DISPERSION AND MECHANICAL PROPERTIES OF CERIUM OXIDE FILLED INTO RUBBER COMPOSITES

2014 ◽  
Vol 87 (2) ◽  
pp. 340-347 ◽  
Author(s):  
Zhaogang Liu ◽  
Mei Li ◽  
Yanhong Hu ◽  
Hai Fu ◽  
Mitang Wang ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Cerium Oxide ◽  
Rubber Matrix ◽  
X Ray Diffraction ◽  
Small Particles ◽  
Rubber Composites ◽  
X Ray ◽  
Large Particles ◽  
Better Than ◽  
Properties Of Composites

ABSTRACT Rubber composites were synthesized by natural rubber filled with cerium oxide with different particle diameters. The dispersion morphology of cerium oxide in rubber matrix and the mechanical properties of composites were studied, and the contrast experiment of reinforcing rubber with cerium oxide was performed. The results showed that the small particles of cerium oxide had better disparity than the large particles of cerium oxide in NR. The mechanical properties of rubber filled with small particles of cerium oxide were better than those of rubber filled with large particles of cerium oxide. The crystalline rubber was measured by X-ray diffraction, which indicated that the CeO2 accelerated crystallization capacity and confined the rubber chain movement. The tensile strength of rubber was increased by this confinement.

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.

Preparation and Mechanical Properties of Rubber/Organoclay Nanocomposites

2011 ◽  
Vol 221 ◽  
pp. 200-204
Author(s):  
Guang Yi Lin ◽  
Ben Fa Gao ◽  
Chuan Sheng Wang
Keyword(s):  
Electron Microscopy ◽  
Mechanical Properties ◽  
Rubber Matrix ◽  
High Tensile Strength ◽  
X Ray Diffraction ◽  
Mechanical Mixing ◽  
X Ray ◽  
Mixing Method ◽  
Mooney Viscosity ◽  
Scanning Electron

The NR/SBR/oranoclay nancomposites were prepared by mechanical mixing method. The dispersion of the oranoclay in the rubber matrix was characterized by X-ray diffraction and scanning electron microscopy. And the effects of different filler and contents on the mechanical properties were investigated. The results showed that the particles of organoclay can be dispersed homogeneously in the rubber matrix. Compbination of carbon black and organoclay shows the synergistic effect which lead to high tensile strength. In addition, organoclay can decrease the Mooney viscosity which is useful for processing. The method is simple, which can be used industrially for use of organoclay in elastomer.

Fabrication and Properties of Machinable AlN-BN Ceramic Nanocomposites

2006 ◽  
Vol 317-318 ◽  
pp. 637-640 ◽  
Author(s):  
Hai Yun Jin ◽  
Wen Wang ◽  
Ji Qiang Gao ◽  
Guan Jun Qiao ◽  
Zhi Hao Jin
Keyword(s):  
Mechanical Properties ◽  
Hot Pressing ◽  
Nitrogen Atmosphere ◽  
Weak Interface ◽  
X Ray Diffraction ◽  
Mechanical Mixing ◽  
X Ray ◽  
N2 Atmosphere ◽  
Nanocomposite Powders ◽  
Better Than

The AlN/h-BN nanocomposite powders were synthesized through the reaction of AlN powder, boric acid (H3BO3) and urea (CO(NH2)2) in a nitrogen atmosphere, and the machinable AlN/BN ceramic nanocomposite s were fabricated by hot-pressing in N2 atmosphere. The existing and distribution of h-BN phase are revealed by X-ray diffraction (XRD), TEM and SEM. For the existing of weak interface between h-BN and AlN grains, the machinability of AlN/BN composites is improved obviously. For the finer microstructures, the mechanical properties and the machinability of the composites with micrometer sized AlN coated with nano-sized BN are better than the AlN/h-BN composite of mechanical mixing type.

Sintering Effect on Mechanical Properties of Composites of Bovine Derived Hydroxyapatite (BHA) with Titanium

2006 ◽  
Vol 309-311 ◽  
pp. 359-362 ◽  
Author(s):  
L.S. Ozyegin ◽  
Oguzhan Gunduz ◽  
Faik N. Oktar ◽  
B. Oz ◽  
Simeon Agathopoulos ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Compression Strength ◽  
High Performance ◽  
X Ray Diffraction ◽  
Metallic Titanium ◽  
Load Bearing ◽  
X Ray ◽  
Properties Of Composites ◽  
Sintering Effect

The aim of this study was to prepare high performance biomaterials suitable for use at load bearing applications with high bioactivity. The hydroxyapatite (HA) was prepared from bovine bones via calcination technique. The bovine derived HA (BHA) was mixed with 5 and 10 wt% metallic titanium (Ti) and the obtained homogenous mixtures were pressed to produce the test samples. The compacts were sintered at temperatures between 1000 and 1300°C. Compression strength, density, and microhardness were measured. SEM and X-ray diffraction studies were also made. The best mechanical properties were obtained between after sintering at 1200-1300°C.

