Utilization of tyre rubber hybrid with ceramic and wood for impact energy absorption application

2021 ◽  
pp. 096739112110080
Author(s):  
M Sermaraj ◽  
K Ramanathan ◽  
A Athijayamani
Keyword(s):  
Composite Materials ◽  
Impact Strength ◽  
Impact Energy ◽  
Rubber Particle ◽  
Resin Matrix ◽  
Wood Dust ◽  
Neat Resin ◽  
Resin Sample ◽  
Morphological Studies ◽  
The Impact

The used tyre rubber, scrap ceramic tiles and wood dust are largely dumped into landfills, which create environmental pollution to the surrounding. The recycling of tyre rubber is very limited, but it has good property to absorb the impact energy. Hence, these materials are used to prepare the composite in the present work. Composite materials were prepared by the resin transfer moulding method with different weight percentage of particles. The tensile, flexural and impact strength of composite specimens were compared with other combination of composites and also with the neat resin sample specimen. The tensile and flexural strength of composites were decreased with the addition of the rubber. But, the rubber particle with the ceramic in the resin matrix increases the impact strength of composite by 45.91% when compared with the neat resin sample. The addition of rubber enhances the impact strength of composite materials with all the combination of particles. The better distribution and good interfacial adhesion of particles with a resin matrix along the fractured surface were observed by the scanning electron microscope. And also, the nature of failure was identified by morphological studies.

scholarly journals The Regression Models of Impact Strength of Coir Coconut Fiber Reinforced Resin Matrix Composite Materials

2020 ◽  
Vol 1 (1) ◽  
pp. 32-38
Author(s):  
Muhamad Fitri ◽  
Shahruddin Mahzan
Keyword(s):  
Composite Materials ◽  
Impact Strength ◽  
Matrix Composite ◽  
Fiber Length ◽  
Natural Fibers ◽  
Fiber Content ◽  
Resin Matrix ◽  
Coconut Fiber ◽  
Resin Matrix Composite ◽  
The Impact

The need of coconuts in Indonesia is relatively high. The use of large quantities of coconuts produces large amounts of organic waste from coco fiber, which tends to become waste if it is not used to be beneficial for humans.One of the potential uses of coconut fiber is as a reinforcement of natural fibers in polymer matrix composite materials. Recently, the applications of composite materials have been expanded widely including structural angine component which whitstand certain load like impact load. But most of them used synthetic fiber. Although the use of natural fibers as reinforcement in composite materials has been widely studied, their use is still limited because natural fibers have their own advantages and disadvantages. The purpose of this study was to measure the impact strength of specimens of coconut fiber reinforced polymer matrix composite material, and to determine the effect of the length and concentration of coconut fiber on its impact strength. A significant and valid regression model was also generated in this research, that states the relationship between fiber length and fiber content of resin matrix composite material to its impact strength. The result shows that the impact strength of the samples were influenced by fiber content and fiber length. The regression models for the impact strength of  resin composite reinforced with coconut fiber is Y = 4.44 +0.180 X1 – 0.52 X2  Where: Y = Impact Strength (kJ/m2), and X1= Fiber length (mm), and X2= Fiber content (%).

A Review on Non-Asbestos Friction Materials: Material Composition and Manufacturing

2018 ◽  
Vol 1150 ◽  
pp. 22-42
Author(s):  
Dinesh Shinde ◽  
Kishore N. Mistry ◽  
Suyog Jhavar ◽  
Sunil Pathak
Keyword(s):  
Composite Materials ◽  
Material Properties ◽  
Single Phase ◽  
Friction Material ◽  
Material Surface ◽  
Surface Wear ◽  
Friction Modifier ◽  
Friction Materials ◽  
Morphological Studies ◽  
The Impact

The peculiar feature of friction materials to absorb the kinetic energy of rotating wheels of an automobile to control the speed makes them remarkable in automobile field. The regulation of speed cannot be achieved with the use of single phase material as a friction material. Consequently, the friction material should be comprised of composite materials which consist of several ingredients. Incidentally, the friction materials were formulated with friction modifier, binders, fillers and reinforcements. Due to its pleasant physical properties, asbestos was being used as a filler. Past few decades, it is found that asbestos causes dangerous cancer to its inhaler, which provides a scope its replacement. Several attempts have been made to find an alternative to the hazardous asbestos. The efforts made by different researchers for the impact of every composition of composite friction material in the field are reviewed and studied for their effect on the properties of friction material. Surface morphological studies of different friction material are compared to interpret the concept of surface wear and its correlation with material properties.

