1、 ISO 2016 Rubber- or plastics-coated fabrics Determination of resistance to penetration by water Supports textiles revtus de caoutchouc ou de plastique Dtermination de la rsistance la pntration de leau INTERNATIONAL STANDARD ISO 1420 Fourth edition 2016-07-01 Reference number ISO 1420:2016(E) ISO 14
2、20:2016(E)ii ISO 2016 All rights reserved COPYRIGHT PROTECTED DOCUMENT ISO 2016, Published in Switzerland All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying
3、, or posting on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below or ISOs member body in the country of the requester. ISO copyright office Ch. de Blandonnet 8 CP 401 CH-1214 Vernier, Geneva, Switzerland Tel. +41 22 749 01
4、 11 Fax +41 22 749 09 47 copyrightiso.org www.iso.org ISO 1420:2016(E)Foreword iv Introduction v 1 Scope . 1 2 Normative references 1 3 Principle 1 4 Apparatus . 1 4.1 Method A 1 4.2 Method B 3 5 Test pieces . 4 5.1 Taking test pieces 4 5.2 Number 4 5.3 Shape and dimensions 4 5.3.1 Square piece . 4
5、5.3.2 Circular piece 4 6 Atmosphere for conditioning 4 7 Time-interval between manufacture and testing. 4 8 Procedure. 5 8.1 Method A (for hydrostatic pressure less than 500 kPa) 5 8.2 Method B (for hydrostatic pressure less than 100 kPa) 5 9 Expression of results 6 10 Test report . 6 ISO 2016 All r
6、ights reserved iii Contents Page ISO 1420:2016(E) Foreword ISO (the International 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
7、 member body interested in a subject for which a technical committee has been established 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 Internationa
8、l Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. The procedures used to develop this document and those intended for its further maintenance are described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the different
9、types of ISO documents should be noted. This document was drafted in accordance with the editorial rules of the ISO/IEC Directives, Part 2. www.iso.org/directives 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 he
10、ld responsible for identifying any or all such patent rights. Details of any patent rights identified during the development of the document will be in the Introduction and/or on the ISO list of patent declarations received. www.iso.org/patents Any trade name used in this document is information giv
11、en for the convenience of users and does not constitute an endorsement. For an explanation on the meaning of ISO specific terms and expressions related to conformity assessment, as well as information about ISOs adherence to the WTO principles in the Technical Barriers to Trade (TBT), see the follow
12、ing URL: Foreword - Supplementary information The committee responsible for this document is ISO/TC 45, Rubber and rubber products, Subcommittee SC 4, Products (other than hoses). This fourth edition cancels and replaces the third edition (ISO 1420:2001), which has been technically revised.iv ISO 20
13、16 All rights reserved ISO 1420:2016(E) Introduction The resistance to penetration by water is often used as a measure of the water-proofing of rubber- or plastics-coated fabrics when a product made from the coated fabric is exposed to various service conditions in the field. There are some environm
14、ental factors that affect the resistance to water penetration such as temperature, pressure or chemicals in water, however, the methods in this International Standard only measure the property at a low to high hydrostatic pressure level at ambient temperature. ISO 2016 All rights reserved v Rubber-
15、or plastics-coated fabrics Determination of resistance to penetration by water WARNING Persons using this International Standard should be familiar with normal laboratory practice. This International Standard does not purport to address all of the safety problems, if any, associated with its use. It
16、 is the responsibility of the user to establish appropriate safety and health practices and to ensure compliance with any national regulatory conditions. 1 Scope This International Standard specifies two methods for the determination of the resistance of rubber- or plastics-coated fabrics to water p
17、enetration (hydrostatic resistance) when subjected to a specific hydrostatic pressure over a fixed period of time. Method A specifies the procedure for a low and high hydrostatic pressure and Method B for a low hydrostatic pressure. 2 Normative references The following documents, in whole or in part
18、, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 2231:1989, Rubber- or plastics-coated fabrics S
19、tandard atmospheres for conditioning and testing ISO 2286-1, Rubber- or plastics-coated fabrics Determination of roll characteristics Part 1: Methods for determination of length, width and net mass 3 Principle A test piece of coated fabric is subjected to an increasing pressure of water on one face,
20、 under standard conditions, until a predetermined pressure specified in the coated-fabric specification is obtained. The required pressure is maintained for a specified time or until penetration occurs, whichever is the sooner. 4 Apparatus 4.1 Method A 4.1.1 The apparatus shall consist of a test pie
