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1、Reference number ISO 15025:2000(E) ISO 2000 INTERNATIONAL STANDARD ISO 15025 First edition 2000-05-01 Protective clothing Protection against heat and flame Method of test for limited flame spread Vtements de protection Protection contre la chaleur et les flammes Mthode dessai pour la propagation de
2、flamme limite ISO 15025:2000(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 edited unless the typefaces which are embedded are licensed to and installed on the computer performing the edi
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5、 the address given below. ISO 2000 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address belo
6、w or ISOs member body in the country of the requester. ISO copyright office Case postale 56 ? CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 734 10 79 E-mail copyrightiso.ch Web www.iso.ch Printed in Switzerland ii ISO 2000 All rights reserved ISO 15025:2000(E) ISO 2000 All rights reservediii
7、ContentsPage Foreword.iv Introduction.v 1Scope 1 2Terms and definitions .1 3Principle2 4Health and safety of test operators2 5Reagents.2 6Apparatus .2 7Sampling and sample preparation.7 7.1Sampling.7 7.2Conditioning atmosphere of the test sample8 8Procedure .8 8.1Installation of the test apparatus .
8、8 8.2Test10 9Precision.11 10Test report11 Annex A (normative) Description and construction of the burner.13 Annex B (informative) Experimental techniques14 Annex C (normative) Measurement of char length15 Bibliography16 ISO 15025:2000(E) iv ISO 2000 All rights reserved Foreword ISO (the Internationa
9、l 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 technical committee has been es
10、tablished 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 of electrotechnical standardi
11、zation. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 3. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 7
12、5 % of the member bodies casting a vote. Attention is drawn to the possibility that some of the elements of this International Standard may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. International Standard ISO 15025 was prepared
13、by Technical Committee ISO/TC 94,Personal safety Protective clothing and equipment, Subcommittee SC 13,Protective clothing. Annexes A and C form a normative part of ISO 15025. Annex B is for information only. ISO 15025:2000(E) ISO 2000 All rights reservedv Introduction This International Standard wa
14、s initially prepared by Technical Committee ISO/TC38/SC19 as part of the revision of ISO 6940 and ISO 6941. This specific work item was transferred to Technical Committee ISO/TC 94/SC 13 in April 1997. This method of test is closely related to the method of test specified in ISO 6941. It uses the sa
15、me basic equipment but a smaller specimen holder and template. Materials which do not burn to the upper or vertical edges of the smaller test specimen used in this test may be classified as producing limited flame spread. This method assesses the properties of textile fabrics in response to a short
16、contact with a small igniting flame under controlled conditions. Results may not apply to situations where there is restricted air supply or exposure to large sources of intense heat. The influence of seams on the behaviour of fabrics can be determined by this method, the seam being positioned withi
17、n the test specimen so as to be subjected to the test flame. Whenever practicable, trimmings should be tested as part of the fabric assembly on which they are or will be used. A list of standards related to ISO 15025 is given in the Bibliography. -,-,- INTERNATIONAL STANDARDISO 15025:2000(E) ISO 200
18、0 All rights reserved1 Protective clothing Protection against heat and flame Method of test for limited flame spread 1Scope This International Standard specifies a method for the measurement of limited flame spread properties of vertically oriented textile fabrics and industrial products in the form
19、 of single or multi-component fabrics (coated, quilted, multilayered, sandwich constructions, and similar combinations), when subjected to a small defined flame. This test method is not appropriate for materials that demonstrate extensive melting or shrinkage. 2Terms and definitions For the purposes
20、 of this International Standard the following terms and definitions apply. 2.1 flame application time time for which the ignition flame is applied to the test specimen 2.2 afterflame time duration of flame length of time for which a material continues to flame, under the specified test conditions, a
