Creation of Basalt Plastics with Different Types of Hybrid Matrices

2021 ◽  
Vol 1037 ◽  
pp. 189-195
Author(s):  
Ekaterina Kosenko ◽  
Natalya Baurova ◽  
Vladimir Zorin
Keyword(s):  
Tensile Strength ◽  
Tensile Tests ◽  
Polymer Materials ◽  
Molding Process ◽  
Organosilicon Polymer ◽  
Deformation Properties ◽  
Different Types ◽  
Plastic Matrix ◽  
Mechanical Tensile ◽  
Technology Of Production

Basalt plastic, thanks to its complex of valuable operational properties, has a potential variety of applications. the article describes the technology of production of basalt plastics with various types of hybrid matrices, one of the components of which is cured in the molding process, and the second-like a binder in natural materials, retains its viscoelastic state. The viscoelastic component makes it possible to increase the deformation properties in the zones of their location, preventing cracking under increased loads. As a result of the conducted mechanical tensile tests, the average values of absolute breaking forces, tensile strength and elongation during fracture of basalt plastic samples with different types of hybrid matrices were obtained. The addition of viscoelastic components (such as technical wax, anaerobic, and organosilicon polymer materials) to the basalt plastic matrix allows to increase the elongation at fracture by 2...5%. Anaerobic polymer material in the basalt plastic matrix allows to increase the tensile strength of the composite material, as well as significantly reduce the dispersion of the measured values. This provides an effective prediction of the operational properties of the structural material in the design of products. On the basis of microanalysis of the structure of basalt plastics with different types of hybrid matrices, an explanation of the causes of changes in the mechanical properties of the resulting composite materials is given.

Investigation of Tensile Strength of Composite Laminate under Diverse Environment Conditions

2015 ◽  
Vol 813 ◽  
pp. 169-180
Author(s):  
Hyoung Seock Seo ◽  
Ho Yun Jang ◽  
Ho Hwan Chun
Keyword(s):  
Tensile Strength ◽  
Environmental Conditions ◽  
Light Exposure ◽  
Salt Water ◽  
Tensile Tests ◽  
Water Spray ◽  
Diverse Environment ◽  
Exposure Experiment ◽  
Xenon Light ◽  
Mechanical Tensile

To investigate ocean environmental effects of salt water and xenon light, salt water spray test and xenon test were performed on long immersion hours. CFRP (Carbon Fiber Reinforced Polymer) specimens were prepared for salt water spray experiment, xenon light exposure experiment and mechanical tensile tests. The composite specimens with total 15 layers were manufactured with diverse fiber orientations of [0°]15, [90°]15 and [0°3/+45°2/-45°2/90°/-45°2/+45°2/0°3]. After applying environmental conditions, the tensile strength was compared with the tensile strength without environmental conditions. The influence of different fiber orientation was also investigated, respectively. Finally, the results showed that the tensile strength of composite specimens was affected by salt water and xenon light clearly.

Chitin for the Replacement of Fluoropolymers in the Assembly of Electrochemical Devices

2018 ◽  
Author(s):  
Catherine King ◽  
Max E. Easton ◽  
Robin D. Rogers
Keyword(s):  
Tensile Strength ◽  
Aqueous Electrolyte ◽  
Composite Films ◽  
Polymer Materials ◽  
Storage Device ◽  
Energy Storage Device ◽  
Environmentally Sustainable ◽  
Electrochemical Devices ◽  
Mechanical Tensile ◽  
And Function

Chitin and graphene/chitin composite films were prepared using ionic liquid processing and tested as separators and electrodes, respectively, in a supercapacitor to demonstrate the construction and function of an energy storage device which is constructed solely from bio-based polymer materials. The dry films possessed high thermal (Td = 265 and 246 °C) and mechanical (tensile strength = 5(1) and 1.7(2) MPa) stabilities. Once soaked in an aqueous electrolyte (2 M (NH4)2SO4) for use in a supercapacitor test cell, the device reached a peak capacitance value of 2.4 F/g. This work demonstrates a first step towards a scalable method for the preparation and assembly of biorenewable electrochemical devices, which avoid the use of unsustainable fluoropolymers and solvents, and is poised to be an important part of environmentally-sustainable economies.

scholarly journals The effect of thermal treatment on the mechanical properties of PLLA tubular specimens

