Effect of organic grafting expandable graphite on combustion behaviors and thermal stability of low‐density polyethylene composites

2019 ◽  
Vol 41 (2) ◽  
pp. 719-728 ◽  
Author(s):  
Lingtong Li ◽  
Dezhao Wang ◽  
Shaopeng Chen ◽  
Yiyin Zhang ◽  
Yifan Wu ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Low Density Polyethylene ◽  
Expandable Graphite ◽  
Low Density ◽  
Combustion Behaviors ◽  
Thermal Stability Of ◽  
Polyethylene Composites

Thermal Stability of Gamma Irradiated Low Density Polyethylene Films Containing Hindered Amine Stabilizers

2004 ◽  
Vol 289 (6) ◽  
pp. 524-530 ◽  
Author(s):  
Traian Zaharescu ◽  
Mustapha Kaci ◽  
Ghania Hebal ◽  
Radu Setnescu ◽  
Tanta Setnescu ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Low Density Polyethylene ◽  
Low Density ◽  
Polyethylene Films ◽  
Gamma Irradiated ◽  
Thermal Stability Of

scholarly journals Influence of High-Concentration LLDPE on the Manufacturing Process and Morphology of Pitch/LLDPE Fibres

Crystals ◽  
2021 ◽  
Vol 11 (9) ◽  
pp. 1099
Author(s):  
Salem Mohammed Aldosari ◽  
Muhammad A. Khan ◽  
Sameer Rahatekar
Keyword(s):  
Mechanical Properties ◽  
Thermal Stability ◽  
Tensile Modulus ◽  
Low Density Polyethylene ◽  
Low Density ◽  
Linear Low Density Polyethylene ◽  
High Concentration ◽  
Scanning Electron Microscope Study ◽  
High Concentrations ◽  
Thermal Stability Of

A high modulus of elasticity is a distinctive feature of carbon fibres produced from mesophase pitch. In this work, we expand our previous study of pitch/linear low-density polyethylene blend fibres, increasing the concentration of the linear low-density polyethylene in the blend into the range of from 30 to 90 wt%. A scanning electron microscope study showed two distinct phases in the fibres: one linear low-density polyethylene, and the other pitch fibre. Unique morphologies of the blend were observed. They ranged from continuous microfibres of pitch embedded in linear low-density polyethylene (occurring at high concentrations of pitch) to a discontinuous region showing the presence of spherical pitch nodules (at high concentrations of linear low-density polyethylene). The corresponding mechanical properties—such as tensile strength, tensile modulus, and strain at failure—of different concentrations of linear low-density polyethylene in the pitch fibre were measured and are reported here. Thermogravimetric analysis was used to investigate how the increased linear low-density polyethylene content affected the thermal stability of linear low-density polyethylene/pitch fibres. It is shown that selecting appropriate linear low-density polyethylene concentrations is required, depending on the requirement of thermal stability and mechanical properties of the fibres. Our study offers new and useful guidance to the scientific community to help select the appropriate combinations of linear low-density polyethylene/pitch blend concentrations based on the required mechanical property and thermal stability of the fibres.

Retarded Cross-linking in ZnO-low-density Polyethylene Nanocomposites

2002 ◽  
Vol 17 (5) ◽  
pp. 940-943 ◽  
Author(s):  
J.I. Hong ◽  
K. S. Cho ◽  
C. I. Chung ◽  
L. S. Schadler ◽  
R. W. Siegel
Keyword(s):  
Thermal Stability ◽  
Thermal Properties ◽  
Thermal Degradation ◽  
Surface Properties ◽  
Zno Nanoparticles ◽  
Low Density Polyethylene ◽  
Cross Linking ◽  
Low Density ◽  
Zno Particles ◽  
Thermal Stability Of

ZnO nanoparticles were mixed with branched low-density polyethylene and were found to increase the resistance of the polymer to thermal degradation without changing other thermal properties. Submicron-size ZnO particles were mixed with low-density polyethylene for comparison, and it was found that the increased thermal stability of the nanocomposite was due to the surface properties of nanoparticles smaller than approximately 100 nm in diameter.

Thermal degradation of coir fiber reinforced low-density polyethylene composites

2018 ◽  
Vol 25 (2) ◽  
pp. 363-372 ◽  
Author(s):  
Nirupama Prasad ◽  
Vijay Kumar Agarwal ◽  
Shishir Sinha
Keyword(s):  
Thermal Stability ◽  
Thermal Degradation ◽  
Fiber Surface ◽  
Fiber Composites ◽  
Low Density Polyethylene ◽  
Low Density ◽  
Coir Fiber ◽  
Untreated Fiber ◽  
Ldpe Composites ◽  
Thermal Stability Of

AbstractIn the present study, the effect of fiber surface treatments (alkali and acrylic acid) on the thermal degradation behavior of coir fiber (CF)-low-density polyethylene (LDPE) composites with or without compatibilizer (maleic anhydride grafted LDPE, MA-g-LDPE) using thermogravimetric and derivative thermogravimetric analyses (TG/DTG) was analyzed and compared with those of untreated fiber composites. The TG/DTG results revealed that the thermal stability of the CF improved after the chemical treatments. However, the composite containing treated fiber showed lower thermal stability and started to degrade at a faster rate above 380°C in comparison to composites containing untreated fiber composites. Furthermore, the addition of MA-g-LDPE led to improvement in the thermal stability of both treated and untreated fiber composites in comparison to the same composite formulation without MA-g-LDPE. The composite containing untreated fiber and MA-g-LDPE demonstrated superior thermal stability among all the formulated composites, indicating strong fiber-matrix adhesion.

Nano-Cu/Low-Density Polyethylene Composites: Structure and Control Release of Cupric Ions

2016 ◽  
Vol 848 ◽  
pp. 72-76
Author(s):  
Yu Qiu ◽  
Hua Lei ◽  
Tao Xu
Keyword(s):  
Thermal Stability ◽  
Intrauterine Device ◽  
Control Release ◽  
Low Density Polyethylene ◽  
Release Time ◽  
Burst Release ◽  
Low Density ◽  
Scanning Calorimetry ◽  
Blending Method ◽  
Polyethylene Composites

In recent years a new type of intrauterine device (nanoCu/LDPE composites) has been concerned by a lot of scholars for its short release time, high bioavailability and good biocompatibility. In this study nanoCu/low-density polyethylene composites were prepared by extruding mixtures of pure LDPE and nanoCu using melt-blending method, the release rate of cupric ions (Cu2+) was measured in simulated uterine fluid. The non-isothermal crystallization behavior and thermal stability of the composites before and after immersion were studied by differential scanning calorimetry (DSC) and thermogravimetric analyzer (TG). The results showed that Composites effectively shorten the time of the copper ion "burst release" , the burst release phenomenon of Cu2+ occurred during the first five days after immersion , and then tend to stable . By immersion the crystallinity of composites increased, and the thermal stability decreased.

Study on the thermal stability of stabilized and unstabilized low-density polyethylene films

2020 ◽  
Author(s):  
Meriam Imane Babaghayou ◽  
Abdel-Hamid Ismail Mourad ◽  
Almudena Ochoa ◽  
Freddys Beltrán ◽  
Nizamudeen Cherupurakal
Keyword(s):  
Thermal Stability ◽  
Low Density Polyethylene ◽  
Low Density ◽  
Polyethylene Films ◽  
Thermal Stability Of
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