SIST EN ISO 306:2004
(Main)Plastics - Thermoplastic materials - Determination of Vicat softening temperature (VST) (ISO 306:2004)
Plastics - Thermoplastic materials - Determination of Vicat softening temperature (VST) (ISO 306:2004)
ISO 306:2004 specifies four methods for the determination of the Vicat softening temperature (VST) of thermoplastic materials:
Method A50 using a force of 10 N and a heating rate of 50 °C/h
Method B50 using a force of 50 N and a heating rate of 50 °C/h
Method A120 using a force of 10 N and a heating rate of 120 °C/h
Method B120 using a force of 50 N and a heating rate of 120 °C/h.
The methods specified are applicable only to thermoplastics, for which they give a measure of the temperature at which the thermoplastics start to soften rapidly.
Kunststoffe - Thermoplaste - Bestimmung der Vicat-Erweichungstemperatur (VST) (ISO 306:2004)
1.1 Diese Internationale Norm legt vier Verfahren zur Bestimmung der Vicat Erweichungstemperatur (VST) von Thermoplasten fest:
Verfahren A50 mit einer Kraft von 10 N und einer Heizrate von 50 °C/h
Verfahren B50 mit einer Kraft von 50 N und einer Heizrate von 50 °C/h
Verfahren A120 mit einer Kraft von 10 N und einer Heizrate von 120 °C/h
Verfahren B120 mit einer Kraft von 50 N und einer Heizrate von 120 °C/h
1.2 Die festgelegten Verfahren sind nur auf Thermoplaste anwendbar, für die sie eine Kennzahl der Temperatur liefern, bei der die Thermoplaste schnell zu erweichen beginnen.
Plastiques - Matieres thermoplastiques - Détermination de la température de ramollissement Vicat (VST) (ISO 306:2004)
L'ISO 306:2004 spécifie quatre méthodes de détermination de la température de ramollissement Vicat (VST) des matériaux thermoplastiques:
Méthode A50 utilisant une charge de 10 N et une vitesse de chauffage de 50 °C/h;
Méthode B50 utilisant une charge de 50 N et une vitesse de chauffage de 50 °C/h;
Méthode A120 utilisant une charge de 10 N et une vitesse de chauffage de 120 °C/h;
Méthode B120 utilisant une charge de 50 N et une vitesse de chauffage de 120 °C/h.
Les méthodes spécifiées sont seulement applicables aux thermoplastiques, dont elles permettent de mesurer la température à laquelle leur ramollissement devient rapide.
Polimerni materiali - Plastomeri - Določanje temperature zmehčišča po Vicatu (VST) (ISO 306:2004)
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN ISO 306:2004
01-oktober-2004
1DGRPHãþD
SIST EN ISO 306:2000
3ROLPHUQLPDWHULDOL3ODVWRPHUL'RORþDQMHWHPSHUDWXUH]PHKþLãþDSR9LFDWX
967 ,62
Plastics - Thermoplastic materials - Determination of Vicat softening temperature (VST)
(ISO 306:2004)
Kunststoffe - Thermoplaste - Bestimmung der Vicat-Erweichungstemperatur (VST) (ISO
306:2004)
Plastiques - Matieres thermoplastiques - Détermination de la température de
ramollissement Vicat (VST) (ISO 306:2004)
Ta slovenski standard je istoveten z: EN ISO 306:2004
ICS:
83.080.20 Plastomeri Thermoplastic materials
SIST EN ISO 306:2004 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
---------------------- Page: 1 ----------------------
SIST EN ISO 306:2004
---------------------- Page: 2 ----------------------
SIST EN ISO 306:2004
EUROPEAN STANDARD
EN ISO 306
NORME EUROPÉENNE
EUROPÄISCHE NORM
July 2004
ICS 83.080.20
English version
Plastics - Thermoplastic materials - Determination of Vicat
softening temperature (VST) (ISO 306:2004)
Plastiques - Matières thermoplastiques - Détermination de Kunststoffe - Thermoplaste - Bestimmung der Vicat-
la température de ramollissement Vicat (VST) (ISO Erweichungstemperatur (VST) (ISO 306:2004)
306:2004)
This European Standard was approved by CEN on 7 July 2004.
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 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 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, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,
Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia,
Slovenia, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36 B-1050 Brussels
© 2004 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 306:2004: E
worldwide for CEN national Members.
---------------------- Page: 3 ----------------------
SIST EN ISO 306:2004
EN ISO 306:2004 (E)
Foreword
This document (EN ISO 306:2004) has been prepared by Technical Committee ISO/TC 61
"Plastics" in collaborationwith 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 January 2005, and conflicting national
standards shall be withdrawn at the latest by January 2005.
According to the CEN/CENELEC Internal Regulations, the national standards organizations of
the following countries are bound to implement this European Standard: Austria, Belgium,
Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary,
Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland,
Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
Endorsement notice
The text of ISO 306:2004 has been approved by CEN as EN ISO 306 2004 without any
modifications.
2
---------------------- Page: 4 ----------------------
SIST EN ISO 306:2004
INTERNATIONAL ISO
STANDARD 306
Fourth edition
2004-07-15
Plastics — Thermoplastic materials —
Determination of Vicat softening
temperature (VST)
Plastiques — Matières thermoplastiques — Détermination de la
température de ramollissement Vicat (VST)
Reference number
ISO 306:2004(E)
©
ISO 2004
---------------------- Page: 5 ----------------------
SIST EN ISO 306:2004
ISO 306:2004(E)
PDF disclaimer
This PDF file may contain embedded typefaces. In accordance with Adobe's licensing policy, this file may be printed or viewed but shall
not be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In
downloading this file, parties accept therein the responsibility of not infringing Adobe's licensing policy. The ISO Central Secretariat
accepts no liability in this area.
