scholarly journals Rivet-Inspired Modification of Aramid Fiber by Decorating with Silica Particles to Enhance the Interfacial Interaction and Mechanical Properties of Rubber Composites

Materials ◽  
2020 ◽  
Vol 13 (11) ◽  
pp. 2665
Author(s):  
Yihang Li ◽  
Yuzhu Xiong ◽  
Qingpo Zhang
Keyword(s):  
Hybrid Materials ◽  
High Performance ◽  
High Surface ◽  
Silica Particles ◽  
Interfacial Interaction ◽  
Aramid Fiber ◽  
Rubber Matrix ◽  
Rubber Composites ◽  
Large Numbers ◽  
Surface Modified

A rivet–inspired method of decorating aramid fiber (AF) with silica particles (SiO2) is proposed to produce SiO2@AF hybrid materials that have largely enhanced interfacial interaction with the rubber matrix. AF was firstly surface-modified with polyacrylic acid (PAA) to obtain PAA–AF, and SiO2 was silanized with 3-aminopropyltriethoxysilane to obtain APES–SiO2. Then, SiO2@AF was prepared by chemically bonding APES–SiO2 onto the surface of PAA–AF in the presence of dicyclohexylcarbodiimide (DCC) and 4-dimethylaminopyridine (DMAP). With the incorporation of SiO2@AF into the rubber matrix, SiO2@AF hybrid materials with high surface roughness can play a role as ‘rivets’ to immobilize large numbers of rubber chains on the surface. The tear strength and tensile strength of rubber composite that filling 4 phr SiO2@AF are dramatically increased by 97.8% and 89.3% compared to pure rubber, respectively. Furthermore, SiO2@AF has superiority in enhancing the cutting resistance of rubber composites, in contrast with unmodified AF and SiO2. SiO2@AF is suitable to be applied as a novel reinforcing filler in rubber composites for high performance.

scholarly journals Surface Modification of Staple Carbon Fiber by Dopamine to Reinforce Natural Latex Composite

Polymers ◽  
2020 ◽  
Vol 12 (4) ◽  
pp. 988
Author(s):  
Xiaolong Tian ◽  
Shuang Han ◽  
Qianxiao Zhuang ◽  
Huiguang Bian ◽  
Shaoming Li ◽  
...  
Keyword(s):  
Carbon Fiber ◽  
High Performance ◽  
Dynamic Mechanical Properties ◽  
Rubber Matrix ◽  
National Defense ◽  
Rubber Composites ◽  
Rubber Composite ◽  
Thermal And Electrical Properties ◽  
Surface Modified ◽  
Poor Adhesion

Carbon fiber significantly enhances the mechanical, thermal and electrical properties of rubber composites, which are widely used in aerospace, military, national defense and other cutting-edge fields. The preparation of a high-performance carbon fiber rubber composite has been a research hotspot, because the surface of carbon fiber is smooth, reactive inert and has a poor adhesion with rubber. In this paper, a high-performance rubber composite is prepared by mixing dopamine-modified staple carbon fiber with natural latex, and the mechanisms of modified carbon fiber-reinforced natural latex composite are explored. The experimental results show that the surface-modified staple carbon fiber forms uniform and widely covered polydopamine coatings, which significantly improve the interface adhesion between the carbon fiber and the rubber matrix. Meanwhile, when the concentration of dopamine is 1.5 g/L and the staple carbon fiber is modified for 6h, the carbon fiber rubber composite shows excellent conductivity, thermal conductivity, and dynamic mechanical properties, and its tensile strength is 10.6% higher than that of the unmodified sample.

scholarly journals EMERGING ADVANCES IN RUBBER TECHNOLOGY BY THE SUITABLE APPLICATION OF SOL-GEL SCIENCE AND TECHNOLOGY

2021 ◽  
Author(s):  
Kumarjyoti Roy ◽  
Subhas Chandra Debnath ◽  
Debdipta Basu ◽  
Aphiwat Pongwisuthiruchte ◽  
Pranut Potiyaraj
Keyword(s):  
High Performance ◽  
Recent Progress ◽  
Sol Gel ◽  
Rubber Matrix ◽  
Mechanical And Thermal Properties ◽  
Rubber Composites ◽  
Rubber Compounds ◽  
Polymer Research ◽  
Rubber Nanocomposites ◽  
Synthesized Materials