scholarly journals ANALISIS KEKUATAN TARIK DAN IMPAK MATERIAL KOMPOSIT POLIMER DALAM APLIKASI FIBERBOAT

2021 ◽  
Vol 4 ◽  
pp. 121-126
Author(s):  
Rezza Ruzuqi ◽  
Victor Danny Waas
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Composite Materials ◽  
Impact Strength ◽  
Metal Corrosion ◽  
Phase System ◽  
Low Density ◽  
Weight Percentage ◽  
Multi Phase ◽  
The Impact

Composite material is a material that has a multi-phase system composed of reinforcing materials and matrix materials. Causes the composite materials to have advantages in various ways such as low density, high mechanical properties, performance comparable to metal, corrosion resistance, and easy to fabricate. In the marine and fisheries industry, composite materials made from fiber reinforcement, especially fiberglass, have proven to be very special and popular in boat construction because they have the advantage of being chemically inert (both applied in general and marine environments), light, strong, easy to print, and price competitiveness. Thus in this study, tensile and impact methods were used to determine the mechanical properties of fiberglass polymer composite materials. Each test is carried out on variations in the amount of fiberglass laminate CSM 300, CSM 450 and WR 600 and variations in weight percentage 99.5% -0.5%, 99% -1%, 98.5% -1, 5%, 98% -2% and 97.5%-2.5% have been used. The results showed that the greater the number of laminates, the greater the impact strength, which was 413,712 MPa, and the more the percentage of hardener, the greater the impact strength, which was 416,487 MPa. The results showed that the more laminate the tensile strength increased, which was 87.054 MPa, and the more the percentage of hardener, the lower the tensile strength, which was 73.921 MPa.

scholarly journals THE EFFECT OF COCONUT COIR FIBER POWDER CONTENT AND HARDENER WEIGHT FRACTIONS ON MECHANICAL PROPERTIES OF AN EPR-174 EPOXY RESIN COMPOSITE

SINERGI ◽  
2021 ◽  
Vol 25 (3) ◽  
pp. 361
Author(s):  
Muhamad Fitri ◽  
Shahruddin Mahzan ◽  
Imam Hidayat ◽  
Nurato Nurato
Keyword(s):  
Mechanical Properties ◽  
Shear Strength ◽  
Composite Materials ◽  
Impact Strength ◽  
Epoxy Resin ◽  
Resin Composite ◽  
Weight Fraction ◽  
Resin Matrix ◽  
Powder Content ◽  
Made In

The development of composite materials is increasingly widespread, which require superior mechanical properties. From many studies, it is found that the mechanical properties of composite materials are influenced by various factors, including the reinforcement content, both in the form of fibers and particle powder. However, those studies have not investigated the effect of the hardener weight fraction on the mechanical properties of resin composite materials. Even though its function as a hardener is likely to affect its mechanical properties, it might obtain the optimum composition of the reinforcing content and hardener fraction to get the specific mechanical properties. This study examines the effect of hardener weight fraction combined with fiber powder content on mechanical properties of EPR-174 epoxy resin matrix composite and determines the optimum of Them. The research was conducted by testing a sample of composite matrix resin material reinforced with coconut fiber powder. The Powder content was made in 3 levels, i.e.: 6%, 8%, and 10%. While the hardener fraction of resin was made in 3 levels, i.e.: 0.4, 0.5, and 0.6. The test results showed that pure resin had the lowest impact strength of 1.37 kJ/m2. The specimen with a fiber powder content of 6% has the highest impact strength i.e.: 4.92 kJ/m2. The hardener fraction of 0.5 has the highest impact strength i.e.: 4.55 kJ/m2. The fiber powder content of 8% produced the highest shear strength i.e.: 1.00 MPa. Meanwhile, the hardener fraction of 0.6 has the highest shear strength i.e.: 2.03 MPa.

