1、BS EN ISO8986-2:2009ICS 83.080.20NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBRITISH STANDARDPlastics Polybutene-1 (PB-1)moulding andextrusion materialsPart 2: Preparation of test specimensand determination of properties (ISO8986-2:2009)This British Standardwas published un
2、der theauthority of the StandardsPolicy and StrategyCommittee on 31 December2009 BSI 2009ISBN 978 0 580 60084 5Amendments/corrigenda issued since publicationDate CommentsBS EN ISO 8986-2:2009National forewordThis British Standard is the UK implementation of EN ISO 8986-2:2009.It supersedes BS EN ISO
3、 8986-2:1996 which is withdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee PRI/82, Thermoplastic materials.A list of organizations represented on this committee can be obtained onrequest to its secretary.This publication does not purport to include all the necessary
4、provisionsof a contract. Users are responsible for its correct application.Compliance with a British Standard cannot confer immunityfrom legal obligations.EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 8986-2 November 2009 ICS 83.080.20 Supersedes EN ISO 8986-2:1995English Version Plastics
5、 - Polybutene-1 (PB-1) moulding and extrusion materials - Part 2: Preparation of test specimens and determination of properties (ISO 8986-2:2009) Plastiques - Matriaux base de polybutne-1 (PB-1) pour moulage et extrusion - Partie 2: Prparation des prouvettes et dtermination des proprits (ISO 8986-2:
6、2009) Kunststoffe - Polybuten-1 (PB-1)-Formmassen - Teil 2: Herstellung von Probekrpern und Bestimmung von Eigenschaften (ISO 8986-2:2009) This European Standard was approved by CEN on 21 October 2009. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the cond
7、itions 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 European Standard exists in thr
8、ee 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 national standards bodies of
9、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 United Kingdom. EUROPEAN
10、COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2009 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 8986-2:2009: EBS EN ISO 8986-
11、2:2009EN ISO 8986-2:2009 (E) 3 Foreword This document (EN ISO 8986-2:2009) 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 nati
12、onal standard, either by publication of an identical text or by endorsement, at the latest by May 2010, and conflicting national standards shall be withdrawn at the latest by May 2010. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent right
13、s. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. This document supersedes EN ISO 8986-2:1995. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Stan
14、dard: 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 the United Kingdom.
15、 Endorsement notice The text of ISO 8986-2:2009 has been approved by CEN as a EN ISO 8986-2:2009 without any modification. BS EN ISO 8986-2:2009ISO 8986-2:2009(E) ISO 2009 All rights reserved iiiForeword ISO (the International Organization for Standardization) is a worldwide federation of national s
16、tandards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO 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
17、organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules gi
18、ven in the ISO/IEC Directives, Part 2. The main task of technical committees is to prepare International Standards. 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
19、 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 patent rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO 8986-2 was prepared by Technical Committee ISO/TC 61,
20、Plastics, Subcommittee SC 9, Thermoplastic materials. This second edition cancels and replaces the first edition (ISO 8986-2:1995), which has been technically revised to reflect the changes made in the concurrent revision of ISO 8986-1. It also incorporates the Amendment ISO 8986-2:1995/Amd.1:2000.
21、ISO 8986 consists of the following parts, under the general title Plastics Polybutene-1 (PB-1) moulding and extrusion materials: Part 1: Designation system and basis for specifications Part 2: Preparation of test specimens and determination of properties BS EN ISO 8986-2:2009BS EN ISO 8986-2:2009INT
22、ERNATIONAL STANDARD ISO 8986-2:2009(E) ISO 2009 All rights reserved 1Plastics Polybutene-1 (PB-1) moulding and extrusion materials Part 2: Preparation of test specimens and determination of properties 1 Scope This part of ISO 8986 specifies the methods of preparation of test specimens and the test m
23、ethods to be used in determining the properties of polybutene-1 (PB-1) moulding and extrusion materials. For the sake of simplicity, the designation polybutene and the abbreviation PB are used in both parts of ISO 8986. Requirements for handling test material and for conditioning both the test mater
24、ial before moulding and the specimens before testing are also specified. Procedures and conditions for the preparation of test specimens and procedures for measuring properties of the materials from which these specimens are made are given. Properties and test methods which are suitable and necessar
25、y to characterize PB moulding and extrusion materials are listed. The properties have been selected from the general test methods in ISO 10350-1. Other test methods in wide use for or of particular significance to these moulding and extrusion materials are also included in this part of ISO 8986, as
26、is the designatory property specified in Part 1. In order to obtain reproducible and comparable test results, it is necessary to use the methods of specimen preparation and conditioning, the specimen dimensions and the test procedures specified herein. Values determined will not necessarily be ident
27、ical to those obtained using specimens of different dimensions or prepared using different procedures. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the l
28、atest edition of the referenced document (including any amendments) applies. ISO 62, Plastics Determination of water absorption ISO 75-2, Plastics Determination of temperature of deflection under load Part 2: Plastics and ebonite ISO 178, Plastics Determination of flexural properties ISO 179-1, Plas
29、tics Determination of Charpy impact properties Part 1: Non-instrumented impact test ISO 179-2, Plastics Determination of Charpy impact properties Part 2: Instrumented impact test ISO 291, Plastics Standard atmospheres for conditioning and testing ISO 293, Plastics Compression moulding of test specim
