Investigation on Effect of Cryogenic Temperature on Mechanical Behavior of Jute and Hemp Fibers Reinforced Polymer Composites

Abstract

In past few decades, natural fibers which are viable and abundant in nature are the emerging trends in material science as reinforcement for polymer matrix materials and they are the commute for the non-biodegradable, non-renewable and high-density synthetic fibers. Plant-based fibers such as banana, hemp, kenaf, PALF, jute, and coir has been used as reinforcement in a polymer matrix for the applications in consumer goods, furniture’s, civil and automotive structures and low-cost housing structures. The natural fibers used in this study are Hemp and Jute fibers which are finding increasing in the composite material as reinforcements. The main objective of the current work is to examine the mechanical properties of hybrid fibers (hemp and jute) reinforced epoxy composites under room temperature and at cryogenic temperature. From this study, it is clear that tensile, flexural and impact properties of polymer composites are greatly influenced by cryogenic temperature and its properties vary with respect to the extent of cryogenic treatment. The specimens are immersed in liquid nitrogen for the duration of 15, 30, 45 and 60mins and later it is subjected for tensile, flexural and impact properties. The maximum tensile strength of 21.13MPa, flexural strength of 51.95MPa and Impact strength of 8.935kJ/m2 is obtained for an untreated specimen and its value start to decrease as curing time increases. At cryogenic temperature, the material comes harder and loses its ductile property and become brittle due differ in thermal expansion coefficient of matrix and fiber material

Hemp and Its Derivatives as a Universal Industrial Raw Material (with Particular Emphasis on the Polymer Industry)—A Review

“…They showed that hemp/epoxy composites could compete with glass/epoxy composites. The covers for ultra-light airplanes produced for the purpose of the tests showed very good properties and, at the same time, greater environmental friendliness [ 134 ]. As indicated by previous research and theory, natural fibers require some modification to improve compatibility with the polymer matrix.…”

Pengaruh Temperatur Rendah pada Sifat Bending dari Pipa Komposit Epoxy dengan Penguatan Serat Jute

“…Hal ini juga dibuktikan dengan bentuk patahan benda kerja seperti ditunjukkan pada Gambar 6. Dari hasil yang dicapai juga disampaikan senada dalam penelitian yang dilakukan oleh [29][30][31][32] , dimana dijelaskan bahwa temperatur besar pengaruhnya terhadap sifat bending dari material komposit baik berbahan dasar serat organic maupun serat inorganic [33] . Keunggulan dari treatment pada low temperature juga meningkatkan interfacial bending strength sebesar 31%.…”

Investigations of thermo-mechanical properties of cryogenic and dual alkali-anhydrous treated hemp fibre and its composites

“…24 In general, physicochemical/thermal treatments on the composites create micro-cracking on its surface, making it more susceptible to moisture and brittle failure. 25…”

“…24 In general, physicochemical/thermal treatments on the composites create micro-cracking on its surface, making it more susceptible to moisture and brittle failure. 25 There is a dearth of research on the cryogenic treatment of natural fibres before the consolidation of composite and its impact on fibres characteristics and behaviour of subsequently fabricated composites. This investigation deals with the cryogenic treatment of hemp fibres before the consolidation of composites, its influence on fibre characteristics and subsequently fabricated composites with treated fibres.…”