Structure of gas-assisted injection moulded parts

• Autorzy: Stachowiak T. , Jaruga T.
• Języki publikacji: EN

Abstrakty

EN

Purpose: The purpose of this research was evaluation of the structure in the cross-section of gas-assisted injection moulded parts. The parts investigated were stroller handles made from polypropylene. Design/methodology/approach: Polymer structure was observed in the cross-section using the optical microscope. The microtomed slices cut from the manufactured parts were observed in polarized light. The parts obtained with different injection moulding temperature values were tested. Findings: was found that spherulites size differs in the cross section. A big gradient of spherulites is observed in the area near the skin while the spherulites contacting the gas channel are of similar size - like those in the part centre. Research limitations/implications: The investigation is limited to semi-crystalline polymers, like polypropylene. In case of amorphous polymers spherulitic structure does not occur. Practical implications: The investigation results can contribute to the improvement of the knowledge about gas-assisted injection moulding and can also be helpful in selection of proper injection moulding parameters, in order to obtain good polymer structure in the part. Originality/value: Gas-assisted injection moulding is a non-conventional manufacturing process. Investigation in this field is not so common like in conventional injection moulding that has much longer history.

Słowa kluczowe

EN

engineering polymer; gas assisted injection moulding; spherulite

PL

polimer inżynierski; formowanie wtryskowe w osłonie gazowej; sferolit

• Wydawca: International OCSCO World Press
• Czasopismo: Journal of Achievements in Materials and Manufacturing Engineering
• Rocznik: 2010
• Tom: Vol. 38, nr 2
• Strony: 139--145
• Opis fizyczny: Bibliogr. 26 poz., rys., tabl.

Twórcy

autor

Stachowiak T.

autor

Jaruga T.

• Department of Polymer Processing and Production Management, Czestochowa University of Technology, Al. Armii Krajowej 19c, 42-200 Częstochowa, Poland,

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