Dynamic Mechanical Properties and Free Vibration Characteristics of Surface Modified Jute Fiber/Nano-Clay Reinforced Epo
- PDF / 3,123,029 Bytes
- 13 Pages / 595.276 x 790.866 pts Page_size
- 97 Downloads / 259 Views
ORIGINAL PAPER
Dynamic Mechanical Properties and Free Vibration Characteristics of Surface Modified Jute Fiber/Nano-Clay Reinforced Epoxy Composites S. Ramakrishnan1 · K. Krishnamurthy2 · G. Rajeshkumar3 · M. Asim4 Accepted: 20 October 2020 © Springer Science+Business Media, LLC, part of Springer Nature 2020
Abstract Untreated and treated jute fiber and nano-clay in various ratios were used to fabricate jute/nano-clay/epoxy hybrid composites through compression molding method. The dynamic mechanical and free vibration behaviours were evaluated by varying the concentration of NaOH (2.5%, 5% and 7.5%) and wt.% of nano-clay (1, 3, 5 and 7 wt.%). Experimental outcomes disclosed that the storage and loss modulus, damping factor and natural frequency are influenced by concentration of NaOH solution and nano-clay content. A positive shift (towards higher temperature) in glass transition temperature and enhanced natural frequency of the composites after NaOH treatment and nano-clay addition confirmed that superior interfacial bonding exists between the jute fibers and epoxy matrix. Finally, the composites incorporated with 5% treated fiber and 5 wt.% of nano-clay is suggested for low strength structural applications in construction and automobile industries. Keywords Jute · Nano-clay · Damping factor · Free vibration · Chemical treatment
Introduction Over recent years, the natural fibers are utilized as reinforcement material to produce biodegradable polymer composites for diverse industrial applications have gained interest due to their advantage from economic perspective to overcome the increasing environmental impact owing to the usage of artificial/synthetic reinforcements [1]. This attracted engineers, material scientists and technocrats’ attention to use such fibers for wide variety of applications [2]. Among many lignocellulosic fibers, jute is a familiar fiber growing in India, China, Bangladesh, Thailand and Nepal. These countries * G. Rajeshkumar [email protected] 1
Department of Mechanical Engineering, Kongu Engineering College, Erode, Tamilnadu, India
2
Department of Mechatronics Engineering, Kongu Engineering College, Erode, Tamilnadu, India
3
Department of Mechanical Engineering, PSG Institute of Technology and Applied Research, Coimbatore, Tamilnadu, India
4
Institute of Tropical Forestry and Forest Products (INTROP), Universiti Putra Malaysia, Serdang, Selangor, Malaysia
together produce around 95% of the universal production of jute fibers and it finds its application in construction, marine, aerospace and automotive sectors [3]. Literature revealed that the jute fiber has been widely employed as reinforcement for both thermoset (epoxy resin, vinyl ester resin and polyester etc.) and thermoplastic (polypropylene, polylactic acid and polyethylene etc.) polymers to improve their static and dynamic properties [4–8]. Ramakrishnan et al. [9] fabricated jute/epoxy composites by means of compression molding method and investigated its mechanical properties. The outcomes disclosed
Data Loading...
