1、BRITISH STANDARDBS EN ISO 9988-1:2006Incorporating Amendment No. 1 (to renumber BS ISO 9988-1:2004 as BS EN ISO 9988-1:2006)Plastics Polyoxymethylene (POM) moulding and extrusion materials Part 1: Designation system and basis for specificationsThe European Standard EN ISO 9988-1:2006 has the status
2、of a British StandardICS 83.080.20g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58BS EN ISO 9988-1:2006This British Standard was published under the
3、 authority of the Standards Policy and Strategy Committee on 27 September 2004 BSI 2006ISBN 0 580 44488 0National forewordThis British Standard is the official English language version of EN ISO 9988-1:2006. It is identical with ISO 9988-1:2004. It supersedes BS ISO 9988-1:1998, which is withdrawn.T
4、he UK participation in its preparation was entrusted to Technical Committee PRI/82, Thermoplastic materials, which has the responsibility to:A list of organizations represented on this committee can be obtained on request to its secretary.Cross-referencesThe British Standards which implement interna
5、tional or European publications referred to in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards.This publication does not purport to inc
6、lude all the necessary provisions of a contract. Users are responsible for its correct application.Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible international/European committee any enqui
7、ries on the interpretation, or proposals for change, and keep UK interests informed; monitor related international and European developments and promulgate them in the UK.Summary of pagesThis document comprises a front cover, an inside front cover, the EN title page, the EN foreword, the ISO title p
8、age, pages ii and iii, a blank page, pages 1 to 6, an inside back cover and a back cover.The BSI copyright date displayed in this document indicates when the document was last issued.Amendments issued since publicationAmd. No. Date Comments16449 31 July 2006 Renumbers BS ISO 9988-1:2004 as BS EN ISO
9、 9988-1:2006EUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN ISO 9988-1April 2006ICS 83.080.20English VersionPlastics - Polyoxymethylene (POM) moulding and extrusionmaterials - Part 1: Designation system and basis forspecifications (ISO 9988-1:2004)Plastiques - Matriaux base de polyoxymthylne (POM)
10、pour moulage et extrusion - Partie 1: Systme dedsignation et base de spcification (ISO 9988-1:2004)Kunststoffe - Polyoxymethylen (POM)-Formmassen - Teil1: Bezeichnungssystem und Basis fr Spezifikationen (ISO9988-1:2004)This European Standard was approved by CEN on 16 March 2006.CEN members are bound
11、 to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the Centr
12、al Secretariat or to any CEN member.This European Standard exists in three official versions (English, French, German). A version in any other language made by translationunder the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the
13、 officialversions.CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania,Slovakia, Slovenia, S
14、pain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGManagement Centre: rue de Stassart, 36 B-1050 Brussels 2006 CEN All rights of exploitation in any form and by any means reservedworldwide for CEN national Me
15、mbers.Ref. No. EN ISO 9988-1:2006: EForeword The text of ISO 9988-1:2004 has been prepared by Technical Committee ISO/TC 61 “Plastics” of the International Organization for Standardization (ISO) and has been taken over as EN ISO 9988-1:2006 by Technical Committee CEN/TC 249 “Plastics“, the secretari
16、at of which is held by IBN. 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 October 2006, and conflicting national standards shall be withdrawn at the latest by October 2006. According to the CEN/
17、CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg,
18、Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. Endorsement notice The text of ISO 9988-1:2004 has been approved by CEN as EN ISO 9988-1:2006 without any modifications. EN ISO 9988-1:2006INTERNATIONALTSDNAARDISO1-8899hTdri deo
19、itin24000-90-1Reference numberISO 9988-1:2004(E)Plastics Polyoxymethylene (POM) moulding and extrusion materials Part 1:Designation system and basis for specificationsPlastiques Matriaux base de polyoxymthylne (POM) pour moulage et extrusion Partie 1: Systme de dsignation et base de spcificationINTE
