scholarly journals Rheological and Thermal Behavior of High-Density Polyethylene (HDPE) at Different Temperatures

2014 ◽  
Vol 05 (13) ◽  
pp. 923-931 ◽  
Author(s):  
Cynthia D’Avila Carvalho Erbetta ◽  
Getúlio F. Manoel ◽  
Ana Paula Lelis Rodrigues Oliveira ◽  
Maria Elisa Scarpelli Ribeiro e Silva ◽  
Roberto Fernando Souza Freitas ◽  
...  
Keyword(s):  
Thermal Behavior ◽  
High Density Polyethylene ◽  
High Density ◽  
Different Temperatures

scholarly journals MECHANICAL CHARACTERIZATION OF PA 12 AND HDPE PIPES BEFORE AND AFTER AGING IN WATER AT TWO DIFFERENT TEMPERATURES

2021 ◽  
Vol 9 (1) ◽  
pp. 248-256
Author(s):  
J.A. dos Santos ◽  
R.C. Tucunduva ◽  
J.R.M. D’Almeida
Keyword(s):  
High Density Polyethylene ◽  
Mechanical Performance ◽  
High Density ◽  
Effect Of Temperature ◽  
Polyamide 12 ◽  
Polyethylene Pipes ◽  
Before And After ◽  
Different Temperatures ◽  
Deterioration Process ◽  
Combined Action

Polymer pipes are being widely used by many industrial segments. Although not affected by corrosion, the mechanical performance of these pipes can be reduced due to exposure to temperature, UV radiation and by contact with various fluids. Depending on the deterioration process, embrittlement or plasticization may occur, and the service life of the pipe can be severely reduced. In this work, the combined action of temperature and water upon the mechanical performance of polyamide 12 and high-density polyethylene pipes is evaluated. Destructive and non-destructive techniques were used and the performance of both materials was compared. Both polymers were platicized by the effect of water. However, for high density polyethylene the effect of temperature was more relevant than for polyamide. This behavior was attributed to the dependence of the free volume with the markedly different glass transition temperature of the polymers and the temperatures of testing.

Sepiolite as a nanofiller to improve mechanical and thermal behavior of recycled high-density polyethylene

2020 ◽  
Vol 36 (3) ◽  
pp. 185-195 ◽  
Author(s):  
Negin Farshchi ◽  
Yalda K Ostad
Keyword(s):  
Thermal Behavior ◽  
High Density Polyethylene ◽  
Low Cost ◽  
Process Condition ◽  
Softening Temperature ◽  
High Density ◽  
Plastic Pollution ◽  
Scanning Calorimetry ◽  
Melt Flow Rate ◽  
Recycled Hdpe

Regarding the current demand for controlling plastic pollution, recycling of polymer sounds a promising solution. However, recycling causes mechanical and thermal shortcomings in polymers. Addition of nanoparticles to recycled materials may overcome these shortcomings. Nanocomposites can be achieved either by blending or through polymerization. Sepiolite as a nanoparticle enhances the thermal properties of polymers. In this study, the effect of sepiolite as a nanoparticle has been investigated on the thermal and mechanical behavior of recycled high-density polyethylene (HDPE). Hardness, density, Vicat softening temperature, melt flow rate (MFR), and differential scanning calorimetry has been investigated on recycled HDPE containing different amount of sepiolite. Results showed that both the amount of recycled HDPE and the sepiolite content affect the mechanical and thermal behavior of samples. Increasing the amount of recycled component resulted in increasing of MFR, a slight increase in density, and decrease in Vicat softening point, hardness, melting temperature, and degree of crystallization. As an opposite effect of these to factors on crystallinity of HDPE, sepiolite content has better effects to be considered separately for each recycle content. Sepiolite can be introduced as a low-cost reinforcement filler in recycling industry for tuning new compositions based on process condition, or vice versa.

Short chain branching distribution and thermal behavior of high-density polyethylene

1996 ◽  
Vol 60 (13) ◽  
pp. 2469-2479 ◽  
Author(s):  
Yong-Man Kim ◽  
Chul-Hwan Kim ◽  
Jung-Ki Park ◽  
Jung-Whan Kim ◽  
Tae-Ik Min
Keyword(s):  
Thermal Behavior ◽  
High Density Polyethylene ◽  
High Density ◽  
Short Chain ◽  
Chain Branching

The effect of ultraviolet irradiation and temperature on the resilience of high density polyethylene

2014 ◽  
Vol 34 (8) ◽  
pp. 727-731
Author(s):  
Naouri Ladaci ◽  
Ahmed Belbah ◽  
Kheirddine Kraim ◽  
Nadia Mebarki
Keyword(s):  
Public Health ◽  
Climate Change ◽  
High Density Polyethylene ◽  
Aging Process ◽  
Irradiation Time ◽  
Accelerated Aging ◽  
High Density ◽  
External Shocks ◽  
Two Factors ◽  
Different Temperatures

Abstract High density polyethylene (HDPE) has recently been established as the material of choice for the distribution and transport of drinking water on economic and public health levels. Because of this, a simulation study was conducted to investigate the effect of aging by two factors on HDPE, in order to check the mechanical robustness of this material with regards to climate change. First, specimens of the material (HDPE80) underwent treatment with irradiation by ultraviolet (UV) radiation for different periods up to 120 h. The accelerated aging process by UV irradiation gave a negative correlation between resilience and the irradiation time in hours. Second, we tested the HDPE80 resilience to different temperatures, at various notch depths (0.4, 0.8, 1, 1.25 and 1.5 mm), to external shocks.

Influence of Alumina Particles on Thermal Behavior of High Density Polyethylene (HDPE)

2012 ◽  
Vol 51 (2) ◽  
pp. 214-219 ◽  
Author(s):  
Mohammad Taghi Hamed Mosavian ◽  
Alireza Bakhtiari ◽  
Samaneh Sahebian
Keyword(s):  
Thermal Behavior ◽  
High Density Polyethylene ◽  
High Density ◽  
Alumina Particles
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