scholarly journals Influence of basalt fiber on tribological properties of secondary polyethylene terephthalate

2021 ◽  
Vol 100 (2) ◽  
pp. 58-64
Author(s):  
A.-M. Tomina ◽  
◽  
A. Yerоmenko ◽  
V. Makarov ◽  
◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Polyethylene Terephthalate ◽  
Polymer Matrix ◽  
Tribological Properties ◽  
Basalt Fiber ◽  
Fiber Content ◽  
Linear Wear ◽  
Friction Zone ◽  
Initial Polymer ◽  
The Coefficient Of Friction

The article considers the influence of discrete (3 mm) basalt fiber on the tribological properties of secondary agglomerated polyethylene terephthalate. It was found that the introduction of the filler reduces the coefficient of friction and the intensity of linear wear of the initial polymer 1,5 and 4,5 times, respectively, reaching the minimum values at a basalt fiber content of 5 mass.%. The obtained results are due to the fact that the appearance of basalt fiber strengthens the polymer matrix that confirms the increase in hardness by 15%, and inhibits the development of cracks on the surface of the composite. The study of the temperature in the contact zone showed its increase that is due to the low thermal conductivity of the filler (0,064 - 0,096); as a result, there is an accumulation of heat in the friction zone. Further increase in fiber content (up to 10 mass.%) leads to a sharp deterioration of the tribological and physico-mechanical properties of basaltoplastics because of the increase in the defect of the material. It is determined that the effective content of filler in the polymer matrix is 5 mass.%. As a result, this composite was recommended for the manufacture of parts for movable joints of agricultural, automotive and metallurgical equipment.

Preparation of PEEK/MWCNTs composites with excellent mechanical and tribological properties

2018 ◽  
Vol 31 (1) ◽  
pp. 43-50 ◽  
Author(s):  
Yingshuang Shang ◽  
Xian Wu ◽  
Yifan Liu ◽  
Zilong Jiang ◽  
Zhaoyang Wang ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Tribological Properties ◽  
Frictional Coefficient ◽  
Crystallization Rate ◽  
High Strength ◽  
Multiwalled Carbon ◽  
Structural Morphology ◽  
Mechanical And Tribological Properties ◽  
The Coefficient Of Friction ◽  
Properties Of Composites

The high strength of multiwalled carbon nanotubes (MWCNTs) indicates promising properties for industry applications to reduce frictional coefficient and improve mechanical properties, yet few researches have referred to its structural morphology on the thermal, mechanical, and tribological properties of composites. In this work, three different lengths of MWCNTs were used to prepare polyether ether ketone (PEEK) composites and investigate the effect of structural morphology of MWCNTs on the thermal, mechanical, and tribological properties of composites. Different lengths of MWCNTs endowed PEEK composites with different thermal, mechanical, and tribological properties. On thermal and mechanical properties, the incorporation of 10–30 μm length of MWCNTs increased more the effectiveness on the crystallization rate, showing a higher crystallization temperature and the best mechanical properties of the PEEK composites. On tribological properties, approximately 50 μm MWCNTs can effectively decrease adhesive wear, which is a benefit of forming a thin transfer film, thereby effectively decreasing the coefficient of friction and improving the wear resistance.

scholarly journals Effect of Mix Proportion Parameters on Behaviors of Basalt Fiber RPC Based on Box-Behnken Model

2019 ◽  
Vol 9 (10) ◽  
pp. 2031 ◽  
Author(s):  
Hanbing Liu ◽  
Shiqi Liu ◽  
Shurong Wang ◽  
Xin Gao ◽  
Yafeng Gong
Keyword(s):  
Mechanical Properties ◽  
Compressive Strength ◽  
Basalt Fiber ◽  
Fiber Content ◽  
Reactive Powder Concrete ◽  
Basalt Fibers ◽  
Factors Affecting ◽  
Remarkable Effect ◽  
Mix Proportion ◽  
Reactive Powder

