EN ISO 1172-1998 en Textile-glass-reinforced plastics - Prepregs moulding compounds and laminates - Determination of the textile-glass and mineral-filler content - Calcination meth.pdf

1、BRITISH STANDARD BS EN ISO 1172:1999 Incorporating Amendment No.1 to BSISO1172:1996 (renumbers the BS as BSENISO 1172:1999) Textile-glass-reinforced plastics Prepregs, moulding compounds and laminates Determination of the textile-glass and mineral-filler content Calcination methods The European Stan

2、dard ENISO1172:1998 has the status of a BritishStandard ICS 83.120BSENISO1172:1999 This BritishStandard, having been prepared under the directionof the Sector Board forMaterials and Chemicals, waspublished under the authorityof the Standards Boardand comes into effect on 15April1997 BSI 03-2000 ISBN

3、 0 580 27291 5 National foreword This BritishStandard is the English language version of EN ISO1172:1998. 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 under

4、stand the text; present to the responsible international/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

5、this committee can be obtained on request to its secretary. Cross-references The BritishStandards which implement international or European publications referred to in this document may be found in the BSI Standards Catalogue under the section entitled “International Standards Correspondence Index”,

6、 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 Standards are responsible for their correct application. Compliance with a British Standard does not of itself confe

7、r immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pagesi andii, theEN ISO title page, page2, theISO title page, pagesiitoiv, pages1 to6 and a back cover. This standard has been updated (see copyright date) and may have had amendments in

8、corporated. This will be indicated in the amendment table on the inside front cover. Amendments issued since publication Amd. No. Date Comments 10350 April1999 Implementation of the European StandardBSENISO1172:1999 BSI 03-2000 i Contents Page National foreword Inside front cover Foreword 2 Foreword

9、 iii Text of ISO1172 1ii blankEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO1172 August1998 ICS 83.120 Supersedes EN60:1977 Descriptors: See ISO document English version Textile-glass-reinforced plastics Prepregs, moulding compounds and laminates Determination of the textile-glass and mine

10、ral-filler content Calcination methods (ISO1172:1996) Plastiques renforcs de verre textile Primprgns, compositions de moulage et stratifis Dtermination des taux de verre textile et de charge minrale Mthodes par calcination (ISO1172:1996) Textilglasverstrkte Kunststoffe Prepregs, Formmassen und Lamin

11、ate Bestimmung des Textilglas-und Mineralfllstoffgehalts Kalzinierungsverfahren (ISO1172:1996) This European Standard was approved by CEN on3 August1998. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the sta

12、tus 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 CEN member. This European Standard exists in three official versions (English, French, German). A

13、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 members are the national standards bodies of Austria, Belgium, CzechRepublic, Denmark, Finland, F

14、rance, Germany, Greece, Iceland, Ireland, 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

15、 1998 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO1172:1998EENISO1172:1998 BSI 03-2000 2 Foreword The text of the International Standard from Technical Committee ISO/TC61, Plastics, of the International Organization for Stan

16、dardization (ISO) has been taken over as a European Standard by Technical Committee CEN/TC249, Plastics, the Secretariat of which is held by IBN. This European Standard replaces EN60:1977. This European Standard shall be given the status of a national standard, either by publication of an identical

17、text or by endorsement, at the latest by February1999, and conflicting national standards shall be withdrawn at the latest by February1999. According to CEN/CENELEC Internal Regulations, the following countries are bound to implement this European Standard: Austria, Belgium, CzechRepublic, Denmark,

18、Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and theUnitedKingdom. Endorsement notice The text of the International Standard ISO1172:1996 has been approved by CEN as a European Standard without any modification.BSISO

19、1172:1996 ii BSI 03-2000 Contents Page Foreword iii 1 Scope 1 2 Normative references 1 3 Definitions 1 4 Principle 1 5 Sampling 2 6 Preparation of test specimens 2 7 Determination 2 7.1 Method A 2 7.1.1 Reagents 2 7.1.2 Apparatus 2 7.1.3 Procedure 2 7.1.4 Expression of results 3 7.2 Method B 3 7.2.1

20、 Reagents 3 7.2.2 Apparatus 3 7.2.3 Procedure 3 7.2.4 Expression of results 4 8 Precision 4 9 Test report 5 Annex A (informative) Alternative method of separating chopped glassfibrefrommineral filler 6 Descriptors: Reinforced plastics, textile glass, glass reinforced plastics, laminates, prepregs, t

21、ests, physical tests, roasting tests, determination of content, glass fibres, mineral matter.BSISO1172:1996 BSI 03-2000 iii Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing Internationa

22、l 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 organizations, governmental and non-governmental, in liaison with ISO,

23、also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an Intern

24、ational Standard requires approval by at least75% of the member bodies casting a vote. International Standard ISO1172 was prepared by Technical Committee ISO/TC61, Plastics, Subcommittee SC13, Composites and reinforcement fibres. This second edition cancels and replaces the first edition (ISO1172:19

25、75), which has been technically revised (an additional method, method B, has been included and the annex, which concerned the estimation of the standard deviation, has been replaced byAnnex A describing an alternative method of separating chopped glass fibre from mineral filler). Annex A of this Int

26、ernational Standard is for information only.iv blankBSISO1172:1996 BSI 03-2000 1 WARNING This International Standard does not give details of the precautions that should be taken to meet health and safety requirements. The test methods described require the use of high temperatures and concentrated