30、ens of thermoplastic materials BS EN ISO 8986-2:2009ISO 8986-2:2009(E) 2 ISO 2009 All rights reservedISO 527-2, Plastics Determination of tensile properties Part 2: Test conditions for moulding and extrusion plastics ISO 527-4, Plastics Determination of tensile properties Part 4: Test conditions for
31、 isotropic and orthotropic fibre-reinforced plastic composites ISO 899-1, Plastics Determination of creep behaviour Part 1: Tensile creep ISO 1133, Plastics Determination of the melt mass-flow rate (MFR) and the melt volume-flow rate (MVR) of thermoplastics ISO 1183-1, Plastics Methods for determini
32、ng the density of non-cellular plastics Part 1: Immersion method, liquid pyknometer method and titration method ISO 1183-2, Plastics Methods for determining the density of non-cellular plastics Part 2: Density gradient column method ISO 1183-3, Plastics Methods for determining the density of non-cel
33、lular plastics Part 3: Gas pyknometer method ISO 1628-3, Plastics Determination of the viscosity of polymers in dilute solution using capillary viscometers Part 3: Polyethylenes and polypropylenes ISO 2818, Plastics Preparation of test specimens by machining ISO 3167, Plastics Multipurpose test spec
34、imens ISO 4589-2, Plastics Determination of burning behaviour by oxygen index Part 2: Ambient-temperature test ISO 8256, Plastics Determination of tensile-impact strength ISO 8986-1, Plastics Polybutene-1 (PB-1) moulding and extrusion materials Part 1: Designation system and basis for specifications
35、 ISO 10350-1, Plastics Acquisition and presentation of comparable single-point data Part 1: Moulding materials ISO 11357-2, Plastics Differential scanning calorimetry (DSC) Part 2: Determination of glass transition temperature ISO 11357-3, Plastics Differential scanning calorimetry (DSC) Part 3: Det
36、ermination of temperature and enthalpy of melting and crystallization ISO 11357-6, Plastics Differential scanning calorimetry (DSC) Part 6: Determination of oxidation induction time (isothermal OIT) and oxidation induction temperature (dynamic OIT) IEC 60093, Methods of test for volume resistivity a
37、nd surface resistivity of solid electrical insulating materials IEC 60112, Method for the determination of the proof and the comparative tracking indices of solid insulating materials IEC 60243-1, Electrical strength of insulating materials Test methods Part 1: Tests at power frequencies IEC 60250,
38、Recommended methods for the determination of the permittivity and dielectric dissipation factor of electrical insulating materials at power, audio and radio frequencies including metre wavelengths IEC 60296, Fluids for electrotechnical applications Unused mineral insulating oils for transformers and
39、 switchgear BS EN ISO 8986-2:2009ISO 8986-2:2009(E) ISO 2009 All rights reserved 3IEC 60695-11-10, Fire hazard testing Part 11-10: Test flames 50 W horizontal and vertical flame test methods 3 Preparation of test specimens 3.1 General The test specimens shall be prepared by compression moulding. It
40、is essential that the specimens are always prepared by the same procedure using the same processing conditions. The material shall be kept in moisture-proof containers until it is required for use. The moisture content of filled or reinforced materials shall be expressed as a percentage of the total
41、 mass of the compound. 3.2 Treatment of the material before moulding Before processing, no pretreatment of the material sample is normally necessary. 3.3 Compression moulding Compression-moulded sheets shall be prepared in accordance with ISO 293, using the conditions specified in Table 1. Table 1 C
42、onditions for compression moulding of test specimens Moulding temperatureAverage cooling rate Demoulding temperatureFull pressure Full-pressure time Preheating pressure Preheating time Material C C/min C MPa min MPa min All grades 200 30 30 5 5 or 10a5 1 Contact 5 to 15 aUse 5 MPa with a frame mould
43、 and 10 MPa with a positive mould. The test specimens required for the determination of the properties shall be machined from the compression-moulded sheets in accordance with ISO 2818 or punched out. A type 1 (frame) mould may be used, but it is necessary to start cooling whilst simultaneously appl
44、ying the full pressure. This avoids the melt being pressed out of the frame and avoids sink marks. For thicker sheet ( 4 mm), a type 2 (positive) mould has been found to work satisfactorily. The preheating time depends on the type of mould and the type of energy input (steam or electricity). For fra
45、me moulds, 5 min is usually sufficient but for positive moulds, due to the bigger mass, a preheating time of up to 15 min may be necessary, especially if electric heating is used. NOTE 1 Since only the average cooling rate is specified, the actual cooling rate during crystallization is not fixed. Th
46、is can lead to significant deviations in properties related to crystallinity, such as density and mechanical properties. NOTE 2 Since for frame moulds full pressure is only applied upon cooling, compression-moulded sheets may suffer from insufficient homogeneity and pellet boundaries may be preserve
47、d if the heating time or the pressure is insufficient. BS EN ISO 8986-2:2009ISO 8986-2:2009(E) 4 ISO 2009 All rights reserved4 Conditioning of test specimens Before testing, test specimens shall be conditioned at atmospheric pressure in one of the standard atmospheres specified in ISO 291 for the le
48、ngth of time recommended by the material manufacturer. The conditioning atmosphere and conditioning time used shall be reported along with the test conditions in the test report. Due to the temperature dependence of the conditioning process, conditioning of test specimens at 27 C may require longer
49、or lead to unsatisfactory test results. For the sake of the reproducibility of the results, conditioning at 23 C is therefore preferred. Because of the slowness of the crystalline-phase transition which takes place after PB compounds have solidified from the melt and which results in significant changes in characteristics such as shrinkage and tensile properties, it is necessary to delay physical testing after moulding until this phase transit
