EN 15348-2014 en Plastics - Recycled plastics - Characterization of poly(ethylene terephthalate) (PET) recyclates《塑料 再生塑料 聚对苯二甲酸乙二醇酯(PET)回收物的特性》.pdf

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1、BSI Standards PublicationBS EN 15348:2014Plastics Recycled plastics Characterization ofpoly(ethylene terephthalate)(PET) recyclatesBS EN 15348:2014 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN 15348:2014. Itsupersedes BS EN 15348:2007 which is withdrawn.The U

2、K participation in its preparation was entrusted to TechnicalCommittee PRI/89, Plastics recycling.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 respons

3、ible for its correctapplication. The British Standards Institution 2014. Published by BSI StandardsLimited 2014ISBN 978 0 580 81506 5ICS 13.030.50; 83.080.20Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of theS

4、tandards Policy and Strategy Committee on 30 November 2014.Amendments issued since publicationDate Text affectedBS EN 15348:2014EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 15348 November 2014 ICS 13.030.50; 83.080.20 Supersedes EN 15348:2007English Version Plastics - Recycled plastics - Cha

5、racterization of poly(ethylene terephthalate) (PET) recyclates Plastiques - Plastiques recycls - Caractrisation des recyclats de poly(thylne trphtalate) (PET) Kunststoffe - Kunststoff-Rezyklate - Charakterisierung von Polyethylenterephthalat (PET)-Rezyklaten This European Standard was approved by CE

6、N on 20 September 2014. CEN members are bound to comply with the CEN/CENELEC 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 standa

7、rds may be obtained on application to the CEN-CENELEC 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 not

8、ified to the CEN-CENELEC Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, I

9、celand, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Ma

10、nagement Centre: Avenue Marnix 17, B-1000 Brussels 2014 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 15348:2014 EBS EN 15348:2014EN 15348:2014 (E) 2 Contents Page Foreword 3 Introduction .4 1 Scope 5 2 Normative references 5 3 T

11、erms and definitions .5 4 Characterization of PET recyclates6 5 Quality assurance 7 Annex A (normative) Determination of size and distribution of PET-R flakes by sieving .8 Annex B (normative) Gravimetric method for the determination of residual humidity (water content) 11 Annex C (normative) Rapid

12、method for the determination of residual impurities . 13 Annex D (informative) Potentiometric method for the determination of the residual alkalinity. 15 Annex E (informative) Method for the determination of infusible impurities by filtration 17 Bibliography . 19 BS EN 15348:2014EN 15348:2014 (E) 3

13、Foreword This document (EN 15348:2014) has been prepared by Technical Committee CEN/TC 249 “Plastics”, the secretariat of which is held by NBN. 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

14、2015 and conflicting national standards shall be withdrawn at the latest by May 2015. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights.

15、This document supersedes EN 15348:2007. EN 15348:2014 includes the following significant technical changes with respect to EN 15348:2007: a) the deletion of former informative Annex B and replacement by a reference to EN ISO 1133-2 in Table 1; b) the use of a porcelain crucible instead of a crucible

16、 of platinum in B.5. This European Standard is one part of a series of CEN publications on Plastics Recycling which is structured as follows: EN 15342, Plastics Recycled Plastics Characterization of polystyrene (PS) recyclates EN 15343, Plastics Recycled Plastics Plastics recycling traceability and

17、assessment of conformity and recycled content EN 15344, Plastics Recycled Plastics Characterization of Polyethylene (PE) recyclates EN 15345, Plastics Recycled Plastics Characterization of Polypropylene (PP) recyclates EN 15346, Plastics Recycled plastics Characterization of poly(vinyl chloride) (PV

18、C) recyclates EN 15347, Plastics Recycled Plastics Characterization of plastics wastes EN 15348, Plastics Recycled plastics Characterization of poly(ethylene terephthalate) (PET) recyclates CEN/TR 15353, Plastics Recycled plastics Guidelines for the development of standards for recycled plastics Acc

