1、CGSB CAN/CGSB-4.2 NO-LL=L-94 * 3874650 0025380 889 CAN/CGSB-4.2 NO. 11.1-94 Canadian General Standards Board Textile Test Methods Bursting Strength - Diaphragm Pressure Test National Standard of Canada -a Copyright Canadian General Standards Board Provided by IHS under license with CGSBNot for Resal
2、eNo reproduction or networking permitted without license from IHS-,-,-CGSB CAN/CGSB-4.2 NO.11.1-94 * L874b50 0025181 715 The CANADIAN GENERAL STANDARDS BOARD (CGSB), under whose auspices this standard has been developed is a government agency within the Federal Department of Supply and Services. CGS
3、B is engaged in the production of voluntary standards in a wide range of subject areas through the media of standards committees and the. consensus process. The standards committees are composed of representatives of relevant interests including producers, consumers and other users, retailers, gover
4、nments, educational institutions, technical, professional and trade societies, and research and testing organizations. Any given standard is developed on the consensus of views expressed by such representatives. The Ministers Advisory Council on CGSB reviews the results of the consensus process. CGS
5、B has been accredited by the Standards Council of Canada as a national standards-writing organization. The standards that it develops and offers as National Standards of Canada conform to the criteria and procedures established for this purpose by the Standards Council of Canada. In addition to stan
6、dards it publishes as national standards, CGSB produces standards to meet particular needs, in response to requests from a variety of sources in both the public and private sectors. Both CGSB standards and national standards developed by CGSB are developed in conformance with the policies described
7、in the Policy Manual for the Development and Maintenance of Standards by CGSB. CGSB standards are subject to review and revision at any time, so as to ensure that they keep abreast of technological progress. Suggestions for their improvement, which are always welcome, should be brought to the notice
8、 of the standards committees concerned. Changes to standards are issued either as separate amendment sheets or in new editions of standards. An up-to-date listing of CGSB standards, including details on latest issues and amendments, and ordering instructions, will be found in the CGSB Catalogue, whi
9、ch is published annually and is available without charge upon request. Although the intended primary application of this standard is stated in its Scope, it is important to note that it remains the responsibility of the users of the standard to judge its suitability for their particular purpose. Man
10、y tests required by CGSB standards are inherently hazardous. CGSB neither assumes nor accepts any responsibility for any injury or damage that may occur during or as the result of tests, wherever performed. CGSB takes no position respecting the validity of any patent rights asserted with any item co
11、nnected with this standard. Users of this standard are expressly advised that determination of the validity of any such patent rights are entirely their own responsibility. Furthcr information on CGSB and its services and standards may be obtained from: The Secretary Canadian General Standards Board
12、 Ottawa, Canada KIA 1G6 The STANDARDS COUNCIL OF CANADA is the Co-ordinating body of the National Standards System, a federation of independent, autonomous organizations working towards the further development and improvement of voluntary standardization in the national interest. The principal objec
13、tives of the Council are to foster and promote voluntary standardization as a means of advancing the national economy, benefiting the health, safety and welfare of the public, assisting and protecting the consumer, facilitating domestic and international trade, and furthering international co-operat
14、ion in the field of standards. A National Standard of Canada is a standard which has been approved by the Standards Council o Canada and one which reflects a reasonable agreement among the views of a number of capable individuals whose collective interests provide, to the greatest practicable extent
15、, a balance of representation of producers, users, consumers and others with relevant interests, as may be appropriate to the subject in hand. It normally is a standard that is capable of making a significant and timely contribution to the national interest. Approval of a standard as a National Stan
16、dard of Canada indicates that a standard conforms to the criteria and procedures established by the Standards Council of Canada. Approval does not refer to the technical content of the standard; this remains the continuing responsibility of the accredited standards-writing organization. Those who ha