2016 ◽  
Vol 2 (1) ◽  
pp. 27-29 ◽  
Author(s):  
Daniela Arbeiter ◽  
K. Schümann ◽  
O. Sahmel ◽  
T. Eickner ◽  
K.-P. Schmitz ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Thermal Treatment ◽  
Tensile Tests ◽  
Polymer Materials ◽  
Degree Of Crystallinity ◽  
Simultaneous Increase ◽  
Uniaxial Tensile ◽  
Molding Process ◽  
Biodegradable Stents ◽  
Tubular Specimens

AbstractConventional permanent stent systems for vascular applications are associated with long-term risks, such as restenosis and thrombosis. To overcome these limitations, novel approaches using various biodegradable materials for stent construction have been investigated. In this context, thermal treatment of polymer materials is investigated to adjust the mechanical properties of biodegradable stents. In this work polymeric tubular specimens of biodegradable poly(L-lactide) (PLLA) were extruded and subjected to a molding process using different temperatures above glass transition temperature TG. Physicochemical properties of the molded samples were analyzed using DSC measurements and uniaxial tensile tests. The molding process resulted in a weakening of the PLLA tubular specimens with a simultaneous increase in the degree of crystallinity (χ).

scholarly journals Measurement and calculation of the parameters of mechanical properties of silicone rubber

2020 ◽  
pp. 68-71
Author(s):  
S.A. Muslov ◽  
◽  
D.I. Polyakov ◽  
A.I. Lotkov ◽  
A.G. Stepanov ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Silicone Rubber ◽  
Tensile Tests ◽  
Limited Range ◽  
Fracture Deformation ◽  
Cad Cam ◽  
Hyperelastic Model ◽  
Mechanical Tensile ◽  
Model C

The measurement and calculation of the mechanical properties of silicone rubber used for the manufacture of a prosthesis for the auricle of patients based on dental CAD/CAM systems, using a hybrid technology that includes traditional and digital methods of manufacturing medical devices were performed. Mechanical tensile tests were carried out in a climatic chamber at various temperatures: -20; 0; 25; 40 °C. All mechanical characteristics of silicone rubber lay in a very limited range of values and monotonically decreased with increasing test temperature from -20 to + 45°C. At the same time, the elastic characteristics (elastic modulus) decreased by 1.55, deformation (fracture deformation) - by 1.98, strength (tensile strength) - by 2.37 times. The average values of tensile strength were 6.54 MPa, fracture deformation - 1480.61%, modulus of elasticity - 0.53 MPa, and temperature gradient: 0.08 MPa/deg, 14.8%/deg and 0.004 MPa/deg, respectively. In the framework of the Mooney - Rivlin hyperelastic model, the coefficients of the model C 01 and C 10 are determined, which can be used as parameters when performing simulation modeling of the stress-strain state of prostheses. Based on the data obtained, an assessment was made of the cross-linked density of the silicone rubber material as a synthetic polymer. It turned out to be equal to 0.49.

Chitin for the Replacement of Fluoropolymers in the Assembly of Electrochemical Devices

2018 ◽  
Author(s):  
Catherine King ◽  
Max E. Easton ◽  
Robin D. Rogers
Keyword(s):  
Tensile Strength ◽  
Aqueous Electrolyte ◽  
Composite Films ◽  
Polymer Materials ◽  
Storage Device ◽  
Energy Storage Device ◽  
Environmentally Sustainable ◽  
Electrochemical Devices ◽  
Mechanical Tensile ◽  
And Function

Chitin and graphene/chitin composite films were prepared using ionic liquid processing and tested as separators and electrodes, respectively, in a supercapacitor to demonstrate the construction and function of an energy storage device which is constructed solely from bio-based polymer materials. The dry films possessed high thermal (Td = 265 and 246 °C) and mechanical (tensile strength = 5(1) and 1.7(2) MPa) stabilities. Once soaked in an aqueous electrolyte (2 M (NH4)2SO4) for use in a supercapacitor test cell, the device reached a peak capacitance value of 2.4 F/g. This work demonstrates a first step towards a scalable method for the preparation and assembly of biorenewable electrochemical devices, which avoid the use of unsustainable fluoropolymers and solvents, and is poised to be an important part of environmentally-sustainable economies.

