Naslov
Effect of nanofillers on mechanical properties and flammability of HDPE/wood composites

Autori
Zvonimir Katančić, Ljerka Kratofil Krehula, Zlata Hrnjak-Murgić

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
POLYCHAR 20 World Forum on Advanced Materials Book of Abstracts / Rogošić, Marko ; Macan, Jelena - Zagreb : Fakultet kemijskog inženjerstva i tehnologije Sveučilišta u Zagrebu, 2012, 276-276

ISBN
978-953-6470-57-0

Skup
POLYCHAR 20 World Forum on Advanced Materials

Mjesto i datum
Dubrovnik, Hrvatska, 26.03.2012. - 30.03.2012

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
wood plastic composites; HDPE; nanofiller

Sažetak
Wood–plastic composites (WPC) combine the best properties of the neat components and can show outstanding performance. When comparing with potential traditional competitors, one find that WPCs offer better thermal isolation, better weather durability and lower maintenance than wood. Moreover, in contrast to plastics, they offer an appearance rather similar to that of wood. In comparison to other fibrous materials, wood fibers are in general suitable to reinforce plastics due to relative high strength and stiffness, low cost, low density, low CO2 emission and biodegradability. Due to all the advantages they offer, WPCs are experiencing tremendous growth in consumer, automotive and construction applications. Although widely commercialized, they are mainly used in semi structural applications because they do not possess the bending strength and modulus load-bearing structural application unlike the solid wood. Fire behaviour is another key point because modern safety issues demand fire resistant materials particularly materials used in constructions. Polyolefins, usual polymers employed in WPCs, burn and drip in case of fire leading to a very risky scenario. Thus, fire retardant agents are employed in order to improve fire behaviour and addition of nanofillers to upgrade mechanical properties. The objective of this study was to investigate the effect of two different types of nanofillers (CaCO3 and SiO2) on mechanical properties of WPCs and two different types of fire retardants (ammonium polyphosphate and Al(OH)3) on their fire performance. For this purpose high density polyethylene/wood composites were prepared by extrusion process. Mechanical properties and morphology were characterized by dynamical-mechanical analysis (DMA) and scanning electron microscopy (SEM) while micro cone calorimeter and thermogravimetric analysis (TGA) were utilized to test thermal and fire properties. Results show the improvement in fire performance due to presence of fire retardant as well as changes in mechanical behaviour due to the added nanofillers.

Izvorni jezik
Engleski

Znanstvena područja
Kemijsko inženjerstvo

POVEZANOST RADA