Preparation and mechanical properties of the magnetorheological elastomer based on natural rubber/rosin glycerin hybrid matrix

2013 ◽  
Vol 22 (11) ◽  
pp. 115029 ◽  
Author(s):  
Lin Ge ◽  
Xinglong Gong ◽  
Yanceng Fan ◽  
Shouhu Xuan
Keyword(s):  
Mechanical Properties ◽  
Natural Rubber ◽  
Magnetorheological Elastomer ◽  
Hybrid Matrix

The Study of Magnetorheological Elastomer Based on Natural Rubber (NR)/Polybutadiene Rubber (BR) Hybrid Matrix: Experimental and Numerical Simulation

2019 ◽  
Author(s):  
Xincheng Song ◽  
Wenju Wang ◽  
Fufeng Yang ◽  
Guoping Wang ◽  
Xiaoting Rui
Keyword(s):  
Numerical Simulation ◽  
Natural Rubber ◽  
Smart Materials ◽  
Magnetic Particles ◽  
Mixing Time ◽  
Homogeneous System ◽  
Thermomechanical Analysis ◽  
Magnetorheological Elastomer ◽  
Hybrid Matrix ◽  
Polybutadiene Rubber

Abstract Magnetorheological elastomer (MRE) is a new kind of smart materials whose mechanical properties can be controlled under external magnetic field and it is mainly consist of matrix materials and magnetic particles. In this work, the natural rubber (NR)/polybutadiene rubber (BR) hybrid matrix based MRE were prepared and the compatibility of NR and BR were studied. The hybrid matrix was prepared by physical mixing method. The characterization results showed that the BR had excellent compatibility with NR. The measurement result using rheological showed that the MR effect can be increased to 44.19% by adding of BR. The dynamic thermomechanical analysis showed that the hybrid matrix formed a homogeneous system when the ratio of BR and NR is 1/9 and 3/7. The particles was mixed with matrix using physical technology. The process of mixing was analyzed by numerical simulation. The simulation result showed that the increase of diameter of particles would increase the temperature and velocity of matrix in mixing. The particles was distributed evenly at enough mixing time and the mixing time was decreased with the diameter of particles.

The study of natural rubber/polybutadiene rubber hybrid matrix-based magnetorheological elastomer

2019 ◽  
pp. 089270571987822
Author(s):  
Xincheng Song ◽  
Wenju Wang ◽  
Fufeng Yang ◽  
Guoping Wang ◽  
Xiaoting Rui
Keyword(s):  
Energy Density ◽  
Natural Rubber ◽  
Cohesive Energy ◽  
Md Simulation ◽  
Magnetic Particles ◽  
Homogeneous System ◽  
Magnetorheological Elastomer ◽  
Cohesive Energy Density ◽  
Hybrid Matrix ◽  
Polybutadiene Rubber

Magnetorheological elastomer (MRE) that consists of matrix materials and magnetic particles is a kind of smart material, whose mechanical properties were controllable under external magnetic field. In this work, natural rubber (NR)/polybutadiene rubber (BR) hybrid matrix-based MRE was prepared. The compatibility of NR and BR was studied by experiment and molecular dynamic (MD) simulation. The hybrid matrix was prepared using the physical mixing method. The characterization results showed that BR had excellent compatibility with NR. The measurement result using rheometer showed that the MR effect can be increased to 44.19% by the addition of BR. Dynamic mechanical analysis showed that the hybrid matrix formed a homogeneous system when the ratio of BR and NR is 1:9 and 3:7. The MD simulation showed that the BR and NR are compatible and the cohesive energy density of hybrid matrix was smaller than BR and NR. The cohesive energy density of hybrid matrix was increased with the increase of BR.

scholarly journals Performance of magnetorheological elastomer based green epoxidized natural rubber/sucrose acetate isobutyrate hybrid matrix