Synthesis and Characterization of Polystyrene-Graphite Nanocomposites via Surface Raft-Mediated Polymerization

2012 ◽  
Vol 463-464 ◽  
pp. 527-532
Author(s):  
Hussein M. Etmimi ◽  
Ronald D. Sanderson
Keyword(s):  
Mechanical Properties ◽  
Miniemulsion Polymerization ◽  
X Ray Diffraction ◽  
X Ray ◽  
Transmission Electron ◽  
Reversible Addition ◽  
Raft Agent ◽  
Polymerization Method ◽  
Better Than

The synthesis of polystyrene/GO (PS-GO) nanocomposites using the reversible addition-fragmentation chain transfer (RAFT) mediated polymerization method is described. The GO was synthesized and immobilized with a RAFT agent to afford RAFT-functionalized GO nanosheets. The RAFT-immobilized GO was used for the synthesis of PS nanocomposites in a controlled manner using miniemulsion polymerization. The moelcular weight and dispersity of the PS in the nanocomposites depended on the amount of RAFT-grafted GO in the system, in accordance with the features of the RAFT-mediated polymerization. X-ray diffraction and transmission electron microscopy analyses revealed that the nanocomposites had exfoliated morphology, even at relatively high GO content. The thermal stability and mechanical properties of the PS-GO nanocomposites were better than those of the neat PS polymer. Furthermore, the mechanical properties of the nanocomposites were dependent on the RAFT grafted GO content.

Research on the Performance of the Cement Stabilized Gravel with Rubber Particles

2013 ◽  
Vol 838-841 ◽  
pp. 57-64 ◽  
Author(s):  
Ruo Chong Yang ◽  
Kai Li ◽  
Ji Peng Zhu ◽  
Shu Kai Ya ◽  
Dong Zheng
Keyword(s):  
Mechanical Properties ◽  
Frost Resistance ◽  
Primary Objective ◽  
Interface Bonding ◽  
X Ray Diffraction ◽  
X Ray ◽  
Rubber Particles ◽  
Micro Morphology ◽  
Better Than ◽  
Sem Analyses

The primary objective of this paper was to study the mechanical properties and durability of the cement stabilized gravel which added rubber particles by using macroscopic and microscopic test. Through tests of compression, splitting and frost resistance, relationships between mechanical properties of samples and rubber particles content were studied. Scanning electron microscope (SEM) was applied to analyze the micro-morphology and elemental composition of samples, X-ray diffraction (XRD) was engaged to identify the product phases. The tests results showed that compressive strength of mixtures decreased with the rubber particles content increasing and the early strength effect was obvious, splitting strength decreased slightly. It also indicated that the addition of rubber particles can improve the frost resistance of the mixtures. As a result, the frozen stability coefficient (K) of samples was improved from 0.89 to 0.97. XRD and SEM analyses showed that calcium silicate hydrate (CSH) was resultant and the interface bonding between sand and CSH was better than rubber particles and CSH, which the latter had interface cracks.

Effect of Annealing Temperature on Austenite Stability of a δ-TRIP Steel

2019 ◽  
Vol 818 ◽  
pp. 82-86
Author(s):  
Xin Xu ◽  
Ren Dong Liu ◽  
Bao Yu Xu ◽  
Hong Liang Yi ◽  
Guo Dong Wang
Keyword(s):  
Mechanical Properties ◽  
Trip Steel ◽  
Retained Austenite ◽  
Annealing Temperature ◽  
Volume Fraction ◽  
X Ray Diffraction ◽  
X Ray ◽  
Austenite Stability ◽  
Poor Stability ◽  
Better Than

In this work, a novel type of δ-TRIP steel was designed, and the content and stability of retained austenite in δ-TRIP specimens under different annealing processes were detected and studied, respectively. The volume fraction of austenite was determined by X-ray diffraction (XRD). The microstructure and mechanical properties were analyzed systematically. The results show that a complex microstructure composed of three phases (ferrite, bainite and retained austenite) was obtained in the δ-TRIP steel. With the increasing of annealing temperature, both retained austenite and bainite content in the specimen increased, while the carbon content in retained austenite decreased, leading to a poor stability for retained austenite. Both tensile and yield strength improved with the increasing of annealing temperature, while the elongation reduced. The feature of retained austenite led to an excellent combination of ductility and strength, which was better than traditional TRIP steel.

