Compounding of ethylene-propylene polymers for electrical applications

“…Electron beam (EB) radiation processing is being used for cross-linking of such composite matrices [3,4]. Main advantages of this process are: low temperatures, fast reaction time, low emission of volatile materials and a product with improved mechanical properties.…”

Section: Characterization Of Blends (A) Physico -Chemical Investimentioning

confidence: 99%

“…In the case of rubber blends, the incompatibility is not only due to the poor adhesion between the phases but also to the difference in cure rate. Many researchers have investigated the properties of various blend ratios of the commonly used polymers [3,4,5,6]. But, the property modification by e beam radiation on these blends were never reported.…”

Section: Introductionmentioning

confidence: 98%

Property modification of SiR-EPDM blends by electron beam irradiation

Rajini¹,

Deepalaxmi²

2012

2012 IEEE International Conference on Condition Monitoring and Diagnosis

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Ethylene propylene diene monomer rubber (EPDM) is an excellent rubber for outdoor use. Silicone rubber (SiR) containing EPDM may show improved weathering resistance. Hence, EPDM is blended with silicone rubber with various blend ratios. After processing and curing, the electrical and mechanical properties of the SiR/EPDM blends are determined. The heat and weathering resistance of the SiR/EPDM blends were determined in terms of tensile properties of the blends with various blend ratios. The results of the experiments show that the tensile strength of the blends progressively decreased with an increased amount of SiR. The electrical properties decrease with the increase in EPDM content. E beam radiation is generally used to improve the performance of the polymeric materials. This paper discusses the resultant beneficial effects created by electron beam during the cable manufacturing process. This paper presents the results of investigations concerning the changes in mechanical and electrical properties of various blends of SiR/EPDM exposed to different doses of electron beam radiation. Samples were exposed to three different doses of e beam (5 Mrad, 15 Mrad , and 25 Mrad) and the various electrical and mechanical parameters are investigated. The electrical changes induced by irradiation are investigated by arc, surface, volume resistance and comparative tracking index measurements. Also the mechanical changes caused by e beam are analyzed by tensile strength and elongation at break measurements.

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“…Amidst polymers, EPDM and SiR are the commonly used elastomer materials in harsh environments. Many researchers have investigated the performance of these commonly used polymers [1,2] and also their blends [3][4][5][6][7]. However the property modification by E-beam irradiation on these blends has never been reported.…”

Section: Introductionmentioning

confidence: 99%

Property Enhancement of SiR-EPDM Blend Using Electron Beam Irradiation

Deepalaxmi¹,

Rajini²

2014

Journal of Electrical Engineering and Technology

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-Polymers are the most commonly used di-electrics because of their reliability, availability, ease of fabrication and cost. The commercial and industrial demand for advanced polymeric materials which are capable of being used in harsh environment is need of the hour. The study of the effect of electron beam irradiation on polymeric materials is an area of rapidly increasing interest. This paper discusses the resultant beneficial effects of electron beam irradiation on the SiR-EPDM blend having 50:50 composition. The changes in mechanical and electrical properties of SiR-EPDM blend which are exposed to three different doses of electron beam radiation namely 5 Mrad, 15 Mrad and 25 Mrad are presented. The irradiated blends are analyzed for their electro-mechanical and physico chemical properties. The electrical changes induced by irradiation are investigated by arc resistance, surface resistivity and volume resistivity measurements as per ASTM standards. The mechanical changes are observed by the measurement of tensile strength and elongation at break. Physico chemical investigation has been done using the FTIR, in order to investigate the irradiation induced chemical changes.

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Compounding of ethylene-propylene polymers for electrical applications

Cited by 31 publications

References 2 publications

From "dust" to quality dielectric - the formulation of dielectric clays

From "dust" to quality dielectric - the formulation of dielectric clays

Property modification of SiR-EPDM blends by electron beam irradiation

Property Enhancement of SiR-EPDM Blend Using Electron Beam Irradiation

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