Basalt fibers are widely used in the modification of concrete materials due to its excellent mechanical properties and corrosion resistance. In this study, the basalt fibers were used to modify reactive powder concrete (RPC). The effect of four mix proportion parameters on the working and mechanical properties of basalt fiber reactive powder concrete (BFRPC) was evaluated by the response surface methodology (RSM). The fluidity, flexural and compressive strength were tested and evaluated. A statistically experimental model indicated that D (the silica fume to cement ratio) was the key of interactions between factors, affecting other factors and controlling properties of BFRPC. The increase in basalt fiber content had a remarkable effect on increasing the flexural and compressive strength when D = 0.2. The addition of basalt fiber obviously improved the mechanical properties of RPC. While when D = 0.4, the decrease of fiber content and the increase of quartz sand content could increase the compressive strength.

Investigation on mechanical properties and failure mechanisms of basalt fiber reinforced aluminum matrix composites under different loading conditions

2017 ◽  
Vol 52 (14) ◽  
pp. 1907-1914 ◽  
Author(s):  
Yang Zhiming ◽  
Liu Jinxu ◽  
Feng Xinya ◽  
Li Shukui ◽  
Xu Yuxin ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Failure Mechanisms ◽  
Basalt Fiber ◽  
Aluminum Matrix ◽  
Fiber Content ◽  
Aluminum Matrix Composites ◽  
Matrix Composites ◽  
Fiber Reinforced ◽  
Basalt Fibers ◽  
Static Compression

Basalt fiber reinforced aluminum matrix composites with different fiber contents (i.e. 0 wt%, 10 wt%, 30 wt% and 50 wt%) were prepared by hot-press sintering. Microstructure analysis indicates that basalt fibers are uniformly distributed in 10% basalt fiber reinforced aluminum matrix composite. The interfacial bonding between basalt fibers and aluminum matrix is good, and there is no interface reaction between basalt fiber and aluminum matrix. Quasi-static tensile, quasi-static compression and dynamic compression properties of basalt fiber reinforced aluminum composites were studied, and the influences of basalt fiber content on mechanical properties were discussed. Meanwhile, the failure mechanisms of basalt fiber reinforced aluminum matrix composites with different fiber content were analyzed.

Thermal, mechanical, and tribological properties of short carbon fibers/PEEK composites

2017 ◽  
Vol 30 (6) ◽  
pp. 657-666 ◽  
Author(s):  
Fangfang Li ◽  
Ying Hu ◽  
Xiaochen Hou ◽  
Xiyu Hu ◽  
Dong Jiang
Keyword(s):  
Mechanical Properties ◽  
Carbon Fibers ◽  
Tribological Properties ◽  
Mechanical And Tribological Properties ◽  
Lower Viscosity ◽  
Ether Ether Ketone ◽  
Poly Ether Ether Ketone ◽  
The Coefficient Of Friction ◽  
Worn Surface ◽  
Short Carbon

In this work, the effect of thermal, mechanical, and tribological properties of the blending system of different contents of short carbon fibers (SCFs) on different-viscosity poly-ether-ether-ketone (PEEK) was reported. The composites were manufactured using injection molding technique. Mechanical and tribological properties were measured by the tensile strength, the flexural strength, the coefficient of friction, and the wear rate. The results showed that the wear resistance and mechanical properties of the PEEK with the lower viscosity appeared on a more outstanding level, and experimental results showed that PEEK composites with added 10 wt% SCFs were optimal about the tribological behaviors and mechanical properties of the composites. Furthermore, based on scanning electron microscope inspections, the situation of the friction and worn surface of the material was explained.