The Effect of Chitosan Addition in Acrylic Resin Matrix towards the Residual Monomers and Impact Strength

2021 ◽  
pp. 2280-2285
Author(s):  
Titik Ismiyati ◽  
Ananto Ali Alhasyimi
Keyword(s):  
Acrylic Acid ◽  
Impact Strength ◽  
Charpy Impact ◽  
Acrylic Resin ◽  
Test Sample ◽  
Acid Group ◽  
Resin Matrix ◽  
Residual Monomer ◽  
Group 2 ◽  
The Impact

Background: A residual monomer might have impact on the quality of acrylic resin since its caused allergic reactions and inflammation. Chitosan is a biocompatible material and potential to reduce residual monomers and ameliorate the impact strength of acrylic resin Objective of the study: To examine the effect of an acrylic resin matrix mixed with chitosan together with 1% and 2% acrylic acid as denture base and orthodontic material on residual monomers and impact strength. Methodology: There were 30 samples for the test analysis. The impact strength test sample formed with a plate size of 55 × 10 × 10mm, whereas the residual monomer test sample was prepared into powder. The test samples were divided into 3 groups, of 10 samples. Group 1 acrylic resin only, group 2 acrylic resin matrix mixed with chitosan and 1% acrylic acid, group 3 is the same as group 2 but with a concentration of 2% acrylic acid. Gas chromatography was used for measuring the residual monomers. The impact strength was tested by the Charpy impact. The data was evaluated using the ANOVA and correlation test. Results: There were significant differences (p < 0.05) in acrylic resin without addition with the matrix of acrylic resin with chitosan and acrylic acid 1% and 2% to the number of monomers and impact strength. Conclusion: The mixture of acrylic resin with chitosan and acrylic acid 1% and 2% can reduce the amount of residual monomer and increase the impact strength.

scholarly journals Perubahan kekuatan impak resin akrilik polimerisasi panas dalam perendaman larutan cuka apel

2010 ◽  
Vol 9 (1) ◽  
pp. 13
Author(s):  
Suguh Bhaktiar Pribadi ◽  
Moh. Yogiartono ◽  
Titien Hary Agustantina
Keyword(s):  
Impact Strength ◽  
Acrylic Resin ◽  
Control Groups ◽  
Resin Sample ◽  
Treatment Groups ◽  
The Impact

Acrylic resin being has been used in dentistry since 1946. Apple vinegar solutioncurrently popular as healthy supplement drink. It consists of tanin (fenol), acid, andother subtances. Fenol and acid are able to chemically damage to acrylic resin. Thepurpose of this study was to investigate the impact strength of heat cured acrylic resinafter immersed in apple vinegar solution. This experiment was carried out on the heatcured acrylic resin sample of size 65 x 10 x 2.5 mm. The immersion periods variedfrom 45 minutes, 11 days, and 17 days. There were 42 samples, divided into 21samples for three treatment groups and 21 samples for three control groups. Theresult showed that there were significant differences of acrylic resin strength afterimmersion in apple vinegar at 45 minutes and 17 days. The conclusion was the longerimmersion time of acrylic resin in apple vinegar would reduce the impact strength.

scholarly journals Increasing the Performance of a Fiber-Reinforced Concrete for Protective Facilities

Fibers ◽  
2021 ◽  
Vol 9 (11) ◽  
pp. 64
Author(s):  
Roman Fediuk ◽  
Mugahed Amran ◽  
Sergey Klyuev ◽  
Aleksandr Klyuev
Keyword(s):  
Reinforced Concrete ◽  
Impact Strength ◽  
Impact Energy ◽  
Fiber Reinforced Concrete ◽  
Fiber Reinforced ◽  
Secondary Cracks ◽  
Wide Range ◽  
Long Time ◽  
The Impact ◽  
Hardening Coefficient

The use of fiber in cement materials is a promising and effective replacement for bar reinforcement. A wide range of fiber-reinforced concretes based on composite binders with increased impact strength characteristics have been developed. The synthesized composites included the composite binder made of Portland cement, silica, and carbonate additives. Basalt and steel were used as fibers. The nature of the influence of the composition and manufacturing technology of cement composites on the dynamic hardening coefficient has been established, while the growth of these indicators is achieved by creating a denser interfacial transition zone between the cement paste, aggregate, and fiber as a result of improving the homogeneity of the concrete mixture and controlling the consistency. Workability indicators (slump flow up to 730 mm; spreading time up to a diameter of 50 cm is up to 3 s) allow them to be classified as self-compacting concrete mixtures. An increase in the values of the impact strength coefficient by a factor of 5.5, the dynamic hardening coefficient by almost 70% as a result of interfacial interaction between fibers and binder matrix in the concrete composite, as well as absorption of impact energy by fiber, was revealed. The formula describing the effect of the loading rate on the coefficient of dynamic hardening of fiber-reinforced concrete has been refined. The fracture processes of the obtained materials have been established: after the initiation of primary cracks, the structure of the composite absorbs impact energy for a long time, while in the inelastic range (the onset of cracking and peak loads), a large number of secondary cracks appear.

