International Journal of Innovative Technology and Exploring Engineering (IJITEE) ISSN: 2278-3075, Volume-8 Issue-10, August 2019 4695 Published By: Blue Eyes Intelligence Engineering & Sciences Publication Retrieval Number I8814078919/2019©BEIESP DOI: 10.35940/ijitee.I8814.0881019 Khaja Zaffer, Pulla Sammaiah Abstract: Polymer Nano composite in recent time has shown high improvement in mechanical, chemical and electrical properties. Granting all these, the use of polymer nano-composites has only recently begun starting explorer. In recent times, polymer materials has shown remarkable improvement in electrical insulation because of their numerous advantages in out-door insulation systems because of their negligible weight, better pollution performance, low cost, good dielectric properties with easy processing. In polymer materials, silicone rubber is one of the lead polymer currently used and has high ending properties like high voltage insulator, thermal stability, excellent UV resistance and hydrophobicity. Therefore, Silicone rubber with fillers can overcome few drawbacks such as low strength and insulating properties.Oxides with different properties can help silicone rubber to enhance its properties. Oxides such as alumina, zirconia are being widely used in silicone rubber. Alumina which has strong thermal conductive and compressive strength with good electrical is used in silicone rubber. Here Silicone rubber nano composites are prepared by incorporating Al 2 O 3 nano partic les. Electrical, Chemical properties like NaCl, HCl, and corrosion tests were conducted to know the performance of silicone rubber insulation at pollutant conditions. Dielectric tests were also done to know whether Al 2 O 3 has made any effect with silicone rubber. Tensile strength and Hardness test were carried out to determine mechanical strength of the rubber. Index Terms: silicone rubbers, aluminium oxide, electrical insulation, mechanical properties. I. INTRODUCTION The word silicone rubber ion was first proposed by Dumas in 1840. During 19 th century, Ladenburg experimentally produced silicone rubber by reacting diethoxydiethysilane with water and trace amounts of acids[1-2]. Dow chemical company first commercially produced it in 1941. Silicone rubber is a synthetic elastomer[3]. It is a cross-linked silicon based polymer also bonded with carbon, hydrogen and oxygen. Silicone can be distinguished from rubbers by atomic structure. It consists of a backbone of silicone atoms with alternating oxygen atoms. He recounted few additional compounds of the generic formula R2SiO2. These were swiftly identified as being and actually corresponding to polyialkylsiloxanes, with the formulation Revised Manuscript Received on August 05, 2019. Khaja zaffer, Mechanical Engineering Department, S.R Engineering College, warangal, India. Pulla Sammaiah, Mechanical Engineering Department, S.R Engineering College, warangal, India Where ‘R’ represents Methyl or Phenyl or Vinyl or Trifluoropropyl [4].Here “organic” groups are combined with “inorganic” as a backbone which makes properties of Silicone rubber unique. Because of Si-O bond attached to the polymer backbone, the polymer molecular weight and the polymer conformation are largely affected and these are remarkably greater and efficient than C-C bond. These Si-O bonds in silicone have greater stability and resistance to thermal and thermo oxidative resistance, greater hydrophobicity, flame retardant [5-7]. Radioactive particles and electromagnetic were very rarely attacked in “inorganic” silicones. This allows there use in different sectors like electrical insulation, aerospace, electronic and medical devices. With the use of different oxides and Nano Particles silicone can be used in different industries. Aluminium oxide has various properties such as wear-resistance, good thermal conductivity, excellent dielectric properties, high strength and stiffness. In this paper, silicone rubber is used with and without alumina as a filler, various insulation, chemical and mechanical tests were carried out[8-9]. In the upcoming days there would be huge demand for power and for transmitting high voltage power, transmitting lines should have good insulating properties, higher strength, excellent hydrophobicity and high tensile strength. Porcelin insulators are limited and can not be used at costal areas and withstand high temperature. Here, we demonstrated on how silicone rubber improved insulating, chemical and mechanical Properties II. EXPERIEMENTAL PROCEDURE Our Main aim was to create an identical sample which can be used at high voltage transmit line by using Liquid Silicone Rubber (LSR). The following are the properties of Liquid Silicone rubber. S.No Description Parameter 1 Apperance White 2 Hardness (A) 15 3 Viscocity (CPS 25Oc) 9500 4 Elongation break % >450 Table 1: specifications of Liquid Silicone Rubber 2.1 Procedure of making Silicone Rubber Spicemen from Liquid Silicone rubber Without Adding any Fillers. 1. Take G.I sheet of required dimension (100X1000X4thickness) mm. 2. Fold the sheet in the form of a tray (as per required thickness). 3. Take the silicone gel in a separate bowl of required quantity. 4. Add the hardener to silicone gel in required proportion. 5. Stir the mixture properly. 6. Pour the solution into the tray Improvement of Electrical Insulation in Silicone Rubber by Adding Al 2 O 3