نتایج جستجو برای: high performance polymer

تعداد نتایج: 2927140  

ژورنال: مواد پرانرژی 2018

Binder has a key role in the performance of composite propellants. The binders are classified into two neutral and high-energy categories. GAP is one of the most important energetic binders, but it has poor mechanical and thermal properties. The goal of this investigation is to improve the properties of GAP by copolymerizing it with polycaprolactone. New energy triblock copolymer was synthesize...

2017
Kara D. Fong Tiesheng Wang Hyun-Kyung Kim R. Vasant Kumar Stoyan K. Smoukov

Conducting polymers show great promise as supercapacitor materials due to their high theoretical specific capacitance, low cost, toughness, and flexibility. Poor ion mobility, however, can render active material more than a few tens of nanometers from the surface inaccessible for charge storage, limiting performance. Here, we use semi-interpenetrating networks (sIPNs) of a pseudocapacitive poly...

2013
Jingbi You Letian Dou Ken Yoshimura Takehito Kato Kenichiro Ohya Tom Moriarty Keith Emery Chun-Chao Chen Jing Gao Gang Li Yang Yang

An effective way to improve polymer solar cell efficiency is to use a tandem structure, as a broader part of the spectrum of solar radiation is used and the thermalization loss of photon energy is minimized. In the past, the lack of high-performance low-bandgap polymers was the major limiting factor for achieving high-performance tandem solar cell. Here we report the development of a high-perfo...

Journal: :Energy and Environmental Science 2022

We report a new molecular design of sequentially regular polymerized small-molecule-acceptors containing flexible spacer (FS) units (PYFS-Reg) to achieve all-polymer solar cells with both high-performance and mechanical stretchability.

ژورنال: مواد پرانرژی 2014

Glycidyl Azide Polymer is one of the most important energetic binders that is used in the composite solid propellant formulation. GAP is a unique binder with a positive heat of formation (+117.2 kJ⁄mol). In addition, GAP has good thermal and physical properties such as low glass transition temperature, low viscosity and high density compared to other energetic binders. GAP can be used as a bin...

Journal: :Journal of sports sciences 2008
Francis B Stephens Marc Roig Gerald Armstrong Paul L Greenhaff

The aim of the present study was to determine the effect of post-exercise ingestion of a unique, high molecular weight glucose polymer solution, known to augment gastric emptying and post-exercise muscle glycogen re-synthesis, on performance during a subsequent bout of intense exercise. On three randomized visits, eight healthy men cycled to exhaustion at 73.0% (s = 1.3) maximal oxygen uptake (...

2016
Jianyu Yuan Jinan Gu Guozheng Shi Jianxia Sun Hai-Qiao Wang Wanli Ma

In this work, we have reported for the first time an efficient all-polymer tandem cell using identical sub-cells based on P2F-DO:N2200. A high power conversion efficiency (PCE) of 6.70% was achieved, which is among the highest efficiencies for all polymer solar cells and 43% larger than the PCE of single junction cell. The largely improved device performance can be mainly attributed to the enha...

Journal: :Progress in Organic Coatings 2022

Despite the huge and increasing application of high solids content polymer colloids for coating application, there are few challenges that still limit their full potential. The most emerging one is use surfactants colloidal stabilization affects negatively performance. Moreover, due to particulate nature, waterborne dispersions presents lower mechanical performance with respect solvent-based co...

2013
Kenan Song Yiying Zhang Jiangsha Meng Emily C. Green Navid Tajaddod Heng Li Marilyn L. Minus

Among the many potential applications of carbon nanotubes (CNT), its usage to strengthen polymers has been paid considerable attention due to the exceptional stiffness, excellent strength, and the low density of CNT. This has provided numerous opportunities for the invention of new material systems for applications requiring high strength and high modulus. Precise control over processing factor...

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