1、COPYRIGHT British Standards Institution on ERC Specs and StandardsLicensed by Information Handling Services.BSI BS*50bb 74 lbZL(bh9 Ol170b72 I m nUs British Standard, having been approved by the Textile Divisionai Council, was published under the authority of the Executive Board on 29 March, 1974. B
2、ritish Standards Institution, 1974 ISBN: O 580 08481 7 Copyright Users of British Standards are reminded that copyright subsists in all BSI publications. No part of this publication may be reproduced in any form without the prior permission in writing of BSI. This does not preclude the free use, in
3、the course of implementing the standard, of necessary details such as symbols and size, type or grade designations. Enquiries should be addressed to the BSI Secretariat. Contract requirements Attention is drawn to the fact that this British Standard does not purport to include ail the necessary prov
4、isions of a contract. Revision of British Standards In order to keep abreast of progress in the industries concerned, British Standards are subject to periodical review, Suggestions for improvements will be recorded and in due course brought to the notice of the committees charged with the revision
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7、ns may be purchased dwect from Sdes Department. Enquiries concerning subscribing membership, which has considerable advantages, wiii be welcomed, and should be made to Subscriptions Department. Both departments are located at: . 101 Pentonvllle Road, London N1 9M, (Telephone 01-837 8801 ; Telex 2321
8、8). The following BSI references relate to the work on this standard: Comrnittec reference T/16 Draft for comment 73/70109DC Co-operating organizations The Tcxtile Divisional Council, under whose supervision this British Standard was prepared, consists of representatives from the following Covcrnmen
9、t department and scientific and industrial organizations: British Railways Board Consumer Standards Advisory Committee of BSI Consumers Association Cotton Industry Standards Committee Jute Industry Standards Committee Linen Industry Standards Committee London Transport Executive Man-madc Fibres Indu
10、stry Standards Committee Ministry of Defence Ropes and Cordage Industry Standards Committee Silk Industry Standards Committee Society of Dyers and Colourists Textile Machinery Industry Standards Committee Trades Union Congress Wool Industry Standards Committee *Textile Institute The organization mar
11、ked with an asterisk in the above list is represented on the standing Joint Committee for Textile Test Methods, the members of which were appointed by the Textile Institute and the Textile Divisional Council, and which was entrusted with supervising the preparation of this British Standard; they wer
12、e drawn from: Association of Jute Spinners and Manufacturers Cotton Silk and Man-made Fibres Research Association Manchester Chamber of Commerce Testing House University of Leeds Wh . COPYRIGHT British Standards Institution on ERC Specs and StandardsLicensed by Information Handling ServicesBSI E3S*5
13、0bb q m Lh2qbb 0370673 3 m Amd. No. BS 5066 : March 1974 UDC 677.017.633.2 Date of issue Text affected Method of test for -The resistance of fabrics to an artificial shower Amendments issued since publication British Standards Institution 2 Park Street e London WIA 2BS Telephone O1 -629 9000 T0kx 26
14、6933 COPYRIGHT British Standards Institution on ERC Specs and StandardsLicensed by Information Handling ServicesBSI BS*SObb 74 1624669 0170674 5 BS 5066 : 1974 Contents Page Co-oprating organizations Inside front cover Foreword 2 Method 1. Scope 2. Principle 3. Apparatus 4. Conditioning and testing
15、atmosphere 5. Preparation of test specimen 6. Preparation of apparatus 7. Test procedure 8. Calculation and expression of results 9. Test report Page Appendices A. Fabrics with wicking properties B. Description and installation of tr apparatus Figures 1. The Wira Shower Tester 2. Principle of the ap
16、paratus 3. Perforated PTFE base of reservoir 4. Pattern of drops on fabric over ribbed-glass 6 6 8 9 10 backing plate 10 Foreword This British Standard prescribes the use of the Wira Shower Tester, which meets the need for a reliable method of measuring the water absorption and penetration resistanc
17、e of fabric placed in contact with a backing material and exposed to an artificial shower. Jt has a number of advantages over other existing appliances, for example: (1) It is not dependent on the flow of water through fine holes in plates or through numerous fine capillary tubes. Comparatively simp
18、le features maintain the correct flow rate and uniform drop propagation. (2) The standard test uses distilled water and the essential parts of the apparatus are non-metallic. This avoids maintenance work caused by the deposition of solid matter from tap water and corrosion of metal in contact with t
