1、BRITISH STANDARD BS EN ISO 12017:1996 Plastics Poly (methyl methacrylate) double- and triple-skin sheets Test methods ICS 83.140BSENISO12017:1996 This British Standard, having been prepared under the direction of the Sector Board for Materials and Chemicals, was published under the authority of the
2、Standards Board and comes into effect on 15 December 1996 BSI 11-1998 The following BSI references relate to the work on this standard: Committee reference PRI/75 Draft for comment 93/302918 DC ISBN 0 580 26602 8 Committees responsible for this British Standard The preparation of this British Standa
3、rd was entrusted to Technical Committee PRI/75, Plastics and rubber films and sheets, upon which the following bodies were represented: British Plastics Federation Her Majestys Stationery Office Institute of Trading Standards Administration Ministry of Defence Packaging and Industrial Films Associat
4、ion PIRA International Amendments issued since publication Amd. No. Date CommentsBSENISO12017:1996 BSI 11-1998 i Contents Page Committees responsible Inside front cover National foreword ii 1 Scope 3 2 Normative references 3 3 Definitions and abbreviations 3 4 Composition of materials 4 5 Characteri
5、stics 4 6 Test methods 5 7 Condensate formation 7 Annex A (normative) Determination of luminous transmittance of PMMA double- and triple-skin sheets 11 Annex B (normative) Bending test to examine the chemical compatibility of PMMA with other materials 14 Annex ZA (normative) Normative references to
6、international publications with their relevant European publications 16 Figure 1 Example of a double-skin sheet 3 Figure 2 Example of a double-skin sheet 4 Figure 3 Example of a triple-skin sheet 4 Figure 4 Examples of typical dimensions and mass per unit area of DSS 8 Figure 5 Examples of typical d
7、imensions and mass per unit area of TSS 8 Figure 6 Curvature of sheet surface 9 Figure 7 Curvature of edge in extrusion direction 10 Figure 8 Three-point bending test 10 Figure A.1 Integrating sphere for measuring light transmittance t A(determination of E x ) 13 Figure B.1 Bending test for chemical
8、 compatibility 15 List of references Inside back coverBSENISO12017:1996 ii BSI 11-1998 National foreword This British Standard has been prepared by Technical Committee PRI/75 and is the English language version of EN ISO 12017:1996 Plastics Poly(methyl methacrylate) double- and triple-skin sheets Te
9、st methods, published by the European Committee for Standardization (CEN). It is identical with ISO12017:1995 published by the International Organization for Standardization(ISO). EN 12017:1996 was produced as a result of international discussions in which the United Kingdom took an active part. A B
10、ritish Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Cross-references Publication referred to Cor
11、responding British Standard EN 201420-2:1993 (ISO140-2:1991) BS EN 20140 Acoustics. Measurement of sound insulation in buildings and of building elements Part 2:1993 Determination, verification and application of precision data EN ISO 140-3:1995 (ISO140-3:1995 BS EN ISO 140 Acoustics. Measurement of
12、 sound insulation in buildings and building elements Part 3:1995 Laboratory measurement of airborne sound insulation of building elements ISO 2859-1:1989 BS 6001 Sampling procedures for inspection by attributes Part 1:1991 Specification for sampling plans indexed by acceptable quality level (AQL) fo
13、r lot-by-lot inspection ISO 4892-2:1994 BS 2782 Methods of testing plastics Part 5 Optical and colour properties, weathering Method 540E:1995 Methods of exposure to laboratory light sources. Xenon arc sources Summary of pages This document comprises a front cover, an inside front cover, pages i and
14、ii, theENtitle page, pages 2 to 16, an inside back cover and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover.EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 12
15、017 July 1996 ICS 83.140 Descriptors: See ISO document English version Plastics Poly(methyl methacrylate) double- and triple-skin sheets Test methods (ISO 12017:1995) Plastiques Plaques de poly(mthacrylate de mthyle) double et triple paroi Mthodes dessai (ISO 12017:1995) Kunststoffe Poly(methyl meth
