Some effects of multiple injection moulding on selected properties of ABS

• Autorzy: Żenkiewicz M. , Rytlewski P. , Moraczewski K. , Stepczyńska M. , Karasiewicz T. , Malinowski R. , Ostrowicki W.
• Języki publikacji: EN

Abstrakty

EN

Purpose: The purpose of this work was to investigate the influence of multiple (up to 10 times) injection moulding of acrylonitrile butadiene styrene (ABS) on some properties of the obtained moulded pieces. Design/methodology/approach: The investigated samples were obtained during the industrial injection moulding. There were determined the sample mechanical properties (by a tensile test), melt flow rate, temperatures of phase transitions (by differential scanning calorimetry, DSC), temperatures of thermal degradation (by thermogravimetric analysis, TGA), as well as storage modulus and damping coefficient (both by dynamic mechanical analysis, DMA). Findings: After the first injection mouldings, minor decreases (ca. 2.0 %) in the tensile strength were observed. After the next injection mouldings, this quantity did not change much. The melt flow rate increased along with the number of injection mouldings. The glass transition temperatures (from DSC) of butadiene and acrylonitrile styrene fractions don’t vary with the number of injection mouldings and are ca. 61 and +104şC, respectively. Research limitations/implications: In order to confirm that degradation process occurs in ABS during injection mouldings, further investigation is necessary, mostly that on variations in the mean molecular weight of ABS. Practical implications: The studies carried out by now indicate that there are no arguments not to subject the ABS technological waste to the management by material recycling. Originality/value: It has been observed that the largest changes in the tensile strength and melt flow rate of ABS occur during its first injection moulding and a melt flow rate increases slightly with the number of injection mouldings. The temperatures of phase transitions and thermal as well as the storage modulus and damping coefficient of ABS do not essentially change after repeated injection mouldings.

Słowa kluczowe

EN

engineering polymer; multiple injection moulding; recycling; mechanical properties; thermal properties

PL

polimer inżynierski; forma wtryskowa; recykling; właściwości mechaniczne; właściwości termiczne

• Wydawca: International OCSCO World Press
• Czasopismo: Journal of Achievements in Materials and Manufacturing Engineering
• Rocznik: 2009
• Tom: Vol. 37, nr 2
• Strony: 361--368
• Opis fizyczny: Bibliogr. 33 poz., rys., tabl.

Twórcy

autor

Żenkiewicz M.

autor

Rytlewski P.

autor

Moraczewski K.

autor

Stepczyńska M.

autor

Karasiewicz T.

autor

Malinowski R.

autor

Ostrowicki W.

• Institute for Engineering of Polymer Materials and Dyes, ul. M. Skłodowskiej-Curie 55, 87-100 Toruń, Poland,,

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