A Cost-Effective Alpha-Fluorinated Bithienyl Benzodithiophene Unit for High-Performance Polymer Donor Material

2021 ◽  
Author(s):  
Wenqing Zhang ◽  
Chenkai Sun ◽  
Shucheng Qin ◽  
Ziya Shang ◽  
Shaman Li ◽  
...  
Keyword(s):  
High Performance ◽  
Cost Effective ◽  
Donor Material ◽  
High Performance Polymer

A new dialkylthio-substituted naphtho[2,3-c]thiophene-4,9-dione based polymer donor for high-performance polymer solar cells

2019 ◽  
Vol 12 (2) ◽  
pp. 675-683 ◽  
Author(s):  
Yue Wu ◽  
Hang Yang ◽  
Yan Zou ◽  
Yingying Dong ◽  
Jianyu Yuan ◽  
...  
Keyword(s):  
Solar Cells ◽  
Conjugated Polymer ◽  
High Performance ◽  
Polymer Solar Cells ◽  
Term Stability ◽  
Long Term Stability ◽  
Donor Material ◽  
High Performance Polymer

A dialkylthio-substituted conjugated polymer is designed and synthesized as a donor material for high-performance polymer solar cells with long-term stability.

Flexural Toughness of Concrete with High Performance Polymers

2013 ◽  
Vol 687 ◽  
pp. 480-484
Author(s):  
Chee Seong Chin ◽  
Robert Yong Xiao
Keyword(s):  
High Performance ◽  
Plain Concrete ◽  
Cost Effective ◽  
Absorption Capacity ◽  
Sustainable Construction ◽  
Peak Performance ◽  
Steel Fibres ◽  
Flexural Toughness ◽  
High Performance Polymer ◽  
Potential Alternative

Flexural toughness is a measure of energy absorption capacity and characterization of material’s ability to resist fracture under flexure loads. Concrete, when unreinforced, behaves generally well in compression but its flexural behaviour particularly the post-peak performance is rather weak and brittle. Conventional method has been to include steel fibres to enhance the flexural capacity but was discouraged by their impractically heavy cost and weight constraints. This paper presents the use of high performance polymeric fibres as a cost-effective and lightweight potential alternative which also fits well into the modern era of sustainable construction seeing that they leaves substantially lower carbon footprint compared to steel. Mechanically deformed high performance polymer (HPP) made of 100 percent virgin polypropylene was adopted and incorporated into concrete mixes and its composite performance was experimentally investigated and compared to plain concrete and those reinforced by steel fibres. An analytical method to predict the overall flexural toughness response has also been proposed and verified.

Preparation and characterization of a new high-performance polymer composite and its application as a lead-free polymer-based projectile

2019 ◽  
Vol 32 (5) ◽  
pp. 550-558 ◽  
Author(s):  
Mehdi Derradji ◽  
Abdelrazak Mouloud ◽  
Djalal Trache ◽  
Abdeldjalil Zegaoui ◽  
Aboubakr Medjahed ◽  
...  
Keyword(s):  
Carbon Fibers ◽  
High Performance ◽  
Cost Effective ◽  
Major Type ◽  
Self Defense ◽  
High Performance Polymer ◽  
Conventional Weapons ◽  
Bismuth Oxide Nanoparticles ◽  
Surface Modified

Lead-based bullets are the major type of ammunition used all over the world. The high toxicity of this heavy metal directly affects the personnel manufacturing the projectiles and causes the contamination of the shooting ranges. To provide remedy, this work proposes cost-effective and highly performant polymer-based bullets intended to replace the traditional lead-based ones in a multitude of conventional weapons. The proposed new projectiles were elaborated from a high-performance phthalonitrile resin and several amounts of silane surface-modified chopped carbon fibers and bismuth oxide nanoparticles. The newly developed bullets were manufactured and tested for their precisions at 50 m and their velocities at 2 m from the barrel. The obtained results showed exceptional precisions with high velocities. Furthermore, the mechanical, thermal, and morphological investigations further confirmed the superior performances of these exceptional materials. It can be inferred that the produced bullets are suitable for ammunitions intended to be used for close combat and self-defense situations.

Towards improved efficiency of polymer solar cells via chlorination of a benzo[1,2-b:4,5-b′]dithiophene based polymer donor

2019 ◽  
Vol 7 (5) ◽  
pp. 2261-2267 ◽  
Author(s):  
Yingying Dong ◽  
Hang Yang ◽  
Yue Wu ◽  
Yan Zou ◽  
Jianyu Yuan ◽  
...  
Keyword(s):  
Solar Cells ◽  
Conjugated Polymer ◽  
High Performance ◽  
Polymer Solar Cells ◽  
Donor Material ◽  
High Performance Polymer

A chlorine substituted benzo[1,2-b:4,5-b′]dithiophene based conjugated polymer, PBT-Cl, is designed and synthesized as a donor material for high-performance polymer solar cells.

scholarly journals A low cost and high performance polymer donor material for polymer solar cells

