1、 CGSB CAN/CGSB-4*2 NO-27.5-94 * 2874650 0025846 T97 9 CAN/CGSB-4.2 NO. 27.5-94 Textile Test Methods Flame Resistance - 45“ Angle Test - One Second Flame Impingement National Standard of Canada Copyright Canadian General Standards Board Provided by IHS under license with CGSBNot for ResaleNo reproduc
2、tion or networking permitted without license from IHS-,-,- CGSB CAN/CGSB-t.Z N0.27.5-74 * - 1874650 00258Y7 723 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. CGSB is enga
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9、ished 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 paricular purpose. Many tests req
10、uired 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 connected wit
11、h this standard. Users of this standard are expressly advised that determination of the validity of any such patent rights are entirely their own responsibility. Further information on CGSB and its services and standards may be obtained from: The Secretary Canadian General Standards Board Ottawa, Ca
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19、- Suite 1402 222 Queen Street Ottawa, Ontario . 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 N0.27.5-94 ft L874b50 0025848 8bT NATIONAL STANDARD OF CANADA TEXTIL
20、E TEST METHODS FLAME RESISTANCE - 45“ ANGLE TEST - ONE SECOND FLAME IMPINGEMENT This method supersedes issue of September 1987 Prepared Canadian CAN/CGSB-4.2 NO. 27.5-94 by the Approved by the General Standards Board es Standards Council of Canada j Published November 1994 by the Canadian General St
21、andards Board Ottawa, Canada K1A 1G6 Minister of Supply and Services Canada - 1994 No part of this publication may be reproduced in any form without the pnor permission of the publisher. Copyright Canadian General Standards Board Provided by IHS under license with CGSBNot for ResaleNo reproduction o
22、r networking permitted without license from IHS-,-,-Farnworth, B. Atkinson, D. Audet, A. Bauerle, J.E. Cadieux, J. Carrick, D. Crown, E.M. Daponte, D. Demers, A. Deschamps, C. DesRoches, L. Dolhan, P. Duhamel, D. Edwards, D. Gagnon, P. Ghosh, R. Kasem, M.A. King, M.W. Kiimes, A. Mitton, M.T. Monk, W
23、 .B. Muniak, E. Patel, A. Rashid, M.A. Ronsyn, C. Routhier, D. Scrafton, K. Teerhuis, J. Timms, V. CGSB CAN/CGSB-4.2 N0.27.5-94 * 1874650 0025849 7Tb CANADIAN GENERAL STANDARDS BOARD COMMITTEE ON TEXTILE TEST METHODS (Membership at date of approval) Chairperson M.E.T.A. Research Inc. Celanese Canada
24、 Inc. Department of National Defence ORTECH Royal Canadian Mounted Police Department of National Defence University of Alberta The Wool Bureau of Canada Ltd. Professional Association of Cleaners and Launderers of Quebec Swift Textiles Canada Department of National Revenue (Customs and Excise) Depart
25、ment of National Defence Textile Technology Centre Canadian Carpet Institute Canadian Textiles Institute Department of Consumer and Corporate Affairs Department of Consumer and Corporate Affairs Laval University Dominion Textile Inc. Consultant Consultant Consultanme T. Eaton Company of Canada Sears
26、 Canada Inc. Department of Public Works, Alberta Department of Supply and Services Consoltex Inc. The Retail Research Foundation of Canada University of Manitoba Du Pont Canada Inc. Randall, J. Secretary Canadian General Standards Board Acknowledgment is made for the translation of this National Sta
27、ndard of Canada by the Translation Bureau of the Department of the Secretary of State. CANKGSB-4.2 NO. 27.5-94 Copyright Canadian General Standards Board Provided by IHS under license with CGSBNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-CGSB CAN/CSB-4*2 N0.27-5
28、-34 Y* L874b50 0025850 418 H National Standard of Canada r TEXTILE TEST METHODS 1 CANKGSB-4.2 I Ottawa I Canada KIA 1G6 Flame Resistance - 45“ Angle Test - One Second Flame Impingement NO. 27.5-94 1. 1.1 1.2 1.3 2. 2.1 :3. 13.1 13.1.1 3.2 4. 4.1 Supersedes Issue of September 1987 PURPOSE AND SCOPE T
29、his method determines the flame spread properties of a textile material when a specimen is supported at an angle of 45“ and a flame is applied to its upper surface for 1 s. This method does not apply to textile products that cannot be tested because of size and/or shape such as shoe laces, textile f
30、loor coverings, mattresses, wigs and textiles that cannot be compressed to 6 mm thickness or less by the pressure exerted by the holder clamps. The testing and evaluation of a product against this method may require the use of materials and/or equipment that could be hazardous. This document does no
31、t 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 conjunction with any existing applicable regulatory requirements prior to its use. P
32、RINCIPLE Specimens cut from the textile are mounted in specimen holders, dried under specified conditions, cooled in a desiccator and supported in the testing apparatus at an angle of 45“. A standardized flame is applied to the surface near the lower end for 1 s. The total time required for the spec
33、imen to ignite and flaming to proceed up the fabric a distance of 127 mm is recorded as the flame spread time. Fabrics having a raised-fibre surface (Note 1) are brushed before the test, and any ignition or fusing of the base of such fabrics is noted. APPLICABLE PUBLICATIONS The following publicatio
