scholarly journals Studying the physical and mechanical properties of Acrylonitrile butadiene rubber / carbon / clinke

2021 ◽  
Vol 28 (1) ◽  
pp. 110-116
Author(s):  
Ali Alhaidar ◽  
Ali Ali ◽  
Mayssa Shash
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Abrasion Resistance ◽  
Chemical Properties ◽  
Physical And Mechanical Properties ◽  
Filling Material ◽  
Butadiene Rubber ◽  
Rubber Blends ◽  
Roll Mill ◽  
And Chemical Properties

This research studies the effect of adding the clinker as a filling material on the properties of Acrylonitrilebutadiene rubber NBR ،by means of preparing rubber blends containing different percentage (0,5,10,15,20 Phr) of theclinker (Semi made-cement) ،on two roll mill. Physio -mechanical and chemical properties of the prepared blends weredescribed by testing them for tensile strength and abrasion resistance, values of hardness and swelling in differentsolvents. Results revealed a decrease in the tension resistance for rubber blends c/k at the percentage of 45% withincrease of the percentage of the clinker added with the above mentioned rubber blends ,Also ,values of hardnessdecreased direct proportional at a percentage of 19% with increasing the clinker ,percentage whereas, the frictionresistance decreased at a percentage of 254% with increasing the clinker percentage ,but according to elongation ,theresults were quite different from the previous results so that its percentage increased when cutting gradually with thevalue of 266%when percentage of added clinker increased. Results of the study also, revealed that swelling of thesamples containing only the black carbon (C45K0) was low comparing with the samples containing the clinker.

scholarly journals The effect of barium sulfate as a filler on the physical and mechanical properties of nitrile rubber blends

2021 ◽  
Vol 28 (2) ◽  
pp. 95-101
Author(s):  
Ali Alhaidar ◽  
Ali Ali ◽  
Mayssa Shash
Keyword(s):  
Tensile Strength ◽  
Barium Sulfate ◽  
Chemical Properties ◽  
Physical And Mechanical Properties ◽  
Elongation At Break ◽  
Friction Resistance ◽  
Rubber Blends ◽  
Hardness Values ◽  
Resistance Value ◽  
And Chemical Properties

In this study, the effect of adding barium sulfate as a filler in the properties of NBR has been studied bypreparing blends of rubber containing different proportions of barium sulfate ( 20 0 phr) , ,1,3,5,10,15, on two roll millthen describe Physio - mechanical and chemical properties of the prepared blends were described by testing them fortensile strength and abrasion resistance, value of hardness and swelling in different solvents. The results showed anincrease in tensile strength by (6.1%) with an increase in the percentage of barium sulfate within the rubber mixturesuntil (1phr), then the tensile strength decreased with an increase in the ratio of barium sulfate in the rubbercompositions over (1phr). As for elongation at break, it gradually increased by (74.4%) at the rate of adding (1 phr)and then decreased with increasing the percentage of barium sulfate to (phr5) and then increased with the increase ofbarium sulfate. While the hardness values decreased by (14.9%) with the increase in the percentage of barium sulfateto the ratio of (phr20), friction resistance also decreased by (45.83%) with an increase in the percentage of bariumsulfate to (phr20). The results of the study also showed that the productivity of samples containing black carbon only(C45B0) was very low compared to samples containing barium sulfate.

