1、 g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58ICS 83.180Structural adhesives A standard database of propertiesBRITISH STANDARDBS ISO 17194:2007BS
2、 ISO 17194:2007This British Standard was published under the authority of the Standards Policy and Strategy Committee on 30 April 2007 BSI 2007ISBN 978 0 580 50490 7Amendments issued since publicationAmd. No. Date Commentscontract. Users are responsible for its correct application.Compliance with a
3、British Standard cannot confer immunity from legal obligations.National forewordThis British Standard was published by BSI. It is the UK implementation of ISO 17194:2007.The UK participation in its preparation was entrusted to Technical Committee PRI/52, Adhesives.A list of organizations represented
4、 on PRI/52 can be obtained on request to its secretary.This publication does not purport to include all the necessary provisions of a Reference numberISO 17194:2007(E)INTERNATIONAL STANDARD ISO17194First edition2007-03-15Structural adhesives A standard database of properties Adhsifs structuraux Base
5、 de donnes des caractristiques BS ISO 17194:2007ii iiiContents Page Foreword iv Introduction v 1 Scope . 1 2 Normative references . 1 3 Principle. 2 4 Test specimens . 2 5 Test conditions . 2 6 Test procedures 2 6.1 Basic properties 2 6.2 Durability in different environments. 4 6.3 A simple stress a
6、nalysis 4 7 Precision 5 Bibliography . 6 BS ISO 17194:2007iv 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 commi
7、ttees. Each member 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 I
8、nternational Electrotechnical 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 Internationa
9、l Standards adopted 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
10、 subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO 17194 was prepared by Technical Committee ISO/TC 61, Plastics, Subcommittee SC 11, Products. BS ISO 17194:2007vIntroduction Over recent years, there has been an increase in the use of comp
11、uter methods for the selection and evaluation of structural adhesives and for assistance with the manufacture and design of joints with these materials. The data sheets from materials suppliers generally do not supply all the property data that are needed to support the application of these methods.
12、 This International Standard specifies a set of basic properties for adhesives commonly required for the use of these materials in a wide range of applications. Test methods and test conditions are recommended for the measurement of the data to enable traceability of presented values. For each prope
13、rty, a single (preferred) test method and specific test conditions are identified in order to improve the comparability of data on different materials generated by different data suppliers. In selecting the contents for this database, attempts have been made to find a balance in the quantity of data
14、 specified. Too much and data suppliers will be reluctant to produce the data, too little and the database has limited value. The aim is therefore not to present a comprehensive list of properties for adhesives but to be selective in identifying the most important properties that are needed for the
15、use of adhesives for different applications. It should be noted that many adhesives have been developed with special properties for a particular application. It is possible that these properties will not be specified in the list associated with this International Standard. However, scope has been in
16、cluded within this standard for the presentation of additional data under test conditions identified by the data supplier. In this way, the special properties of the adhesive can be presented with the basic data. BS ISO 17194:2007blank1Structural adhesives A standard database of properties 1 Scope T
17、his International Standard specifies a set of basic properties commonly required for the selection and use of structural adhesives in different applications. ISO standard test methods and test conditions are also recommended for the measurement of these data to facilitate traceability of recorded va
18、lues (see Introduction). 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 referenced document (including any amendments) applies. I
19、SO 62, Plastics Determination of water absorption ISO 527-1:1993, Plastics Determination of tensile properties Part 1: General principles ISO 527-2, Plastics Determination of tensile properties Part 2: Test conditions for moulding and extrusion plastics ISO 868, Plastics and ebonite Determination of