19、he water. (3) Provision is made for detaching and cleaning the backing material. Penetration of fabrics by water is often critically dependent on the surface properties of the backing material, and these properties gradually change due to cumulative contamination by the atmosphere and by previously
20、tested specimens. (4) It is free-standing and not dependent on elaborate plumbing and electrical fittings. Two papers have been published on the Wixa Shower Tester*. The first described the apparatus in detail and included extensive results which showed that this method of test gave a high degree of
21、 discrimination between different fabrics. The second paper gave results of an inter-laboratory trial. * J, Text. Inst., 1972,63, 299. Text. Inst. andhdustry, 1973, No. 2,41. 2 COPYRIGHT British Standards Institution on ERC Specs and StandardsLicensed by Information Handling ServicesBSI BS*50bb 7L1
22、362Llbb9 OL70b75 7 BS 5066 : 1974 British Standard Method of test for The resistance of fabrics to an artificial shower 1. Scope This British Standard describes a method for determination of the resistance of fabrics to an artificial shower using the instrument known as Wira Shower Tester. The metho
23、d of test is applicable to most fabrics, and it is appropriate for fabrics which have been given a water repellent treatment (see Appendix A). NOTE. The title of the British Standard referred to in this standard is given on the inside back cover. 2. Principle The test uses apparatus which is based o
24、n a method of drop propagation (British Patent 1, 131,095) which pro- duces a sustained and uniform shower of well separated drops of distilled water. The shower falls on specimens of fabric of known mass mounted under tension and in contact with an inclined ribbed-glass backing plate. For each test
25、, 500 ml of water is used. At the end of the test the water retained by the fabric (percentage absorption) and the total volume of water that has passed through the fabric (penetration in millimetres) are measured. The time for the first 10 ml of water to pass through the fabric, if it occurs during
26、 the test, may be observed if required. 3. Apparatus The apparatus shall comprise: (1) Wira Shower Tester (see Appendix B and Fig. 1). The Wira Shower Tester consists of two identical units side by side, for testing twospecimens simultaneously. Each unit comprises a shower head and a fabric backing
27、assembly, and the following accessories are required: a A gauge for checking the flatness of the perforated plate in the shower head. b. A line gauge, inclination gauge and height gauge for adjusting the fabric backing assembly. c. Eight ribbed-glass backing plates for the fabric backing assembly, a
28、nd a suitable rack to hold the plates. d. Two 2 litre beakers for cleaning the ribbed-glass plates. e, Cleaning fluid for the ribbed-glass plates. (2) Wira Cloth Shaker (see Appendix B.2). (3) Four airtight containers for the specimens. (Plastics containers, height 150 mm diameter 70 mm, with (4) A
29、balance for determining the mass of the airtight containers to an accuracy of 1 mg. (5) A stopwatch. (6) Filter paper discs, diameter 90 mm and of high porosity*. (7) A glass rod with rounded end, of diameter approximately 5 mm. (8) 50 ml and 500 ml cylinders, to be used only for transferring distil
30、led water to the shower head. (9) A range of cylinders, 10 ml to SOO ml, for measuring penetration. press-on lids are convenient.) (10) Paper tissues, free from surface active agents. 4. Conditioning and testing atmosphere The atmosphere for conditioning and testing shall be the standard atmosphere
31、for testing textiles defined in BS 105 1, i.e. a relative humidity of 65 f 2 % and a temperature of 20 f 2 OC. 5. Preparation of test specimen 5.1 Ensure that the sample is representative of the bulk fabric and is taken by cutting and not by tearing. A reason- able sample size is a fuli width strip
32、(i.e. selvedge to selvedge) measuring 500 mm in length. *Suitable grades are Whatman Grade 90, Barcham Green No. 940, or equivalents. 3 COPYRIGHT British Standards Institution on ERC Specs and StandardsLicensed by Information Handling ServicesES1 BSmSObb 74 W Lb24bb OL70b7b 9 W BS 5066 : 1974 5.2 Ma
33、rk out on the face side of the sample four rectangular specimens, each 125 mm X 250 mm, with long edges parallel to the 500 mm edge. Select marking out areas so as to represent the sample as fuily as possible but avoid creased areas and take specimens at least 100 mm away from the selvedge. 5.3 Numb
34、er each specimen on the face side and note the location of each numbered specimen in the sample. 5.4 Cut out the specimens and remove loose threads. 5.5 Condition the test specimens by bringing them into equilibrium with the standard atmosphere for testing (see Clause 4) by exposing them in this atm
