1、 Reference number ISO 12624:2011(E) ISO 2011INTERNATIONAL STANDARD ISO 12624 First edition 2011-01-15 Thermal insulating products for building equipment and industrial installations Determination of trace quantities of water soluble chloride, fluoride, silicate, sodium ions and pH Produits isolants
2、thermiques Dtermination des faibles quantits dions chlorure, fluorure, silicate et sodium solubles dans leau et mesure du pH ISO 12624:2011(E) PDF disclaimer This PDF file may contain embedded typefaces. In accordance with Adobes licensing policy, this file may be printed or viewed but shall not be
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7、l copyrightiso.org Web www.iso.org Published in Switzerland ii ISO 2011 All rights reservedISO 12624:2011(E) ISO 2011 All rights reserved iiiContents Page Foreword iv 1 Scope1 2 Normative references1 3 Principle .1 4 Apparatus.2 4.1 Preparation of aqueous extract .2 4.2 Analyses.2 4.3 Materials .2 5
8、 Test specimens3 5.1 General .3 5.2 Dimensions of test specimens.3 5.3 Number of test specimens .3 5.4 Conditioning of test specimens.3 6 Procedure.3 6.1 Test conditions3 6.2 Test procedure.3 7 Calculation and expression of results 6 7.1 Chloride (Cl ) .6 7.2 Fluoride (F ) .7 7.3 Silicate (SiO 3 )8
9、7.4 Sodium (Na + )8 7.5 pH8 8 Accuracy of measurement .8 9 Test report9 Annex A (normative) Spectrophotometric determination of fluoride with zirconium SPADNS .11 Annex B (informative) General information related to the use of this International Standard .12 Annex C (informative) Example of ion chro
10、matography equipment .13 Annex D (informative) Example of borosilicate glass equipment to prepare leaching solutions for thermal insulating products that float.14 ISO 12624:2011(E) iv ISO 2011 All rights reservedForeword ISO (the International Organization for Standardization) is a worldwide federat
11、ion 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 technical committee has been established has the right to be represented on that committe
12、e. 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 of electrotechnical standardization. International Standards are drafted in accordance
13、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 adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires app
14、roval 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 patent rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO 12624 was prepared by Technical Commi
15、ttee ISO/TC 163, Thermal performance and energy use in the built environment, Subcommittee SC 1, Test and measurement methods. ISO 12624 includes the original EN 13468 prepared by Technical Committee CEN/TC 88 Thermal insulating materials and products. However, Subclause 5.4, “conditioning of test s
16、pecimen”, Subclause 6.1, “test conditions”, and Clause 9, “test report” have been modified to reflect conditions for tropical countries. This International Standard is one of a series of standards which specify test methods for determining dimensions and properties of thermal insulating materials an
17、d products. The original EN 13468 supports a series of product standards for thermal insulating materials and products which derive from the Council Directive of 21 December 1988 on the approximation of laws, regulations and administrative provisions of the Member States relating to constructive pro
18、ducts (Directive 89/106/EEC) through the consideration of the essential requirements. ISO 12624:2011(E) ISO 2011 All rights reserved vThis International Standard is one of a series of existing European Standards on test methods for products used to insulate building equipment and industrial installa
19、tions which is comprised of the following group of International Standards: ISO standard Title Respective EN standard ISO 12623 Thermal insulating products for building equipment and industrial installations Determination of short-term water absorption by partial immersion of preformed pipe insulati
20、on EN 13472 ISO 12624 Thermal insulation products Determination of trace quantities of water soluble chloride, fluoride, silicate, sodium ions and pH EN 13468 ISO 12628 Thermal insulating products for building equipment and industrial installations Determination of dimensions, squareness and lineari
21、ty of preformed pipe insulation EN 13467 ISO 12629 Thermal insulating products for building equipment and industrial installations Determination of water vapour transmission properties of preformed pipe insulation EN 13469 A further series of existing European Standards on test methods was adopted b
22、y ISO. This “package” of standards comprises the following group of interrelated standards: ISO standard Title Respective EN standard ISO 29465 Thermal insulating products for building applications Determination of length and width EN 822 ISO 29466 Thermal insulating products for building applicatio
23、ns Determination of thickness EN 823 ISO 29467 Thermal insulating products for building applications Determination of squareness EN 824 ISO 29468 Thermal insulating products for building applications Determination of flatness EN 825 ISO 29469 Thermal insulating products for building applications Det
24、ermination of compression behaviour EN 826 ISO 29470 Thermal insulating products for building applications Determination of the apparent density EN 1602 ISO 29471 Thermal insulating products for building applications Determination of dimensional stability under constant normal laboratory conditions
25、(23 degrees C/50 % relative humidity) EN 1603 ISO 29472 Thermal insulating products for building applications Determination of dimensional stability under specified temperature and humidity conditions EN 1604 ISO 29764 Thermal insulating products for building applications Determination of deformatio
26、n under specified compressive load and temperature conditions EN 1605 ISO 29765 Thermal insulating products for building applications Determination of tensile strength perpendicular to faces EN 1607 ISO 29766 Thermal insulating products for building applications Determination of tensile strength par
27、allel to faces EN 1608 ISO 29767 Thermal insulating products for building applications Determination of short-term water absorption by partial immersion EN 1609 ISO 12624:2011(E) vi ISO 2011 All rights reservedISO standard Title Respective EN standard ISO 29768 Thermal insulating products for buildi
