SIST EN 13677-2:2003

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.WHYHVerstärkte Thermoplast-Formmassen - Spezifikation für GMT - Teil 2: Prüfverfahren und allgemeine AnforderungenPréimprégnés renforcés thermoplastiques - Spécifications des GMT - Partie 2: Méthodes d'essai et exigences généralesReinforced thermoplastic moulding compounds - Specification for GMT - Part 2: Methods of test and general requirements83.120Reinforced plasticsICS:Ta slovenski standard je istoveten z:EN 13677-2:2003SIST EN 13677-2:2003en01-julij-2003SIST EN 13677-2:2003SLOVENSKI
STANDARD



SIST EN 13677-2:2003



EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 13677-2February 2003ICS 83.120English versionReinforced thermoplastic moulding compounds - Specificationfor GMT - Part 2: Methods of test and general requirementsPréimprégnés renforcés thermoplastiques - Spécificationsdes GMT - Partie 2: Méthodes d'essai et exigencesgénéralesVerstärkte Thermoplast-Formmassen - Spezifikation fürGMT - Teil 2: Prüfverfahren und allgemeine AnforderungenThis European Standard was approved by CEN on 28 November 2002.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the Management Centre or to any CEN member.This European Standard exists in three official versions (English, French, German). A version in any other language made by translationunder the responsibility of a CEN member into its own language and notified to the Management Centre has the same status as the officialversions.CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece,Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and UnitedKingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2003 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 13677-2:2003 ESIST EN 13677-2:2003



EN 13677-2:2003 (E)2ContentspageForeword.41Scope.52Normative references.53Terms and definitions.54General Requirements.64.1Appearance.64.2Packaging.64.3Labelling.65Sampling.65.1Certificate of Conformity.65.2Resolution of quality issues.76Preparation of plaques and test specimens.76.1Test plaques.76.2Preparation of specimens.87List of Properties.9Annex A (normative)
Procedure for determining the warpage of blanks.12A.1Principle.12A.2Apparatus.12A.3Procedure.12A.4Calculation and report of results.12Annex B (normative)
Procedure for determining the rectangularity of blanks.13B.1Principle.13B.2Apparatus.13B.3Procedure.13B.4Calculation and report of results.13Annex C (normative)
Procedure for determining the material temperature of GMT blanks prior tomoulding test plaques.14C.1General.14C.2Principle.14C.3Apparatus.14C.4Procedure.14C.5Calculation and report of results.14Annex D (normative)
Procedure for determining the blank weight and blank dimensions.15D.1Principle.15D.2Apparatus.15D.3Procedure.15D.4Calculation and presentation of results.15Annex E (normative)
Procedure for determining the shrinkage after processing.16E.1Principle.16E.2Apparatus.16E.3Procedure.16E.4Calculation and presentation of results.16Annex F (normative)
Procedure for determining the thermal processing stability.17F.1General.17F.2Principle.17F.3Apparatus.17F.4Procedure.17SIST EN 13677-2:2003



EN 13677-2:2003 (E)3F.5Calculation and presentation of results.18Annex G (normative)
Procedure for determining the flow induced anisotropy.19G.1General.19G.2Principle.19G.3Apparatus.19G.4Procedure.19G.5Calculation and presentation of results.20Annex H (normative)
Parameters for heating ovens for blanks for moulding test tensile plaques.21Annex I (informative)
Definition of GMT production direction.22Biblioqraphy.23SIST EN 13677-2:2003



EN 13677-2:2003 (E)4ForewordThis document (EN 13677-2:2003) has been prepared by Technical Committee CEN /TC 249 "Plastics", thesecretariat 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 orby endorsement, at the latest by August 2003, and conflicting national standards shall be withdrawn at the latest byAugust 2003.This standard is one part of EN 13677 which is structured as follows :Reinforced thermoplastic moulding compounds – Specification for GMT¾ Part 1 : Designation¾ Part 2 : Methods of test and general requirements¾ Part 3 : Specific requirementsAnnexes A to H are normative. Annex I is informative.According to the CEN/CENELEC Internal Regulations, the national standards organizations of the followingcountries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland,France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal,Slovakia, Spain, Sweden, Switzerland and the United Kingdom.SIST EN 13677-2:2003



