1、BRITISH STANDARD Footwear Test methods for uppers, lining and insocks mi i- i lhermal insulation The European Standard EN 13521:2001 has the status ofa British Standard ICs 61.060 BS EN 13521:2002 Wk present to the responsible European committee any enquiries on the interpretation, or proposals for
2、change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. - A list of organizations represented on this committee can be obtained on request to its secretary. Cr oss-r e fer enc e s The British Standards which implement interna
3、tional or European publications referred to in this document may be found in the BSI Standards Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Find” facility of the BSI Standards Electronic Catalogue. A British Standard does not purport to includ
4、e all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, the EN
5、title page, pages 2 to 8, an inside back cover and a back cover. The BSI copyright date displayed in this document indicates when the document was last issued. O BSI 24 January 2002 ISBN O 580 38930 8 EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 13521 November 2001 ICs 61.060 English version
6、 Footwear - Test methods for uppers, lining and insocks - Thermal insu lation Chaussures - Mthodes dessai des tiges, de la doublure et des premires de propret - Isolation thermique Schuhe - Prfverfahren fr Schfte, Futter und Deckbrandsohlen - Wrmedmmung This European Standard was approved by CEN on
7、4 October 2001 CEN members are bound to comply with the CENKENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be
8、 obtained on application to the Management Centre or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the Managemen
9、t Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. EURO
10、PEAN COMMITTEE FOR STANDARDIZATION EUROPISCHES KOMITEE FR NORMUNG COMIT EUROPEN DE NORMALISATION Management Centre: rue de Stassart, 36 B-1050 Brussels O 2001 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 13521:2001 E EN 13521 :2
11、001 (E) Contents page Foreword 3 1 Scope 4 2 Normative references 4 3 Terms and definitions 4 4 Apparatus and material . 4 5 Sampling and conditioning . 6 6 Test method 6 6.1 Principle 6 6.2 Procedure . 6 7 Expression of results 7 8 Test report 8 2 EN 13521:2001 (E) Foreword This European Standard h
12、as been prepared by Technical Committee CEN/TC 309 “Footwear“, the secretariat of which is held by AENOR. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by May 2002, and conflicting national standar
13、ds shall be withdrawn at the latest by May 2002. According to the CENKENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Irel
14、and, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom. 3 EN 13521 :2001 (E) 1 Scope This European Standard specifies a test method for determining the thermal conductivity of uppers, lining and insocks irrespective of the material, in order to asses
15、s the suitability for the end use. 2 Normative references This European Standard incorporates by dated or undated reference, provisions from other publications. These normative references are cited at the appropriate places in the text, and the publications are listed hereafter. For dated references
16、, subsequent amendments to or revisions of any of these publications apply to this European Standard only when incorporated in it by amendment or revision. For undated references the latest edition of the publication referred to applies (including amendments). EN 12222 footwear. Footwear - Standard
17、atmospheres for conditioning and testing of footwear and components for 3 Terms and definitions For the purposes of this European Standard, the following terms and definitions apply. 3.1 thermal insulation thermal conductivity of a material under static conditions 3.2 upper materials forming the out
18、er surface of the footwear which is attached to the sole assembly and covers the upper dorsal surface of the foot. In the case of boots this also includes the outer face of the material covering the leg. Only the materials that are visible are included, no account should be taken of underlying mater
19、ials 3.3 complete upper assembly finished upper, fully seamed, joined or laminated as appropriate, comprising the centre material and any lining(s) together with all components such as interlinings, adhesives, membranes, foams or reinforcements, but excluding toe puffs and stiffeners NOTE The comple
