BS EN ISO 294-5:2013 - Plastics. Injection moulding of test specimens of thermoplastic materials. Preparation of standard specimens for investigating anisotropy

BS EN ISO 294-5:2013

Plastics. Injection moulding of test specimens of thermoplastic materials. Preparation of standard specimens for investigating anisotropy

Status : Superseded, Withdrawn   Published : May 2011 Replaced By : BS EN ISO 294-5:2017

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ISO 294-5:2011 specifies a two-cavity mould (designated the type F ISO mould) for the injection moulding of 80 mm x 90 mm plates with a preferred thickness of 2 mm for single-point data acquisition because 2 mm has been found to provide the maximum anisotropic properties, with only a slight sensitivity to the rate of injection. For the design of plastic parts, this will provide upper and lower bounds for the tensile properties. Matching the plate thickness to a given part thickness is not a suitable criterion because of the effect of mould filling rate and part geometry on anisotropy. Suitable test specimens [ISO 527?2 type 1BA tensile test specimens or type 1 (80 mm x 10 mm) bars] are then machined or die-cut from the plates and used to obtain information on the anisotropy of thermoplastic parts. Investigation of the anisotropy of materials is a special procedure intended to provide guidance in the design of mouldings for end-use applications and is not intended as a quality control tool. In the injection moulding of thermoplastic materials, the flow of molten polymer may influence the orientation of fillers such as fibreglass or the orientation of polymer chains. This can result in anisotropic behaviour. The knowledge of anisotropic behaviour is valuable in designing plastic parts.




Standard NumberBS EN ISO 294-5:2013
TitlePlastics. Injection moulding of test specimens of thermoplastic materials. Preparation of standard specimens for investigating anisotropy
StatusSuperseded, Withdrawn
Publication Date31 May 2011
Withdrawn Date11 January 2018
Normative References(Required to achieve compliance to this standard)ISO 294-1:1996, ISO 527-2
Informative References(Provided for Information)No other standards are informatively referenced
Replaced ByBS EN ISO 294-5:2017
International RelationshipsEN ISO 294-5:2013,ISO 294-5
Amended ByCorrigendum, June 2013
DescriptorsInjection moulding, Moulded materials, Moulding (process), Polymers, Plastics, Specimen preparation, Thermoplastic polymers, Anisotropy, Plastics and rubber technology, Test specimens
ICS83.080.20
Title in FrenchPlastiques. Moulage par injection des éprouvettes de matériaux thermoplastiques. Préparation d'éprouvettes normalisées pour déterminer l'anisotropie
Title in GermanKunststoffe. Spritzgießen von Probekörpern aus Thermoplasten. Herstellung von Standardprobekörpern zur Ermittlung der Anisotropie
CommitteePRI/82
ISBN978 0 580 78952 6
PublisherBSI
FormatA4
DeliveryYes
Pages16
File Size317 KB
Price£130.00


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