Alfa fiber-polyurethane composite as a thermal and acoustic insulation material for building applications

Sair, Said; Mansouri, Said; Tanane, Omar; Abboud, Y.; Bouari, Abdeslam El

doi:10.1007/s42452-019-0685-z

Cited by 43 publications

(17 citation statements)

References 60 publications

(67 reference statements)

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“…Another study on alpha fiber-reinforced polyurethane composite reported that 10% of alkali treatment for 5 hours improved its water absorption, mechanical and interfacial properties. It's acoustic property revealed that alkali-treated alfa fibers reinforced polyurethane composite exhibited better sound absorption coefficient and was directly proportional to increase in fiber percentage, which is due to increase in the interconnections of enlarged cell wall structure of fibers with respect to increase in fiber content [11]. Sumesh et al investigated the influence of alkali treated sisal/coir reinforcements on epoxy composites and found NaOH treated fibers enhanced the mechanical properties [12].…”

Section: Introductionmentioning

confidence: 99%

Effect of alkali treatment on performance characterization of Ziziphus mauritiana fiber and its epoxy composites

Vinod

Vijay

Singaravelu

et al. 2020

Journal of Industrial Textiles

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This study aims to investigate the natural cellulosic fibers extracted from novel Ziziphus Mauritiana plants. The fibers were treated with alkali solution and epoxy composites were developed for both untreated and chemically modified fibers through hand lay-up process. Physico-chemical and thermomechanical characterization were carried for both untreated and alkali treated Ziziphus Mauritiana fibers through physical analysis, chemical analysis, Thermogravimetric analysis, Fourier transform infrared spectroscopy, X-Ray diffraction test and single fiber tensile test. The alkali treatment facilitates to remove amorphous constituents and improves the crystalline index by 1.31 times, thermal stability by 1.15 times and fiber strength by 1.44 times, which is supported by chemical analysis and Fourier transform infrared spectroscopy analysis. Later, developed Ziziphus Mauritiana composites were analyzed as per ASTM for its mechanical and sound absorption characteristics. The reduction in amorphous constituents after chemical treatment improved the surface roughness in alkali-treated Ziziphus Mauritiana fibers which influenced the bonding behavior. Also it improved the ultimate tensile strength by 2.12 times, flexural strength by 1.38 times and sound absorption coefficient by 1.15 times. Thus, the Ziziphus Mauritiana fibers are potentially suitable for use in lightweight structures.

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Section: Introductionmentioning

confidence: 99%

Effect of alkali treatment on performance characterization of Ziziphus mauritiana fiber and its epoxy composites

Vinod

Vijay

Singaravelu

et al. 2020

Journal of Industrial Textiles

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“…Using these results, the best-fit coefficients for reasonable prediction of the sound-absorption performance by means of simple empirical formulae are reported. Although some authors have recently explored the inclusion of esparto in biocomposites [41] and reported measurements of its sound-absorbing performance [42], to the best of the authors' knowledge, a sound absorption empirical prediction model for this kind of fiber has not been previously presented.…”

Section: Empirical Model For Fibrous Sound-absorbing Materialsmentioning

confidence: 99%

Sound-Absorption Properties of Materials Made of Esparto Grass Fibers

Arenas¹,

Tormos

Fernández

et al. 2020

Sustainability

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Research on sound-absorbing materials made of natural fibers is an emerging area in sustainable materials. In this communication, the use of raw esparto grass as an environmentally friendly sound-absorbing material is explored. Measurements of the normal-incidence sound-absorption coefficient and airflow resistivity of three different types of esparto from different countries are presented. In addition, the best-fit coefficients for reasonable prediction of the sound-absorption performance by means of simple empirical formulae are reported. These formulae require only knowledge of the airflow resistivity of the fibrous material. The results presented in this paper are an addition to the characterization of available natural fibers to be used as alternatives to synthetic ones in the manufacturing of sound-absorbing materials.