35、osphere for at least 18 h. 6. Preparation of apparatus 6,l General precautions. Ensure that the hands are clean and free from traces of grease or soap before handling the shower head or ribbed-glass plates. It is important that cleaning and rinsing of these plates, described in 6.2, should be carrie
36、d out carefully and thoroughly. Splashing of the cleaning fluid on the bench or inadequate rinsing, for example, must be avoided since this could lead to contamination of the fabric before testing. 6.2 Cleaning the ribbed-glass plates 6.2.1 Place the rack holding eight plates in a sink. Attach a len
37、gth of rubber tube to the tap and rinse the plates by playing water over them for at least 0.5 min. Allow to drain for a few seconds. 6.2.2 Immerse the rack in a 2 litre beaker containing about 1.5 litres of cleaning fluid consisting of equal parts of a surface active cleaning agent* and ethanol. Le
38、ave for about 15 min. NOTE. Methanol may be used in place of ethanol but it is somewhat toxic and should be handled with caution. Alcohol ptepara- tions containing oils, e.g. surgical spirit, are unsuitable and should never be used. No other mixture of cleaning fluid has been demonstrated to be sati
39、sfactory. The fluid should be renewed every 2 months or after every 100 samples tested, whichever is the shorter. 6.2.3 Transfer the rack to the sink and again run water over the plates for at least 0.5 min. 6.2.4 Place the rack in another 2 litre beaker. Insert the rubber tube down to the bottom of
40、 the beaker on the side opposite the spout and run water slowly through the beaker for 10 min. Arrange the rack so that the plates are parallel to the flow of water to ensure thorough rinsing. NOTE. The beakers used for cleaning and rinsing should be labelled to distinguish them and should be used f
41、or these purposes only. 6.2.5 Take out the rack, discard the tap water and fill the beaker with warm distilled water (at about 50 OC). Immerse the rack for about i min. 6.2.6 Lift out the rack and allow the plates to drain and dry. Use paper tissues (see 3(10) to complete the drying and take care to
42、 avoid handling the ribbed side of the glass. NOTE. Each plate can be used twice before re-cleaning, unless the plate has been left exposed for more than 1 h between the first and second test or a different fabric is to be tested on the second occasion. 6.3 Preparation of reservoirs 6.3.1 Slide the
43、reservoirs out of the shower head and dry with the paper tissues taking care to avoid distorting the perforated bases. Place a disc of filter paper (see 3(6) on each perforated base, concave side downwards (the filter paper discs are slightly curled near the edges). 6,3.2 Using the clean cylinders r
44、eserved for this purpose (see 3(8), pour a few millilitres of distilled water on to the filter paper until it is thoroughly wet and adhering closely to the perforated base of the reservoir. Tip out any surplus water. If the paper isnot quite centralized adjust it gently using the glass rod with roun
45、ded end. Slide the reservoir back into the shower head. 6.3.3 Fill the 50 ml measuring cylinder with water and pour quickly but steadily into the centre of the reservoir. This will bring the water level up to about 8 mm on the reservoir depth scale. Without delay observe the image of the shower in t
46、he inclined mirror fixed under the back of the shower head. The drop frequency will normally be about the same for all drop sources. (Very rarely, slight streaming may occur from one or two holes due either to localized areas of poor contact between the paper and perforated plate or to a damaged pap
47、er; this is quickly cor- rected by gently stroking the paper near the hole with the rounded end of the glass rod or replacing the damaged paper.) The water level will fall to about 5 mm in a few seconds and the shower will stop. The reservoir is then ready for use. *Decon 90 has been found to be sui
48、table; it is manufactured by Decon Laboratories, Ellen Street, Portslade, Brighton BN4 1BQ. 4 COPYRIGHT British Standards Institution on ERC Specs and StandardsLicensed by Information Handling ServicesBS 5066 : 1974 6.4 Preparation of backing assemblies 6.4.1 Pour a small amount of water into the bo
49、ttom of the transparent box on each unit. This will run into the measuring cylinder and thence down the spillway into the 500 ml beaker. 6.4.2 Discard the water and leave these vessels in the drained state, i.e. do not dry them out. 6.4.3 Dry the edges of the transparent box and the clamp with paper tissues. 7. Test procedure 7.1 Place each of the four specimens in an airtight container and determine the mass of each to the nearest milli- gram, Ensure that the containers are quite dry before placing specimens inside (do not fold the specimens but roll parallel to short edges with