17、ve a need to apply standards are encouraged to use National Standards of Canada whenever practicable. These standards are subject to periodic review; therefore, users are cautioned to obtain the latest edition from the organization preparing the standard. The responsibility for approving National St
18、andards of Canada rests with the: The Manager Marketing and Sales Services Canadian General Standards Board Ottawa, Canada KIA 1G6 sow to order Publications: by Telephone - (613) 941-8703 or - 1-800-665-CGSB (Canada only) by Fax - (613) 941-8705 by Mail - CGSB Sales Centre Ottawa, Canada KIA 1G6 in
19、Person - Suite 1402 222 Queen Street Ottawa, Ontario t . Copyright Canadian General Standards Board Provided by IHS under license with CGSBNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-CGSB CAN/CGSB-4-2 NO.11-1-74 * 1874650 0025382 651 NATIONAL STANDARD OF CANADA
20、 CANICGSB-4.2 NO. 11.1-94 TEXTILE TEST METHODS BURSTING STRENGTH - DIAPHRAGM PRESSURE TEST This method supersedes issue of May 1988. Prepared Canadian by the Approved by the General Standards Board -3 Standards Council of Canada Published May 1994 by the Canadian General Standards Board Ottawa, Cana
21、da K1A 1G6 Minister of Supply and Services Canada - 1994 No part of this publication may be reproduced in any form without the prior permission of the publisher. Copyright Canadian General Standards Board Provided by IHS under license with CGSBNot for ResaleNo reproduction or networking permitted wi
22、thout license from IHS-,-,-CGSB CAN/CGSB-4*2 NO-33-3-74 * m 3874650 0025383 578 m Farnworth, B. Chaiman Atkinson, D. Audet, A. Bauerle, J.E. Cadieux , J. Carrick, D. Cosman, V. Crown, E.M. Daponte, D. Demers, A. Deschamps, C. Dolhan, P. Duhamel, D. Edwards, D. Kasem, M.A. Klimes, A. Mitton, M.T. Mon
23、k, W.B. Muniak, E. Patel, A. Rashid, M.A. Ronsyn, C. Routhier, D. Scrafton, K. Teerhuis, J. Timms, V. Ward, W. Randall, J. Secretary CANADIAN GENERAL STANDARDS BOARD COMMITTEE ON TEXTILE TEST METHODS (Membership at date of approval) M.E.T.A. Research Inc. Celanese Canada Inc. Department of National
24、Defence ORTECH Royal Canadian Mounted Police Department of National Defence Department of Consumer and Corporate Affairs University of Alberta The Wool Bureau of Canada Ltd. Professional Association of Cleaners and Launderers of Quebec Swift Textiles Canada Department of National Defence Textile Tec
25、hnology Centre Canadian Carpet Institute Department of Consumer and Corporate Affairs Dominion Textile Inc. Consul tant Consultant Consultantlhe T. Eaton Company of Canada Sears Canada Inc. Department of Public Works, Alberta Department of Supply and Services Consoltex Inc. The Retail Research Found
26、ation of Canada University of Manitoba Du Pont Canada Inc. Department of National Revenue (Customs and Excise) Canadian General Standards Board Y Acknowledgment is made for the translation of this National Standard of Canada by the Translation Bureau of the Secretary of State. CANICGSB-4.2 NO. 11.1-
27、94 Copyright Canadian General Standards Board Provided by IHS under license with CGSBNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-CGSB CAN/CGSB-4=2 NO.13-1-74 * 3874650 0025384 424 . National Standard of Canada I I I 1 1-93 I TEXTILE TEST METHODS I CANICGSB4.2 I
28、 I Ottawa I I 1 Canada K1A 1G6 BURSTING STRENGTH - DIAPHRAGM PRESSURE TEST NO. 11.1-94 1. 1.1 1.2 2. 2.1 3. 3.1 3.1.1 3.2 4. 4.1 Supersedes Issue of May 1988 FOREWORD This method is technically equivalent to ASTM D 3786-87, Test Method for Hydraulic Bursting Strength of Knitted Goods and Nonwoven Fa
29、brics: Diaphragm Bursting Strength Tester Method. PURPOSE AND SCOPE This method determines the bursting strength of knitted and other nonwoven fabrics by the diaphragm pressure procedure. Although it may also be used with woven fabrics, it should be noted that for such materials it is the breaking s
30、trength of the less extensible set of yarns that governs the value of bursting strength observed. The extensibility of the diaphragm limits the use of this procedure to materiais less extensible than the diaphragm itself. The testing and evaluation of a product against this method may require the us
31、e of materials and/or equipment that could be hazardous, This document does not purport to address all the safety aspects associated with its use. Anyone using this method has the responsibility to consult the appropriate authorities and to establish appropriate health and safety practices in conjun
32、ction with any existing applicable regulatory requirements prior to its use. PRINCIPLE A fixed area of fabric is subjected to pressure on one side through a diaphragm, and the pressure is gradually increased until the fabric is ruptured. APPLICABLE PUBLICATIONS The following publications are applica
33、ble to this method: Canadian General Standards Board (CGSB) CANKGSB-4.2 - Textile Test Methods: No. 1 - Precision and Accuracy of Measurements No. 2 - Conditioning Textile Materials for Testing. Reference to the above publications is to the latest issues, uxss otherwise specified by the authority ap