20、te upper assembly can be flat, 2-dimensional or comprise lasted upper in the final footwear. 4 Apparatus and material The following apparatus and material shall be used: 4.1 ?Lees? disc? apparatus, see Figure 1, including the following: 4.1.1 Cylindrical brass block, which will subsequently be refer
21、red to as block BI, with: 4.1.1.1 Diameter of approximately 75 mm which is known with an accuracy of 0,2 mm. 4.1.1.2 Height of approximately 25 mm which is known with an accuracy of 0,2 mm. 4.1.1.3 Hole of diameter 2 mm f 0,l mm drilled radially to its centre. 4.1.1.4 Type K thermocouple inserted in
22、to the hole until its junction is at the bottom of the hole. 4 EN 13521:2001 (E) 4.1.1.5 Remaining volume of the hole shall be filled with a high thermal conductivity compound with a thermal conductivity of better than 0,8 W/(m OC), for example a metal oxide filled paste of the type used between hig
23、h power semiconductor electronic devices and heat sinks. 4.1.2 Circular electrical heater element which: 4.1.2.1 4.1.2.2 Has a diameter the same as that of the blocks in 4.1 .I, with a tolerance of f 0,5 mm. Is capable of dissipating a minimum power density of 400 W/m2 from each of its circular face
24、s. 4.1.2.3 Has a cylindrical brass block and thermocouple of the same dimensions as block BI bonded to both its top and bottom faces with a high thermal conductivity adhesive compound. These two blocks will subsequently be referred to as B2 and B3. 4.1.3 A fourth cylindrical brass block fitted with
25、a thermocouple as in 4.1 .I of the same diameter as block BI but of height (8 f 2) mm. This is for measuring the ambient temperature of the surrounding atmosphere and will subsequently be referred to as block B4. 4.1.4 A power supply unit connected to the heater element (4.1.2). The unit should be c
26、apable of supplying sufficient power to enable the heater element to dissipate a power density of 400 W/m2 from each of its circular faces. 4.1.5 Means of measuring the power being supplied to the heater element to an accuracy off 4 mW 4.1.6 edges of the assembly. Means of mounting the heater and bl
27、ock assembly so that air can circulate freely around all the outside 4.1.7 cylindrical blocks to an accuracy off 0,2 OC. Device capable of measuring and displaying the temperatures of the thermocouples in the four brass 4.2 block BI, with a tolerance of f 0,5 mm. Circular press knife or similar devi
28、ce for cutting circular test specimens of the same diameter as the 4.3 measuring to the nearest 0,Ol mm. Dial thickness gauge which applies a pressure of (2,O f 0,2) kPa to the test specimen and is capable of 5 EN 13521 :2001 (E) 1 Test specimen 2 Block BI 3 Temperature display 4 Heater 5 Block B2 6
29、 Switching device 7 Block B3 8 Block B4 Figure 1 - Lees disc thermal conductivity apparatus 5 Sampling and conditioning 5.1 48 h prior to cutting test specimens. Store the uncut sheet material in a conditioned standard atmosphere as specified in EN 12222 for at least 5.2 Cut two circular test specim
30、ens of the same diameter as the metal block BI, with a tolerance of f 0,5 mm. NOTE Test specimens can be taken either from materials likely to be used for uppers and linings or from made-up uppers or finished footwear. Prepare test specimens from complete upper assemblies when the lining material is
31、 permanently attached to the upper material. 6 Test method 6.1 Principle A constant heat source is sandwiched between two identical metal cylinders which are mounted with their axes vertical. A test specimen is placed on the top surface of the upper cylinder and a third identical metal cylinder is p
32、laced on top of the test specimen so that all the cylinders and the test specimen are concentrically aligned. The heat source is switched on and the temperatures of the three blocks allowed to reach equilibrium. The thermal conductivity of the test specimen is then determined from the steady state t
33、emperatures of the three blocks, the exposed surface areas of the blocks and test specimen and the thickness of the test specimen. 6.2 Procedure 6.2.1 record these two values to the nearest 0,05 mm. 6 Use the thickness gauge (4.3) to measure the thickness S, in mm, at the centre of each test specime
34、n and EN 13521:2001 (E) 6.2.2 Ensure that the heater assembly (4.1.2) is mounted vertically so that block B2 is above block B3, see Figure 1. Place the apparatus in a temperature controlled atmosphere as specified in EN 12222 and position it so that air can circulate freely around the assembly. 6.2.