19、ording to the CEN-CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, German

20、y, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. BS EN 15348:2014EN 15348:2014 (E) 4 Introduction Recycling of plastics waste is one type o

21、f material recovery process intended to save resources (virgin raw materials, water, and energy), while minimizing harmful emissions into air, water and soil as well as any impacts on human health. The environmental impact of recycling has to be assessed over the whole life cycle of the recycling sy

22、stem (from the waste generation point to the disposal of final residues). To ensure that recycling constitutes the best environmental option for treating the available waste, some prerequisites should preferably be met: recycling scheme being contemplated should generate lower environmental impacts

23、than alternative recovery options; existing or potential market outlets should be identified that will secure a sustainable industrial recycling operation; collection and sorting schemes should be properly designed to deliver recyclable plastics waste fractions fitting reasonably well with the avail

24、able recycling technologies and with the (changing) needs of the identified market outlets, preferably at minimum costs to society. This European Standard has been produced in accordance with the guidance produced by CEN on Environmental Aspects and in accordance with CEN/TR 15353. NOTE CEN/TR 15353

25、 considers the general environmental aspects which are specific to the recycling process. It is often impossible to trace back each individual product at the end user stage and to check whether the product has been used correctly through its life. Consequently products are out of industrial control

26、for a period of time. It is possible that during this period contamination with other materials might occur that could affect the products suitability for recycling into the intended application. BS EN 15348:2014EN 15348:2014 (E) 5 1 Scope This European Standard defines a method of specifying delive

27、ry conditions for poly(ethylene terephthalate) (PET) recyclates. It gives the most important characteristics and associated test methods for assessing PET recyclates intended to be used for the production of semi-finished/finished products. It is intended for use by the supplier and purchaser of suc

28、h materials, to assist them in agreeing on specifications. This European Standard is applicable without prejudice to any existing legislation. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. F

29、or dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. CEN/TR 15353, Plastics Recycled plastics Guidelines for the development of standards for recycled plastics EN ISO 472, Plastics Vocabulary (I

30、SO 472) EN ISO 1133-2, Plastics Determination of the melt mass-flow rate (MFR) and melt volume-flow rate (MVR) of thermoplastics Part 2: Method for materials sensitive to time-temperature history and/or moisture (ISO 1133-2) EN ISO 11664-4, Colorimetry Part 4: CIE 1976 L*a*b* Colour space (ISO 11664

31、-4) EN ISO 15512, Plastics Determination of water content (ISO 15512) ISO 565, Test sieves Metal wire cloth, perforated metal plate and electroformed sheet Nominal sizes of openings ISO 1628-5, Plastics Determination of the viscosity of polymers in dilute solution using capillary viscometers Part 5:

32、 Thermoplastic polyester (TP) homopolymers and copolymers ISO 3534-2, Statistics Vocabulary and symbols Part 2: Applied statistics 3 Terms and definitions For the purposes of this document, the terms and definitions given in EN ISO 472 and CEN/TR 15353 and the following apply. 3.1 sieve retention pe

33、rcentage-of the recycled test sample retained on a sieve at the end of the test Note 1 to entry: The sieve retention is expressed in percent (mass fraction). 3.2 container retention percentage of recycled matter retained in the container at the bottom of a stack of sieves, or under a single sieve, a

34、t the end of the test compared to the mass of the sample BS EN 15348:2014EN 15348:2014 (E) 6 3.3 average particulate dimension single value of size, representing the dominant particle size for the whole test sample 4 Characterization of PET recyclates A single batch is the quantity of recyclate that

35、 has homogenous characteristics within the specified tolerances. The characteristics of PET recyclates, which shall be met for every batch (see ISO 3534-2) of PET recyclate are shown in Table 1, and are divided into two types: required characteristics needed to characterize PET recyclates in general

