1、August 2007DEUTSCHE NORM English price group 10No part of this standard may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).ICS 83.140.10!,zns“9877580w
2、ww.din.deDDIN EN ISO 7823-3Plastics Poly(methyl methacrylate) sheets Types, dimensions and characteristics Part 3: Continuous cast sheets(ISO 7823-3:2007)English version of DIN EN ISO 7823-3:2007-08Kunststoffe Tafeln aus Polymethylmethacrylat Typen, Mae und Eigenschaften Teil 3: Endlosprodukte (ISO
3、7823-3:2007)Englische Fassung DIN EN ISO 7823-3:2007-08SupersedesDIN EN ISO 7823-3:2004-10www.beuth.deDocument comprises 16 pages10.07DIN EN ISO 7823-3:2007-08 2 National foreword This standard has been prepared by Technical Committee ISO/TC 61 “Plastics” in collaboration with Technical Committee CE
4、N/TC 249 “Plastics”, the secretariat of which is held by NBN (Belgium). The responsible German body involved in its preparation was the Normenausschuss Kunststoffe (Plastics Standards Committee), Technical Committee NA 054-04-02 AA Halbzeuge aus Thermoplasten. EN ISO 7823 consists of the following p
5、arts, under the general title “Plastics Poly(methyl metacrylate) sheets Types, dimensions and characteristics”: Part 1: Cast sheets Part 2: Extruded sheets Part 3: Continuous cast sheets The DIN Standards corresponding to the International Standards referred to in clause 2 of the EN are as follows:
6、ISO 62 DIN EN ISO 62 ISO 75-1 DIN EN ISO 75-1 ISO 75-2 DIN EN ISO 75-2 ISO 178 DIN EN ISO 178 ISO 179-1 DIN EN ISO 179-1 ISO 291 EN ISO 291 ISO 306 DIN EN ISO 306 ISO 489 DIN EN ISO 489 ISO 527-1 DIN EN ISO 527-1 ISO 527-2 DIN EN ISO 527-2 ISO 877 DIN EN ISO 877 ISO 1183-1 DIN EN ISO 1183-1 ISO 1183
7、-2 DIN EN ISO 1183-2 ISO 2039-2 DIN EN ISO 2039-2 ISO 2818 DIN EN ISO 2818 ISO 2859-1 DIN ISO 2859-1 ISO 4892-2 DIN EN ISO 4892-2 ISO 13468-1 DIN EN ISO 13468-1 ISO 13468-2 DIN EN ISO 13468-2 ISO 14782 DIN EN 2155-9 DIN EN ISO 7823-3:2007-08 3 Amendments This standard differs from DIN EN ISO 7823-3:
8、2004-10 as follows: a) Table 3 “Basic properties of PMMA continuous cast sheets Required values” has been revised (e.g. tensile strength, tensile strain). b) Table 4 “Other properties of PMMA continuous cast sheets Typical values” has been revised (e.g. Rockwell hardness, temperature of deflection u
9、nder load). c) The normative references have been updated. Previous editions DIN EN ISO 7823-3: 2004-10 National Annex NA (informative) Bibliography DIN EN 2155-9, Aerospace series Test methods for transparent materials for aircraft glazing Part 9: Determination of haze DIN EN ISO 62, Plastics Deter
10、mination of water absorption DIN EN ISO 75-1, Plastics Determination of temperature of deflection under load Part 1: General test method DIN EN ISO 75-2, Plastics Determination of temperature of deflection under load Part 2: Plastics and ebonite DIN EN ISO 178, Plastics Determination of flexural pro
11、perties DIN EN ISO 179-1, Plastics Determination of Charpy impact properties Part 1: Non-instrumented impact test DIN EN ISO 291, Plastics Standard atmospheres for conditioning and testing DIN EN ISO 306, Plastics Thermoplastic materials Determination of Vicat softening temperature (VST) DIN EN ISO
12、489, Plastics Determination of the refractive index DIN EN ISO 527-1, Plastics Determination of tensile properties Part 1: General principles DIN EN ISO 527-2, Plastics Determination of tensile properties Part 2: Test conditions for moulding and extrusion plastics DIN EN ISO 877, Plastics Methods of
13、 exposure to direct weathering, to weathering using glass-filtered daylight and to intensified weathering by daylight using Fresnel mirrors DIN EN ISO 7823-3:2007-08 4 DIN EN ISO 1183-1, Plastics Methods for determining the density of non-cellular plastics Part 1: Immersion method, liquid pyknometer
14、 method and titration method DIN ISO 1183-2, Plastics Methods for determining the density of non-cellular plastics Part 2: Density gradient column method DIN EN ISO 2039-2, Plastics Determination of hardness Part 2: Rockwell hardness DIN EN ISO 2818, Plastics Preparation of test specimens by machini
15、ng DIN EN ISO 4892-2, Plastics Methods of exposure to laboratory light sources Part 2: Xenon-arc lamps DIN EN ISO 13468-1, Plastics Determination of the total luminous transmittance of transparent materials Part 1: Single-beam instrument DIN EN ISO 13468-2, Plastics Determination of the total lumino
