Polypropylene Crystallisation in the Presence of Inorganic Additives

• Autorzy: Ujhelyiová Anna , Horbanová Ľuba , Petková Mária , Ryba Jozef , Annus Július

Identyfikatory

DOI

10.5604/01.3001.0012.9984

Warianty tytułu

PL

Krystalizacja polipropylenu w obecności dodatków nieorganicznych

• Języki publikacji: EN

Abstrakty

EN

The physical modification of polypropylene (PP) fibres with inorganic additives ensures more intense anchoring of PP fibres in constructional composites, which leads to great improvement of the function of PP fibres in relation to the transmission and absorption of deformation energy in the formation and loading of composites. This work focuses on the preparation of PP fibres modified with untreated and treated CaCO₃ and SiO₂ for constructional composites. It investigated the effect of inorganic additives on the thermal, thermo-mechanical and sorption properties of these fibres. Melting and crystallisation temperatures as well as the melting and crystallisation enthalpies of PP and modified PP fibres depend on the additives and conditions of preparation of PP fibres applied. A lower amount of inorganic additives improves and a higher amount of inorganic additives worsened the dimensional stability of the PP fibres observed. The addition of inorganic fillers increased the water vapour sorption of the modified PP fibres in comparison with the pure PP fibre.

PL

Fizyczna modyfikacja włókien polipropylenowych (PP) za pomocą nieorganicznych dodatków zapewnia bardziej intensywne umocowanie włókien PP w kompozytach konstrukcyjnych, co powoduje znaczną poprawę funkcji włókien PP w stosunku do przenoszenia i absorpcji energii odkształcenia i obciążenia kompozytów. Przeprowadzone prace koncentrowały się na przygotowaniu włókien PP modyfikowanych nieoczyszczonymi i poddanymi obróbce CaCO₃ i SiO₂ do zastosowania w kompozytach konstrukcyjnych. Zbadano wpływ nieorganicznych dodatków na właściwości termiczne, termo-mechaniczne i sorpcyjne włókien. Stwierdzono, ze temperatury topnienia i krystalizacji oraz entalpie topnienia i krystalizacji PP i modyfikowanych włókien PP są zależne od dodatków i warunków wytwarzania włókien PP. Mniejsza ilość nieorganicznych dodatków poprawia, a większa ilość pogarsza stabilność wymiarową obserwowanych włókien PP. Dodatek nieorganicznych wypełniaczy zwiększył sorpcję pary wodnej modyfikowanych włókien PP w porównaniu z czystymi włóknami PP.

Słowa kluczowe

EN

polypropylene fibre; PP; inorganic additives; modification; crystallisation

PL

włókna polipropylenowe; PP; dodatki nieorganiczne; modyfikacja; krystalizacja

• Wydawca: Sieć Badawcza Łukasiewicz - Łódzki Instytut Technologiczny
• Czasopismo: Fibres & Textiles in Eastern Europe
• Rocznik: 2019
• Tom: Vol. 27, no. 2 (134)
• Strony: 30--38
• Opis fizyczny: Bibliogr. 39 poz., rys., tab.

Twórcy

autor

Ujhelyiová Anna

• Slovak University of Technology in Bratislava, Faculty of Chemical and Food Technology, Institute of Natural and Synthetic Polymers, Department of Plastics, Rubber and Fibres, Radlinského 9, 812 37 Bratislava, Slovak Republic

autor

Horbanová Ľuba

• Slovak University of Technology in Bratislava, Faculty of Chemical and Food Technology, Institute of Natural and Synthetic Polymers, Department of Plastics, Rubber and Fibres, Radlinského 9, 812 37 Bratislava, Slovak Republic

autor

Petková Mária

• Slovak University of Technology in Bratislava, Faculty of Chemical and Food Technology, Institute of Natural and Synthetic Polymers, Department of Plastics, Rubber and Fibres, Radlinského 9, 812 37 Bratislava, Slovak Republic

autor

Ryba Jozef

• Slovak University of Technology in Bratislava, Faculty of Chemical and Food Technology, Institute of Natural and Synthetic Polymers, Department of Plastics, Rubber and Fibres, Radlinského 9, 812 37 Bratislava, Slovak Republic

autor

Annus Július

• Slovak University of Technology in Bratislava, Faculty of Chemical and Food Technology, Institute of Natural and Synthetic Polymers, Department of Plastics, Rubber and Fibres, Radlinského 9, 812 37 Bratislava, Slovak Republic

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Uwagi

PL

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2019).