16、acrylat) Stegdoppel- und Stegdreifachplatten Prfverfahren (ISO 12017:1995) This European Standard was approved by CEN on 1996-07-12. 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 sta
17、ndard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the Central Secretariat or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any other
18、language made by translation under the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ire
19、land, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. CEN European Committee for Standardization Comit Europen de Normalisation Europisches Komitee fr Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels 1996 Copyright reserved to CEN memb
20、ers Ref. No. EN ISO 12017:1996 E2 blankENISO12017:1996 BSI 11-1998 3 1 Scope This International Standard specifies the test methods for quality control of poly(methyl methacrylate) (PMMA) extruded double- and triple-skin flat sheets, obtained from colourless and coloured transparent, translucent and
21、 opaque grades of materials as defined in clause4. The minimum sheet width is 600mm. The main applications of these sheets are in building and agriculture (greenhouses). 2 Normative references The following standards contain provisions which, through reference in this text, constitute provisions of
22、this International Standard. At the time of publication, the editions indicated were valid. All standards are subject to revision, and parties to agreements based on this International Standard are encouraged to investigate the possibility of applying the most recent editions of the standards indica
23、ted below. Members of IEC and ISO maintain registers of currently valid International Standards. ISO 140-1:1990, Acoustics Measurement of sound insulation in buildings and of building elements Part 1: Requirements for laboratories. ISO 140-2:1991, Acoustics Measurement of sound insulation in buildin
24、gs and of building elements Part 2: Determination, verification and application of precision data. ISO 140-3:1978, Acoustics Measurement of sound insulation in buildings and of building elements Part 3: Laboratory measurements of airborne sound insulation of building elements. ISO 291:1977, Plastics
25、 Standard atmospheres for conditioning and testing. ISO 2818:1994, Plastics Preparation of test specimens by machining. ISO 2859-0: 1) , Sampling procedures for inspection by attributes Part 0: Introduction to the ISO 2859 attribute sampling system. ISO 2859-1:1989, Sampling procedures for inspectio
26、n by attributes Part 1: Sampling plans indexed by acceptable quality level (AQL) for lot-by-lot inspection. ISO 4892-2:1994, Plastics Methods of exposure to laboratory light sources Part 2: Xenon-arc sources. ISO 7823-2:1989, Plastics Poly(methyl methacrylate) sheets Types, dimensions and characteri
27、stics Part 2: Melt-calendered extruded sheets. ISO 8302:1991, Thermal insulation Determination of steady-state thermal resistance and related properties Guarded hot plate apparatus. ISO/CIE 10526:1991, CIE standard colorimetric illuminants. 3 Definitions and abbreviations For the purposes of this In
28、ternational Standard, the following definitions and abbreviations apply. 3.1 double-skin sheet (DSS) a sheet having two parallel external skins, differently spaced and jointed by ribs of different shapes (see examples inFigure 1 andFigure 2) 3.2 triple-skin sheet (TSS) a sheet having two external an
29、d an internal skin which is parallel and properly spaced by ribs from the external one (see an example inFigure 3) 1) To be published. Figure 1 Example of a double-skin sheetENISO12017:1996 4 BSI 11-1998 4 Composition of materials This International Standard applies to PMMA homopolymers and to copol
30、ymers of methyl methacrylate containing at least 80% (m/m) of MMA and not more than 20% (m/m) of acrylic ester or other suitable monomers. Such materials may be unmodified or may contain lubricants, processing aids, UV absorbers, pigments and colorants. 5 Characteristics 5.1 Main characteristics of
31、DSS and TSS 5.1.1 Total thickness 5.1.2 Total width 5.1.3 Skin thickness 5.1.4 Mass per unit area 5.1.5 Rib thickness 5.1.6 Rib geometry (spacing, angle) 5.2 Profile The profile of a sheet is defined collectively by the characteristics specified in5.1 and examples are shown in Figure 4 andFigure 5.