20、RNATIONALSTANDARDISO9988-1Third edition2004-09-01Refecnern eumrebOSI 8991-8:002)E(4 OSI 2004Plasscit Polyomyxhteyenel )MOP( uomlnidg nae dxtroisum naslairet aPrt 1:ngiseDoitan syssisab dna met for oitacificepssnlPsauqitse M atriua x sabe p edoyloxymhtyl( enPOM) uopr uomlgate e exrtusion Partie 1: yS
21、stmed e sditangnoi te sabd ee scpficiitaonEN ISO 9988-1:2006ii id FDPscalimerThFDP si fam eliy ctnome niat deddebyepfa.sec In cacnadrociw eth sebodA sneciliycilop gn, thf siam elirp eb ytnide or viewb detu llahston tide ebed lnuet sst ehyfepcaa hcihw serdebme et desnecil era dedo tsni dnat no dellah
22、pmoc eturep reformign ttide ehign. Inodt gnidaolnwhsi liferap ,ticca setpe trehnie snopser ehtibtiliy fo not fnirA gnigniycilop gnisnecil sebod. Teh SItneC Olar Seerctraiatcatpecs ibail ontily t nih.aera siAebod t a sirramedak fo AsyS ebodtmeI snocrropta.deteDalis fo tfos ehtwcudorp erats t desuo ta
23、erct ehsi FDP fb nac elie ft ni dnuoG ehreneI lanfo relative to tf eh;eli tP ehDF-rctaenoitemaraptpo erew sremizif deorp rinti.gn Evrey t neeb sah eracakt neo rusnee ttah tf ehtius si elibaf elosu re by ISO memdob rebsei. In ehtkilnuyle evtne ttah a borplem retalit gno it si f,dnuo esaelp inform tht
24、neC eral ceSrteraiat ta teh sserdda vigoleb new.iiiForewordISO (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 ISOtechnical committees. Each m
25、ember body interested in a subject for which a technical committee has beenestablished has the right to be represented on that committee. International organizations, governmental andnon-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the InternationalEle
26、ctrotechnical Commission (IEC) on all matters of electrotechnical standardization.International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.The main task of technical committees is to prepare International Standards. Draft International Standardsadopted
27、 by the technical committees are circulated to the member bodies for voting. Publication as anInternational Standard requires approval by at least 75 % of the member bodies casting a vote.Attention is drawn to the possibility that some of the elements of this document may be the subject of patentrig
28、hts. ISO shall not be held responsible for identifying any or all such patent rights.ISO 9988-1 was prepared by Technical Committee ISO/TC 61, Plastics, Subcommittee SC 9, Thermoplasticmaterials.This third edition cancels and replaces the second edition (ISO 9988-1:1998), of which it constitutes a m
29、inorrevision in which the main changes are the deletion of the years of publication of the normative references inClause 2 and the updating of the number of the ASTM standard used in the second example in Clause 4.ISO 9988 consists of the following parts, under the general title Plastics Polyoxymeth
30、ylene (POM) mouldingand extrusion materials: Part 1: Designation system and basis for specifications Part 2: Preparation of test specimens and determination of propertiesEN ISO 9988-1:2006blankANRETNIITOTS LANDNADRA1Plastics Polyoxymethylene (POM) moulding and extrusion materials Part 1:Designation
31、system and basis for specifications1Scope1.1 This part of ISO 9988 establishes a system of designation for polyoxymethylene (POM) thermoplasticmaterials, which may be used as the basis for specifications.Polyoxymethylene materials are thermoplastic materials composed principally of long-chain synthe
32、tichomopolymers and copolymers of formaldehyde. The repeating unit in the molecular chain is CH2O as anintegral part of the main polymer chain resulting from polymerization of formaldehyde.1.2 The types of polyoxymethylene plastic are differentiated from each other by a classification system basedon
33、 appropriate levels of the following designatory properties:a) melt mass-flow rate or melt volume-flow rate,b) tensile modulus,and on information about basic polymer parameters, intended application, method of processing, importantproperties, additives, colorants, fillers and reinforcing materials.1
34、.3 This part of ISO 9988 is applicable to all polyoxymethylene homopolymers and to copolymers ofpolyoxymethylene and blends of polymers containing polyoxymethylene.It applies to materials ready for normal use in the form of powder, granules or pellets and to materialsunmodified and modified by color
35、ants, additives, fillers, etc.1.4 It is not intended to imply that materials having the same designation necessarily give the sameperformance. This part of ISO 9988 does not provide engineering data, performance data or data on processingconditions which may be required to specify materials for part
