1、BRITISH STANDARD BS EN ISO 7823-1:2003 Incorporating Corrigendum No. 1 Plastics Poly(methyl methacrylate) sheets Types, dimensions and characteristics Part 1: Cast sheets The European Standard EN ISO 7823-1:2003 has the status of a British Standard ICS 83.140.10 BS EN ISO 7823-1:2003 This British St
2、andard was published under the authority of the Standards Policy and Strategy Committee on 19 June 2003 BSI 23 October 2003 ISBN 0 580 42069 8 National foreword This British Standard is the official English language version of EN ISO 7823-1:2003. It is identical with ISO 7823-1:2003. It supersedes B
3、S EN ISO 7823-1:2000 which is withdrawn. The UK participation in its preparation was entrusted to Technical Committee PRI/75, Rubber and plastic films and sheets, which has the responsibility to: A list of organizations represented on this committee can be obtained on request to its secretary. Cross
4、-references The British Standards which implement international 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 B
5、ritish Standards Online. This publication does not purport to include 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; pre
6、sent to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. Summary of pages This document comprises a front cover, an
7、 inside front cover, the EN ISO title page, the EN ISO foreword page, the ISO title page, pages ii to iv, pages 1 to 9, two Annex ZA pages and a back cover. The BSI copyright date displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. Dat
8、e Comments 14787 Corrigendum No. 1 23 October 2003 Incorporating corrected EN ISO foreword page and adding Annex ZA pagesEUROPEANSTANDARD NORMEEUROPENNE EUROPISCHENORM ENISO78231 June2003 ICS83.140.10 SupersedesENISO78231:2000 Englishversion PlasticsPoly(methylmethacrylate)sheetsTypes,dimensions and
9、characteristicsPart1:Castsheets(ISO78231:2003) PlastiquesPlaquesenpoly(mthacrylatedemthyle) Types,dimensionsetcaractristiquesPartie1:Plaques coules(ISO78231:2003) KunststoffeTafelnausPolymethylmethacrylatTypen, MaeundEigenschaftenTeil1:GegosseneTafeln(ISO 78231:2003) ThisEuropeanStandardwasapprovedb
10、yCENon23May2003. CENmembersareboundtocomplywiththeCEN/CENELECInternalRegulationswhichstipulatetheconditionsforgivingthisEurope an Standardthestatusofanationalstandardwithoutanyalteration.Uptodatelistsandbibliographicalreferencesconcernings uchnational standardsmaybeobtainedonapplicationtotheManageme
11、ntCentreortoanyCENmember. ThisEuropeanStandardexistsinthreeofficialversions(English,French,German).Aversioninanyotherlanguagemadebytra nslation undertheresponsibilityofaCENmemberintoitsownlanguageandnotifiedtotheManagementCentrehasthesamestatusasthe official versions. CENmembersarethenationalstandar
12、dsbodiesofAustria,Belgium,CzechRepublic,Denmark,Finland,France,Germany,Greece, Hungary,Iceland,Ireland,Italy,Luxembourg,Malta,Netherlands,Norway,Portugal,Slovakia,Spain,Sweden,SwitzerlandandUn ited Kingdom. EUROPEANCOMMITTEEFORSTANDARDIZATION COMITEUROPENDENORMALISATION EUROPISCHESKOMITEEFRNORMUNG M
13、anagementCentre:ruedeStassart,36B1050Brussels 2003CEN Allrightsofexploitationinanyformandbyanymeansreserved worldwideforCENnationalMembers. Ref.No.ENISO78231:2003EINESO8732:12(300E) 2 CORRECTED20030924 Foreword Thisdocument(ENISO78231:2003)hasbeenpreparedbyTechnicalCommitteeISO/TC61 “Plastics“incoll
14、aborationwithTechnicalCommitteeCEN/TC249“Plastics“,thesecretariatof whichisheldbyIBN. ThisEuropeanStandardshallbegiventhestatusofanationalstandard,eitherbypublicationof anidenticaltextorbyendorsement,atthelatestbyDecember2003,andconflictingnational standardsshallbewithdrawnatthelatestbyDecember2003.
