1、BSI Standards PublicationBS ISO 16616:2015Test methods for natural fibre-reinforced plastic composite(NFC) deck boardsBS ISO 16616:2015 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of ISO 16616:2015.The UK participation in its preparation was entrusted to Technical
2、Committee PRI/75, Plastics and rubber film and sheets.A list of organizations represented on this committee can beobtained on request to its secretary.This publication does not purport to include all the necessaryprovisions of a contract. Users are responsible for its correctapplication. The British
3、 Standards Institution 2015. Published by BSI StandardsLimited 2015ISBN 978 0 580 73727 5ICS 83.140.99Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of theStandards Policy and Strategy Committee on 31 August 201
4、5.Amendments issued since publicationDate Text affectedBS ISO 16616:2015 ISO 2015Test methods for natural fibre-reinforced plastic composite (NFC) deck boardsMthodes dessai pour les planches en composite bois-plastique (WPC)INTERNATIONAL STANDARDISO16616First edition2015-08-01Reference numberISO 166
5、16:2015(E)BS ISO 16616:2015ISO 16616:2015(E)ii ISO 2015 All rights reservedCOPYRIGHT PROTECTED DOCUMENT ISO 2015, Published in SwitzerlandAll 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 me
6、chanical, including photocopying, 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 officeCh. de Blandonnet 8 CP 401CH-1214 Vernier, Geneva, S
7、witzerlandTel. +41 22 749 01 11Fax +41 22 749 09 47copyrightiso.orgwww.iso.orgBS ISO 16616:2015ISO 16616:2015(E)Foreword vIntroduction vi1 Scope . 12 Normative references 13 Terms and definitions . 24 Test specimens 25 Conditioning 26 Test method . 26.1 Density . 26.1.1 Test method 26.1.2 Test speci
8、mens. 26.1.3 Immersion liquid . 26.1.4 Procedure . 26.2 Maximum bending load . 36.2.1 Test specimens. 36.2.2 Test method 36.3 Bending creep strain 46.3.1 Test specimens. 46.3.2 Test method 46.4 Impact resistance 46.4.1 Test specimens. 46.4.2 Test method 46.5 Impact strength 56.5.1 Test specimens. 56
9、.5.2 Test method 56.6 Distortion . 66.6.1 Test specimens. 66.6.2 Test method 66.7 Screw holding strength 66.7.1 Test specimens. 66.7.2 Test method 76.8 Skid resistance 76.8.1 Test specimens. 76.8.2 Test method 76.9 Water absorption 96.9.1 Test specimens. 96.9.2 Test method 96.10 Freeze and thaw test
10、 . 116.10.1 Test specimens116.10.2 Test method . 126.11 Lengthwise linear thermal expansion coefficient 126.12 Weatherproofing 126.12.1 Test specimens126.12.2 Test method . 126.13 Harmful substance test . 136.14 Formaldehyde emission . 136.14.1 Test specimens136.14.2 Test method . 136.15 Burning beh
11、aviour 136.16 Resistance against discolouration caused by microorganisms 136.16.1 Resistance against discolouring micro-fungi .136.16.2 Resistance against discolouring algae 13 ISO 2015 All rights reserved iiiContents PageBS ISO 16616:2015ISO 16616:2015(E)7 Test reports .14Bibliography .15iv ISO 201
12、5 All rights reservedBS ISO 16616:2015ISO 16616:2015(E)ForewordISO (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.