THE INFLUENCE OF THE ADDITION OF GRAPHITE ON THE TRIBOLOGICAL PROPERTIES OF POLYLACTIC (PLA) APPLIED IN 3D PRINTING TECHNOLOGY

Tribologia ◽  
2018 ◽  
Vol 277 (1) ◽  
pp. 89-93 ◽  
Author(s):  
Wojciech PAWLAK ◽  
Wojciech WIELEBA ◽  
Janusz KLUCZYŃSKI ◽  
Lucjan ŚNIEŻEK
Keyword(s):  
3D Printing ◽  
Tribological Properties ◽  
Testing Machine ◽  
Linear Wear ◽  
Optimal Composition ◽  
Fused Filament Fabrication ◽  
Pin On Disc ◽  
The Coefficient Of Friction ◽  
Steel Disc ◽  
Preliminary Research

The article presents the results of studies on the influence of the addition of graphite to a PLA filament on linear wear and the coefficient of friction. A cylinder of 8 millimetre diameter manufactured in Fused Filament Fabrication process, popularly called 3D printing was used as a specimen. Studies were conducted on pin-on-disc testing machine, in which the cylinders mentioned above were paired with a steel disc – the counter-specimen. Specimens used in research were enriched by 5%, 10%, 20%, and 30% of graphite in comparison to the base filament – Natural PLA, which were not enriched with any additions that could improve its tribological properties. The experiment was conducted as a preliminary research. The gained results create a basis to select the optimal composition of additions to the PLA to create a filament with better tribological properties.

scholarly journals THE EFFECT OF LOAD ON THE TRIBOLOGICAL PROPERTIES OF MAGNESIUM ALLOY WE54 AFTER PRECIPITATION HARDENING

Tribologia ◽  
2017 ◽  
pp. 11-15
Author(s):  
Adrian BARYLSKI ◽  
Krzysztof ANIOŁEK ◽  
Marian KUPKA ◽  
Michał DWORAK
Keyword(s):  
Mechanical Properties ◽  
Magnesium Alloy ◽  
Tribological Properties ◽  
Precipitation Hardening ◽  
Treatment Time ◽  
Ageing Time ◽  
Mechanical Tests ◽  
Linear Wear ◽  
Direct Influence ◽  
Mechanical And Tribological Properties

The paper presents the effect of precipitation hardening on the mechanical and tribological properties of magnesium alloy WE54. Mechanical tests have shown that the hardness and Young’s modulus of the alloy increased as the ageing time became longer. Improvement of the mechanical properties had a direct influence on the tribological properties. Tribological tests were performed on a ball-on-disk tribometer, applying variable loads of 2, 5, and 10 N. In the tests, a more than fourfold decrease in the specific wear rate, a threefold reduction in the linear wear, and a ca. 20% reduction of the friction coefficient were observed. The best results were obtained for ageing time of 24 h. The extension of the heat treatment time to 48h caused overageing of the alloy, which resulted in the deterioration of its mechanical and tribological properties.

scholarly journals Study on Mechanical Properties of Basalt Fiber-Reinforced Concrete with High Content of Stone Powder at High Temperatures

2021 ◽  
Vol 2021 ◽  
pp. 1-15
Author(s):  
Lina Xu ◽  
Daohan Song ◽  
Ning Liu ◽  
Wei Tian
Keyword(s):  
Mechanical Properties ◽  
Compressive Strength ◽  
Reinforced Concrete ◽  
High Temperature ◽  
Unconfined Compressive Strength ◽  
Fiber Length ◽  
Basalt Fiber ◽  
Fiber Content ◽  
Fiber Reinforced Concrete ◽  
Acoustic Response

Concrete materials are an important part of global structure, and their fire resistance directly affects the safety of buildings and tunnels. In this study, basalt fiber was used to reinforce concrete with high content of stone powder in order to enhance its high-temperature performance. The mechanical properties and ultrasonic characteristics at different temperatures were studied using the cube compressive strength test and nonlinear ultrasonic test. The results indicated that the addition of basalt fiber in specimens improved their compressive strength; however, this strength did not continuously increase with increases in the fiber length and fiber content, and the optimal values for fiber length and fiber content were determined to be 12 mm and 1 kg/m3 at 600°C, respectively. With increases in temperature, the unconfined compressive strength increased first and then decreased. When the temperature was 400°C, the unconfined compressive strength of the specimens reached their highest values and then decreased. When the temperature was 400°C and 600°C, the strength of the stone powder concrete with fiber was higher than that without fiber, which shows that fiber can improve the mechanical properties of concrete at high temperatures. Based on the Box-Behnken design (BBD) method, the unconfined compressive strength response regression model of basalt fiber-reinforced concrete with high content of stone powder, which follows parameters including fiber content, fiber length, and temperature at high-temperature environments, was established, and it was found that the interaction of fiber content, fiber length, and the temperature was significant based on multifactor interaction analysis. The analysis of ultrasonic signals based on the S transform showed that, with increases in temperature, the amplitudes of the acoustic response signals, the corresponding frequency spectrum, and the time-frequency spectrum were clearly reduced. At the same temperature, the amplitudes of the acoustic response signals of different concrete testing blocks did not change much and remained at the same level.