21、ce supporting plate fitted with a clamp tightening ring to fasten the test piece over the mouth by use of an upper screw handle. The lower part of the vessel shall have a pressure gauge and a nozzle connected with a cylinder that has a mechanical system delivering high pressure water. The other side
22、 of the cylinder shall be connected with a water inlet pipe through a three-way valve. The whole system shall have a capability of holding a hydrostatic pressure of 500 kPa at an ambient temperature for a certain period of time. Illustrative examples of the parts of apparatus are given in Figures 1,
23、 2 and 3. INTERNATIONAL ST ANDARD ISO 1420:2016(E) ISO 2016 All rights reserved 1 ISO 1420:2016(E) Dimensions in millimetres Key 1 upper screw handle 7 three-way-valve 2 clamp tightening ring 8 cylinder 3 test piece supporting plate (see Figure 2) 9 piston handle 4 test piece 10 water inlet 5 seal r
24、ing 11 pressure gauge 6 vessel Figure 1 An example of the apparatus for Method A Dimensions in millimetres Figure 2 Test piece supporting plate2 ISO 2016 All rights reserved ISO 1420:2016(E) Key 1 water inlet 6 water exit 2 pressure gauge 7 vessel 3 three-way-valve 8 clamp tightening ring 4 cylinder
25、 9 screw 5 piston handle 10 upper screw handle Figure 3 An example of the apparatus for Method A 4.1.2 Pressure gauge, capable of 600 kPa with direct connection with the vessel in order to measure the hydrostatic pressure inside the vessel. 4.1.3 Test area, an open circle of diameter 100 mm in the m
26、outh of the vessel. The surface of the mouth end and the clamp tightening ring, which contact the test piece on each side shall be covered with a rubber seal such as an o-ring or an equivalent to prevent the test piece rupturing when a high hydrostatic pressure is applied. 4.1.4 Test piece supportin
27、g plate, a metallic plate of 5 mm thickness equidistantly perforated with 45 small holes of 3 mm diameter, which directly pushes the test piece over the plate using the clamp tightening ring. See Figure 2. 4.2 Method B 4.2.1 The apparatus shall consist of an open-mouthed vessel fitted with a clamp t
28、o fasten the test piece over the mouth. The lower part of the vessel shall have a nozzle allowing it to be connected to a water inlet pipe to fill it with water at room temperature. A retaining mesh is fitted over the test piece. This mesh shall comprise wires of 1 mm to 1,2 mm diameter forming squa
29、res of side not greater than 30 mm. 4.2.2 Means of measuring water pressure, either a manometer, connected to the test head, allowing water pressures up to 19,6 kPa (200 cmH 2 O) to be read to an accuracy of 1 %, or a pressure gauge, ISO 2016 All rights reserved 3 ISO 1420:2016(E) graduated in kilop
30、ascals (centimetres head of water) and with a maximum reading of at least 100 kPa (1 020 cmH 2 O) to measure the water pressure applied to the test piece. 4.2.3 Test area, the open mouth of the vessel over which the test piece is clamped. The test piece shall be either a square of side 100 mm or a c
31、ircle of diameter 113 mm, giving an area of 100 cm 2in each case. If necessary, soft rubber sealing gaskets can be employed between the coated-fabric test piece and the surfaces of the clamps in order to reduce the risk of damage to the test piece by the clamps and to facilitate the testing of seams
32、. In this respect, rubber having a hardness of approximately 40 IRHD (International Rubber Hardness Degrees) and approximately 0,5 cm thick or 1 cm in diameter can be useful. Alternatively, a closed-cell, cross-linked-polyethylene foam having a density of 45 kg/m 3to 55 kg/m 3and approximately 1 cm
33、thick can also be used. 5 Test pieces 5.1 Taking test pieces Take test pieces from an area with no functional or visible defects and located within the usable width of the coated fabric as defined in ISO 2286-1. 5.2 Number Unless otherwise specified in the material specification, test the specimens
34、in each series of tests as follows. a) For Method A: three test pieces. b) For Method B: five test pieces. 5.3 Shape and dimensions 5.3.1 Square piece The test piece in each method shall have the dimension as follows. a) For Method A: a square with sides measuring approximately 150 mm. b) For Method
35、 B: a square with sides measuring approximately 200 mm. 5.3.2 Circular piece The test piece in Method A and B shall have a diameter of 130 mm to 200 mm. 6 Atmosphere for conditioning The atmosphere shall be the method of conditioning “1” specified in ISO 2231:1989. For fabrics coated on one side onl
36、y, a minimum of 16 h exposure is recommended. For fabrics coated on both sides, a minimum of 24 h exposure is recommended. 7 Time-interval between manufacture and testing For all test purposes, the minimum time between manufacture and testing shall be 16 h. For non- product tests, the maximum time b
37、etween manufacture and testing shall be 4 weeks, and for evaluations intended to be comparable, the tests, as far as possible, shall be carried out after the same time-interval.4 ISO 2016 All rights reserved ISO 1420:2016(E) For products, unless otherwise agreed between the interested parties, the t
38、ime between manufacture and testing shall not exceed 3 months. 8 Procedure 8.1 Method A (for hydrostatic pressure less than 500 kPa) 8.1.1 Open the clamp tightening ring, open the three-way valve and pour water into the vessel, let it overflow from the vessel mouth and fill the cylinder with water.