27、acids. It is the responsibility of the user of this International Standard to follow the appropriate health and safety procedures. 1 Scope This International Standard specifies two calcination methods for the determination of the textile-glass and mineral- filler content of glass-reinforced plastics

28、: Method A: for the determination of the textile-glass content when no mineral fillers are present. Method B: for the determination of the textile-glass and mineral-filler content when both components are present. This International Standard is applicable to the following types of material: prepregs

29、 made from yarns, rovings, tapes or fabrics; SMC, BMC and DMC moulding compounds; textile-glass-reinforced thermoplastic moulding materials and granules; filled or unfilled textile-glass laminates made with thermosetting or thermoplastic resins. The methods are not applicable to the following types

30、of reinforced plastic: those containing reinforcements other than textile glass; those containing materials which do not completely burn off at the test temperature (forexample, those based on silicone resin); those containing mineral fillers which degrade at temperatures below the minimum calcinati

31、on temperature. For these materials, ISO11667, Fibre-reinforced plastics Moulding compounds and prepregs Determination of resin, reinforcement-fibre and mineral-filler content Dissolution method, may be used. 2 Normative references The following standards contain provisions which, through reference

32、in this text, constitute provisions of 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

33、recent editions of the standards indicated below. Members of IEC and ISO maintain registers of currently valid International Standards. ISO472:1988, Plastics Vocabulary. ISO4793:1980, Laboratory sintered (fritted) filters Porosity grading, classification and designation. ISO8604:1988, Plastics Prepr

34、egs Definitions of terms and symbols for designations. 3 Definitions For the purposes of this International Standard, the definitions given in ISO472 and ISO8604 apply. 4 Principle A test specimen is weighed and subsequently calcinated at a defined temperature. The specimen is then reweighed and the

35、 non-combustible matter content (glass+filler) obtained by determining the difference in mass of a test specimen before and after calcination in one of the following ways: a) In the case of materials containing no fillers the glass content is calculated directly from the difference in mass(method A)

36、; b) In the case of materials containing both glass and filler, the glass and filler remaining after calcination are separated by dissolution of the filler in hydrochloric acid. The difference between the mass of the specimen before calcination and the mass of the dried specimen after reaction with

37、acid is used to measure the glass content. The filler content is obtained by calculating the difference between the mass of the specimen after calcination and the mass of the dried specimen after reaction with acid (method B). The test method requires that all weighings be made at constant mass afte

38、r repeated calcination and/or drying. In those cases where known materials are being tested regularly, a minimum time for the calcination and drying stages may be determined by experiment to ensure that constant mass has been reached.BSISO1172:1996 2 BSI 03-2000 NOTE 1If the material tested contains

39、 a resin which is combustible under the test conditions and/or fillers which do not degrade by calcination, then the loss on ignition is equal to the resin content. It should be noted that the resin content calculated in this way includes the combustible part of the other components in the compositi

40、on (glass size, pigments, etc.) but this is usually small compared to the resin content. NOTE 2In those cases where fillers are present that are degraded at the test temperature, it is not possible to obtain an accurate determination of the glass, resin or filler content. 5 Sampling 5.1 The determin

41、ation of the glass and filler contents is shall be carried out in parallel on two specimens which are as near identical as possible. The result of the test is the average of the measurements on the two specimens, provided that the difference between the two measurements is less than5%. If this is no

42、t the case, a third specimen shall be tested which is as near identical to the other two as possible. The three values shall then be used to calculate the test result. 5.2 In order to carry out an evaluation test the result of which is as representative as possible of the glass and filler content of

43、 the elementary unit or laboratory sample, this test procedure may need to be repeated a certain number of times, at specific locations in the elementary unit examined. The number of times and the actual locations will be defined either in the product specification or by the person requesting the an

44、alysis. In the latter case, the number and location will be decided by experience or as the result of previous work. 5.3 For all tests other than those on elementary units, take specimens that are as representative of the material under test as circumstances allow. 6 Preparation of test specimens Th

45、e test specimens shall be fully representative of the piece or batch examined. They shall be obtained in accordance with clause5. Unless otherwise specified, it is recommended that the specimens be cut out in a shape which allows them to fit into a silica boat or porcelain crucible. The mass of each

46、 specimen shall be within the range 2g to20g for prepregs and moulding compounds; 2g to10g for laminates. For each test result, use a minimum of two specimens(see5.1). In the case of prepregs and moulding compounds which contain solvents or free monomer, care shall be taken to avoid loss of volatile

47、 matter. For SMC, the protective release film shall not be removed from the laboratory sample or the test specimen until just before commencing the test procedure. All prepreg and moulding-compound laboratory samples, including SMC, shall be sealed in a vapourproof plastic bag immediately after the

48、laboratory sample has been taken. 7 Determination The choice of method used to determine the glass and filler content will depend on the presence or absence of filler. The methods described in this International Standard are Method A: for the determination of the glass content when no fillers are pr

49、esent. Method B: for the determination of the glass and filler content when both components are present. 7.1 Method A 7.1.1 Reagents No reagents are required for method A. 7.1.2 Apparatus Normal laboratory apparatus, plus the following: 7.1.2.1 Balance, graduated to0,1mg. 7.1.2.2 Silica boat or porcelain crucible, of a suitable size to contain a specimen. 7.1.2.3 Muffle furnace, located under a ventilated hood and capable of maintaining the chosen temperature(see7.1.3.2) to within 20 C. 7.1.2.4 Desiccator, containing