16、us transmittance of transparent materials Part 2: Double-beam instrument DIN ISO 2859-1, Sampling procedures for inspection by attributes Part 1: Sampling schemes indexed by acceptance quality limit (AQL) for lot-by-lot inspection EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 7823-3 May 2
17、007 ICS 83.140.10 Supersedes EN ISO 7823-3:2004 English Version Plastics - Poly(methyl methacrylate) sheets - Types, dimensions and characteristics - Part 3: Continuous cast sheets (ISO 7823-3:2007) Plastiques - Plaques en poly(mthacrylate de mthyle) - Types, dimensions et caractristiques - Partie 3
18、: Plaques coules continues (ISO 7823-3:2007) Kunststoffe - Tafeln aus Polymethylmethacrylat - Typen, Mae und Eigenschaften - Teil 3: Endlosprodukte (ISO 7823-3:2007) This European Standard was approved by CEN on 23 April 2007. CEN members are bound to comply with the CEN/CENELEC Internal Regulations
19、 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 standards may be obtained on application to the CEN Management Centre or to any CEN member. This Europe
20、an 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 notified to the CEN Management Centre has the same status as the official versions. CEN members are the nati
21、onal standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and
22、United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNG Management Centre: rue de Stassart, 36 B-1050 Brussels 2007 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 782
23、3-3:2007: EEN ISO 7823-3:2007 (E) 2 Contents Page Foreword3 1 Scope 4 2 Normative references 4 3 Terms and definitions .5 4 Composition.5 5 General requirements5 6 Test methods9 7 Retest and rejection 10 Annex A (normative) Determination of dimensional change on heating (shrinkage)11 EN ISO 7823-3:2
24、007 (E) 3 Foreword This document (EN ISO 7823-3:2007) has been prepared by Technical Committee ISO/TC 61 “Plastics” in collaboration with 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, eithe
25、r by publication of an identical text or by endorsement, at the latest by November 2007, and conflicting national standards shall be withdrawn at the latest by November 2007. This document supersedes EN ISO 7823-3:2004. According to the CEN/CENELEC Internal Regulations, the national standards organi
26、zations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Rom
27、ania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. Endorsement notice The text of ISO 7823-3:2007 has been approved by CEN as EN ISO 7823-3:2007 without any modifications. EN ISO 7823-3:2007 (E) 4 1 Scope This part of ISO 7823 specifies requirements for non-modified flat poly(m
28、ethyl methacrylate) (PMMA) continuous cast sheets for general-purpose use. The sheets may be colourless or coloured, and may be transparent, translucent or opaque. The thickness range of the sheets covered by this part of ISO 7823 is 1 mm to 10 mm. 2 Normative references The following referenced doc
29、uments are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 62:1999, Plastics Determination of water absorption ISO 75-2:2004, Plasti
30、cs Determination of temperature of deflection under load Part 2: Plastics and ebonite ISO 178, Plastics Determination of flexural properties ISO 179-1, Plastics Determination of Charpy impact properties Part 1: Non-instrumented impact test ISO 291, Plastics Standard atmospheres for conditioning and
31、testing ISO 306:2004, Plastics Thermoplastics materials Determination of Vicat softening temperature (VST) ISO 489:1999, Plastics Determination of refractive index ISO 527-2, Plastics Determination of tensile properties Part 2: Test conditions for moulding and extrusion plastics ISO 877, Plastics Me
32、thods of exposure to direct weathering, to weathering using glass-filtered daylight, and to intensified weathering by daylight using Fresnel mirrors ISO 1183-1:2004, Plastics Methods for determining the density of non-cellular plastics Part 1: Immersion method, liquid pyknometer method and titration
33、 method ISO 1183-2, Plastics Methods for determining the density of non-cellular plastics Part 2: Density gradient column method ISO 2039-2, Plastics Determination of hardness Part 2: Rockwell hardness EN ISO 7823-3:2007 (E) 5 ISO 2818, Plastics Preparation of test specimens by machining ISO 2859-1,