EN 13677-2:2003 (E)51 ScopeThis European Standard defines the general requirements applicable to the specification of all types of glass matreinforced polypropylene composite sheet (GMT) falling within the scope of this specification as defined in Part 1 ofthe standard including the sampling procedures, packaging, storage and labelling requirements.This European Standard describes the procedures to be followed in the preparation moulded plaques from whichare cut the test specimens for the determination of mechanical properties as specified in Parts 1 & 3.This European Standard also defines the test methods to be used to determine the designated and specifiedproperties given in Parts 1 & 3 respectively.2 Normative referencesThis European Standard incorporates by dated or undated reference, provisions from other publications. Thesenormative references are cited at the appropriate places in the text, and the publications are listed hereafter. Fordated references, subsequent amendments to or revisions of any of these publications apply to this EuropeanStandard only when incorporated in it by amendment or revision. For undated references the latest edition of thepublication referred to applies (including amendments).EN 10204, Metallic products – Types of inspection documents.EN ISO 75-2, Plastics – Determination of temperature of deflection under load – Part 2: Plastics and ebonite (ISO75-2:1993).EN ISO 179-2, Plastics – Determination of Charpy impact properties – Part 2: Instrumented impact test (ISO 179-2:1997).EN ISO 472:2001, Plastics – Vocabulary (ISO 472:1999).EN ISO 527-2, Plastics - Determination of tensile properties - Part 2: Test conditions for moulding and extrusionplastics (ISO 527-2:1993 including Corr 1:1994).EN ISO 527-4, Plastics – Determination of tensile properties – Part 4: Test conditions for isotropic and orthotropicfibre-reinforced plastic composites (ISO 527-4:1997).EN ISO 1172, Textile-glass-reinforced plastics - Prepregs, moulding compounds and laminates – Determination ofthe textile-glass and mineral-filler content – Calcination methods (ISO 1172:1996).EN ISO 3146, Plastics – Determination of melting behaviour (melting temperature or melting range) of semi-crystalline polymers by capillary tube and polarizing-microscope methods (ISO 3146:2000).EN ISO 6603-2, Plastics – Determination of puncture impact behaviour of rigid plastics – Part 2: Instrumentedpuncture test (ISO 6603-2:2000).EN ISO 11403-2, Plastics - Acquisition and presentation of comparable multipoint data - Part 2: Thermal andprocessing properties (ISO 11403-2:1995).ISO 1183, Plastics – Methods for determining the density and relative density of non-cellular plastics.ISO 2577, Plastics – Thermosetting moulding materials – Determination of shrinkage.3 Terms and definitionsFor the purposes of this European Standard, the terms and definitions given in EN ISO 472:2001 apply.SIST EN 13677-2:2003



EN 13677-2:2003 (E)64 General Requirements4.1 Appearance4.1.1 SurfaceThe glass fibre reinforcement shall be thoroughly impregnated with the polypropylene matrix. No unimpregnatedfibre bundles shall be visible on the surface of an "as supplied" blank after heating to the moulding temperature asdefined in 6.1.5.4.1.2 RectangularityIf supplied as pre-cut blank, rectangularity shall be determined by measuring the diagonals of a blank using theprocedure given in the normative annex B.4.1.3 WarpageWarpage of blanks shall be determined by guiding a template over a blank using the procedure given in thenormative annex A.4.2 PackagingUnless agreed to the contrary between customer and supplier, the GMT material shall be supplied packed onpallets suitable for handling by fork lift stacker truck and transportation by road truck without slipping of individualblanks or distortion of the pallet likely to give rise to instability of the pallet.4.3 LabellingEach package shall be clearly identified with :4.3.1Reference to the designation code.4.3.2Product type.4.3.3Number of the production lot.4.3.4Number of the pallet with the lot.4.3.5Blank or coil dimensions.4.3.6Gross and net weight of the pallet.4.3.7The number of blanks or coils may also be included (optional).5 Sampling5.1 GeneralThe properties of GMT shall be measured by the manufacturer one occasion only on each lot and documented inthe form of a certificate of conformity. One lot is, as a maximum, the amount of GMT produced without changingthe product specification.5.2 Certificate of ConformitySamples shall be taken out of the production as needed to undertake both the obligatory tests defined in thisspecification plus such other optional tests as may be agreed between customer and supplier. The results of thesetests shall be reported in the certificate of conformity. The certificate shall comply with the requirements ofEN 10204.SIST EN 13677-2:2003