15、 ThisdocumentsupersedesENISO78231:2000. AccordingtotheCEN/CENELECInternalRegulations,thenationalstandardsorganizationsof thefollowingcountriesareboundtoimplementthisEuropeanStandard:Austria,Belgium,Czech Republic,Denmark,Finland,France,Germany,Greece,Hungary,Iceland,Ireland,Italy, Luxembourg,Malta,N
16、etherlands,Norway,Portugal,Slovakia,Spain,Sweden,Switzerlandand theUnitedKingdom. Endorsementnotice ThetextofISO78231:2003hasbeenapprovedbyCENasENISO78231:2003wit houtany modifications. NOTENormativereferencestoInternationalStandardsarelistedinAnnexZA(normative). ENISO78231:2003 Reference number ISO
17、 7823-1:2003(E)INTERNATIONAL ADNATSDR ISO 7-3281 tide htruoFino -300210-60 Plastics Poly(methyl methacrylate) sheets Types, dimensions and characteristics Part 1: Cast sheets Plastiques Plaques en poly(mthacrylate de mthyle) Types, dimensions et caractristiques Partie 1: Plaques coules Referecne unb
18、mer OSI 1-3287:002)E(3 OSI 3002INTERNATIONAL STANDARD ISO 7823-1 Fourth edition 2003-06-01 scitsalP loPytem(hyl temhcaryal)et steehs Types,emid isna snon d iretcarahcs scit Pa :1 tr s tsaCh stee salPtiuqse P luqase p neoyl(mtcahrytm ed etalhyl)e Types , midesnoisn te caractrsiqitseu Partie 1:P lqaue
19、sc oulse ENISO78231:2003IS-3287 O1:(3002E) ii ENISO78231:2003IS-3287 O1:(3002E) iiiContents Page Foreword iv 1 Scope 1 2 Normative references . 1 3 Terms and definitions. 2 4 Composition 3 5 General requirements . 3 6 Test methods. 5 7 Retest and rejection 7 Annex A (normative) Determination of dime
20、nsional change on heating (shrinkage). 8 ENISO78231:2003IS-3287 O1:(3002E) iv 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 IS
21、O technical committees. 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 c
22、losely with the International Electrotechnical 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. D
23、raft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International 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 do
24、cument may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO 7823-1 was prepared by Technical Committee ISO/TC 61, Plastics, Subcommittee SC 11, Products. This fourth edition cancels and replaces the third edition (ISO 7823-1:1998),
25、 which has been technically revised. ISO 7823 consists of the following parts, under the general title Plastics Poly(methyl methacrylate) sheets Types, dimensions and characteristics: Part 1: Cast sheets Part 2: Extruded sheets Part 3: Continuous cast sheets ENISO78231:2003INTENRATIONAL TSANDADR IS-
26、3287 O1:(3002E)1Plastics Poly(methyl methacrylate) sheets Types, dimensions and characteristics Part 1: Cast sheets 1 Scope This part of ISO 7823 specifies requirements for non-modified flat poly(methyl methacrylate) (PMMA) cast sheets (plates) for general-purpose use. The sheets may be colourless o
27、r coloured, and may be transparent, translucent or opaque. The thickness range of the sheets covered by this part of ISO 7823 is 1,5 mm to 25 mm. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition c
28、ited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 62:1999, Plastics Determination of water absorption ISO 75-1: 1) , Plastics Determination of temperature of deflection under load Part 1: General test method ISO 75-2: 2) , Pla
29、stics Determination of temperature of deflection under load Part 2: Plastics, ebonite and long-fibre-reinforced composites ISO 178:2001, Plastics Determination of flexural properties ISO 179-1:2000, Plastics Determination of Charpy impact properties Part 1: Non-instrumented impact test ISO 291:1997,
30、 Plastics Standard atmospheres for conditioning and testing ISO 306: 3) , Plastics Thermoplastic materials Determination of Vicat softening temperature (VST) ISO 489:1999, Plastics Determination of refractive index ISO 527-1:1993, Plastics Determination of tensile properties Part 1: General principl
31、es 1) To be published. (Revision of ISO 75-1:1993) 2) To be published. (Revision of ISO 75-2:1993) 3) To be published. (Revision of ISO 306:1994) ENISO78231:2003IS-3287 O1:(3002E) 2 ISO 527-2:1993, Plastics Determination of tensile properties Part 2: Test conditions for moulding and extrusion plasti
32、cs ISO 877:1994, Plastics Methods of exposure to direct weathering, to weathering using glass-filtered daylight, and to intensified weathering by daylight using Fresnel mirrors ISO 1183-1: 4) , Plastics Methods for determining the density of non-cellular plastics Part 1: Immersion method, liquid pyk