20、 indentation hardness by means of a durometer (Shore hardness) ISO 1183 (all parts), Plastics Methods for determining the density of non-cellular plastics ISO 1817, Rubber, vulcanized Determination of the effect of liquids ISO 2555, Plastics Resins in the liquid state or as emulsions or dispersions
21、Determination of apparent viscosity by the Brookfield Test method ISO 2577, Plastics Thermosetting moulding materials Determination of shrinkage ISO 3219, Plastics Polymers/resins in the liquid state or as emulsions or dispersions Determination of viscosity using a rotational viscometer with defined
22、 shear rate ISO 4578, Adhesives Determination of peel resistance of high-strength adhesive bonds Floating-roller method ISO 4587, Adhesives Determination of tensile lap-shear strength of rigid-to-rigid bonded assemblies ISO 6721-4, Plastics Determination of dynamic mechanical properties Part 4: Tens
23、ile vibration Non-resonance method ISO 6721-5, Plastics Determination of dynamic mechanical properties Part 5: Flexural vibration Non-resonance method ISO 9142, Adhesives Guide to the selection of standard laboratory ageing conditions for testing bonded joints BS ISO 17194:20072 ISO 10364, Adhesives
24、 Determination of working life (pot life) of multi-component adhesives ISO 11343, Adhesives Determination of dynamic resistance to cleavage of high-strength adhesive bonds under impact conditions Wedge impact method ISO 11357-2, Plastics Differential scanning calorimetry (DSC) Part 2: Determination
25、of glass transition temperature ISO 11359-2, Plastics Thermomechanical analysis (TMA) Part 2: Determination of coefficient of linear thermal expansion and glass transition temperature ISO 15166-1, Adhesives Methods of preparing bulk specimens Part 1: Two-part systems ISO 15166-2, Adhesives Methods o
26、f preparing bulk specimens Part 2: Elevated-temperature-curing one-part systems ISO 17212, Structural adhesives Guidelines for the surface preparation of metals and plastics prior to adhesive bonding IEC 60093, Methods of test for volume resistivity and surface resistivity of solid electrical insula
27、ting materials IEC 60243-1, Electrical strength of insulating materials Test methods Part 1: Tests at power frequencies 3 Principle A list is presented of properties that are generally useful for the selection and application of structural adhesives. Recommended test methods and test conditions are
28、given for each property to help in the determination of values and to promote the presentation of traceable and comparable data. 4 Test specimens Where possible, use the test specimens recommended in the test method standards employed to measure the properties given in Tables 1, 2 and 3. If alternat
29、ive test methods are used, the test method reference shall be recorded with the results. The preparation of test specimens shall be as specified in ISO 17212 for joint specimens and ISO 15166-1 or ISO 15166-2 for bulk specimens. Since the properties of adhesives generally depend on the concentration
30、 of absorbed water, specimens shall be stored dry or in an atmosphere of (50 10) % RH at (23 2) C prior to testing, for a sufficient time to reach zero or equilibrium water content as indicated by no significant further changes in the mass of the specimen with storage time. 5 Test conditions Where p
31、ossible, use the test conditions specified for each property in Tables 1, 2 and 3. If alternative test conditions are used, these shall be recorded with the results. 6 Test procedures 6.1 Basic properties Test methods and test conditions recommended for the acquisition of data for basic properties a
32、re given in Table 1. The measurement temperature is (23 2) C. For measurements obtained at other temperatures, record the temperature with the result. BS ISO 17194:20073Table 1 Basic properties at 23 C Record cure temperature, cure time, post-cure temperature and post-cure time used for specimen pre
33、paration. Record also whether specimens have been stored dry or at 50 % RH prior to testing. Property Units Test method Additional conditions Tensile modulus GPa Stress at failure MPa Strain at failure % See Note 1. Yield stress MPa Yield strain % ISO 527-2 See Note 2. Lap shear strength MPa ISO 458
34、7 Record thickness of adhesive layer. Record adherend material and surface treatment (see ISO 17212). T-peel strength MPa ISO 4578 Record adherend material and surface treatment (see ISO 17212). Impact resistance kN/m ISO 11343 See Note 3 Use symmetrical wedge. Hardness Shore A or D ISO 868 3 s dura