Novel modification of styrene butadiene rubber/acrylic rubber blends to improve mechanical, dynamic mechanical, and swelling behavior for oil sealing applications

2021 ◽  
pp. 096739112110313
Author(s):  
Ahmed Abdel-Hakim ◽  
Soma A el-Mogy ◽  
Ahmed I Abou-Kandil
Keyword(s):  
Mechanical Properties ◽  
Crosslink Density ◽  
Physical And Mechanical Properties ◽  
Dynamic Mechanical Properties ◽  
Styrene Butadiene Rubber ◽  
Butadiene Rubber ◽  
Rubber Blends ◽  
Dynamic Mechanical ◽  
Oil Resistance ◽  
Styrene Butadiene

Blending of rubber is an important route to modify properties of individual elastomeric components in order to obtain optimum chemical, physical, and mechanical properties. In this study, a novel modification of styrene butadiene rubber (SBR) is made by employing acrylic rubber (ACM) to obtain blends of outstanding mechanical, dynamic, and oil resistance properties. In order to achieve those properties, we used a unique vulcanizing system that improves the crosslink density between both polymers and enhances the dynamic mechanical properties as well as its resistance to both motor and break oils. Static mechanical measurements, tensile strength, elongation at break, and hardness are improved together with dynamic mechanical properties investigated using dynamic mechanical analyses. We also proposed a mechanism for the improvement of crosslink density and consequently oil resistance properties. This opens new opportunities for using SBR/ACM blends in oil sealing applications that requires rigorous mechanical and dynamic mechanical properties.

scholarly journals Effects of Sulfur Curing Systems on Mechanical Properties of NR/SBR Rubber Blends

2019 ◽  
Author(s):  
Ruogu Tang
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Abrasion Resistance ◽  
Relative Volume ◽  
Curing Time ◽  
High Modulus ◽  
Elongation At Break ◽  
Tear Strength ◽  
Rubber Blends ◽  
Curing Systems

<div>A series of NR/SBR vulcanizates were prepared by conventional vulcanization (CV), effective vulcanization (EV) and semi-effective vulcanization (SEV) respectively basing on each formulation and optimum curing time. We examined the mechanical properties of NR/SBR vulcanizates including tensile strength, tear strength, elongation at break, modulus, Shore A hardnessand and relative volume abrasion. The results indicated that NR/SBR vulcanizates prepared in different systems differed in mechanical properties. Vulcanizates prepared via CV showed higher tensile and tear strength; vulcanizates prepared via EV had high modulus and hardness, and vulcanizates prepared via SEV performed high abrasion resistance. </div>

scholarly journals Rubber Material Properties of Several Rubber Tree Strains

2019 ◽  
Vol 136 ◽  
pp. 03001
Author(s):  
Wang Kaidian ◽  
Han Quanhui ◽  
Lu qingzhi ◽  
Chen Zhanxiong ◽  
Li Jianhui ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Rubber Tree ◽  
Chemical Properties ◽  
Physical And Mechanical Properties ◽  
Physical And Chemical Properties ◽  
Rubber Material ◽  
Vulcanized Rubber ◽  
Processing Properties ◽  
Physical And Chemical ◽  
And Chemical Properties

：The rubber from rubber tree strain reyan 8-79 (hainan), zhanshi 218-6 (guangdong), yunyan 73-46 and yunyan 75-11 (yunnan) were tested to determine the physical and chemical properties, processing properties of raw rubber and physical and mechanical properties of vulcanized rubber. The results showed that raw rubber from different tree strains had different physical and chemical properties, processing properties,andthe physical and mechanical properties of vulcanized rubber were different as well. Yunyan 75-11 had the highest mooney viscosity, Reyan 8-79 had the highest protein content, Zhanshi 218-6 had the best tensile and tearing strength, Yunyan 73-46 had small elastic modulus, large loss factor and good processing properties.

The Influence of Microbicidal Components of Essential Oils on the Properties of the Cellulose and Lignocellulose Materials

2016 ◽  
Vol 688 ◽  
pp. 90-95 ◽  
Author(s):  
Ondřej Mikala ◽  
Miloslav Milichovský ◽  
Jan Gojný ◽  
Matěj Hájek
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Essential Oils ◽  
Biological Effects ◽  
Chemical Properties ◽  
Colour Difference ◽  
Ph Change ◽  
Cellulose Materials ◽  
Predetermined Time ◽  
And Chemical Properties