33、nometer method and titration method ISO 1183-2: 4) , Plastics Methods for determining the density of non-cellular plastics Part 2: Density gradient column method ISO 2039-2:1987, Plastics Determination of hardness Part 2: Rockwell hardness ISO 2818:1994, Plastics Preparation of test specimens by mac
34、hining ISO 2859-1:1999, Sampling procedures for inspection by attributes Part 1: Sampling schemes indexed by acceptance quality limit (AQL) for lot-by-lot inspection ISO 4582:1998, Plastics Determination of changes in colour and variations in properties after exposure to daylight under glass, natura
35、l weathering or laboratory light sources ISO 4892-2:1994, Plastics Methods of exposure to laboratory light sources Part 2: Xenon-arc sources ISO 4892-4:1994, Plastics Methods of exposure to laboratory light sources Part 4: Open-flame carbon- arc lamps ISO 11359-2:1999, Plastics Thermomechanical anal
36、ysis (TMA) Part 2: Determination of coefficient of linear thermal expansion and glass transition temperature ISO 13468-1:1996, Plastics Determination of the total luminous transmittance of transparent materials Part 1: Single-beam instrument ISO 13468-2:1999, Plastics Determination of the total lumi
37、nous transmittance of transparent materials Part 2: Double-beam instrument ISO 14782:1999, Plastics Determination of haze for transparent materials 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 non-modified cast PMMA sheets sheets based on
38、homopolymers of MMA, or copolymers of MMA with acrylic or methacrylic monomers, produced by bulk polymerization in the presence of suitable initiators 3.2 flat PMMA sheets sheets with two plane, substantially parallel surfaces 4) To be published. (Revision in parts of ISO 1183:1987) ENISO78231:2003I
39、S-3287 O1:(3002E) 34 Composition The amounts of plasticizing ingredients (materials that do not undergo chemical reaction to become a part of the polymer), other monomers and crosslinking agents (materials that produce the links between the chains of polymers) present shall be such that the basic pr
40、operties are not changed from the values given in Table 3. These amounts are in most cases less than a mass fraction of 3 %. Other additives, e.g. colorants, UV adsorbers and pigments, may be included to give specific properties. National environmental legislation and regulations shall be followed r
41、egarding additives. 5 General requirements 5.1 Protective coverings Unless otherwise agreed upon by the interested parties, the surfaces of the sheet, as delivered, shall be protected by suitable materials, for example kraft paper secured with a water-soluble or pressure-sensitive adhesive, or a pol
42、yethylene film, which are readily removable without causing surface contamination or damage. 5.2 Appearance 5.2.1 Surface defects The sheet shall have a smooth surface. There shall be no scratches, marks or other surface defects larger than 3 mm 2each anywhere in the sheet. 5.2.2 Inclusion defects T
43、here shall be no bubbles, inclusions, cracks or other defects that could adversely affect the performance of the sheet in its intended application which are larger than 3 mm 2each anywhere in the sheet. 5.2.3 Classification of defects The area of any defect found in the sheets shall be classified as
44、 specified in Table 1. Each defect shall be considered separately. Table 1 Classification of defects Classification Area of surface defect Area of inclusion defect Negligible Less than 1 mm 2Less than 1 mm 2Acceptable 1 mm 2to 3 mm 21 mm 2to 3 mm 25.2.4 Distribution of defects 5.2.4.1 There shall no
45、t be a significant number (for the application) of small defects, each of which is defined as negligible in Table 1, within 1 m 2anywhere in the sheet. What constitutes a significant number shall be agreed between the interested parties. 5.2.4.2 No defect defined as acceptable in Table 1 shall be wi
46、thin 500 mm of another acceptable defect anywhere in or on the sheet. ENISO78231:2003IS-3287 O1:(3002E) 4 5.3 Colour The colour distribution shall be homogeneous, unless otherwise specified. Variations in colour shall be agreed upon between the interested parties. 5.4 Dimensions 5.4.1 Length and wid
47、th The length and width of the sheet shall be agreed upon between the interested parties. For cut sheets, the tolerances for each sheet shall be as specified in Table 2. Table 2 Tolerances on length and width of cut sheets Length or width mm Tolerance mm Up to 1 000 3 0 +From 1 001 to 2 000 6 0 +From 2 001 to 3 000 9 0 +3 001 and over 0,3 % 0 +5.4.2 Thickness The thickness tolerance for sheets in the range from 1,5 mm to 25 mm and up to 6 m 2in area shall be (0,4 mm + 0,1h), where h is the nominal sheet thickness in millimetres. The tolerance