13、Each 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 Internat
14、ional 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 differe
15、nt types of ISO documents should be noted. This document was drafted in accordance with the editorial rules of the ISO/IEC Directives, Part 2 (see 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 n
16、ot be held 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 (see www.iso.org/patents).Any trade name used in this document is in
17、formation given 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
18、 the following URL: Foreword - Supplementary informationThe committee responsible for this document is ISO/TC 61, Plastics, Subcommittee SC 11, Products. ISO 2015 All rights reserved vBS ISO 16616:2015ISO 16616:2015(E)IntroductionNatural fibre-reinforced composite (NFC) or wood-plastics composite (W
19、PC) is made from one or more natural fibres or flours and a polymer or mixture of polymers. Natural fibres and flours come from different vegetable sources. Any kinds of polymers, virgin or recycled, can be used but currently the most common ones are poly(vinyl chloride), polypropylene, and polyethy
20、lene. For editorial reasons, in this International Standard, the term and abbreviation “natural fibre-reinforced composite” (NFC) is used instead of “wood-plastics composite” (WPC).NFC materials can be considered neither as filled plastics nor as a special kind of wood material. They are to be consi
21、dered as different materials having their own characteristics.At present, the main application of NFC products is deck boards. NFC deck boards can be processed by different techniques, as extruding for profiles and pipes, compression moulding or injection moulding.Recently, industrial interests have
22、 focused on NFC as a composite material partially derived from biomass.However, as NFCs main constituents are hydrophilic natural fibres and hydrophobic polymer(s), problems such as cracking, bending, and strength reduction may occur in case of long-term use due to their different characteristics in
23、 the use environment related to e.g. moisture, UV resistance and thermal changes. However, due to the lack of standardized testing methods to evaluate the performance and durability of NFC, it is difficult to give the orientation for the product development and to protect the consumers interest. Con
24、sequently International Standards are being established in order to encourage technology development in the NFC production field and to protect consumers from NFC products of low quality.vi ISO 2015 All rights reservedBS ISO 16616:2015Test methods for natural fibre-reinforced plastic composite (NFC)
25、 deck boards1 ScopeThis International Standard provides test methods of natural fibre-reinforced composite (NFC) deck boards used in exterior applications. This International Standard will cover the preparation of specimen, test equipments, procedures of measurements and evaluation methods.2 Normati
26、ve referencesThe following referenced documents, in whole or in part, 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 amen
27、dments) applies.ISO 178, Plastics Determination of flexural propertiesISO 179-1, Plastics Determination of Charpy impact properties Part 1: Non-instrumented impact testISO 291, Plastics Standard atmospheres for conditioning and testingISO 868, Plastics and ebonite Determination of indentation hardne
28、ss by means of a durometer (Shore hardness)ISO 899-2, Plastics Determination of creep behaviour Part 2: Flexural creep by three-point loadingISO 1183-1, Plastics Methods for determining the density of non-cellular plastics Part 1: Immersion method, liquid pyknometer method and titration methodISO 14
29、78, Tapping screws threadISO 4892-2, Plastics Methods of exposure to laboratory light sources Part 2: Xenon-arc lampsISO 8124-3, Safety of toys Part 3: Migration of certain elementsISO 9239-1, Reaction to fire tests for floorings Part 1: Determination of the burning behaviour using a radiant heat so
30、urceISO 11359-2, Plastics Thermomechanical analysis (TMA) Part 2: Determination of coefficient of linear thermal expansion and glass transition temperatureISO 11664-1, Colorimetry Part 1: CIE standard colorimetric observersISO 11664-2, Colorimetry Part 2: CIE standard illuminantsISO 11664-4, Colorim
31、etry Part 4: CIE 1976 L*a*b* Colour spaceISO 12460-4, Wood-based panels-Determination of formaldehyde releaseISO 18314-1, Analytical colorimetry Part 1: Practical colour measurement (in preparation)EN 15534-1, Composites made from cellulose-based materials and thermoplastics (usually called wood pol
32、ymer composites (WPC) or natural fibre composites (NFC) Part 1: Test methods for characterization of compounds and productsINTERNATIONAL STANDARD ISO 16616:2015(E) ISO 2015 All rights reserved 1BS ISO 16616:2015ISO 16616:2015(E)3 Terms and definitionsFor the purposes of this document, the following
33、terms and definitions apply.3.1natural fibre compositeNFCproduct made thereof being the result of the combination of one or several cellulosic materials with one or several thermoplastics3.2solid type boardboard that have a totally filled cross sectionNote 1 to entry: It can be fixed to the supports