EN 13677-2:2003 (E)75.3 Resolution of quality issuesIn the case when issues of quality arise between customer and supplier re-testing of the material is necessary. Thesampling and tests shall be undertaken as follows.5.3.1 Sampling for measurement of blank weight and blank dimensions (thickness, width and length)30 blanks shall be taken at random from the top of the pallet in question. Blank weights and dimensions shall bemeasured on each blank and reported as the mean of the 30 individual values for each of the 30 blanks.5.3.2 Sampling for measurement of fibre content and density5 blanks shall be taken at random from the top of the pallet in question. From the centre of each blank a testspecimen of suitable size shall be cut for the determination of the density (ISO 1183) and the fibre content(EN ISO 1172). The test result shall be reported as the mean of the determination on the 5 individual blanks.5.3.3 Sampling for test plaques for mechanical testingRe-testing requires 10 test specimens. 5 test specimens shall be cut from each of 2 test plaques in accordancewith 6.2. Each test plaque shall be moulded in accordance with 6.1. If the blank size is too small for taking blanksfor the test plaques two alternatives are recommended, delivery with each lot of either extra blanks suitable formoulding the test plaques or moulded test plaques.6 Preparation of plaques and test specimens6.1 Test plaquesGMT parts are usually manufactured by a compression flow-moulding process. Therefore the determination of themechanical properties shall be made on test plaques which have also been flow moulded.6.1.1 Surface area of mould200 mm x 200 mm minimum.6.1.2 Plaque thickness4 ± 0,2 mm.6.1.3 Blank sizeSince the test plaques are moulded in a flow moulding process, only approximately 50 % of the mould area shall becovered by the stack of blanks.When the thickness of the blanks is in the range 3,7 mm – 3,8 mm, two equally sized square blanks shall beselected of a size sufficient to achieve the target 4mm thickness in the moulded test plaques. If the sheets arethinner the number of blanks may be increased. If the sheets are thicker, the number of blanks may be reduced toone.6.1.4 Blank stackingWhen 2 blanks are used they shall be stacked 0°/90° in the case of random reinforced materials and 0°/0° in thecase of UD material. Three or more blanks shall be stacked symmetrically (0°/90°/0° :0 °/90°/90°/0° : etc.) Seeinformative annex I for further information on the definition and stacking of blanks in the mould.Stacks of blanks shall be placed centrally into the mould.SIST EN 13677-2:2003



EN 13677-2:2003 (E)86.1.5 Blank temperatureThe blank temperature used to mould the test plaques shall be 210 ± 10 °C determined in accordance with themethod given in normative annex H.Should GMT show evidence of smoking during heating it is evidence of thermo-oxidative degradation and muststrictly be avoided. Material that has been seen to smoke during heating must not be used for moulding testplaques. Evidence of smoking may indicate that there is a fault in the blank heating process. See normativeannex H for further information on recommended blank heating parameters.6.1.6 Mould temperatureThe mould temperature shall be 60 ± 5 °C.6.1.7 Specific moulding pressureThe mould pressure shall be > 14 MPa.6.1.8 Handling timeThe stack of heated blanks shall be inserted into the centre of the mould cavity and the mould closed immediately.The mould stamp shall come into contact with the test material within 35 s ± 5 s after the end of the heating timeincluding no longer than 5 s ± 1 s after placing the blanks into the mould.6.1.9 Pressing speedFrom the time the mould stamp comes into contact with the test material to the time of maximum force shall be amaximum of 5 s.6.1.10 Cooling timeThe time between the time of maximum force and the time at which the mould stamp is raised shall be a minimumof 60 s.6.2 Preparation of specimens6.2.1 Net area of the moulded test plaqueThe glass fibre takes up preferential orientation in the corners of the test plaque mould during the mouldingprocess. Therefore test specimens can only be cut for the centre portion of the test plaque where the fibreorientation is isotropic. 15 % of the width and 15 % of the length of the test plaque shall be cut away on each sideof the plaque leaving an area from which the test specimens can be cut. e.g. a plaque of 400 mm x 4
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