32、5.3 Other characteristics of DSS and TSS 5.3.1 Curvature 5.3.2 Curvature of edge in extrusion direction 5.3.3 Optical properties 5.3.4 Thermal resistance 5.3.5 Bending properties 5.3.6 Sound insulation 5.3.7 Fire resistance 5.3.8 Weatherability 5.3.9 Chemical resistance to gaskets and sealants 5.3.1
33、0 Internal stress 5.3.11 Condensate formation Figure 2 Example of a double-skin sheet Figure 3 Example of a triple-skin sheetENISO12017:1996 BSI 11-1998 5 6 Test methods 6.1 General 6.1.1 Test conditions Make all measurements under the standard conditions of 23C 2C and (50 5)% relative humidity (ref
34、er to ISO 291). For measurements made under local ambient conditions, due allowance shall be made for dimensional changes due to the differences in temperature and relative humidity. 6.1.2 Sampling The sampling procedure shall be agreed upon between the interested parties. The procedures described i
35、n ISO 2859-0 and ISO 2859-1 are widely accepted and frequently used. Hence these are recommended for sampling. The test report shall include the following information: a) a reference to this International Standard; b) all details necessary to identify the sample used for the tests. 6.1.3 Preparation
36、 of test specimens Specimens shall be prepared in accordance with the procedures described in ISO 2818 wherever applicable. 6.2 Thickness measurements 6.2.1 Total thickness Measure the total thickness, to the nearest 0,1mm, at 200mm intervals over the whole extrusion width, beginning at the central
37、point of the edge cell. Calculate the average of the measurements. 6.2.2 Minimum skin thickness Measure the thickness of the outer skins, to the nearest 0,1mm, at the point of minimum thickness. Do not report the thickness of the inner skin of a TSS; however, check to ensure that the inner skin is i
38、ntact. 6.2.3 Minimum rib thickness Measure the rib thickness, to the nearest 0,1mm, at the thinnest point of the thinnest rib. 6.2.4 Test report The test report shall include the following measurements, accurate to 0,1mm: a) the average total thickness, minimum thickness and maximum thickness; b) th
39、e minimum outer-skin thickness; c) the minimum rib thickness. 6.3 Width and length measurements Measure the extrusion width, the cut width (ifnecessary) and the sheet length in the extrusion direction to the nearest 0,1mm. Report the width and the length measured. 6.4 Rib geometry Report the nominal
40、 values of the rib spacing, the rib angles and any other relevant rib-geometry parameters. 6.5 Mass per unit area Weigh, to the nearest 1 g, strips with a width corresponding to the extrusion width and 100mm in length. Calculate the mass per unit area, r A , in kilograms per square metre, from the e
41、quation where Report the value of r Acalculated from the above equation to the nearest 0,01 kg/m 2 . 6.6 Curvature of sheet surface Measure the curvature on a full-size sheet, using a1000-mm-long straight edge (seeFigure 6). Place the specimen, in the vertical position (extrusion direction horizonta
42、l), on a plane horizontal surface, and hold it upright. Place the straight edge against the concave surface of the sheet and measure the maximum distance a between the sheet surface and the straight edge(1000mm secant line of the curvature) in the extrusion direction. Similarly, measure the maximum
43、curvature b at the cut ends (perpendicular to the extrusion direction). If the width is less than 1000mm, measure the curvature b over the full width. Report the distances measured. NOTE 1The sheet is normally longer than 1000mm. 6.7 Curvature of edge in extrusion direction Measure the edge curvatur
44、e on a full-size sheet at the side edges, using a 1000-mm-long straight edge (seeFigure 7). Place the test sheet in the horizontal position on a plane horizontal surface so that the sheet lies concave side down. Measure the maximum distance c between a side edge of the sheet and the straight edge. R
45、eport the distance measured. m is the mass, in grams, of the specimen; W is the width, in millimetres, of the specimen. r A m W 100 -10 3 =ENISO12017:1996 6 BSI 11-1998 6.8 Optical properties 6.8.1 Luminous transmittance Measure the luminous transmittance by the method described in annex A. NOTE 2Lu
46、minous transmittance of DSS and TSS cannot be measured accurately by the method given in ISO 13468-1: 2) , Plastics Determination of the total luminous transmittance of transparent materials Part 1: Single-beam instrument. Due to the complex geometry of DSS and TSS, it does not necessarily give reli
47、able values. NOTE 3A spectrometer does not give reproducible results either. 6.8.2 Colour The method used for the determination of colour and colour variations shall be agreed on between the interested parties. 6.8.3 Appearance Any defects shall be evaluated by inspecting the sheet under daylight or
48、 a daylight-type fluorescent lamp with a colour temperature of 6 500 K 650 K and rated at not less than 40 W. Examples of defects are: a) bubbles; b) cracks; c) crazing. 6.8.4 Test report The test report shall include the following information, when measured: a) the luminous transmittance; b) the co
49、lour and colour variation; c) details of any defects in appearance. 6.9 Thermal resistance Measure the thermal resistance in accordance with ISO 8302 and report. 6.10 Three-point bending test The bending test is an important criterion in assessing sheet quality and judging the consistency of the extrusion process. 6.10.1 Procedure Use specimens 100mm long in the extrusion direction. If the extrusion width is between 600mm and800mm, use the whole width
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