SIST EN ISO 7823-1:2001

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Kunststoffe - Tafeln aus Polymethylmethacrylat - Typen, Maße und Eigenschaften - Teil 1: Gegossene Tafeln (ISO 7823-1: 1998)Plastiques - Plaques en poly(méthacrylate de méthyle) - Types, dimensions et caractéristiques - Partie 1: Plaques coulées (ISO 7823-1:1998)Plastics - Poly(methyl methacrylate) sheets - Types, dimensions and characteristics - Part 1: Cast sheets (ISO 7823-1:1998)83.140.10Filmi in folijeFilms and sheetsICS:Ta slovenski standard je istoveten z:EN ISO 7823-1:2000SIST EN ISO 7823-1:2001en01-junij-2001SIST EN ISO 7823-1:2001SLOVENSKI
STANDARDSIST EN ISO 7823-1:20001DGRPHãþD



SIST EN ISO 7823-1:2001



SIST EN ISO 7823-1:2001



SIST EN ISO 7823-1:2001



SIST EN ISO 7823-1:2001



SIST EN ISO 7823-1:2001



AReference numberISO 7823-1:1998(E)INTERNATIONALSTANDARDISO7823-1Third edition1998-06-15Plastics — Poly(methyl methacrylate)sheets — Types, dimensions andcharacteristics —Part 1:Cast sheetsPlastiques — Plaques en poly(méthacrylate de méthyle) — Types,dimensions et caractéristiques —Partie 1: Plaques couléesSIST EN ISO 7823-1:2001



ISO 7823-1:1998(E)©
ISO 1998All rights reserved. Unless otherwise specified, no part of this publication may be reproducedor utilized in any form or by any means, electronic or mechanical, including photocopying andmicrofilm, without permission in writing from the publisher.International Organization for StandardizationCase postale 56 · CH-1211 Genève 20 · SwitzerlandInternetiso@iso.chPrinted in SwitzerlandiiContentsPage1Scope .12Normative references .13Definitions .24Composition .25General requirements .36Test methods .67Retest and rejection .7Annex A (normative) Determination of dimensional change (shrinkage) at elevated temperature .8SIST EN ISO 7823-1:2001



© ISOISO 7823-1:1998(E)iiiForewordISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISOmember bodies). The work of preparing International Standards is normally carried out through ISO technicalcommittees. Each member body interested in a subject for which a technical committee has been established has theright to be represented on that committee. International organizations, governmental and non-governmental, in liaisonwith ISO, also take part in the work.Draft 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.International Standard ISO 7823-1 was prepared by Technical Committee ISO/TC 61, Plastics, SubcommitteeSC 11, Products.This third edition cancels and replaces the second edition (ISO 7823-1:1991), 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: Melt-calendered extruded sheetsAnnex A forms an integral part of this part of ISO 7823.SIST EN ISO 7823-1:2001



SIST EN ISO 7823-1:2001



INTERNATIONAL STANDARD
© ISOISO 7823-1:1998(E)1Plastics — Poly(methyl methacrylate) sheets — Types, dimensionsand characteristics —Part 1:Cast sheets1
Scope1.1
This part of ISO 7823 specifies requirements for non-modified flat poly(methyl methacrylate) (PMMA) castsheets (plates and continuous) for general-purpose use. The sheets may be colourless or coloured, and may betransparent, translucent or opaque.1.2
The thickness range of the sheets covered by this part of ISO 7823 is 1,5 mm to 25 mm.2
Normative referencesThe following standards contain provisions which, through reference in this text, constitute provisions of this part ofISO 7823. At the time of publication, the editions indicated were valid. All standards are subject to revision, andparties to agreements based on this part of ISO 7823 are encouraged to investigate the possibility of applying themost recent editions of the standards indicated below. Members of IEC and ISO maintain registers of currently validInternational Standards.ISO 62:—1), Plastics — Determination of water absorption.ISO 75-1:1993, Plastics — Determination of temperature of deflection under load — Part 1: General test method.ISO 75-2:1993, Plastics — Determination of temperature of deflection under load — Part 2: Plastics and ebonite.ISO 178:1993, Plastics — Determination of flexural properties.ISO 179-1:— 2), Plastics — Determination of Charpy impact properties — Part 1: Non-instrumented impact test.ISO 291:1997, Plastics — Standard atmospheres for conditioning and testing.ISO 306:1994, Plastics — Thermoplastic materials — Determination of Vicat softening temperature (VST).ISO 489:— 3), Plastics — Determination of refractive index.ISO 527-1:1993, Plastics — Determination of tensile properties — Part 1: General principles.
1)
To be published. (Revision of ISO 62:1980)2)
To be published. (Revision of ISO 179:1993)3)
To be published. (Revision of ISO 489:1983)SIST EN ISO 7823-1:2001