ABSTRACT In recent years, the application of sol-gel science to industrial polymer research has offered advancements in rubber technology. The use of sol-gel–synthesized materials for the development of highly reinforced rubber composites is the most commonly adopted and popular method exercised by rubber scientists. This article comprehensively reviews the recent progress regarding preparation and properties of sol-gel–synthesized nanoparticles-based rubber composites. The pragmatic consequences of sol-gel–synthesized nanoparticles in rubber compounds are systematically described through rheological, mechanical, and thermal properties. Emphatic focus is given to understanding the reinforcement mechanism of rubber composites by the use of sol-gel–derived alkoxide silica as filler. The properties of rubber nanocomposites are usually dependent on the dispersion of sol-gel–synthesized nanoparticles into the rubber matrix. The results reviewed from prolific studies suggested that sol-gel science has tremendous potential to develop high performance rubber nanocomposites for future industrial application.

Fabrication and Evaluation of the Novel Elastomer Based Nanocomposite with Pressure Sensing Function

2007 ◽  
Vol 544-545 ◽  
pp. 741-744
Author(s):  
Youn Gyu Han ◽  
Tomonori Shibata ◽  
Rajagopalan Ramaseshan ◽  
Tohru Sekino ◽  
Koichi Niihara
Keyword(s):  
High Performance ◽  
Low Cost ◽  
Carbon Particle ◽  
Conductive Filler ◽  
Silica Particles ◽  
Modified Silica ◽  
Pressure Sensing ◽  
Carbon Particles ◽  
Pressure Sensitive ◽  
Surface Modified

A novel organic/inorganic composite material which can work as a pressure sensor has been synthesized. This composite basically contains nano-sized carbon particles as conductive filler into an elastomer matrix to achieve pressure sensitive function. The superior pressure sensitive effect was showed at 0.88vol% of carbon particles while in the previous study the micro-sized carbon particle was required above 30vol%. In addition, nano-sized silica particles were added to reinforce electrical insulation properties and to improve the pressure sensing reliability of the composite. The addition of the surface modified silica improved better both the sensing performance and the mechanical strength than the composite containing non-modified silica particles. These polymer-based sensors have economical advantage due to low cost production regardless of the high performance.

A critical review on the utilization of various reinforcement modifiers in filled rubber composites

2019 ◽  
Vol 52 (2) ◽  
pp. 167-193 ◽  
Author(s):  
Kumarjyoti Roy ◽  
Subhas Chandra Debnath ◽  
Pranut Potiyaraj
Keyword(s):  
High Performance ◽  
Practical Importance ◽  
Natural Fibers ◽  
Rubber Matrix ◽  
Rubber Composites ◽  
New Era ◽  
Filled Rubber ◽  
Rubber Compounds ◽  
Mechanism Of Interaction ◽  
Filler Dispersion

Presently, the development of high-performance filled rubber composites offers a new era in the industrial field of polymer research. This article reviews the utilization of various reinforcement modifiers on the successive property enhancement of rubber composites containing different commonly used fillers like silica, nanoclay, carbon nanotube, natural fibers, and so on. The practical importance of reinforcement modifiers in rubber technology is systematically described in the light of filler dispersion, processing, and mechanical properties of filled rubber compounds. A special emphasis is given on the mechanism of interaction between reinforcement modifiers and filler surface in filled rubber composites. Filler dispersion in the rubber matrix is the key parameter that controls the ultimate performance and rubber–filler interaction of filled rubber system. The use of some fixed reinforcement modifiers is an innovative way not only to solve the dispersion problem of filler particles but also to increase the reinforcing ability of most of the fillers in filled rubber products. Thus, the concept of reinforcement modifiers has the potential to facilitate further development of filler reinforcement technology for rubber-based composite materials.

scholarly journals Understanding the Coupling Effect between Lignin and Polybutadiene Elastomer

2021 ◽  
Vol 5 (6) ◽  
pp. 154
Author(s):  
Sakrit Hait ◽  
Debapriya De ◽  
Prasenjit Ghosh ◽  
Jagannath Chanda ◽  
Rabindra Mukhopadhyay ◽  
...  
Keyword(s):  
Coupling Agent ◽  
High Performance ◽  
Mechanical Performance ◽  
Coupling Effect ◽  
Cost Effective ◽  
Rubber Matrix ◽  
Rubber Composites ◽  
Renewable Biomass ◽  
Novel Approach ◽  
Polybutadiene Rubber

