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Nam Kyeun Kim

Bio: Nam Kyeun Kim is an academic researcher from University of Auckland. The author has contributed to research in topics: Flammability & Fire retardant. The author has an hindex of 16, co-authored 35 publications receiving 644 citations.

Papers
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Journal ArticleDOI
TL;DR: In this article, a review of research on thermal behaviour and flammability of natural fibres, such as cellulose and protein based fibres and polymers along with composites filled with these materials is provided.

110 citations

Journal ArticleDOI
TL;DR: In this paper, the effect of wool on improving fire retardancy of polypropylene (PP) composite has been identified by some preliminary flammability tests, and Wool characteristics within the extruded composites, namely fiber length, orientation and fracture behaviour, were also investigated by image analysis to find out their influence on the improvement of mechanical properties.
Abstract: Polypropylene (PP) and wool composite sheets were fabricated by continuous extrusion. Increases in mechanical properties of the composites, such as tensile modulus and strength, were achieved by adding wool and a suitable compatibiliser. Significant manufacturing parameters and desired formulations of the wool–PP composites to achieve the best possible mechanical properties were determined by Taguchi analysis. Wool characteristics within the extruded composites, namely fibre length, orientation and fracture behaviour, were also investigated by image analysis to find out their influence on the improvement of mechanical properties. Furthermore, positive effect of wool on improving fire retardancy of the composite has been identified by some preliminary flammability tests.

78 citations

Journal ArticleDOI
TL;DR: In this article, composites were manufactured with biochar and wool in conjunction with the halogen free flame retardant, followed by their characterisation through cone calorimeter, limiting oxygen index (LOI), thermogravimetry, tension/flexural tests, and scanning electron microscopy (SEM).

74 citations

Journal ArticleDOI
TL;DR: In this paper, two nano-clays, halloysite nano-tube (HNT) and layered double hydroxide (LDH), were employed to compare fire and mechanical properties of epoxy composites based on ammonium polyphosphate (APP) and each of the two nanoclays.
Abstract: In this research, two nano-clays, halloysite nano-tube (HNT) and layered double hydroxide (LDH), were employed to compare fire and mechanical properties of epoxy composites based on ammonium polyphosphate (APP) and each of the two nano-clays. The results showed that the combination of APP and nano-clay achieved a significant reduction (approx. 87%) in peak heat release rate of epoxy resin. The comparative analysis also demonstrated that the total heat release of the composite including HNT was approx. 18% lower than that of the LDH based composite. Moreover, HNT generated higher tensile properties in the composite. Overall, the HNT (∼1.5 USD/kg) is a more cost-effective nano-clay than LDH (∼180 USD/kg) to effectively improve the fire resistance and maintain the mechanical properties of epoxy composites.

68 citations

Journal ArticleDOI
TL;DR: In this paper, a single-screw extruder, attached with a flat die, has been used to successfully produce continuous wool-polypropylene (PP) composite sheets, and the significant roles of nitrogen content of APP and the talc in forming the effective char to increase the composites' fire retardancy have been identified through cone calorimeter tests.

60 citations


Cited by
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Journal ArticleDOI
TL;DR: In this paper, a brief outline of work that covers in the area of biocomposites, major class of biodegradable polymers, natural fibres, as well as their manufacturing techniques and properties has been highlighted.
Abstract: The growing ecological and environmental consciousness has driven efforts for development of new innovative materials for various end-use applications. Polymers synthesized from natural resources, have gained considerable research interest in the recent years. This review paper is intended to provide a brief outline of work that covers in the area of biocomposites, major class of biodegradable polymers, natural fibres, as well as their manufacturing techniques and properties has been highlighted. Various surface modification methods were incorporated to improve the fibre–matrix adhesion resulting in the enhancement of mechanical properties of the biocomposites. Moreover, an economical impact and future direction of these materials has been critically reviewed. This review concludes that the biocomposites form one of the emerging areas in polymer science that gain attention for use in various applications ranging from automobile to the building industries.

894 citations

Journal ArticleDOI
TL;DR: In this article, a perspective review presents the advancement in the processing techniques, characterizations, future scope and methods to overcome the limitations in biofibers, biopolymers, biofilms, and bio composites.

405 citations

Journal ArticleDOI
TL;DR: In this paper, the effects of waste materials, residues or process by-products of multiple types on NFPCs are evaluated and their potential as NFPC constituents is evaluated, and a new trend of utilizing waste, residues, and process byproducts in natural fiber-polymer composites (NFPCs) as additives or reinforcements may bring considerable enhancements in the properties of NFPC in a sustainable and resilient manner.

347 citations

01 Jan 2016
TL;DR: The sfpe handbook of fire protection engineering is universally compatible with any devices to read and is available in the authors' digital library an online access to it is set as public so you can download it instantly.
Abstract: Thank you very much for downloading sfpe handbook of fire protection engineering. Maybe you have knowledge that, people have look numerous times for their favorite books like this sfpe handbook of fire protection engineering, but end up in infectious downloads. Rather than enjoying a good book with a cup of coffee in the afternoon, instead they juggled with some malicious bugs inside their laptop. sfpe handbook of fire protection engineering is available in our digital library an online access to it is set as public so you can download it instantly. Our digital library saves in multiple locations, allowing you to get the most less latency time to download any of our books like this one. Merely said, the sfpe handbook of fire protection engineering is universally compatible with any devices to read.

334 citations

Journal ArticleDOI
TL;DR: In this paper, a review of different types of natural fibers, their characteristics and properties enabling them to be used as reinforcing agents in different polymers is presented. And the use of different additive manufacturing technologies in processing polymer composites is also discussed.
Abstract: Throughout the world there have been alarming concerns over the use of nonrenewable resources during manufacturing of goods and associated environmental legislations. Therefore, the use of natural materials and fabrication of composites therefrom, particularly, development of natural fiber reinforced polymer composites is gaining significant attention. Although natural fiber reinforced composites (NFRCs) show strong application prospects, various materials and processing related challenges needs to be addressed to achieve long-term stability and performance. In this review, we attempted to provide an overview of different types of natural fibers, their characteristics and properties enabling them to be used as reinforcing agents in different polymers. Then the unique requirement of fiber surface modification to achieve enhanced fiber-matrix bonding is discussed. The article also discusses conventional processing routes and critical issues associated with NFRCs processing. The use of different additive manufacturing (AM) technologies in processing polymer composites is also discussed. At the end, we have critically analyzed the challenges and opportunities associated with AM of NFRCs.

285 citations