21、fter the ignition source has been removed NOTEAfterflame time is measured to the nearest second and afterflame times of less than 1,0 s should be recorded as zero. 2.3 afterglow persistence of glowing combustion of a material under specified test conditions, after cessation of flaming or, if no flam
22、ing occurs, after removal of the ignition source NOTEAfterglow is a continuation of combustion with the evolution of heat and light but without flame. Some materials absorb heat during the flame application and continue to emit this absorbed heat after removal of the igniting flame. This glowing wit
23、hout combustion should not be recorded as afterglow. 2.4 afterglow time duration of afterglow time for which a material continues to afterglow, under specified test conditions after cessation of flaming or after removal of the ignition source NOTEAfterglow time is measured to the nearest second and
24、afterglow times of less than 1,0 s should be recorded as zero. 2.5 char formation of a brittle residue when material is exposed to thermal energy -,-,- ISO 15025:2000(E) 2 ISO 2000 All rights reserved 2.6 debris material separating from the specimen during the test procedure and falling from the spe
25、cimen without flaming 2.7 flaming debris material separating from the specimen during the test procedure and igniting the filter paper 2.8 hole ?surface ignition of procedure A? break in the test specimen of at least 5 mm in any dimension and having a continuous perimeter caused by melting, glowing
26、or flaming NOTE 1If the hole is crossed by any material it is described as discontinuous. NOTE 2This International Standard describes the reporting of holes in any separable layer of a multilayer specimen obtained during suface ignition testing see 8.2.1.3 g) and 10 i). 3Principle A defined flame fr
27、om a specified burner is applied for 10 s to the surface or the bottom edge of textile specimens which are vertically oriented. Information is recorded on the spread of flame and afterglow, and on the formation of debris, flaming debris, or a hole. Afterflame time and afterglow time are recorded. NO
28、TE 1Surface exposure tests may be performed on both sides of multilayer fabric assemblies. NOTE 2The bottom-edge ignition test may not offer acceptable reproducibility for testing some materials. 4Health and safety of test operators Burning of materials may produce smoke and toxic gases which can af
29、fect the health of operators. Between tests, the atmosphere of the test location, which should be of adequate dimensions to avoid endangering the health of operators, should be cleared of smoke and fumes by an extractor fan or other means of ventilation (see 6.1). NOTESmoke and fume emission may be
30、subject to national regulations concerning atmospheric pollution control. 5Reagents 5.1Gas, of commercial grade, either propane or butane or butane/propane mixtures. NOTECommercial grade propane is preferred but other gases may be used and this fact recorded in the test report (see item b) in clause
31、 10. 6Apparatus 6.1Test apparatus General requirements ?Construction: consisting of material which shall not be adversely affected by the fumes and that is resistant to heat and flame. NOTESome products of combustion are corrosive. -,-,- ISO 15025:2000(E) ISO 2000 All rights reserved3 ?Location: sur
32、rounded by a volume of air sufficient not to be affected by any reduction of oxygen concentration. Where an open-fronted cabinet is used for the test, provision shall be made to permit the specimen to be mounted at least 300 mm from any wall. 6.2Mounting frame, constructed to a design capable of hol
33、ding the test specimen holder (see 6.4 and Figure 1) and the gas burner (see 6.3 and Figure 2) in the specified relative orientation (see Figure 3). 6.3Gas burner, as described in annex A (see Figure 2), capable of being moved from a standby position, where the tip of the burner is at least 75 mm fr
34、om the test specimen, to either the horizontal or inclined operating position see Figure 3 a) and 3 b) respectively. Dimensions in millimetres Key 1Specimen support pin, (2 ? 0,5) mm diameter 2Spacer stub, 2 mm diameter 3Mounting frame 4Specimen Figure 1 Test specimen holder -,-,- ISO 15025:2000(E)