Biological effects of essential oils are investigated for many years. This work is focused on exploring the influence of saturated vapours components of essential oils on the mechanical, optical and chemical properties of cellulose and lignocellulose materials. Diluted vapours of active ingredients of essential oils could be used in future to protect archives made of cellulose materials. For testing were chosen ingredients of essential oils, that showed the highest bactericidal activity. Saturated vapours of these components act on selected cellulose and lignocellulose materials for a predetermined time. From the mechanical properties were measured tensile strength, bending stiffness and compressive strength. Optical properties are represented by the colour difference ∆E and chemical properties by pH change.

scholarly journals Physical and Mechanical Properties of Rural-Road Pavement Concrete in South Korea Containing Air-Cooled Blast-Furnace Slag Aggregates

2021 ◽  
Vol 11 (12) ◽  
pp. 5645
Author(s):  
Byung-Hwan Ahn ◽  
Su-Jin Lee ◽  
Chan-Gi Park
Keyword(s):  
Mechanical Properties ◽  
Chemical Properties ◽  
Physical And Mechanical Properties ◽  
Physical And Chemical Properties ◽  
Air Content ◽  
Road Pavement ◽  
Performance Requirements ◽  
Rural Road ◽  
Physical And Chemical ◽  
And Chemical Properties

The purpose of this study was to assess the physical and mechanical properties of pavement concrete for rural roads of South Korea made with air-cooled slag aggregate, which is an industrial byproduct. This study assessed the physical and chemical properties according to the following performance requirements based on the design criteria of the Korea Ministry of Agriculture’s Agricultural Production Infrastructure Maintenance Business Plan and the Korea Expressway Corporation’s Highway Construction Specialized Specifications: slump of 80 mm or greater, air content of 4.5 ± 1.5%, compressive strength of at least 21 MPa, splitting tensile strength of at least 4.2 MPa, and a chloride penetration resistance of less than 4000 C. The slump, air content, compressive strength, splitting tensile strength, flexural strength, and chloride ion permeability of the aggregate-containing concretes were measured. The air-cooled slag aggregates provided the necessary physical and chemical properties and presented no environmental issues. Furthermore, the slump and air content of concrete made with the aggregates met the target values. The slump decreased and the air content increased with increasing amounts of air-cooled slag aggregate. Mechanical testing of the concretes containing air-cooled slag aggregate established that they met the performance requirements for rural road pavement.

scholarly journals Preparation of Semipermeable polyvinylpyrrolidone Membranes and Study Their Chemical, Physical and Mechanical Properties: تحضير أغشية نصف نفوذة من بولي فينيل بيروليدون ودراسة خواصها الكيميائية والفيزيائية والميكانيكية

2020 ◽  
Vol 4 (4) ◽  
Author(s):  
Khatoon Khalil Al-Hamad, Fawaz Ahmad Al- Deri, Ahmad Mohamd
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Phase Inversion ◽  
Chemical Properties ◽  
Physical And Mechanical Properties ◽  
Inversion Process ◽  
Semipermeable Membranes ◽  
Ph Range ◽  
Flat Membranes ◽  
Phase Inversion Process

Been we had prepared three semipermeable membranes with different concentration of polyvinylpyrrolidone by the phase inversion process. This way is a basic method to get flat membranes. the membranes were tested for chemical properties (pH rang), and physical properties (viscosity and porosity), and mechanical properties (tensile strength and strain), The results showed that polyvinylpyrrolidone (8%, 12%,15%) membrane having the higher pH range, while the polyvinylpyrrolidone (15%) membrane having the higher tensile strength and strain, but it was having the lowest porosity, viscosity was measured in low concentration was showed that polyvinylpyrrolidone (2%) solution having the higher viscosity.

scholarly journals Enhanced Physical and Mechanical Properties of Nitrile-Butadiene Rubber Composites with N-Cetylpyridinium Bromide-Carbon Black