35、3 Place one of the test specimens onto the upper surface of block B2 and carefully rest the block BI on top of the test specimen. The surface of the test specimen which will be nearest the foot shall be placed against block B2 so that it is closest to the heater element. Adjust the positions of the
36、block BI and the test specimen until they are both concentrically aligned with the heater assembly (4.1.2). 6.2.4 cylindrical blocks, B2 and B3, to a steady state temperature of 35 OC f 5 OC. Switch on the power supply unit (4.1.4) and adjust until it is delivering sufficient power to heat the brass
37、 NOTE Typically a current of 0,14 A at a voltage of 18 V is required to achieve a steady state temperature of 35 OC f 5 OC. 6.2.5 the nearest 0.2 OC. At regular intervals of approximately 30 min record the temperature of the four blocks BI, B2, B3 and B4 to 6.2.6 When three sets of successive readin
38、gs are found to be within f 0,2 OC for each block then the test shall be terminated. Record the temperatures, in OC, of the four blocks as TE, TE, TE3 and TE4 respectively. Remove the test specimen and block BI from the heater assembly (4.1.2) and repeat the procedure in 6.2.3 to 6.2.6 for the other
39、 test specimen. 7 Expression of results 7.1 Calculate the exposed area, in square metres (m), of blocks BI, B2 and B3 using: Exposed area of block BI = AI = 7: . D. ( 0,25 . D) + H Exposed area of block B3 = A31 = 7: . D. (0,25 . D) + H Exposed area of block B2 = A21 = H. 7: . D where A is the expos
40、ed area, in square metres (m); D is the diameter of blocks as in 4.1 .I .I and 4.1.2.3, in metres (m); H is the height of blocks as in 4.1 .I .2, in metres (m). NOTE All diameter and height measurements are converted from mm to m by dividing them by 1 000. 7.2 For each test specimen calculate: 7.2.1
41、 Exposed area, in square metres (m), of test specimen using: Exposed area of test specimen = A, = S. 7: . D where S is the thickness of test specimen measured in 6.2.1, in metres (m); D is the diameter of test specimen (see 5.2), in metres (m). 7.2.2 Power, in watts, supplied to heater using: Power
42、supplied = P = V. I 7 EN 13521 :2001 (E) where Vis the voltage supplied to heater, in volts (V); I is the current supplied to the heater, in amperes (A). 7.2.3 The temperatures, in OC, of blocks BI, B2, and B3 above ambient as: TI = TE1 - TE4 T2 = TE2 - TE4 T3 = TE3 - TE4 7.2.4 The average temperatu
43、re, in OC, of the test specimen, T, where: T, = 0,5 ( TI + T2 ) 7.2.5 The thermal conductivity of the test specimen, K, in watts per metre per degree Celsius (W/m OC ) using: (Al TI + A, T, + A2 . T2 + A3 . T3) . (0,5 . 7: . o“ (T2 - TI) 7.3 Calculate the arithmetic mean of the two values of thermal
44、 conductivity, Ka, to three significant figures. 7.4 (m OCW) from the arithmetic mean of the thermal conductivities using the equation: Calculate the average thermal resistance of the test specimens, R, in square metres degree Celsius per watt Thermal resistance = Sa Ka where Sa is the arithmetic me
45、an thickness of the two specimens, in metres (m); Ka is the arithmetic mean thermal conductivity, in watts per metre per degree Celsius (W/m OC). 8 Testreport The test report shall include the following information: a) the arithmetic mean thermal conductivity as calculated in 7.3; b) the average the
46、rmal resistance as calculated in 7.4; c) a description of the material including commercial references (style codes, etc.); d) a description of any lining or other reinforcement present; e) f) g) date of testing; reference to the method of test; the pressure on the test specimen (derived from mass o
47、f block BI and surface area of block); h) any deviations from this test method. 8 BS EN 13521:2002 BSI 389 Chiswick High Road Lon don w4 4AL BSI is the independent national body responsible for preparing British Standards. It presents the UK view on standards in Europe and at the international level
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