39、Then close the three-way valve. 8.1.2 Place the test piece facing the side to be tested on to the vessel mouth. Then place the test piece supporting plate (4.1.4) on top of the specimen and tighten the clamp tightening ring by rotating the upper screw handle. 8.1.3 Start to supply water to apply the
40、 specified hydrostatic pressure by rotating the piston handle. 8.1.4 Once the required pressure has been reached, adjust the piston handle and maintain the pressure for 1 min. In the case of apparel product use, the pressure to be maintained is 200 kPa. In the case of industrial product use, the pre
41、ssure to be maintained is 300 kPa. By agreement between the interested parties, the pressure and the time to be maintained may be changed. 8.1.5 Examine the visible part of the test piece over the test piece supporting plate to see if there are any signs of water leakage or other abnormalities befor
42、e releasing the pressure. 8.1.6 Release the hydrostatic pressure, open the clamp tightening ring and the test piece supporting plate. Remove the test piece and examine it again to see if water leakage or any abnormality has occurred. If there are any, record it in the test report, otherwise repeat t
43、he procedure for the rest of test pieces. 8.2 Method B (for hydrostatic pressure less than 100 kPa) 8.2.1 With the vessel connected to the water inlet pipe, open the inlet valve and allow the water to run into the vessel until it overflows. Check that the top of the vessel is horizontal by ensuring
44、that the water is uniformly flush with all edges. Ensure that the inlet pipe is totally purged of air, and also that the level of water in the vessel corresponds to the zero on the manometer tube or pressure gauge (see 4.2.2). 8.2.2 Place the test piece on the vessel with the face to be tested (mois
45、tened prior to the test) in contact with the water, without trapping any air under the test piece. 8.2.3 Fit the retaining mesh (see 4.2.1). Secure the test piece and the mesh firmly on the vessel using the clamp, taking care to ensure that the edges of the clamp are completely parallel with those o
46、f the vessel. 8.2.4 Open the inlet valve so that the pressure in the vessel gradually increases at the required rate. Pressures less than or equal to 30 kPa shall be attained in 1 min 10 s; pressures of more than 30 kPa shall be attained in 2 min 20 s. Verify the pressure. 8.2.5 Once the required pr
47、essure has been reached, adjust the inlet valve, if necessary, and maintain the pressure for the required time. Pressures less than or equal to 30 kPa shall be maintained for 2 min. Pressures of more than 30 kPa shall be maintained for 5 min. The test duration will therefore be 3 min in the former c
48、ase and 7 min in the latter. 8.2.6 Then examine the visible part of the test piece in order to detect whether any water droplets have passed through the coated fabric. ISO 2016 All rights reserved 5 ISO 1420:2016(E) 8.2.7 Close the water inlet valve and return the pressure to zero by opening the eva
49、cuation valve. If a leak is detected in the test piece clamping zone during the test, begin again. 9 Expression of results The visible face of the coated fabric shall not have any “water penetration points”, nor any trace of moisture, on any of the test pieces. A “water penetration point” is considered to be any spot in which a drop appears as a pin prick. Penetration occurring exactly on the edges of the clamp shall not be considered to be a “water penetration point”. 10 Test report The test report shall include the f