35、4 ISO 2000 All rights reserved Dimensions in millimetres a) Gas burner arrangement b) Gas jet c) Flame stabilizer Key 1Fitted in during assembly 2Gas jet 3Choke tube 4Burner tube 5Flame stabilizer 6Notch Figure 2 Gas burner ISO 15025:2000(E) ISO 2000 All rights reserved5 Dimensions in millimetres d)
36、 Burner tube Key 7Gas-mixing zone 8Diffusion zone 9Air chamber 10 Outlet Figure 2 Gas burner(continued) -,-,- ISO 15025:2000(E) 6 ISO 2000 All rights reserved Dimensions in millimetres a) Face ignitionb) Bottom-edge ignition c) Horizontal stand-by position, horizontal reach adjustment d) Vertical st
37、and-by flame height Key 1Burner 2Flame 3Mounting frame 4Specimen 5Mounting pin 6Nominal flame application point Figure 3 Flame position and adjustment ISO 15025:2000(E) ISO 2000 All rights reserved7 6.4Specimen holder, consisting of a rectangular metal frame having a specimen support pin at each cor
38、ner of a rectangle of 190 mm length by 150 mm width (see Figure 1). 6.4.1Supporting pins, for the specimen having a (2 ? 0,5) mm diameter and a length of (25 ? 1) mm. NOTELonger pins may be needed for mounting thick or multilayer specimens. 6.4.2Spacer stub, for the purpose of locating the specimen
39、in a plane at least 20 mm away from the frame (see 8.1.2.1 and 8.1.3.1), of 2 mm diameter and a length of at least 20 mm and positioned adjacent to each of the four pins. 6.5Template, flat and rigid, made of a suitable material and of a size corresponding to the size of the specimen (200 mm ? 160 mm
40、). Holes approximately 4 mm in diameter shall be drilled in each corner of the template and positioned so that the distances between the centres of the holes correspond to the distances between the pins on the specimen holder (see Figure 1). The holes shall be located equidistant about the vertical
41、centreline of the template. 6.6Timing devices: ?One timing device to control and measure the flame application time, which can be set at 1 s intervals with an accuracy of 0,2 s or better. ?Two timing devices reading to 0,2 s or better are required to measure the afterflame time and/or afterglow time
42、. These devices are started, preferably automatically, at the instant of test flame termination or removal, and are stopped manually. NOTEAlternatively, a video recording of the test can be made, provided that an on-screen timer is provided with the specified precision. 6.7Filter paper, with the fol
43、lowing characteristics: ?area specific mass:60 g/m2to 100 g/m2 ?size:W (150 mm ? 100 mm) ?thickness:0,15 mm to 0,25 mm ?alpha cellulose content:W 95 %. 7Sampling and sample preparation 7.1Sampling 7.1.1Number of specimens Using the template (6.5), mark two sets of three test specimens. Mark one set
44、perpendicular to the other. For woven/knitted or similar materials, orient the lengthwise axis of the template in the machine and cross-machine direction. For surface ignition, where the two surfaces of the sample are visually dissimilar and preliminary testing indicates dissimilar flammability char
45、acteristics, each surface shall be tested by the use of a set of six specimens. An extra test specimen is required for the installation procedure (see 8.1.2 and 8.1.3). -,-,- ISO 15025:2000(E) 8 ISO 2000 All rights reserved 7.1.2Specimen-holder pin location marks Mark the position through which the
46、pins on the specimen holder shall pass by means of the holes in the template (6.5). NOTEWhere the fabric is of open construction (for instance scrim, gauze), small pieces of adhesive tape may be affixed to the fabric at the pin sites and the position marked on the tape. 7.1.3Test specimen size Cut o
47、ut test specimens with dimensions of (200 ? 2) mm? (160 ? 2) mm. 7.1.4Multilayer specimens When specimens are composed of multiple layers or materials that are not continuous over the entire specimen, position the material of the smaller dimension along the bottom edge of the specimen, in a manner c
48、onsistent with its use in the protective clothing, including the manner of attachment and orientation. EXAMPLESpecimens containing retroreflective tape or emblems and lettering are typical examples of multilayer specimens where this specimen preparation procedure should be used. 7.2Conditioning atmosphere of the test sample Unless otherwise specified, test specimens shall be conditioned in an atmosphere having a temperature of (20 ? 2) ?C and a relative humidity of (65 ? 5) % for at least 24 h. If testing is not carried out immediately after conditi