From an environmental and economic viewpoint, it is a win–win strategy to use materials obtained from renewable resources for the production of high-performance elastomer composites. Lignin, being a renewable biomass, was employed as a functional filler material to obtain an elastomer composite with a higher degree of mechanical performance. In the presence of a suitable coupling agent, an elevated temperature was preferred for the reactive mixing of lignin with polybutadiene rubber (BR). It is quite fascinating that the mechanical performance of this composite was comparable with carbon black-filled composites. The extraordinary reinforcing behavior of lignin in the BR matrix was understood by an available model of rubber reinforcement. In rubber composite preparation, the interfacial interaction between polybutadiene rubber and lignin in the presence of a coupling agent enabled the efficient dispersion of lignin into the rubber matrix, which is responsible for the excellent mechanical properties of the rubber composites. The rubber composites thus obtained may lead to the development of a sustainable and cost-effective end product with reliable performance. This novel approach could be implemented in other type of elastomeric materials, enabling a genuine pathway toward a sustainable globe.

Enhancing performances of hemp fiber/natural rubber composites via polyhydric hyperbranched polyester

2021 ◽  
Vol 41 (5) ◽  
pp. 404-412
Author(s):  
Zong Shen ◽  
Weihua Song ◽  
Xiaolong Li ◽  
Le Yang ◽  
Chaoyu Wang ◽  
...  
Keyword(s):  
Natural Rubber ◽  
Interfacial Adhesion ◽  
High Performance ◽  
Rubber Matrix ◽  
Rubber Composites ◽  
Hemp Fiber ◽  
Elongation At Break ◽  
Cutting Resistance ◽  
Natural Rubber Composites ◽  
High Elasticity

Abstract High-performance rubber composites can be obtained by combining the strength of fiber with the high elasticity of rubber. In this article, environmentally friendly natural rubber (NR)/carbon (CB) composites reinforced by maleic anhydride (MAH) grafted hemp fiber (HF) in the presence of polyhydric hyper-branched polyester (PHP) were studied. The grafting of MAH on the surface of HF (HF-MAH) improves the roughness of fibers, the introduced C=C participates in rubber covulcanization with NR matrix at high temperature, thus enhancing the physical locking and chemical crosslinking between HF and NR matrix. The bridge effect was produced between HF-MAH and rubber matrix by PHP, and the interfacial adhesion was further enhanced. As a result, the tensile strength, tear strength, and elongation at break were improved by approximately 14.5, 26.2, and 10.8%, respectively. The 100 and 300% constant elongation stress was increased by 134 and 113%, and the cutting resistance was also improved obviously.

scholarly journals Enhancement of Chloroprene/Natural/Butadiene Rubber Nanocomposite Properties Using Organoclays and Their Combination with Carbon Black as Fillers

Polymers ◽  
2021 ◽  
Vol 13 (7) ◽  
pp. 1085
Author(s):  
Patricia Castaño-Rivera ◽  
Isabel Calle-Holguín ◽  
Johanna Castaño ◽  
Gustavo Cabrera-Barjas ◽  
Karen Galvez-Garrido ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Carbon Black ◽  
High Performance ◽  
Rubber Matrix ◽  
Butadiene Rubber ◽  
X Ray Diffraction ◽  
X Ray ◽  
Rubber Blends ◽  
Ft Ir ◽  
Chloroprene Rubber

Organoclay nanoparticles (Cloisite® C10A, Cloisite® C15) and their combination with carbon black (N330) were studied as fillers in chloroprene/natural/butadiene rubber blends to prepare nanocomposites. The effect of filler type and load on the physical mechanical properties of nanocomposites was determined and correlated with its structure, compatibility and cure properties using Fourier Transformed Infrared (FT-IR), X-ray Diffraction (XRD), Thermogravimetric Analysis (TGA) and rheometric analysis. Physical mechanical properties were improved by organoclays at 5–7 phr. Nanocomposites with organoclays exhibited a remarkable increase up to 46% in abrasion resistance. The improvement in properties was attributed to good organoclay dispersion in the rubber matrix and to the compatibility between them and the chloroprene rubber. Carbon black at a 40 phr load was not the optimal concentration to interact with organoclays. The present study confirmed that organoclays can be a reinforcing filler for high performance applications in rubber nanocomposites.

scholarly journals Common Origin of Filler Network Related Contributions to Reinforcement and Dissipation in Rubber Composites