35、tion. Glass transition temperature C ISO 11357-2 Dynamic mechanical modulus vs temperature (DMTA) curve GPa ISO 6721-4 or ISO 6721-5 From 40 C to above Tg. Thermal expansion coefficient K1ISO 11359-2 Record values at 23 C and at a temperature above Tg. Service temperature range C See Note 4 Viscosit
36、y Pas ISO 2555 or ISO 3219 Record shear strain rate and time under load if the adhesive is thixotropic. Working life min ISO 10364 Volume change during cure % ISO 2577 Density kg/m3ISO 1183 Water absorption % ISO 62 Saturation value at (23 2) C. Volume resistivity ohmm IEC 60093 Electric strength kV
37、/mm IEC 60243-1 Use a specimen with a thickness of the adhesive layer of 0,5 mm. See Note 5. NOTE 1 Strain at failure for ductile materials is measured after yield and therefore requires the measurement of a nominal strain. The nominal strain is derived from measurements of grip separation instead o
38、f extensometer values. See ISO 527-1:1993, Subclauses 4.5 and 9.5, for the definition and measurement of nominal strain. NOTE 2 See ISO 527-1:1993, Subclauses 4.3.1 and 4.4.1, for definitions of stress and strain at yield. NOTE 3 A wider interest in the toughness of an adhesive relates to a knowledg
39、e of the temperature of the transition from ductile to brittle behaviour. This temperature can be derived from measurements of toughness, using the cleavage test ISO 11343, as a function of temperature. Related information can be obtained from measurements of ductility at different temperatures usin
40、g tests for fracture energy under impact (ISO 179-1 and ISO 179-2) or strain at failure in tensile tests on bulk specimens (ISO 527). NOTE 4 The service temperature range will be determined by the criteria used to decide maximum and minimum operating temperatures. Generally, the upper temperature is
41、 decided by the glass transition temperature Tgand the lower temperature by the transition from ductile to brittle behaviour. This lower temperature limit can be determined from measurements of toughness or ductility with temperature (see Note 3). NOTE 5 The measured value of electric strength is ve
42、ry dependent on the thickness of the adhesive layer. BS ISO 17194:20074 6.2 Durability in different environments Data measured using the test method and conditions given in Table 2 reveal the influence on the lap shear strength of the adhesive of exposure to different environments. The tolerance on
43、the test and exposure temperatures specified in Table 2 shall be 3 C, except at 23 C where the tolerance shall be 2 C. Results obtained using the conditions specified in the first row of the table show the dependence of shear strength on temperature separately from the effects of any ageing. In subs
44、equent rows, specimens are subjected to exposure for 30 days in the environments shown and then tested at (23 2) C. See ISO 9142 for the procedure for conditioning specimens. Where it is known that a particular adhesive is not recommended for use with the chemicals shown in Table 2, then the letters
45、 NR shall be given in place of experimental values. Table 2 Data on durability in different environments Record cure temperature, cure time, post-cure temperature and post-cure time used for specimen preparation. Also record adherend material and surface treatment (see ISO 17212). Property (test met
46、hod) Test temperature Ageing prior to test Lap-shear strength (ISO 4587) 40 C, 23 C and 70 C No ageing (optionally include additional test temperatures to demonstrate the working range of the adhesive) 23 C Expose for 30 days to: ambient humidity at 70 C 90 % RH at 70 C water at 23 C water at 90 C i
47、sopropyl alcohol at 23 C 10 % acetic acid at 23 C 35 % sodium hydroxide at 23 C standard fuel (ISO 1817 liquid 2) at 23 C motor oil (ISO 1817 oil No. 3) at 23 C ethylene glycol (50 % by volume in water) at 23 C optionally, other chemicals and temperatures. Record details. 6.3 A simple stress analysi
48、s Data obtained by the tests recorded in Table 3 are required for carrying out calculations of stress and strain distributions in the adhesive in a bonded joint under load, for example using finite-element analysis. If an elastic analysis is carried out, only the first two rows of data are needed. D
49、ata specified by the third row are required for a stress analysis that takes account of plastic deformation using an elastic-plastic model with the von Mises yield criterion. Property values shall be recorded at 23 C and, optionally, at additional temperatures to allow stress analysis calculations of behaviour at other temperatures. BS ISO 17194:20075Table 3 Properties required for a simple stress analysis Property