36、icular end-use applications.If such additional properties are required, they shall be determined in accordance with the test methodsspecified in part 2 of this International Standard.1.5 In order to specify a thermoplastic material for a particular application or to ensure reproducibleprocessing, ad
37、ditional requirements may be given in data block 5 (see 3.1).EN ISO 9988-1:20062 2 Normative referencesThe following referenced documents are indispensable for the application of this document. For datedreferences, only the edition cited applies. For undated references, the latest edition of the ref
38、erenced document(including any amendments) applies.ISO 1043-1, Plastics Symbols and abbreviated terms Part 1: Basic polymers and their specialcharacteristicsISO 9988-2, Plastics Polyoxymethylene (POM) moulding and extrusion materials Part 2: Preparation oftest specimens and determination of properti
39、es3 Designation and specification system3.1 GeneralThe designation and specification system for thermoplastics is based on the following standardized pattern:The designation consists of an optional description block, reading “Thermoplastics”, and an identity blockcomprising the International Standar
40、d number and an individual-item block. For unambiguous designation, theindividual-item block is subdivided into five data blocks comprising the following information: Data block 1: Identification of the plastic by its symbol POM in accordance with ISO 1043-1 andinformation about the polymerization p
41、rocess or composition of the polymer (see 3.2). Data block 2: Position 1: Intended application or method of processing (see 3.3). Positions 2 to 8: Important properties, additives and supplementary information (see 3.3). Data block 3: Designatory properties (see 3.4). Data block 4: Fillers or reinfo
42、rcing materials and their nominal content (see 3.5). Data block 5: For the purpose of specifications, a fifth data block may be added containing additionalinformation (see 3.6).The first character of the individual-item block shall be a hyphen. The data blocks shall be separated from eachother by co
43、mmas.If a data block is not used, this shall be indicated by doubling the separation sign, i.e. by two commas (,).3.2 Data block 1In this data block, after the hyphen, polyoxymethylene plastics are identified by the symbol “POM” inaccordance with ISO 1043-1, followed by a hyphen and the code-letter
44、H for homopolymers or K forcopolymers.DesignationDescription block (optional)Identity blockInternational Standard number blockIndividual-item blockData block Data block Data block Data block Data block12345EN ISO 9988-1:200633.3 Data block 2In this data block, information about intended application
45、and/or method of processing is given in position 1 andinformation about important properties, additives and colour in positions 2 to 8. The code-letters used arespecified in Table 1.If information is presented in positions 2 to 8 and no specific information is given in position 1, the letter X shall
46、be inserted in position 1.3.4 Data block 33.4.1 GeneralIn this data block, the melt mass-flow rate or melt volume-flow rate is represented by a one-figure code-number(see 3.4.2) and the tensile modulus by a one-figure code-number (see 3.4.3). The two code-numbers areseparated from each other by a hy
47、phen.If a property value falls on or near a range limit, the manufacturer shall state which range will designate thematerial. If subsequent individual test values lie on, or either side of, the range limit because of manufacturingtolerances, the designation is not affected.NOTE Not all combinations
48、of the values of the designatory properties are provided by currently available materials.Table 1 Code-letters used in data block 2Code-letter Position 1 Code-letter Positions 2 to 8A Processing stabilizedB Blow mouldingC ColouredD PowderE ExtrusionF Extrusion of filmsG General use G GranulesH Coati
49、ng H Heat-ageing stabilizedL Monofilament extrusion L Light or weather stabilizedM MouldingN Natural (no colour added)P Impact modifiedR Rotational moulding R Mould release agentS Sintering S2 Improved wear and/or frictional propertiesX No indication W Stabilized against hydrolysisY Textile yarns, spinning Y Increased electrical conductivityZ AntistaticNOTE Code-letter S2, for this document “improved” wear and/or frictional properties, means reduced wear and lowered coefficient offriction in applications requirin