2018 ◽  
Vol 342 ◽  
pp. 012034 ◽  
Author(s):  
Muntaz Hana Ahmad Khairi ◽  
Saiful Amri Mazlan ◽  
Siti Aishah Abdul Aziz ◽  
Ubaidillah ◽  
Salihah Tan Shilan
Keyword(s):  
Natural Rubber ◽  
Epoxidized Natural Rubber ◽  
Magnetorheological Elastomer ◽  
Hybrid Matrix

EFFECT OF ZINC DITHIOCARBAMATES AND THIAZOLE-BASED ACCELERATORS ON THE VULCANIZATION OF NATURAL RUBBER

2012 ◽  
Vol 85 (1) ◽  
pp. 120-131 ◽  
Author(s):  
Md. Najib Alam ◽  
Swapan Kumar Mandal ◽  
Subhas Chandra Debnath
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
High Performance Liquid Chromatography ◽  
Liquid Chromatography ◽  
Reaction Mechanism ◽  
Natural Rubber ◽  
High Performance ◽  
Binary Systems ◽  
Synergistic Activity ◽  
Tetramethylthiuram Disulfide

Abstract Several zinc dithiocarbamates (ZDCs) as accelerator derived from safe amine has been exclusively studied in the presence of thiazole-based accelerators to introduce safe dithiocarbamate in the vulcanization of natural rubber. Comparison has been made between conventional unsafe zinc dimethyldithiocarbamate (ZDMC) with safe novel ZDC combined with thizole-based accelerators in the light of mechanical properties. The study reveals that thiuram disulfide and 2-mercaptobenzothiazole (MBT) are always formed from the reaction either between ZDC and dibenzothiazyledisulfide (MBTS) or between ZDC and N-cyclohexyl-2-benzothiazole sulfenamide (CBS). It has been conclusively proved that MBT generated from MBTS or CBS reacts with ZDC and produces tetramethylthiuram disulfide. The observed synergistic activity has been discussed based on the cure and physical data and explained through the results based on high-performance liquid chromatography and a reaction mechanism. Synergistic activity is observed in all binary systems studied. The highest tensile strength is observed in the zinc (N-benzyl piperazino) dithiocarbamate-accelerated system at 3:6 mM ratios. In respect of tensile strength and modulus value, unsafe ZDMC can be successfully replaced by safe ZDCs in combination with thiazole group containing accelerator.

scholarly journals Rheometer Evidences for the Co-Curing Effect of a Bismaleimide in Conjunction with the Accelerated Sulfur on Natural Rubber/Chloroprene Rubber Blends

Polymers ◽  
2021 ◽  
Vol 13 (9) ◽  
pp. 1510
Author(s):  
Marek Pöschl ◽  
Shibulal Gopi Sathi ◽  
Radek Stoček ◽  
Ondřej Kratina
Keyword(s):  
Mechanical Properties ◽  
Natural Rubber ◽  
Tensile Properties ◽  
Crosslinking Agent ◽  
Alder Reaction ◽  
Diels Alder ◽  
Ene Reactions ◽  
Rubber Blends ◽  
Diels Alder Reaction ◽  
Chloroprene Rubber

The rheometer curing curves of neat natural rubber (NR) and neat chloroprene rubber (CR) with maleide F (MF) exhibit considerable crosslinking torque at 180 °C. This indicates that MF can crosslink both these rubbers via Alder-ene reactions. Based on this knowledge, MF has been introduced as a co-crosslinking agent for a 50/50 blend of NR and CR in conjunction with accelerated sulfur. The delta (Δ) torque obtained from the curing curves of a blend with the addition of 1 phr MF was around 62% higher than those without MF. As the content of MF increased to 3 phr, the Δ torque was further raised to 236%. Moreover, the mechanical properties, particularly the tensile strength of the blend with the addition of 1 phr MF in conjunction with the accelerated sulfur, was around 201% higher than the blend without MF. The overall tensile properties of the blends cured with MF were almost retained even after ageing the samples at 70 °C for 72 h. This significant improvement in the curing torque and the tensile properties of the blends indicates that MF can co-crosslink between NR and CR via the Diels–Alder reaction.

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