Accelerated weathering of fire-retarded wood–polypropylene composites

Turku, Irina; Kärki, Timo

doi:10.1016/j.compositesa.2015.11.028

Cited by 67 publications

(46 citation statements)

References 48 publications

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“…The presence of zinc oxide decreased surface degradation during weathering due to its capability to absorb UV radiation. Using accelerated weathering with xenon-arc light and water spray, the effect of weathering on the properties of PP-based co-extruded wood plastic composites (WPC) loaded with different fire retardant fillers, i.e., aluminium trihydrate (ATH), zinc borate (ZB), melamine, graphite (G) and titanium were studied by [153]. It was demonstrated that graphite was the best choice to protect the composite against light action.…”

Section: Biological Durabilitymentioning

confidence: 99%

Recent progress on natural fiber hybrid composites for advanced applications: A review

Mochane¹,

Mokhena²,

Mokhothu³

et al. 2019

Express Polym. Lett.

321

151

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Natural fibers, as replacement of engineered fibers, have been one of the most researched topics over the past years. This is due to their inherent properties, such as biodegradability, renewability and their abundant availability when compared to synthetic fibers. Synthetic fibers derived from finite resources (fossil fuels) and are thus, affected mainly by volatility oil prices and their accumulation in the environment and/or landfill sites as main drawbacks their mechanical properties and thermal properties surpass that of natural fibers. A combination of these fibers/fillers, as reinforcement of various polymeric materials, offers new opportunities to produce multifunctional materials and structures for advanced applications. This article intends to cover recent developments from 2013-up to date on hybrid composites, based on natural fibers with other fillers. Hybrid composites preparation and characterization towards their applicability in advanced applications and the current challenges are also presented.

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Section: Biological Durabilitymentioning

confidence: 99%

Recent progress on natural fiber hybrid composites for advanced applications: A review

Mochane¹,

Mokhena²,

Mokhothu³

et al. 2019

Express Polym. Lett.

321

151

View full text Add to dashboard Cite

show abstract

“…Polypropylene (PP) is one of the most widely used and fastest growing thermoplastics because of its several advantages in cost and performance. However, as an engineering material, PP has the poor weathering properties and is sensitive to heat, light, and oxidation, which limited its industrial application . Nowadays, WPCBP have been selected as a reinforcing filler in PP composites and the mechanical, thermal, and morphology of the composites are also evaluated .…”

Section: Introductionmentioning

confidence: 99%

Effects of decoppering pretreatment on accelerated weathering behaviors of waste printed circuit boards powders reinforced polypropylene composites

Tian

Luo

et al. 2019

J of Applied Polymer Sci

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Waste printed circuit boards powders (WPCBP), the critical by-products in the dispose process of waste electrical and electronic equipment, were selected as reinforcing fillers in polypropylene (PP) composites, which brought forward a new way to reuse WPCBP for a sustainable world. However, the multivalent metals in WPCBP could accelerate the degradation of PP molecule chains. In this study, nitric acid was selected as copper removal to pretreat WPCBP, and most of the metals were removed after decoppering pretreatment, which was evidenced by X-ray fluorescence (XRF). The ensuing compound was characterized by oxidation induction time, scanning electron microscopy, Fourier transform infrared spectroscopy, and mechanical analysis. As expected, the accelerate weathering behaviors of PP composite with nitric acid treated WPCBP were substantially improved, for instance, the notched impact strength and tensile strength of untreated PP/WPCBP composite after 21 days thermal aging were just 0.85KJ/m 2 and 9.3 MPa, while the PP composite with 6 wt % nitric acid-treated WPCBP was 3.47KJ/m 2 and 32.1 MPa. We envisage this facile strategy, that is, using proper concentration of nitric acid to pretreat WPCBP could improve the accelerate weathering properties of PP/WPCBP composites, which would broaden the potential applications of WPCBP in polymer compounds.

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“…1,2 Natural fiber/polyvinyl chloride (PVC) composites have many advantages, such as low water absorption (WA) and excellent humidity resistance. [3][4][5] However, in outdoor applications, these materials often face challenges from moisture, 6,7 fungi, 8,9 ultraviolet light, 10,11 xenon lamps, 12,13 seawater, and acid rain, 14,15 which attack the surfaces of materials. In addition, composites are often in direct contact with soil, meaning long soil aging can lead to the degradation of mechanical and thermal properties.…”

Section: Introductionmentioning

confidence: 99%

Effects of rice husk fibers on the properties of mixed-particle-size fiber-reinforced polyvinyl chloride composites under soil accelerated aging conditions

Wang

2019

Journal of Engineered Fibers and Fabrics

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In this article, rice husk fiber/polyvinyl chloride composites were prepared and analyzed. The optimal composition of mixed-particle-size fiber-reinforced composites was determined through orthogonal experimentation. The physical, mechanical, and thermal properties of the mixed-particle-size fiber-reinforced composites were compared to unprocessed (100 mesh) rice husk fiber/polyvinyl chloride composites. The surface microscopic appearances of the unprocessed and final composites were observed via laser microscope. Long-term accelerated soil aging caused micro-cracks to appear on the surfaces of the composites. Interfacial adhesion was observed via scanning electron microscopy. The results indicated that mixed-particle-size fibers can better fill interfacial gaps, leading to strong interfacial adhesion. Furthermore, the addition of mixed-particle-size fibers improves the soil aging resistance of composites. The hardness, flexural strength, impact strength, and first onset pyrolysis temperature (after 0 days) increase from 50 HRR, 35.2 MPa, 3.19 KJ/m2, and 258.5°C to 55 HRR, 39.4 MPa, 3.86 KJ/m2, and 261.2°C, respectively. However, the mass loss rate and thickness expansion rate (after 21 days) decrease from 2.9% and 0.79% to 2.21% and 0.74%, respectively. In general, the addition of mixed-particle-size fibers improves the ultimate properties of composites under soil aging conditions.

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Accelerated weathering of fire-retarded wood–polypropylene composites

Cited by 67 publications

References 48 publications

Recent progress on natural fiber hybrid composites for advanced applications: A review

Recent progress on natural fiber hybrid composites for advanced applications: A review

Effects of decoppering pretreatment on accelerated weathering behaviors of waste printed circuit boards powders reinforced polypropylene composites

Effects of rice husk fibers on the properties of mixed-particle-size fiber-reinforced polyvinyl chloride composites under soil accelerated aging conditions

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