34、plying this method. The source of these publications is shown in the Notes section. DEFINITION Bursting strength diaphragm pressure test: the maximum fluid pressure applied to a circular specimen in distending it to rupture. 1 Copyright Canadian General Standards Board Provided by IHS under license
35、with CGSBNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-CGSB CAN/CGSB-4.2 NO.11.1-CI4 * 1874b50 0025185 360 5. APPARATUS AND MATERIALS 5.1 Hydraulic Diaphragm Bursting Tester (Note 1): a testing machine that meets the requirements of par. 5.1.1 through 5.1.4. In c
36、ases of dispute, a motor-driven tester shall be used unless the purchaser and the supplier agree otherwise. 5.1.1 Clumps: for firmly and uniformly securing the test specimen between two annular, plane, parallel, and preferably stainless steel surfaces, without slippage during the test. Use sufficien
37、t pressure to effect the practicable minimization of slippage. 5.1.1.1 The upper and lower clamping surfaces shall have a circular opening at least 75 mm in diameter and coaxial apertures of 31 f 0.75 mm in diameter. The surfaces of the clamps between which the specimen is placed shall have concentr
38、ic grooves around the edge of the aperture. The groves shall be spaced not less than 0.8 mm apart and shall be of a depth not less than 0.015 mm. The surfaces of the clamps shall be metallic and any edge which might cause a cutting action shall be rounded to a radius of not more than 0.4 mm (Note 2)
39、. 5.1.1.2 The lower clamp shall be integral with the chamber in which a screw shall operate to force a liquid pressure medium at a uniform rate of 95 f 5 mUmin or 170 f 15 mUmin against the rubber diaphragm. 5. 1.2 Diaphragm: a diaphragm of moulded synthetic rubber, 1.80 f 0.05 mm in thickness with
40、reinforced centre, clamped between the lower clamping plate and the rest of the apparatus so that before the diaphragm is stretched by pressure underneath it, the centre of its upper surface is below the plane of the clamping surface. The pressure required to raise the free surface of the diaphragm
41、plane shall be 30 f 5 kPa. This pressure shall be checked no more than one month prior to use of the equipment. The extensibility of the diaphragm should be tested using a bridge gauge, this test being carried out with the clamping ring removed. The diaphragm should be inspected frequently for perma
42、nent distortion and renewed if necessary. 5.1.3 Pressure gauge: a maximum-reading pressure gauge of the Bourdon type of appropriate capacity graduated in kilopascals and accurate throughout the entire range of its scale to within a value of 1% of its maximum capacity. The capacity of the gauge shall
43、 be such that the individual readings will be not less than 25% nor more than 75% of the total capacity of the gauge. 5.1.4 Hydmuc pressure system: a means of applying controlled increasing hydrostatic pressure to the underside of the diaphragm until the specimen bursts through a fluid displaced at
44、the rate of 95 f 5 mUmin or 170 i: 15 mL/min. The fluid is displaced by a piston in the pressure chamber of the apparatus. The recommended chamber fluid is USP chemically pure 96% glycerin (Note 3). The hydraulic system including the gauges shall be mounted so as to be free of externally induced vib
45、rations. Means shall be provided at the instant of rupture of the specimen for stopping any further application of the loading pressure and for holding unchanged the contents of the pressure chamber until the total bursting pressure and the pressure required to inflate the diaphragm indicated on the
46、 gauge have been recorded. Aluminum foil for validation of tester: pieces of pretested aluminum sheet having a known bursting strength in the range of the gauges to be validated (Note 4). 5.2 5.3 Neutral nonionic wetting agent Notel: The Mullen Burst Testers, hand-driiren Model LC and motor-driven M
47、odel C wid Model C-A. and accessories, manufactured by B.F. Perkiiis di Sort, hic., G.P.O. 366, Chicopee. MA 03021, U.S.A., have been found satisfactory. The motor- driven Model A has been found to be satisfactoty for heavyweight fabrics, but may be unsuitable for some lightweight fabrics. Model C a
48、nd Model A have different pumping rates and different diaphragms; therefore, it is not likely these two machines will give the same result. They are available in Canada from Testing Machines International of Canada Ltd., 6 Ronald Dr., Montreal West, Quebec, Canada H4X IM8 or Noram Ltd., I03 Gun Ave.
49、, Pointe-Claire, Quebec, Canada H9R 3x2. Note 2: Since the clamping mechanism and clamping surfaces are subject to considerable wear and distortion, they should be examined periodically and repaired or replaced when necessary. Note 3: Ethylene glycol may be substituted for the glycerine if desired. I Note 4: Standardized aluminum sheets may be obtained from the Pulp and Paper Research Institute of Canada, 570, boul. St. Johns, Pointe-Claire (Qubec) H9R 359, Attention: Calibrations
