scholarly journals Electrical transport study on low-density polyethelene/carbon black composites at low temperatures

2019 ◽  
Author(s):  
Shadi Yasin
Keyword(s):  
Carbon Black ◽  
Electrical Transport ◽  
Low Temperatures ◽  
Low Density ◽  
Transport Study

scholarly journals Shape Memory Behavior of Carbon Black-reinforced Trans-1,4-polyisoprene and Low-density Polyethylene Composites

Polymers ◽  
2019 ◽  
Vol 11 (5) ◽  
pp. 807 ◽  
Author(s):  
Lin Xia ◽  
Han Gao ◽  
Weina Bi ◽  
Wenxin Fu ◽  
Guixue Qiu ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Carbon Black ◽  
Shape Memory ◽  
Low Density Polyethylene ◽  
Low Density ◽  
Shape Memory Behavior ◽  
Blending Method ◽  
Shape Memory Properties ◽  
Shape Memory Composites ◽  
Properties Of Composites

Shape memory composites of trans-1,4-polyisoprene (TPI) and low-density polyethylene (LDPE) with easily achievable transition temperatures were prepared by a simple physical blending method. Carbon black (CB) was introduced to improve the mechanical properties of the TPI/LDPE composites. The mechanical, cure, thermal and shape memory properties of the TPI/LDPE/CB composites were investigated in this study. In these composites, the crosslinked network generated in both the TPI and LDPE portions acted as a fixed domain, while the crystalline regions of the TPI and LDPE portions acted as a reversible domain in shape memory behavior. We found the mechanical properties of composites were promoted significantly with an increase of CB content, accompanied with the deterioration of shape memory properties of composites. When CB dosage was 5 parts per hundred of rubber composites (phr), best shape memory property of composites was obtained with a shape fixity ratio of 95.1% and a shape recovery ratio of 95.0%.

Electrical transport in amorphous nanofilms embedded with crystalline grains at low temperatures

2020 ◽  
Vol 31 (33) ◽  
pp. 335708
Author(s):  
Dongdong Zhu ◽  
Fei Dai ◽  
Xibo Li ◽  
Wei Lin ◽  
Kai Wang ◽  
...  
Keyword(s):  
Electrical Transport ◽  
Low Temperatures

scholarly journals Potassium-Doped Para-Terphenyl: Structure, Electrical Transport Properties and Possible Signatures of a Superconducting Transition

2020 ◽  
Vol 5 (4) ◽  
pp. 78
Author(s):  
Nicola Pinto ◽  
Corrado Di Nicola ◽  
Angela Trapananti ◽  
Marco Minicucci ◽  
Andrea Di Cicco ◽  
...  
Keyword(s):  
Magnetic Susceptibility ◽  
Electrical Transport ◽  
Low Temperatures ◽  
Chemical Method ◽  
Preliminary Evidence ◽  
Superconducting Gap ◽  
Superconducting Transition ◽  
Electrical Transport Properties ◽  
High Tc ◽  
Resistivity Measurements

Preliminary evidence for the occurrence of high-TC superconductivity in alkali-doped organic materials, such as potassium-doped p-terphenyl (KPT), were recently obtained by magnetic susceptibility measurements and by the opening of a large superconducting gap as measured by ARPES and STM techniques. In this work, KPT samples have been synthesized by a chemical method and characterized by low-temperature Raman scattering and resistivity measurements. Here, we report the occurrence of a resistivity drop of more than 4 orders of magnitude at low temperatures in KPT samples in the form of compressed powder. This fact was interpreted as a possible sign of a broad superconducting transition taking place below 90 K in granular KPT. The granular nature of the KPT system appears to be also related to the 20 K broadening of the resistivity drop around the critical temperature.

Transport Properties of Granular Nix(SiO2)100−x Thin Films

1990 ◽  
Vol 195 ◽  
Author(s):  
John R. Beamish ◽  
B.M. Patterson ◽  
K.M. Unruh
Keyword(s):  
Thin Films ◽  
Temperature Dependence ◽  
Electrical Transport ◽  
Low Temperatures ◽  
Room Temperature ◽  
Volume Percent ◽  
Ni Content ◽  
Resistivity Minimum ◽  
Temperature Coefficient Of Resistivity ◽  
Sputter Deposited

ABSTRACTWe have studied the electrical transport behavior of sputter deposited Nix(SiO2)100−x thin films between room temperature and 100 mK and, at selected temperatures, in applied magnetic fields up to 6 T. As the Ni concentration x is reduced, the resistivity increases systematically. At a Ni concentration (nominal) of about x–70 atomic percent (38 volume percent) the room temperature coefficient of resistivity changes sign. For Ni concentrations greater than 70 percent the resistance first decreases with temperature then increases logarithmically at, low temperatures. This increase becomes smaller and the resistivity minimum moves to progressively lower temperatures as the Ni concentration increases. In films with less than x–70 percent Ni, the resistivity has a temperature dependence of the form ρ(T)–ρo exp \(To/T)α] between room temperature and about 5 K. The exponent a is about 1/2 and To increases with decreasing Ni content. Below 1 K, however, the resistivity increases much less rapidly, with a temperature dependence independent of Ni concentration. In all films the magnetoresistance is small and negative.

High temperature electrical transport study of Si-doped AlN

2016 ◽  
Vol 98 ◽  
pp. 253-258 ◽  
Author(s):  
Sylvie Contreras ◽  
Leszek Konczewicz ◽  
Jaweb Ben Messaoud ◽  
Hervé Peyre ◽  
Mohamed Al Khalfioui ◽  
...  
Keyword(s):  
High Temperature ◽  
Electrical Transport ◽  
Transport Study ◽  
Si Doped

The Temperature Dependence of the Interphase Characteristics of Carbon-Black-Filled Polymer Blends of SKD-35 cis-Butadiene Rubber and Low-Density Polyethylene

2014 ◽  
Vol 41 (10) ◽  
pp. 55-58
Author(s):  
L.V. Baragunova ◽  
T.A. Gubzhev ◽  
A.Z. Kashezhev ◽  
R.B. Tkhakakhov ◽  
B.S. Karamurzov
Keyword(s):  
Carbon Black ◽  
Polymer Blends ◽  
Temperature Dependence ◽  
Low Density Polyethylene ◽  
Low Density ◽  
Butadiene Rubber ◽  
Large Drop ◽  
Drop Method ◽  
Interphase Tension ◽  
Large Drop Method

The large drop method was used to investigate the interphase tension of polymer blends of synthetic SKD-35 -butadiene rubber and low-density polyethylene filled with nanosized carbon black DG-100 particles at the boundary with glycerin and air in the temperature range 20–120°C.

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