Volume 04 Issue 02
Flame Retardancy of Polymeric Materials with Graphene Nanoparticles: A Review
Jerry Varghese, Amalgeeth Poliyath, Surej Rajan C | pp: 01-05 | Purchase PDF
Abstract: Polymer nanocomposite fire retardancy has turned into a fundamental parameter in modern material application. Late understanding has demonstrated the eco-compliancy of graphene nanoparticles as fire retardants when consolidated into polymer nanocomposites (PNCs). The carbonaceous nanofillers, for example, graphene and graphene oxide assume competent role because of exceptional structural and functional properties having a broad scope of specialized applications. Based on their structural network pattern that determines unique mechanical, electrical and thermal properties. Expanding the amounts of graphene nanoparticles have displayed the capacity to repress basic fundamentally combustibility parameters like Heat release rate (HRR), peak HRR (PHRR), percentage of carbon monoxide generation, smoke production rate and total mass loss rate while at the same time increasing limiting oxygen index, time of ignition moreover, absolute PHRR, in this way hindering combustibility and making better opportunity to reduce loss and causality, all things considered, fire circumstance through the development of even layers of carbonaceous char in the dense stage prepared to do proficiently suppressing the thermal deterioration brought about by oxygen and heat to the polymer network and removing the flaring way. This review strongly emphasize on the flame retardancy mechanism and the effect of combustibility parameters with graphene nanoparticles filled polymer composites.
Experimental Study of Refrigeration Cycle Using Diffuser Pipe and Application of Nano Particles
Anto Zacharias, Abin Paul | pp: 06-08 | Purchase PDF
Abstract: Refrigeration is the process of removing heat from a low temperature reservoir. The refrigeration system use liquid refrigerant as the medium which absorbs heat from the space to be cooled. Then it reaches compressor, where it is compressed to high pressure resulting in a high temperature as well. This refrigerant is then passed through the condenser and then through expansion valve, resulted decrease in temperature and pressure, then reaches the evaporator and cycle continued. This paper was experimental investigation and provide proof that COP of a refrigerator is increased by installing the diffuser in the inlet of the compressor and by adding nano particles in to the refrigerant of the system.