34、ns are applicable to this method. Canadian General Standards Board (CGSB) CANKGSB-4.2 - Textile Test Methods: No. 1 - Precision and Accuracy of Measurements No. 30.3 - Procedure for the Removal of Non-Permanent Flame Retardant Treatments from Textile Products. Reference to the above publications is
35、to the latest issues, unless otherwise specified by the authority applying this method. The source of these publications is shown in the Notes section. APPARATUS AND REAGENTS Flammability tester: as illustrated in Figure 1 (Note 2). Note 1: Napped, pile-tufied, flocked or a similar su$ace. Note2: Th
36、e flammnbilily tester and the brushing device are available from the U.S. Testing Co., Hoboken, N.J., U.S.A. (Canadian supplier: Testing Machines International of Canada Ltd., 6 Ronald Dr., Montreal West, Quebec H4X IM8), Custom Scientific Instruments Inc., Whippany, N.J., U.S.A. (Canadian Supplier:
37、 J.B. Atlas Company, 9 Canso Road, Rexdale, Ontario M9W 4L91, or Govmark Organization Inc., P.O. Box 807, Bellmore, Ny 11710, U.S.A. The flammability tester incorporates a ventilated metal chamber, a standard ignition medium that applies a specifiedflame to a specimen for 1 s (or longer $required),
38、an adjustable specimen rack, specimen holders, an automatic timing device and a stop cord with a weight to activate the stop motion. 1 Copyright Canadian General Standards Board Provided by IHS under license with CGSBNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
39、4.2 Brushing device: as illustrated in Figure 2 (Note 2). 4.3 Laboratory drying oven. 4.4 4.5 Butane: chemically pure. Desiccator: containing anhydrous magnesium perchlorate or an equally effective dehydrating agent. 4.6 Sewing thread: R 35 texl3 (No. 50, 3-ply) mercerized cotton. 5. TEST SPECIMENS
40、5.1 Five specimens, each 50 x 165 mm, are required for the test (Notes 3 and 4). The long dimension shall be in the direction of more rapid burning, and the surface to be tested shall be that surface showing more rapid burning (Note 5). 5.1.1 To determine the direction in which to cut the specimens
41、and the surface to test, make preliminary trials (using 50 x 165 mm specimens) in accordance with the procedure given in section 6. Test specimens on both surfaces and in the lengthwise and crosswise directions of the fabric. Prepare specimens in accordance with par. 5.2 and 5.3. Mark out each speci
42、men on the surface of the sample in accordance with par. 5.1. For each specimen identify, by suitable means, the surface to be tested and the end toward which burning is more rapid. Cut out the specimens. Specimens from garments or other assemblies may include all layers held in the relative positio
43、n they occupy however the total thickness of the clamped specimen must not exceed 6 mm. 5.2 5.3 6. PROCEDURE 6.1 Conduct the tests in a draft-free room with the apparatus at room temperature (approximately 20C). It is recommended that the relative humidity in the room not be greater than 70%. Mount
44、and clamp each specimen in a specimen holder (frame) so that the specimen is gripped along the top edge and down both sides. The identified end (par. 5.2) will be at the top of the frame, and the lower edge will be in line with the bottom of the top member of the frame. With the brushing device show
45、n in Figure 2, brush each specimen having a raised-fibre surface once against the lay of the nap or pile, using a single, smooth action if possible (Note 6). 6.2 6.3 Place the mounted specimens in an oven at 105 -I 2C for 1 h, remove them from the oven and cool them in the desiccator for not less th
46、an 15 min nor more than 2 h. 6.4 Check the timing device. With the stop button depressed, press the start button. The timer must record 1.0 f 0.05 s (the time of application of the flame to the surface of the specimen) for one cycle of the mechanism. Adjust if necessary. 6.5 Open the fuel control va
47、lve, ignite the gas, and allow approximately 5 min for ail air to be exhausted in the fuel line. With the gas jet in a horizontal position, adjust the length of the flame to 16 mm, measured from the top of the flame to the opening in the gas nozzle. Note 3: rf the precision with which flame spread i
48、s to be determined is specijed, refer to CANKGSB-4.2 No. i to determine the number of test specimens required. If this is not known, at least five specimens shall be tested Note 4: Where required, a textile suspected of having a flame retardant treatment as evidenced by slow burning, difficulty of i
49、gnition, extinguishment, etc., shall be tested after laundering and dry cleaning in accordance with CANKGSB-4.2 No. 30.3. d Note 5: For a textile having a raised-fibre surface, the long dimension is usually in the direction of hy of the surface fibres. Flame spread is more rapid when progressing against the lay of the pile or nap. Note 6: When brushing, it may be necessary to grip the end of the specimen in the fingers to prevent its movement in the frame. Not more than 6 mm a
