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Title: Colemanite: a fire retardant candidate for wood plastic composites

Source: BioResources. 13(1): 1491-1509.

Author(s)Terzi, Evren; Kartal, Saip Nami; Piskin, Sabriye; Stark, Nicole; Figen, Aysel Kanturk; White, Robert H.

Publication Year: 2018  View PDF »

Category: Journal Articles
Associated Research Project(s):   FPL-4706-2B

Abstract: The use of raw boron minerals (i.e. tincalconite, colemanite, and ulexite) was evaluated to increase the fire performance of wood plastic composites (WPCs) in comparison with commercially available fire retardants (FRs). Cone calorimetry and limited oxygen index tests were performed to evaluate the fire properties of WPC specimens. Artificial weathering and 3-point bending tests were also performed on the test specimens loadedwith the highest loading level of FRs. The most important decrease in theheat release rate values was 42% and 40% in the magnesium hydroxide- and colemanite-added WPCs at a loading level of 15% (w/w), respectively.Incorporation of colemanite and ulexite into the WPCs increased thelimited oxygen index levels by nearly 13% at the same loading level. Anincrease was observed in the peak heat release rate values in all of theWPC specimens after accelerated weathering. All of the FRs hadstatistically improved MOE values compared with the control WPCspecimens. In particular, the incorporation of zinc borate and boraxincreased the MOE values by approximately 48% and 42%, respectively.Similar to the effect on the MOE values, zinc borate and borax improvedthe modulus of rupture the most (approximately 18%).

Keywords: WPC; raw boron materials; cone calorimeter; limited oxygen index; artificial weathering

Publication Review Process: Formally Refereed

File size: 2,048 kb(s)

Date posted: 04/17/2018

This publication is also viewable on Treesearch:  view
RITS Product ID: 89985
Current FPL Scientist associated with this product
Stark, Nicole M.
Research Chemical Engineer

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