scholarly journals Mechanical Properties and Fracture Behavior of Crumb Rubber Basalt Fiber Concrete Based on Acoustic Emission Technology

Sensors ◽  
2020 ◽  
Vol 20 (12) ◽  
pp. 3513 ◽  
Author(s):  
Hanbing Liu ◽  
Wenjun Li ◽  
Guobao Luo ◽  
Shiqi Liu ◽  
Xiang Lyu
Keyword(s):  
Mechanical Properties ◽  
Acoustic Emission ◽  
Fracture Behavior ◽  
Basalt Fiber ◽  
Crumb Rubber ◽  
Fiber Content ◽  
Replacement Rate ◽  
Fiber Concrete ◽  
Binder Ratio ◽  
Water Binder Ratio

Basalt fiber and crumb rubber, as excellent road material modifiers, have great advantages in improving the mechanical properties and fracture behavior of concrete. Acoustic emission (AE) is a nondestructive testing and real-time monitoring technique used to characterize the fracture behavior of concrete specimens. The object of this paper is to investigate the effects of crumb rubber replacement rate, basalt fiber content and water–binder ratio on the mechanical properties and fracture behavior of crumb rubber basalt fiber concrete (CRBFC) based on orthogonal test. The fracture behavior of a CRBFC specimen under three-point flexural conditions was monitored by AE technology and the relative cumulative hit (RCH) was defined to characterize the internal damage degree of CRBFC. The experimental results showed that, considering the mechanical strength and fracture damage behavior of CRBFC, the optimal crumb rubber replacement rate, basalt fiber content and water–binder ratio are 10%, 2 kg/m3 and 0.46, respectively. In addition, it was found that AE parameters can effectively characterize the fracture behavior of CRBFC. The fracture stages of CRBFC can be divided according to the cumulative AE hits and counts. AE amplitude value can be used as an early warning of CRBFC specimen fracture. Moreover, the fracture mode can be identified by RA and average frequency (AF) values variation during the loading process.

Corrosion and tribological properties of basalt fiber reinforced composite materials

2015 ◽  
Vol 29 (06n07) ◽  
pp. 1540021
Author(s):  
Jin Cheol Ha ◽  
Yun-Hae Kim ◽  
Myeong-Hoon Lee ◽  
Kyung-Man Moon ◽  
Se-Ho Park
Keyword(s):  
Composite Materials ◽  
Coefficient Of Friction ◽  
Tribological Properties ◽  
Wear Behavior ◽  
Basalt Fiber ◽  
Metallic Materials ◽  
Fiber Reinforced ◽  
Fiber Reinforced Composite ◽  
Reinforced Composite ◽  
The Coefficient Of Friction

This experiment has examined the corrosion and tribological properties of basalt fiber reinforced composite materials. There were slight changes of weight after the occurring of corrosion based on time and H 2 SO 4 concentration, but in general, the weight increased. It is assumed that this happens due to the basalt fiber precipitate. Prior to the corrosion, friction-wear behavior showed irregular patterns compared to metallic materials, and when it was compared with the behavior after the corrosion, the coefficient of friction was 2 to 3 times greater. The coefficient of friction of all test specimen ranged from 0.1 to 0.2. Such a result has proven that the basalt fiber, similar to the resin rubber, shows regular patterns regardless of time and H 2 SO 4 concentration because of the space made between resins and reinforced materials.

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