ISO 7823-1:1998(E)© ISO2ISO 527-2:1993, Plastics — Determination of tensile properties — Part 2: Test conditions for moulding andextrusion plastics.ISO 877:1994, Plastics — Methods of exposure to direct weathering, to weathering using glass-filtered daylight, andto intensified weathering by daylight using Fresnel mirrors.ISO 1183:1987, Plastics — Methods for determining the density and relative density of non-cellular plastics.ISO 2039-2:1987, Plastics — Determination of hardness — Part 2: Rockwell hardness.ISO 2818:1994, Plastics — Preparation of test specimens by machining.ISO 2859-1:—4), Sampling procedures for inspection by attributes — Part 1: Sampling plans indexed by acceptablequality levels (AQL) for lot-by-lot inspection.ISO 4582:1998, Plastics — Determination of changes in colour and variations in properties after exposure todaylight under glass, natural weathering or laboratory light sources.ISO 4892-1:—5), Plastics — Methods of exposure to laboratory light sources — Part 1: General guidance.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-arclamps.ISO 11359-2:— 6), Plastics — Thermomechanical analysis (TMA) — Part 2: Determination of coefficient of linearthermal 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:— 6), Plastics — Determination of the total luminous transmittance of transparent materials — Part 2:Double-beam instrument.ISO 14782:— 6), Plastics — Determination of haze of transparent materials.3
DefinitionsFor the purposes of this part of ISO 7823, the following definitions apply.3.1
non-modified cast PMMA sheets: Sheets based on homopolymers of MMA, or copolymers of MMA withacrylic 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
Composition4.1
The amounts of plasticizing ingredients (materials that do not undergo chemical reaction to become a part ofthe polymer), other monomers and crosslinking agents (materials that produce the links between the chains ofpolymers) present shall be such that the basic properties are not changed from the values given in table 3. Theseamounts are in most cases less than a mass fraction of 3 %.
4)
To be published. (Revision of ISO 2859-1:1989)5)
To be published. (Revision of ISO 4892-1:1994)6)
To be published.SIST EN ISO 7823-1:2001



© ISOISO 7823-1:1998(E)34.2
Other additives, e.g. colourants, UV adsorbers and pigments, may be included to give specific properties.5
General requirements5.1
Protective coveringsUnless otherwise agreed upon by the interested parties, the surfaces of the sheet, as delivered, shall be protectedby suitable materials, for example kraft paper secured with a water-soluble or pressure-sensitive adhesive, or apolyethylene film, which are readily removable without causing surface contamination or damage.5.2
Appearance5.2.1
Surface defectsThe sheet shall have a smooth surface. There shall be no scratches, marks or other surface defects larger than3 mm2 each anywhere in the sheet.5.2.2
Inclusions defectsThere shall be no bubbles, inclusions, cracks or other defects that could adversely affect the performance of thesheet in its intended application which are larger than 3 mm2 each anywhere in the sheet.5.2.3
Classification of defectsThe area of any defect found in the sheet shall be classified as specified in table 1. Each defect shall be consideredseparately.Table 1 — Classification of defectsClassificationArea of surfacedefectArea of inclusiondefectNegligibleLess than 1 mm2Less than 1 mm2Acceptable1 mm2 to 3 mm21 mm2 to 3 mm25.2.4
Distribution of defects5.2.4.1
There shall not be
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