Molecules ◽  
2021 ◽  
Vol 26 (4) ◽  
pp. 805
Author(s):  
Egor A. Kapitonov ◽  
Natalia N. Petrova ◽  
Vasilii V. Mukhin ◽  
Leonid A. Nikiforov ◽  
Vladimir D. Gogolev ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Carbon Black ◽  
Physical And Mechanical Properties ◽  
Butadiene Rubber ◽  
Volumetric Wear ◽  
Shore Hardness ◽  
Cetylpyridinium Bromide ◽  
Rubber Composites ◽  
Nitrile Butadiene Rubber

The physical and mechanical properties of nitrile–butadiene rubber (NBR) composites with N-cetylpyridinium bromide-carbon black (CPB-CB) were investigated. Addition of 5 parts per hundred rubber (phr) of CPB-CB into NBR improved the tensile strength by 124%, vulcanization rate by 41%, shore hardness by 15%, and decreased the volumetric wear by 7% compared to those of the base rubber-CB composite.

scholarly journals Enhanced Mechanical Properties and Microstructure of Accumulative Roll-Bonded Co/Pb Nanocomposite

Nanomaterials ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 1190
Author(s):  
Maryam Karbasi ◽  
Eskandar Keshavarz Alamdari ◽  
Elahe Amirkhani Dehkordi ◽  
Zulfiqar A. Khan ◽  
Fariborz Tavangarian
Keyword(s):  
Mechanical Properties ◽  
Plastic Deformation ◽  
Particle Size ◽  
Tensile Strength ◽  
Severe Plastic Deformation ◽  
Chemical Properties ◽  
Uniform Structure ◽  
Roll Bonding ◽  
Grain Sizes ◽  
And Chemical Properties

Lead composites have been used as anodes in the electrowinning process to produce metals such as copper and zinc. Manufacturing stable lead anodes with appropriate mechanical and chemical properties is required to improve the performance of the electrowinning process. In this study, an accumulative roll bonding (ARB) method was used to fabricate a Co/Pb nanocomposite. Utilizing the ARB method can help us to achieve a uniform structure with enhanced mechanical properties via severe plastic deformation. The results showed that suitable tensile properties were obtained in Pb–0.5%Co–10pass samples. The tensile strength and strain of these samples were 2.51 times higher and 83.7% lower than that of as-cast pure Pb. They also showed creep resistance and hardness up to 1.8 and 2.5 times more than that of as-cast pure Pb. The ARB technique uniformly distributed Co particles in the Pb matrix. The enhanced strength of Pb samples was observed in the composite including grain sizes of less than 50 nm as a result of hindering the recovery phenomenon. The particle size of the Co distributed in the Pb matrix was 353 ± 259 nm. Compared to conventional methods, the ARB process improved the mechanical properties of Co/Pb composites and can open a new horizon to fabricating this composite in metal industries.

scholarly journals STRENGTH OF MULTILAYER POLYMER PIPE TAKING INTO ACCOUNT CHANGE IN PHYSICAL AND MECHANICAL PROPERTIES OF THE MATERIAL

2021 ◽  
Vol 2 (11(75)) ◽  
pp. 68-77
Author(s):  
G. Aliyev ◽  
A. Aliyev
Keyword(s):  
Mechanical Properties ◽  
Adhesive Strength ◽  
Chemical Properties ◽  
Physical And Mechanical Properties ◽  
Mechanical Effect ◽  
Polymer Materials ◽  
Physical And Chemical Properties ◽  
Physical And Chemical ◽  
External Loads ◽  
And Chemical Properties

Strength if a multilayer polymer pipe under the action of the system if external loads is studied taking into account the change in physical and mechanical properties of the material. Mechanical effect, the dependence of joint deformability of several polymer materials on the character of change if their physical and chemical properties was established. Occurrence and dependence of physical and chemical properties of the material and also breaking stresses between the layer determining adhesive strength of layered polymer pipe was established.

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