1、| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | BRITISH STANDARD BS EN 12971-3:1999 The Eu
2、ropean Standard EN 12971-3:1999 has the status of a British Standard ICS 59.100.10 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW Reinforcements Specification for textile glass chopped strands Part 3: Specific requirementsThis British Standard, having been prepared under the
3、direction of the Sector Committee for Materials and Chemicals, was published under the authority of the Standards Committee and comes into effect on 15 September 1999 BSI 09-1999 ISBN 0 580 32890 2 BS EN 12971-3:1999 Amendments issued since publication Amd. No. Date Comments National foreword This B
4、ritish Standard is the English language version of EN 12971-3:1999. The UK participation in its preparation was entrusted to Technical Committee PRI/42, Fibre reinforced thermosetting plastics and prepregs, which has the responsibility to: aid enquirers to understand the text; present to the respons
5、ible 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. A list of organizations represented on this committee can be obtained on request to its sec
6、retary. NOTE The title of this part of EN 12971 has been changed by CEN. The foreword of this part and the forewords of parts 1 and 2 still refer to the previous title. Cross-references The British Standards which implement international or European publications referred to in this document may be f
7、ound in the BSI Standards Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Find” facility of the BSI Standards Electronic Catalogue. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standa
8、rds are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 4, an inside back cover and a back cover. The
9、BSI copyright notice displayed throughout this document indicates when the document was last issued.CEN European Committee for Standardization Comite Europe en de Normalisation Europa isches Komitee fu r Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels 1999 CEN All rights of exploita
10、tion in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 12971-3:1999 E EUROPEAN STANDARD EN 12971-3 NORME EUROPE ENNE EUROPA ISCHE NORM May 1999 ICS 59.100.10 English version Reinforcements Specification for textile glass chopped strands Part 3: Specific requiremen
11、ts Renforts Spe cification de fils de verre coupe s Partie 3: Exigences particulie res Versta rkungen Spezifikation fu r geschnittene Textilglasgarne Teil 3: Technische Produktspezifikation This European Standard was approved by CEN on 16 April 1999. CEN members are bound to comply with the CEN/CENE
12、LEC Internal Regulations 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 Central Secretariat or to any C
13、EN member. This European 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 Central Secretariat has the same status as the official versions. CEN
14、members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom.Page 2 EN 12971-3:1999 BSI 09-1999 Foreword This European Standa
15、rd has been prepared by Technical Committee CEN/TC 249, Plastics, the Secretariat of which is held by IBN. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by November 1999, and conflicting national s
16、tandards shall be withdrawn at the latest by November 1999. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, I
17、celand, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom. This standard is one part of EN 12971 which is structured as follows: Textile glass Chopped strands Part 1: Designation; Textile glass Chopped strands Part 2: Test methods and genera
18、l requirements; Textile glass Chopped strands Part 3: Technical specification. Contents Page Foreword 2 1 Scope 3 2 Normative references 3 3 Definitions 3 4 Specification 3 4.1 Obligatory specified parameters 3 4.2 Other obligatory information to be included in the specification 3 4.3 Optional speci
19、fied parameters 4Page 3 EN 12971-3:1999 BSI 09-1999 Table 1 Parameters to be defined and controlled Parameter Test method Tolerance on nominal Individual Lot average Combustible matter content ISO 1887 40 % 20 % Moisture content EN ISO 3344 For dry chopped strands 30 % 15 % For wet chopped strands N
20、/A 30 % 1 Scope 1.1 This part 3 of EN 12971 gives a specification for chopped strands made from continuous filament textile glass. The specification defines those parameters which are specified plus other parameters which may be specified if required for a particular application or processing method
21、. 1.2 The specification does not define absolute or nominal values for any parameter. The value of a specified parameter is defined by the manufacturer but this specification defines the method of test to be used to determine the value of each specified parameter and the tolerance about which the pa
22、rameter is controlled by the manufacturer. 1.3 The parameters which are always defined in any chopped strands specification are defined in 4.1. The other parameters which are included in a specification are either nominated by the manufacturer or agreed between manufacturer and customer. These param
23、eters are defined in 4.3. 2 Normative references This European Standard incorporates by dated or undated reference, provisions from other publications. These normative references are cited at the appropriate places in the text and the publications are listed hereafter. For dated references, subseque
24、nt amendments to or revisions of any of these publications apply to this European Standard only when incorporated in it by amendment or revision. For undated references the latest edition of the publication referred to applies. EN ISO 1886, Reinforcement fibres Sampling plans applicable to received
25、batches. (ISO 1886:1990) EN ISO 3344, Reinforcement products Determination of moisture content. (ISO 3344:1997) ISO 472, Plastics Vocabulary. ISO 1887, Textile glass Determination of combustible-matter content. ISO 1888, Textile glass Staple fibres or filaments Determination of average diameter. ISO
26、/CD 15100, Reinforcement fibres Chopped strands Determination of bulk density. 3 Definitions For the purposes of this part 3 of EN 12971 the definitions given in ISO 472 apply. Additional terms are defined in part 2 of this standard. 4 Specification 4.1 Obligatory specified parameters For each texti
27、le glass chopped strand manufactured in accordance with this specification, the manufacturer shall define the nominal values of all the parameters included in Table 1 and 2. These parameters are divided into two groups. Those given in Table 1 shall be defined and are subject to control by the manufa
28、cturer to the defined tolerances. Those given in Table 2 are required for the designation only and shall be defined but are not subject to control and testing by the manufacturer. Table 2 Parameters to be defined but not controlled Parameters Average fibre length, L Filament diameter Glass type 4.2
29、Other obligatory information to be included in the specification The manufacturer shall state in the specification the following: the application for which the specified chopped strand product has been designed e.g. thermoplastic injection moulding; the resin/polymer/matrix compatibility of the size
30、 system e.g. polyamide, polyester, phenolic etc.; for chopped strands designed to be compatible with non-polymeric systems the manufacturer shall state the matrix compatibility e.g. Portland cement, calcium silicate, etc.Page 4 EN 12971-3:1999 BSI 09-1999 Table 3 Optional parameters Parameter Test m
31、ethod Tolerance on nominal Individual Lot average Bulk density Moisture loss in storage ISO/CD 15100 EN ISO 3344 4.3 Optional specified parameters For each textile glass chopped strand manufactured in accordance with this specification, the manufacturer may define the nominal values of all the param
32、eters included in Table 3. When specified these parameters shall be tested in accordance with the methods stated and controlled within the tolerances defined.blankBS EN 12971-3:1999 BSI 389 Chiswick High Road London W4 4AL | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
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