Adobe is a trademark of Adobe Systems Incorporated.
Details of the software products used to create this PDF file can be found in the General Info relative to the file; the PDF-creation
parameters were optimized for printing. Every care has been taken to ensure that the file is suitable for use by ISO member bodies. In the
unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below.
© ISO 2004
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means,
electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or
ISO's member body in the country of the requester.
ISO copyright office
Case postale 56 CH-1211 Geneva 20
Tel. + 41 22 749 01 11
Fax + 41 22 749 09 47
E-mail copyright@iso.org
Web www.iso.org
Published in Switzerland
©
ii ISO 2004 – All rights reserved
---------------------- Page: 6 ----------------------
SIST EN ISO 306:2004
ISO 306:2004(E)
Contents Page
1 Scope . 1
2 Normative references . 1
3 Principle . 1
4 Apparatus . 2
5 Test specimens . 5
6 Conditioning . 6
7 Procedure . 6
8 Repeatability . 6
9 Test report . 6
Annex A (informative) Comparison of VST results obtained with heating bath and direct-contact
heating unit . 8
Annex B (informative) Repeatability . 10
©
ISO 2004 – All rights reserved iii
---------------------- Page: 7 ----------------------
SIST EN ISO 306:2004
ISO 306:2004(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards 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 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 given 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 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.
ISO306 was prepared by Technical Committee ISO/TC61, Plastics, Subcommittee SC2, Mechanical
properties.
This fourth edition cancels and replaces the third edition (ISO 306:1994), which has been technically revised to
address new equipment designs in which the specimen is not heated in a liquid bath but by direct contact with,
for instance, a hot metal block. The oven used as one of the possible items of heating equipment in
ISO 306:1994 is no longer included.
©
iv ISO 2004 – All rights reserved
---------------------- Page: 8 ----------------------
SIST EN ISO 306:2004
INTERNATIONAL STANDARD ISO 306:2004(E)
Plastics — Thermoplastic materials — Determination of Vicat
softening temperature (VST)
1Scope
1.1 This International Standard specifies four methods for the determination of the Vicat softening
temperature (VST) of thermoplastic materials:
◦
— Method A50 using a force of 10 N and a heating rate of 50 C/h
◦
— Method B50 using a force of 50 N and a heating rate of 50 C/h
◦
— Method A120 using a force of 10 N and a heating rate of 120 C/h
◦
— Method B120 using a force of 50 N and a heating rate of 120 C/h.
1.2 The methods specified are applicable only to thermoplastics, for which they give a measure of the
temperature at which the thermoplastics start to soften rapidly.
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 latest edition of the referenced document
(including any amendments) applies.
ISO 291, Plastics — Standard atmospheres for conditioning and testing
ISO 293, Plastics — Compression moulding of test specimens of thermoplastic materials
ISO 294-1, Plastics — Injection moulding of test specimens of thermoplastic materials — Part 1: General
principles, and moulding of multipurpose and bar test specimens
ISO 294-2, Plastics — Injection moulding of test specimens of thermoplastic materials — Part 2: Small tensile
bars
ISO 294-3, Plastics — Injection moulding of test specimens of thermoplastic materials — Part 3: Small plates
ISO 2818, Plastics — Preparation of test specimens by machining
ISO 3167, Plastics — Multipurpose test specimens
3 Principle
The temperature at which a standard indenting tip with a flat point penetrates 1mm into the surface of a plastic
test specimen is determined. The indenting tip exerts a specified force perpendicular to the test specimen, while
the specimen is heated at a specified and uniform rate.
The temperature, in degrees Celsius, of the specimen, measured as close as possible to the indented area at
1mm penetration, is quoted as the VST.
©
ISO 2004 – All rights reserved 1
---------------------- Page: 9 ----------------------
SIST EN ISO 306:2004
ISO 306:2004(E)
4 Apparatus
The apparatus consists essentially of the following:
4.1 Rod, provided with a weight-carrying plate or other suitable load-applying device (see 4.4), held in a
rigid metal frame in a liquid-filled bath or direct-contact heating unit so that it can move freely in the
vertical direction. In either case, the base of the frame supports the test specimen under the indenting tip at the
end of the rod (see Figures 1 and 2).
Unless the rod has the same linear thermal expansion coefficient as the rigid metal frame, the differential
change in the length of these parts introduces an error in the indentation readings. A blank test shall therefore
be carried out on each rod and frame assembly, using a test specimen made of rigid material having a known,
1)
low coefficient of expansion. The blank test shall cover the temperature range typical of the type of material to
◦
be tested. A correction factor shall be determined for at least each 10 C change in temperature, for each rod
and frame assembly. If the correction factor is 0,02 mm or greater near the VST for that material, its algebraic
sign shall be noted and the factor applied to each test result by adding it algebraically to the apparent
indentation reading. It is recommended that the apparatus be constructed of low thermal expansion material.
4.2 Indenting tip, preferably of hardened steel, 1,5 mm to 3 mm long, of circular cross-section, and of area
2 2
1,000 mm ± 0,015 mm (corresponding to an indenting-tip diameter of 1,128 mm± 0,008 mm), fixed at the
bottom of the rod (4.1). The surface of the indenting tip in contact with the specimen shall be plane and
perpendicular to the axis of the rod, and free from burrs.
4.3 Calibrated micrometer dial gauge (or other suitable measuring instrument), to measure to ± 0,01 mm
the penetration of the indenting tip into the test specimen. The thrust of the dial ga
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.