28、ng applications Determination of linear dimensions of test specimens EN 12085 ISO 29769 Thermal insulating products for building applications Determination of behaviour under point load EN 12430 ISO 29770 Thermal insulating products for building applications Determination of thickness for floating-f
29、loor insulating products EN 12431 ISO 29771 Thermal insulating materials for building applications Determination of organic content EN 13820 ISO 29803 Thermal insulation products for building applications Determination of the resistance to impact of external thermal insulation composite systems (ETI
30、CS) EN 13497 ISO 29804 Thermal insulation products for building applications Determination of the tensile bond strength of the adhesive and of the base coat to the thermal insulation material EN 13494 ISO 29805 Thermal insulation products for building applications Determination of the mechanical pro
31、perties of glass fibre meshes EN 13496 The Application of Agreement on technical cooperation between ISO and CEN (Vienna Agreement), Modes 1, 2, 4 and 5, was not approved by CEN/TC 88 and the necessity not seen by its stakeholders. INTERNATIONAL STANDARD ISO 12624:2011(E) ISO 2011 All rights reserve
32、d 1Thermal insulating products for building equipment and industrial installations Determination of trace quantities of water soluble chloride, fluoride, silicate, sodium ions and pH 1 Scope This International Standard specifies the equipment and procedures for determining trace quantities of the wa
33、ter soluble chloride, fluoride, silicate and sodium ions in an aqueous extract of the product. It also describes a procedure for the determination of the pH of the aqueous extract. This International Standard is applicable to thermal insulating products. NOTE The determination of these parameters ma
34、y be relevant for thermal insulating products intended for application to stainless austenitic steel surfaces. The presence of chloride, fluoride, silicate and sodium ions under certain conditions can influence the risk of stress corrosion cracking. See Annex B for further information. 2 Normative r
35、eferences 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. ISO 10136-1, Glass and glassware Analys
36、is of extract solutions Part 1: Determination of silicon dioxide by molecular absorption spectrometry ISO 10136-2, Glass and glassware Analysis of extract solutions Part 2: Determination of sodium oxide and potassium oxide by flame spectrometric methods 3 Principle Test specimens of the insulating p
37、roduct are boiled or heated in deionized water to leach out soluble ions. Tests to determine water soluble chloride, fluoride, silicate and sodium ions are performed on aliquots of the filtered aqueous extract. A pH value is determined on one of the aliquots. ISO 12624:2011(E) 2 ISO 2011 All rights
38、reserved4 Apparatus All equipment and working instruments used for this purpose shall be free of soluble chloride, fluoride, silicate, sodium ions, and grease. Chloride-free solvents shall be used to clean equipment and working instruments (avoid chlorinated solvents). During the performance of the
39、analytic procedure, extraneous sources of these ions shall be reduced or eliminated. 4.1 Preparation of aqueous extract 4.1.1 1 000 ml borosilicate glass flask. 4.1.2 Water condenser. 4.1.3 Heater, complying with the requirements of 7.2. 4.1.4 Prewashed filter, diameter of pores 0,45 m. 4.1.5 Cork b
40、orer, having a diameter which enables taking the specified mass for the test specimen. 4.1.6 Disposable gloves. 4.1.7 Plastic bag or container. 4.1.8 Balance, permitting reading to 0,01 g. 4.2 Analyses 4.2.1 Ion chromatography equipment (IC). See Annex C for an example of suitable equipment. 4.2.2 T
41、itration equipment with automatic end point. 4.2.3 Atomic Absorption Spectrophotometer (AAS). 4.2.4 Atomic Emission Spectrometer with Inductively Coupled Plasma (ICP-AES). 4.2.5 Spectrophotometer. 4.2.6 pH meter/millivolt meter. 4.2.7 Fluoride ion selective electrode. NOTE Any device providing the s
42、ame result with at least the same accuracy can be used. 4.3 Materials 4.3.1 Deionized water, conductivity less than 0,5 S/cm. 4.3.2 0,01 N sodium chloride (NaCl). 4.3.3 0,01 N silver nitrate (AgNO 3 ). ISO 12624:2011(E) ISO 2011 All rights reserved 35 Test specimens 5.1 General To ensure that the re
43、sults are representative of the product, care shall be taken that the test specimens are not subjected to any outside contamination. 5.2 Dimensions of test specimens Take out each test specimen by using a cork borer at positions evenly distributed over the total surface of a full size product. To av
44、oid contamination, chloride-free gloves shall be worn and the test specimen shall be placed in a closed polyethylene bag. Depending on the product family, the weight of each test specimen shall be at least 7,5 g or 20 g. 5.3 Number of test specimens The number of test specimens shall be as specified
45、 in the relevant product standard. If the number is not specified, then at least three test specimens (three weights of 7,5 g or 20 g) shall be used. NOTE In the absence of a product standard or any other European technical specification, the number of the test specimens may be agreed between partie
46、s. 5.4 Conditioning of test specimens The test specimens shall be stored for at least 6 h and not more than 24 h at (23 5) C. In case of dispute, they shall be stored at (23 2) C for the time stated in the relevant product standard. In tropical countries, different conditioning and testing condition
47、s can be relevant. In this case, the conditions shall be (27 5) C and (65 5) % RH (relative humidity), and shall be stated clearly in the test report. 6 Procedure 6.1 Test conditions The test shall be carried out at (23 5) C. In tropical countries, different conditioning and testing conditions can b
48、e relevant. In this case, the conditions shall be (27 2) C and (65 5) % RH. 6.2 Test procedure 6.2.1 Preparation of the leaching solution Take (20 0,1) g or (7,5 0,05) g of the test specimen (m), as specified in the relevant product standard and place it in the wide-mouth glass flask. Add (400 5) ml
49、 deionized water (V). The flask shall be closed with a ground-in stopper and shaken until the test specimen is completely wetted and submerged. If the test specimen floats it should be held under water (see informative Annex D). Fix the water condenser to the flask and electrically heat for 5 min to 10 min until the leaching solution has reached the test temperature. The leaching process shall be continued, under reflux conditions, for the specified
