination from the change in apparent viscosity In principle, each rotational viscometer, equipped either wit
36、h a cylindrical, a cone-plate, or a plate-plate measuring system, capable of handling the expected viscosities can be used. It shall be differentiated between cylindrical measuring systems with a narrow gap between the two coaxial surfaces of which one is rotating and the other remains static and th
37、ose, like Brookfiled having a large, so to say, infinite gap. While the first require typically with app. 10 ml a small amount of adhesive such systems are together with cone-plate and plate-plate measuring systems suitable for adhesives showing a relative short pot life. The latter, like Brookfield
38、, require, with typically 300 ml, a significantly larger amount and are therefore not suitable for fast-reacting adhesives or adhesives showing a high exotherm. In case the adhesive contains mineral fillers, either cylindrical or a plate-plate system should be used. The use of cone-plate systems sho
39、uld be limited to un-filled adhesives. The use of a disposable measuring system, especially a disposable static measuring chamber, is recommended to avoid the time consuming cleaning operation. Condition the components of the adhesive separately using the water bath (5.5) and bring each of the compo
40、nents to an agreed, uniform temperature. Then weigh the individual components into a beaker (5.2) of appropriate size in the proportions specified for the particular adhesive under test. NOTE (23 2) C is commonly used. ISO 2015 All rights reserved 3 ISO 10364:2015(E) The amount of mixture depends on
41、 the amount required by the specific viscometer used. In all cases, a sufficient amount to allow a fast easy transfer into the measuring system shall be prepared. Start the stopwatch (5.6) and mix the test sample with the square (not rounded) end of the spatula (5.3) for (60 10) s. Take care that th
42、e areas in the angle between the side and bottom of the beaker are well mixed and avoid mixing-in of air. Upon completion of mixing, immediately transfer the mixed adhesive into the measuring system avoiding incorporation of air bubbles and start measuring the viscosity of the adhesive using the vis
43、cometer (5.4 might need to be extended). As an alternative to manually metering and mixing the individual components, the adhesive can be dispensed directly into the measuring system from a two-part cartridge through a static mixer following the procedure prescribed by the adhesive supplier. Prior t
44、o dispensing, the adhesive shall be conditioned in a conditioning chamber. Start the stopwatch at the time when dispense is started. Depending on the viscometer used, readings should be taken at appropriate intervals or the viscosity- time graph is recorded. Typically, the pot life of the adhesive i
45、s defined as the time difference between start of mixing and the time when a fixed agreed viscosity, e.g. 100 000 mPas, is reached. It is also possible to define the end point as a fixed agreed multiple, e.g. the double of the starting viscosity. In this case, the first viscosity measurement after m
46、ixing is taken as the starting point. Differences in the time required for mixing and transferring the adhesive into the measuring system will have, depending on the kinetics of the crosslinking reaction, a more or less effect on the test result. The number of measurements, as well as the degree of
47、shear during mixing and during the measurement itself, can have an influence on the viscosity and hence, the pot life. Therefore, it is recommended that the measurement interval, as well as the mixing speed and the rotational speed of the viscometer, shall be selected to suit the adhesive under test
48、. The test report according to Clause 8 should express the following: pot life result expressed in hours/minutes/seconds; measuring system used; shear conditions: either shear rate or shear speed, in mm 1 ; continuous or interrupted shear; if interrupted, shear time intervals between and duration of
49、 shear periods; time intervals between the individual readings; conditioning temperature; mix ratio; total amount of adhesive mixed; amount of adhesive transferred into the measuring system. 6.3 Method 2: Determination from the change in extrusion rate Using the water bath (5.5) in the test enclosure (5.7), bring each of the components to an agreed, uniform temperature. NOTE 1 (23 2) C is commonly used. Prepare a sample of the adhesive in accordance with the manufacturers ins