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“…Natural waste have been widely used due to their inherent properties such as bio-degradability, renewability and their abundant availability, in addition to their light weight, carbon neutral and cost competitiveness. (Thyavihalli Girijappa et al 2019) , (Guna et al 2019) It was reported that the natural brous materials compete with synthetic materials with effective sound absorbing behaviour viz., barley straw, (Liuzzi et al 2020) ux, (Sair et al 2019) cotton, (He et al 2018) saw dust, (Bansod et al 2016) rice husk, (Taban et al 2019) hemp, (Liao et al 2020) palm, (Mohammed et al 2018) , (Belakroum et al 2017) kenaf, (Ismail et al 2019) corn, (Sari et al 2017) , (Binici et al 2016) paddy, (Marques et al 2020) sisal, (Tholkappiyana et al 2015) banana, (Singh and Mukhopadhyay 2020) and cork. (Trematerra and Lombardi 2017) Further, natural ber reinforced polymer composites have also received a lot of attention due to their lightweight, bio-degradable nature, eco-friendly nature.…”

Section: Introductionmentioning

confidence: 99%

Rice husk and saw dust reinforced hybridized blends of bio-benzoxazine/epoxy based composites: Thermal, Mechanical, and Acoustic Absorption Properties

Arumugam

Krishnasamy

Dilip

et al. 2021

Preprint

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The prime objective of the present work is to develop bio-wastes (rice husk and saw dust) reinforced composites with varying weight percentages composition of hybridized blend made from bio-based cardanol-melamine, cardanol-aniline benzoxazine and epoxy resin (bio-benzoxazine : epoxy resin 0:100 and 50:50 wt%)for acoustic proof applications. The breakthrough achieved in the present work is the cardanol benzoxazine is made in the form of hybrid matrix with epoxy resin, which cures significantly at lower temperature of 1050C in the absence of any curatives and also cures at room temperature in the presence of isophorone diamine curative,whereas the cardanol-melamine and cardanol-aniline based benzoxazines cure at very high temperature of 221˚C and 275 ˚C respectively. The low temperature cure behaviour achieved in the present work facilitates the amenable fabrication of bio-composites using both low heat resistant bio-based reinforcements and high temperature cure bio-benzoxazines for making cost competitive green building materials. Cardanol-melamine (C-m) and cardanol-aniline (C-a) based benzoxazines were synthesised using cardanol separately with melamine (m) and aniline (a) in the presence of paraformaldehyde under suitable experimental conditions. The benzoxazine (C-m and C-a) obtained was blended with varying weight percentages of bisphenol-A epoxy (DGEBA) resin separately followed by reinforcing with rice husk and saw dust and then cured at room temperature with stoichiometric quantity of isophorone diamine to obtain corresponding hybrid bio-composites. Mechanical properties (tensile strength, modulus, percentage elongation and hardness), thermal conductivity, thermal resistance, and sound absorption coefficient were studied as per standard methods. Results obtained from different studies infer that hybrid blended cardanol benzoxazine composite panels reinforced with rice husk and saw dust possess appreciable thermal, mechanical and acoustic properties. Data obtained from acoustic studies, it was observed that the highest value of sound absorption coefficient of 6400 Hz was noticed for composite specimens developed using both rice husk and saw dust reinforced with hybridized blend of bio-benzoxazine (50wt%) and epoxy resin (50wt%) and these hybrid composite panels can be used as sound absorption material in the ceiling and wall construction applications.

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Alfa fiber-polyurethane composite as a thermal and acoustic insulation material for building applications

Cited by 43 publications

References 60 publications

Effect of alkali treatment on performance characterization of Ziziphus mauritiana fiber and its epoxy composites

Effect of alkali treatment on performance characterization of Ziziphus mauritiana fiber and its epoxy composites

Sound-Absorption Properties of Materials Made of Esparto Grass Fibers

Rice husk and saw dust reinforced hybridized blends of bio-benzoxazine/epoxy based composites: Thermal, Mechanical, and Acoustic Absorption Properties

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