2018 ◽  
Vol 9 (1) ◽  
Author(s):  
Chenkai Sun ◽  
Fei Pan ◽  
Haijun Bin ◽  
Jianqi Zhang ◽  
Lingwei Xue ◽  
...  
Keyword(s):  
Solar Cells ◽  
High Performance ◽  
Polymer Solar Cells ◽  
Low Cost ◽  
Donor Material ◽  
High Performance Polymer

scholarly journals Functionalized Nanosilica for Vulcanization Efficiency and Mechanical Properties of Natural Rubber Composites

2021 ◽  
Author(s):  
Dileep Padmanabhan ◽  
Sinto Jacob ◽  
C.S. Julie Chandra ◽  
Midhun Dominic C.D ◽  
Poornima M P ◽  
...  
Keyword(s):  
Natural Rubber ◽  
High Performance ◽  
Morphological Analysis ◽  
Mechanical Performance ◽  
Cost Effective ◽  
Rubber Composites ◽  
Profound Influence ◽  
High Performance Polymer ◽  
Natural Rubber Composites ◽  
Cure Time

Abstract Accelerator functional character was introduced on nanosilica by the chemical reaction of sodium isopropyl xanthate (SIPX) with nanosilica (NS). Functional characteristics of nanosilica were confirmed by the Elemental analysis, thermogravimetric analysis, and infrared spectroscopy. This SIPX functionalized nanosilica (SIPX-NS) incorporated natural rubber (NR) compounds were used to evaluate the dispersion of silica in rubber and also the interaction between rubber and filler. The finely dispersed SIPX-NS particles in the NR matrix are revealed from the morphological analysis. Subtle changes in surface chemistry of silica had a profound influence on the dispersibility in NR matrix. NR 4SIPX-NS composite exhibited improved cure time, tensile strength, flex crack resistance and aging resistance relative to those of NR NS composite. This simple, efficient and cost-effective surface modification of silica improved the vulcanization efficiency and mechanical performance of NR composites and has great potential in the fabrication of high-performance polymer composites.

Mineral/microfibrillated cellulose composite materials: High performance products, applications, and product forms

TAPPI Journal ◽  
2018 ◽  
Vol 17 (09) ◽  
pp. 507-515 ◽  
Author(s):  
David Skuse ◽  
Mark Windebank ◽  
Tafadzwa Motsi ◽  
Guillaume Tellier
Keyword(s):  
Composite Materials ◽  
High Performance ◽  
Aqueous Suspension ◽  
Production Capacity ◽  
Cost Savings ◽  
Cost Effective ◽  
New Materials ◽  
Wet Strength ◽  
Product Forms ◽  
Cellulose Composite

When pulp and minerals are co-processed in aqueous suspension, the mineral acts as a grinding aid, facilitating the cost-effective production of fibrils. Furthermore, this processing allows the utilization of robust industrial milling equipment. There are 40000 dry metric tons of mineral/microfbrillated (MFC) cellulose composite production capacity in operation across three continents. These mineral/MFC products have been cleared by the FDA for use as a dry and wet strength agent in coated and uncoated food contact paper and paperboard applications. We have previously reported that use of these mineral/MFC composite materials in fiber-based applications allows generally improved wet and dry mechanical properties with concomitant opportunities for cost savings, property improvements, or grade developments and that the materials can be prepared using a range of fibers and minerals. Here, we: (1) report the development of new products that offer improved performance, (2) compare the performance of these new materials with that of a range of other nanocellulosic material types, (3) illustrate the performance of these new materials in reinforcement (paper and board) and viscosification applications, and (4) discuss product form requirements for different applications.

Parallel Computing for Tire Simulations

2011 ◽  
Vol 39 (3) ◽  
pp. 193-209 ◽  
Author(s):  
H. Surendranath ◽  
M. Dunbar
Keyword(s):  
High Performance ◽  
Effective Means ◽  
Cost Effective ◽  
Turnaround Time ◽  
Careful Consideration ◽  
Rolling Contact ◽  
Element Analysis ◽  
Parallel Solvers ◽  
Design Changes ◽  
Highly Nonlinear

Abstract Over the last few decades, finite element analysis has become an integral part of the overall tire design process. Engineers need to perform a number of different simulations to evaluate new designs and study the effect of proposed design changes. However, tires pose formidable simulation challenges due to the presence of highly nonlinear rubber compounds, embedded reinforcements, complex tread geometries, rolling contact, and large deformations. Accurate simulation requires careful consideration of these factors, resulting in the extensive turnaround time, often times prolonging the design cycle. Therefore, it is extremely critical to explore means to reduce the turnaround time while producing reliable results. Compute clusters have recently become a cost effective means to perform high performance computing (HPC). Distributed memory parallel solvers designed to take advantage of compute clusters have become increasingly popular. In this paper, we examine the use of HPC for various tire simulations and demonstrate how it can significantly reduce simulation turnaround time. Abaqus/Standard is used for routine tire simulations like footprint and steady state rolling. Abaqus/Explicit is used for transient rolling and hydroplaning simulations. The run times and scaling data corresponding to models of various sizes and complexity are presented.

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