Preparation and Properties of Ti5Si3 Matrix Composites Reinforced by Carbon Nanotube

2010 ◽  
Vol 105-106 ◽  
pp. 195-198
Author(s):  
Xin Fang Cui ◽  
Shuang Quan Fang ◽  
Ying Jie Qiao ◽  
Qi Jia
Keyword(s):  
Mechanical Properties ◽  
Carbon Nanotubes ◽  
Bending Strength ◽  
Matrix Composites ◽  
X Ray Diffraction ◽  
X Ray ◽  
Scanning Electron Microcopy ◽  
Main Fracture ◽  
Hot Pressing Sintering ◽  
Properties Of Composites

Ti5Si3 matrix composites reinforced by carbon nanotubes were fabricated by vacuum hot pressing sintering. X-ray diffraction and scanning electron microcopy were carried out to analyze the phase and microstructure of the composites. The effects of carbon nanotubes on mechanical properties were investigated. Experimental results showed that the nanotubes partly reacted with Ti and Si powders to obtain Ti5Si3 and Ti3SiC2, TiSi2 when the sintering temperature is about 1380oC. The mechanical properties of composites can be affected by carbon nanotubes. Meanwhile, the maximal increments of Vickers hardness, bending strength and fracture toughness of the composites, compared with the Ti5Si3 matrix, were 62.9%, 160.9% and 159.3%, respectively. Both of transgranular and intergranular fracture in the composites were the main fracture mode. The fracture manners of composites mainly include “bridging” of CNTs, “deflection” of minor phases and the evolution of grain.

scholarly journals Research on microstructure and forming mechanism of TiC/1Cr12Ni3Mo2V composite based on laser solid forming

Open Physics ◽  
2019 ◽  
Vol 17 (1) ◽  
pp. 334-339
Author(s):  
Wanli Ma ◽  
Fenghe Tao ◽  
Changzhi Jia ◽  
Xiangdong Men
Keyword(s):  
Electron Microscopy ◽  
Volume Fraction ◽  
X Ray Diffraction ◽  
Small Particles ◽  
Microscopic Appearance ◽  
X Ray ◽  
Forming Mechanism ◽  
Laser Solid Forming ◽  
Large Particles ◽  
The Matrix

Abstract Samples of 1Cr12Ni3Mo2V-based composites with different TiC contents (The volume fraction of TiC were 0%, 10%, 20%, 30%, 40%) were prepared based on laser solid forming. Thermodynamic analysis was performed to estimate the possible chemical reactions. Phase analysis and microscopic topography analysis were characterized by optical microscopy (OM), scan electron microscopy (SEM), X-ray diffraction (XRD) and energy dispersive X-ray analysis (EDS). Finally, the formation mechanism of microscopic appearance was analyzed. The results indicate that the TiC particles were successfully dispersed in the matrix. TiC particles mainly exist in two ways in the matrix. The large particles were not completely melted and the small particles were decomposed and then precipitated. Their shape was mainly cross, plum-shaped or dendritic distribution with different TiC contents.

Synthesis and properties of modified rapeseed oil/montmorillonite nanocomposite fatliquoring agent

2011 ◽  
Vol 45 (24) ◽  
pp. 2573-2578 ◽  
Author(s):  
Bin Lü ◽  
Jian-zhong Ma ◽  
Dang-ge Gao ◽  
Lei Hong ◽  
Jing Zhang ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Acrylic Acid ◽  
Flame Retardant ◽  
Rapeseed Oil ◽  
Physical And Mechanical Properties ◽  
X Ray Diffraction ◽  
X Ray ◽  
Flame Retardant Property ◽  
Market Product ◽  
Better Than

Modified rapeseed oil/montmorillonite (MRO/MMT) nanocomposite was prepared by using rapeseed oil, ethylene diamine, acrylic acid, and MMT. In order to compare MRO/MMT with MRO and a market product XQ-F3, they were applied in leather fatliquoring process, respectively. Sensory evaluation, physical and mechanical properties, and flame-retardant property of leather treated with different fatliquoring agents were measured. X-ray diffraction (XRD) results showed that MRO could smoothly enter the interlayer of MMT. The emulsifying property of MRO/MMT was confirmed better than that of MRO. The application results also showed that MRO/MMT has good fatliquoring effect. Meanwhile, it can increase leather strength and improve leather flame-retardant performance.

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