scholarly journals Classification of energy impacts by their effect on the structure and properties of reinforced reactoplasts

2021 ◽  
Vol 83 (2) ◽  
pp. 197-201
Author(s):  
I. V. Cheremukhina
Keyword(s):  
Composite Materials ◽  
Impact Strength ◽  
Polymer Composite ◽  
Polymer Composite Material ◽  
Polymer Chains ◽  
Polymer Composite Materials ◽  
Mesh Structure ◽  
Wave Nature ◽  
The Impact

The use of various physical influences is an economical and highly effective direction for regulating and improving the characteristics of the modified reinforced polymer composite materials developed in this work. The methods of energy effects studied in this work were used at the stage of impregnation of technical threads of various chemical nature with an oligomeric binder and a hardener (when preparing prepregs by the traditional method) or with a binder solution and a curing system (when preparing prepregs by the method of layered application of components) Based on the conducted research, a classification of the applied methods of physical modification according to the principle of the influence of energy fields is proposed. The studied methods of energy effects are divided into orienting and energetically energizing effects. The first group includes treatments with constant magnetic (PMP) or electric fields (PEP), and constant mechanical loads. The second group includes energy effects that have a wave nature (energetically energizing), and vibration, ultrasonic effects, and ultraviolet radiation are attributed to them. Modification methods of the first group contribute to a decrease in the mobility of binder molecules during curing, while the formation of branches of polymer chains occurs during the curing process, which leads to a predominant increase in the destructive stress during static bending. Energetically energizing effects contribute to the relative acceleration of the process of linear growth of polymer chains during curing, which is accompanied by the formation of a more sparsely cross-linked mesh structure, which leads to a predominant increase in impact strength. Of the two competing processes in the curing of epoxy oligomers, this one requires a higher activation energy, which is confirmed by the results of studies. Analyzing the results obtained, it can be concluded that the modification methods used in the work allow not only to obtain polymer composite materials with high strength characteristics, but also to directly adjust the properties of composites depending on the requirements for the products. Orienting modification methods lead to hardening of the resulting polymer composite material with a predominant increase in the destructive stress during static bending from 20 to 47%. When using energetically energizing influences in the technology of producing reinforced reactoplasts, the impact strength increases mainly from 19 to 40%.

Improvement of Impact Strength of Polyglycolic Acid for Self-Degradable Tools for Low-Temperature Wells

2015 ◽  
Author(s):  
Masayuki Okura ◽  
Shinya Takahashi ◽  
Takuma Kobayashi ◽  
Hikaru Saijo ◽  
Takeo Takahashi
Keyword(s):  
Low Temperature ◽  
Impact Strength ◽  
Recovery Process ◽  
Polyglycolic Acid ◽  
Suitable Material ◽  
Well Completion ◽  
Morphological Studies ◽  
Completion Process ◽  
The Cost ◽  
The Impact

Abstract Recent increases in the stage count of hydraulic fracturing has increased the time and cost for well completion. Simplifying time-consuming processes is crucial for economic success. The use of degradable materials for components of downhole tools has several advantages, such as eliminating or simplifying the recovery process of the tools. Polyglycolic acid (PGA), a hydrolyzable polymer, is a suitable material for these components. PGA has already been used in frac balls because of its high mechanical strength and appropriate degradation characteristics. However, in low-temperature wells close to the glass transition temperature of PGA, there are problems with tool breakage during installation or stimulation because of the changes in the mechanical properties of PGA at low temperatures. This paper focuses on the improvement of the impact strength of PGA. A study of modifiers identified the additives that are highly compatible with PGA. Morphological studies of mixtures showed finely dispersed additive domains within a PGA matrix. The impact strength of the mixture was twice as high as that of neat PGA. A formulation was identified that optimized the impact strength while retaining degradability, processability, and machinability similar to that of neat PGA. The improvement of the impact strength broadens the range of applications that PGA tooling is suitable for and helps to reduce the cost and time of the well completion process.

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