36、 and required for all recyclates; optional characteristics needed to characterize PET recyclates according to customer specifications and applications. These characteristics shall be assessed by using the test methods given in Table 1 and detailed below. A Certificate of Analysis, providing the test

37、 results for each batch of recyclate shall be provided by the supplier to the purchaser upon request. The supplier shall provide the necessary information about the material composition of the recyclates, as specified by the purchaser or required by the applicable regulations. BS EN 15348:2014EN 153

38、48:2014 (E) 7 Table 1 Characterization of PET recyclates Characteristics Unit Test method Comments Required Shape Visual Flakes, pellets Maximum particle size mm Given by the size of the screen of the grinder Fine particle content % Annex A Value in percentage of the particles passing the sieve of 1

39、 mm. Colour Visual inspection Unicolour, tranparent, mixed Water content % Annex B or EN ISO 15512 PVC content mg/kg Annex C Polyolefin content mg/kg Annex C Optional Determination Melt Mass-Flow Rate (MFR) EN ISO 1133-2 Intrinsic viscosity (I.V.) dl/g ISO 1628-5 Alkalinity pH Annex D Filterability

40、MPa/(h cm)Annex E Other residual content mg/kg Analysis according to the appropriate method e.g. FTIR, XRF, DSC Colour L,a,b values Colourimeter according to EN ISO 11664-4 Injection molded disks from Flakes, pellets Other tests may be carried out by agreement between the purchaser and the supplier

41、and results reported. 5 Quality assurance In order that the purchaser of the recyclate can have confidence in the quality of the product, the supplier shall maintain records of the quality control carried out, including incoming materials, processes and finished products. NOTE A quality management s

42、ystem certified to EN ISO 9001 may be a suitable guarantee of consistent recyclate quality but not the recycled content. The specification and the standard deviation or range of values within and between batches of material shall be agreed between the supplier and the purchaser. Where a statement of

43、 recycled content, or the previous history of the material, is requested, documentary evidence shall be provided. These records should be available to the purchaser on request. Where a recyclate has been produced via a melt process, the supplier may choose to state the level of filtration applied du

44、ring that process. This will determine the maximum size of any non-melting contaminants present in the recyclate. The statement of filtration level shall include details of the filter. Recyclates that have not passed through a melt process cannot be quantified in the same way, and the supplier may s

45、tate this. BS EN 15348:2014EN 15348:2014 (E) 8 Annex A (normative) Determination of size and distribution of PET-R flakes by sieving A.1 General This procedure specifies a method for determining the dimensional distribution (size) of PET-R flakes by measuring the quantities retained in a range of si

46、eves having meshes of various sizes. The results are expressed in terms of quantity retained on the various sieves or as the mean particulate dimension for the whole sample tested (That which has the greatest frequency). A.2 Principles A determined sample is filtered through a single sieve, or stack

47、 of sieves of various mesh opening sizes, helped by mechanical or manual vibrations. When several sieves are selected to form a stack, the sieves are assembled in ascending order of the mesh opening sizes so that the largest mesh opening is at the top. A.3 Apparatus A.3.1 Weighing scale: With a prec

48、ision of 0,1 g. A.3.2 Sieve: The nominal diameter of 200 mm, in accordance with ISO 565 supplemented by a lid and by a receiving container. Sieves are made of ring wire. The sieves used have the following square mesh opening sizes of: 1 mm; 2 mm; 3,15 mm; 4 mm; 6,30 mm; 8 mm and 12,5 mm. A.3.3 Mecha

49、nical sieve shaker A.4 Procedure A.4.1 Examine the sieve, or the sieves, for the damage to the mesh or any deformation of the matrix of the meshes. Replace all defective meshes. A.4.2 Weigh the sieve, or each individual sieve, with a margin of 0,1 g. A.4.3 Weigh the container to the nearest 0,1 g. A.4.4 Assemble the sieve, or the sieves, and the container, one on top of the other. By assembling a stack of sieves, you ensure that they are gathered in the ascending order of