Polymers ◽  
2021 ◽  
Vol 13 (15) ◽  
pp. 2534
Author(s):  
Sriharish Malebennur Nagaraja ◽  
Sven Henning ◽  
Sybill Ilisch ◽  
Mario Beiner
Keyword(s):  
Network Topology ◽  
Filler Content ◽  
Matrix Composition ◽  
Rubber Matrix ◽  
Butadiene Rubber ◽  
Rubber Composites ◽  
Different Temperatures ◽  
Filler Network ◽  
General Perspective ◽  
Rubber Filler

A comparative study focusing on the visco–elastic properties of two series of carbon black filled composites with natural rubber (NR) and its blends with butadiene rubber (NR-BR) as matrices is reported. Strain sweeps at different temperatures are performed. Filler network-related contributions to reinforcement (ΔG′) are quantified by the classical Kraus equation while a modified Kraus equation is used to quantify different contributions to dissipation (ΔGD″, ΔGF″). Results indicate that the filler network is visco-elastic in nature and that it is causing a major part of the composite dissipation at small and intermediate strain amplitudes. The temperature dependence of filler network-related reinforcement and dissipation contributions is found to depend significantly on the rubber matrix composition. We propose that this is due to differences in the chemical composition of the glassy rubber bridges connecting filler particles since the filler network topology is seemingly not significantly influenced by the rubber matrix for a given filler content. The underlying physical picture explains effects in both dissipation and reinforcement. It predicts that these glassy rubber bridges will soften sequentially at temperatures much higher than the bulk Tg of the corresponding rubber. This is hypothetically due to rubber–filler interactions at interfaces resulting in an increased packing density in the glassy rubber related to the reduction of free volume. From a general perspective, this study provides deeper insights towards the molecular origin of reinforcement and dissipation in rubber composites.

scholarly journals Boosting Performance of Self-Polarized Fully Printed Piezoelectric Nanogenerators via Modulated Strength of Hydrogen Bonding Interactions

Nanomaterials ◽  
2021 ◽  
Vol 11 (8) ◽  
pp. 1908
Author(s):  
Hai Li ◽  
Sooman Lim
Keyword(s):  
Hydrogen Bonding ◽  
Composite Film ◽  
High Performance ◽  
Composite Films ◽  
Β Phase ◽  
Hydrogen Bonding Interactions ◽  
Barium Titanate Nanoparticles ◽  
Surface Modified ◽  
Piezoelectric Devices ◽  
Piezoelectric Nanogenerators

Self-polarized piezoelectric devices have attracted significant interest owing to their fabrication processes with low energy consumption. Herein, novel poling-free piezoelectric nanogenerators (PENGs) based on self-polarized polyvinylidene difluoride (PVDF) induced by the incorporation of different surface-modified barium titanate nanoparticles (BTO NPs) were prepared via a fully printing process. To reveal the effect of intermolecular interactions between PVDF and NP surface groups, BTO NPs were modified with hydrophilic polydopamine (PDA) and hydrophobic 1H,1H,2H,2H-perfluorodecyltriethoxysilane (PFDTES) to yield PDA-BTO and PFD-BTO, respectively. This study demonstrates that the stronger hydrogen bonding interactions existed in PFD-BTO/PVDF composite film comparative to the PDA-BTO/PVDF composite film induced the higher β-phase formation (90%), which was evidenced by the XRD, FTIR and DSC results, as well as led to a better dispersion of NPs and improved mechanical properties of composite films. Consequently, PFD-BTO/PVDF-based PENGs without electric poling exhibited a significantly improved output voltage of 5.9 V and power density of 102 μW cm−3, which was 1.8 and 2.9 times higher than that of PDA-BTO/PVDF-based PENGs, respectively. This study provides a promising approach for advancing the search for high-performance, self-polarized PENGs in next-generation electric and electronic industries.

scholarly journals Synthesis of catalysts with fine platinum particles supported by high-surface-area activated carbons and optimization of their catalytic activities for polymer electrolyte fuel cells

RSC Advances ◽  
2021 ◽  
Vol 11 (33) ◽  
pp. 20601-20611
Author(s):  
Md. Mijanur Rahman ◽  
Kenta Inaba ◽  
Garavdorj Batnyagt ◽  
Masato Saikawa ◽  
Yoshiki Kato ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Polymer Electrolyte ◽  
High Performance ◽  
Activated Carbons ◽  
Low Cost ◽  
High Surface ◽  
High Surface Area ◽  
Polymer Electrolyte Fuel Cells ◽  
Supported Platinum ◽  
Platinum Particles

Herein, we demonstrated that carbon-supported platinum (Pt/C) is a low-cost and high-performance electrocatalyst for polymer electrolyte fuel cells (PEFCs).

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