34、 Sampling procedures for inspection by attributes Part 1: Sampling schemes indexed by acceptance quality limit (AQL) for lot-by-lot inspection ISO 4582, Plastics Determination of changes in colour and variations in properties after exposure to daylight under glass, natural weathering or laboratory l
35、ight sources ISO 4892-2:2006, Plastics Methods of exposure to laboratory light sources Part 2: Xenon-arc lamps ISO 4892-4, Plastics Methods of exposure to laboratory light sources Part 4: Open-flame carbon-arc lamps ISO 11359-2, Plastics Thermomechanical analysis (TMA) Part 2: Determination of coeff
36、icient of linear thermal expansion and glass transition temperature ISO 13468-1, Plastics Determination of the total luminous transmittance of transparent materials Part 1: Single-beam instrument ISO 13468-2, Plastics Determination of the total luminous transmittance of transparent materials Part 2:
37、 Double-beam instrument ISO 14782, 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 homopolymers of MMA, or copolymers of MMA with acrylic o
38、r 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 Composition The amounts of plasticizing ingredients (materials that do not undergo chemical reaction to become a part of the po
39、lymer), other monomers and crosslinking agents (materials that produce the links between the chains of polymers) present shall be such that the basic properties are not changed from the values given in Table 3. These amounts are in most cases less than a mass fraction of 5 %. Other additives, e.g. c
40、olorants, UV absorbers and pigments, may be included to give specific properties. National environmental legislation and regulations shall be followed regarding additives. 5 General requirements 5.1 Protective coverings Unless otherwise agreed upon by the interested parties, the surfaces of the shee
41、t, as delivered, shall be protected by suitable materials, for example kraft paper secured with a water-soluble or pressure-sensitive adhesive, or a polyethylene film, which are readily removable without causing surface contamination or damage. EN ISO 7823-3:2007 (E) 6 5.2 Appearance 5.2.1 Surface d
42、efects The sheet shall have a smooth surface. There shall be no scratches, marks or other surface defects larger than 3 mm2each anywhere in the sheet. 5.2.2 Inclusion defects There shall be no bubbles, inclusions, cracks or other defects that could adversely affect the performance of the sheet in it
43、s intended application which are larger than 3 mm2each anywhere in the sheet. 5.2.3 Classification of defects The area of any defect found in the sheets shall be classified as specified in Table 1. Each defect shall be considered separately. Table 1 Classification of defects Classification Area of s
44、urface defect Area of inclusion defect Negligible Less than 1 mm2Less than 1 mm2Acceptable 1 mm2to 3 mm21 mm2to 3 mm25.2.4 Distribution of defects 5.2.4.1 There shall not be a significant number (for the application) of small defects, each of which is defined as negligible in Table 1, within 1 m2any
45、where 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 within 500 mm of another acceptable defect anywhere in or on the sheet. 5.3 Colour The colour distribution shall be homogeneous, unles
46、s otherwise specified. Variations in colour shall be agreed upon between the interested parties. 5.4 Dimensions 5.4.1 Length and width 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
47、. EN ISO 7823-3:2007 (E) 7 Table 2 Tolerances on length and width of cut sheets Length or width mm Tolerance Up to 1 000 30mm+From 1 001 to 2 000 60mm+From 2 001 to 3 000 90mm+3 001 and over 0,30%+5.4.2 Thickness The thickness tolerance for sheets in the range from 1 mm to 10 mm and up to 6 m2in are
48、a shall be 0,1h, where h is the nominal sheet thickness in millimetres. The tolerances apply within each sheet and from sheet to sheet. 5.4.3 Tolerances for other sheet sizes Tolerances for sheet sizes and thicknesses outside the above ranges shall be agreed upon between the interested parties. 5.4.
49、4 Conditions of measurement Measurements of dimensions shall be made at room temperature, except that, in cases of dispute, measurements shall be made under standard conditions, as specified in ISO 291. For measurements made under ambient conditions, due allowance shall be made for dimensional changes due to the differences in temperature and relative humidity between test locations. 5.5 Basic and other properties 5.5.
