Accelerated aging and characterization of HDPE pin type insulators (15 kV)

Abstract

The study of the behavior of polymeric material used for insulators in the electrical system is extremely important in order to evaluate their lifetime as well as their performance when exposed to different environmental conditions. In the present work, the behavior of high-density polyethylene (HDPE) pin type insulators (15 kV), under accelerated aging conditions, was studied. Samples were exposed to aging, for 200 h, 1000 h, and 2000 h, in accelerated weathering chambers, according to two different methods. In Method 1, the parameters were established based on natural aging in location conditions, and in Method 2, ASTM G155 standard parameters were used. All samples were characterized by rheometry, Fourier-transform infrared spectroscopy (FTIR), and differential scanning calorimetry (DSC). The accelerated aging conditions, used in Methods 1 and 2, affected the aging of HDPE pin type insulators samples differently, the changes being more intense in Method 1.

Impact of the surface aging of potable water plastic pipes on their lead deposition characteristics

“…The main three methylene (>CH 2 ) group absorption peaks appeared as doublets at 2917 and 2849 cm −1 (asymmetric and symmetric stretching), 1472 and 1460 cm −1 (bending angular strain), and 730 and 718 cm −1 (rocking), respectively. 60,61 New peaks appeared due to the HDPE pipe aging in the form of a broad hydroxyl (>O-H) peak at around 3370 cm −1 , a carbonyl (>CO) peak at 1650 cm −1 , and a vinyl (>CC) peak at 909 cm −1 . 60,62 The carbonyl and vinyl indices were 0.54 and 0.64 for the new HDPE pipe, and were increased to 0.84 and 1.11, respectively, following 7 d of aging.…”

“…60,61 New peaks appeared due to the HDPE pipe aging in the form of a broad hydroxyl (>O-H) peak at around 3370 cm −1 , a carbonyl (>CO) peak at 1650 cm −1 , and a vinyl (>CC) peak at 909 cm −1 . 60,62 The carbonyl and vinyl indices were 0.54 and 0.64 for the new HDPE pipe, and were increased to 0.84 and 1.11, respectively, following 7 d of aging. By extending the degradation process up to a total Environmental Science: Water Research & Technology Paper of 14 d, unlike with the PEX-A pipes, the HDPE pipes showed enhanced degradation and the carbonyl and vinyl indices increased to 0.95 and 1.12, respectively.…”

Material Characterizations of the Polymers Reinforced with Recycled Flexible Plastic Blends as Filament for 3D Printing

“…) [16]. The absorption at 2800 cm -1 -3000 cm -1 corresponding to the polyethylene bone shows the asymmetric and symmetric stretching of the (-C-H) bond of methyl group, as the main component of HDPE is aliphatic hydrocarbons, alkanes, and alkenes [17].…”

Investigating the Effect of Photo-Oxidative Degradation on the Ageing Resistance of the Car Mudflaps Manufactured with Post-Production High-Density Polyethylene Wastes

“…reduction of elongation and impact strength, change of colour or transparency, etc. [6,9,22]. Gnatowski and al.…”