34、 by using anchoring clips or screws.3.3structured type boardboard that have hollow parts in the cross sectionNote 1 to entry: It can be fixed to the supports by using anchoring clips or screws.Note 2 to entry: It is available e.g. in hollow, honeycomb, and arch types.4 Test specimensUnless otherwise
35、 specified, test specimens having the actual thickness and width of the product shall be used for testing. Sampling may be agreed between the supplier and the applicant.5 ConditioningUnless otherwise specified in the relevant test method, the test specimens shall be conditioned during at least 72 h
36、in the standard atmosphere 23/50 according to ISO 291 (23 2) C, (50 10) % RH.6 Test method6.1 Density6.1.1 Test methodThe density of NFC materials shall be determined according to ISO 1183-1 Method A (immersion method).6.1.2 Test specimensThe density of NFC materials shall be measured using test spe
37、cimens which the mass is at least 1,0 g.6.1.3 Immersion liquidUse freshly distilled or deionised water containing not more than 0,1 % of a wetting agent to help removing air bubbles. The liquid with which the test specimens come into contact during the measurement shall have no effect on the test sp
38、ecimens.6.1.4 ProcedureWeigh the test specimen, to the nearest 0,1 mg, in air while suspended with a wire of maximum diameter 0,5 mm. Record the mass of the test specimen.2 ISO 2015 All rights reservedBS ISO 16616:2015ISO 16616:2015(E)Immerse the test specimen into the immersion liquid. The temperat
39、ure of the immersion liquid shall be (23 2) C. Remove any adhering air bubbles with a fine wire before weighing the mass of the test specimen in the liquid. Weigh the immersed test specimen to the nearest 0,1 mg.Calculate the density s, in grams per cubic centimetre, of the test specimen at (23 2) C
40、, using Formula (1):SwSASA SILmmm=,(1)wherewis the density of water at 23 C (=0,998 2 g cm3);mS,Ais the mass, in grams, of the test specimen in air;mS,ILis the mass, in grams, of the test specimen in the immersion liquid.6.2 Maximum bending load6.2.1 Test specimensUse the width and thickness of the
41、product as the width and thickness of the test specimen; and the length of the test specimen shall be 100 mm longer than the span length of the supports of the actual construction. If the span length of the supports is not specified, choose 600 mm as a length of specimen.6.2.2 Test methodFor the max
42、imum bending load test, determine the radius of the pressing rod and the supports, and the testing speed in accordance with ISO 178, and then measure the maximum bending load by positioning the test specimen as shown in Figure 1. The side which is exposed upwards in construction shall be placed upwa
43、rds for maximum bending load test. Perform the test using three specimens, and then obtain the mean value.Dimensions in millimetresKey1 test specimen2 applied loadL length of the test specimenFigure 1 Testing apparatus for the determination of the maximum bending load ISO 2015 All rights reserved 3B
44、S ISO 16616:2015ISO 16616:2015(E)6.3 Bending creep strain6.3.1 Test specimensThe dimensions of the specimen for the bending creep strain test shall follow those of 6.2.1.6.3.2 Test methodThe testing apparatus as defined in 6.2 shall be used in the bending creep test. Increase the load to 850 N withi
45、n 5 s in accordance with ISO 899-2, and, after maintaining this loaded state for 312 h, calculate the bending creep strain according to Formula (2) after durations of 168 h and 312 h at (23 2) C or durations of 48 h and 96 h at (50 5) C. The side which is exposed upwards in construction shall be pla
46、ced upwards for bending creep strain test. Perform the test using three specimens, and then obtain the mean value.ttshL=()6002% (2)wheretis bending creep strain;Stis the central deformation between the supports at time (t), expressed in millimetres;h is the thickness of the test specimen, expressed
47、in millimetres;L is the distance between the supports, expressed in millimetres.6.4 Impact resistance6.4.1 Test specimensThe dimensions of the impact resistance test shall follow those of 6.2.1.6.4.2 Test methodIf supports are used in the test, position and fix the test specimen on the supports, dro
48、p a steel ball (weighing 1 042 5 g and measuring 64 mm in diameter) from a height of 100 cm. In case of solid type, record the indents to an accuracy of 0,1 mm. And in case of structure type, record the cracks or indents to an accuracy of 0,1 mm.If no support is used in the construction, fix the spe
49、cimen at a height of 10 cm or more from the bottom, as shown in Figure 2. Perform the tests in two kinds of conditions as described below and record the results.The impact position can be decided by testing body and the client, but the weakest positions except edges are recommended.For testing at the room temperature condition, maintain the test specimens at (23 2) C and (50 10) % relative humidity for 3 d or more.For testing at low temperature condition, maintain the tes