scholarly journals STUDY OF DEFORMATION PROPERTIES OF COMPOSITES WITH A HYBRID MATRIX BY THE METHOD OF DYNAMIC AND MECHANICAL ANALYSIS

2021 ◽  
Vol 6 (10) ◽  
pp. 81-89
Author(s):  
E. Kosenko
Keyword(s):  
Mechanical Analysis ◽  
Polymer Materials ◽  
Body Parts ◽  
Liquid Component ◽  
Hybrid Matrix ◽  
Organosilicon Polymer ◽  
Deformation Properties ◽  
The Matrix ◽  
Complex Parts ◽  
Properties Of Composites

Polymer and composite materials (PCMs) are widely used in various industries for production of small but complex parts and large-sized body parts subjected to significant loads. The production of more critical parts from PCM has led to the need to develop new compositions, structures and technologies for molding composites. The manufacturing technology of PCMs with a hybrid matrix is presented, one of the components of which retains its "liquid" state after the molding of the products, and the second is completely solid. In the resulting composite, the “liquid” components form an independent phase and together with the main binder material, the PCMs represent a hybrid matrix. The results of dynamic mechanical analysis (DMA) of basalt plastics with hybrid matrices, in which the composition of the “liquid” component are anaerobic technical wax and organosilicon polymer materials, are presented. DMA is performed on samples of two types: № 1 - samples with a low content of "liquid" components in the matrix and № 2 - samples with a high content of "liquid" components in the matrix. According to the results of the tests carried out, the best characteristics among PCMs with various types of hybrid matrices are possessed by samples with an organosilicon polymer material in the matrix

Investigation of mechanical properties of carbon fiber reinforced plastics with different typed of hybrid matrices at negative temperatures

2001 ◽  
Vol 0 (1) ◽  
pp. 7-11
Author(s):  
E. A. Kosenko ◽  
◽  
N. I. Baurova ◽  
V. A. Zorin ◽  
◽  
...  
Keyword(s):  
Carbon Fiber ◽  
Polymeric Materials ◽  
Tensile Tests ◽  
Fiber Reinforced ◽  
Molding Process ◽  
Reinforced Plastics ◽  
Reinforced Plastic ◽  
Fiber Reinforced Plastics ◽  
Carbon Fiber Reinforced ◽  
Mechanical Tensile

The technology of creating specimens of carbon fiber reinforced plastic with different types of hybrid matrices is described, one of the components of which retains its viscoelastic state, and the second is completely cured during the molding process. Technical wax, anaerobic and organosilicon polymeric materials are accepted as viscoelastic components of the hybrid matrix. The results of mechanical tensile tests of these specimens, performed at temperatures t1 = 20 ± 2 °С and t2 = –30 °С are presented.

Influence of small intestine wall changes after electrically welded anastomoses of different types for the anastomotic tensile strength

2018 ◽  
Vol 0 (3) ◽  
pp. 57-62
Author(s):  
S. S. Podpriatov ◽  
S. E. Podpryatov ◽  
S. G. Gichka ◽  
V. G. Getman ◽  
A. V. Makarov ◽  
...  
Keyword(s):  
Tensile Strength ◽  
Small Intestine ◽  
Different Types

scholarly journals Wastes from Agricultural Silage Film Recycling Line as a Potential Polymer Materials

Polymers ◽  
2021 ◽  
Vol 13 (9) ◽  
pp. 1383
Author(s):  
Jerzy Korol ◽  
Aleksander Hejna ◽  
Klaudiusz Wypiór ◽  
Krzysztof Mijalski ◽  
Ewelina Chmielnicka
Keyword(s):  
Vinyl Acetate ◽  
Thermal Performance ◽  
Mechanical Performance ◽  
Ethylene Vinyl Acetate ◽  
Tensile Tests ◽  
Solid Particles ◽  
Polymer Materials ◽  
Slight Reduction ◽  
Scanning Calorimetry ◽  
Crystallinity Degree

The recycling of plastics is currently one of the most significant industrial challenges. Due to the enormous amounts of plastic wastes generated by various industry branches, it is essential to look for potential methods for their utilization. In the presented work, we investigated the recycling potential of wastes originated from the agricultural films recycling line. Their structure and properties were analyzed, and they were modified with 2.5 wt % of commercially available compatibilizers. The mechanical and thermal performance of modified wastes were evaluated by tensile tests, thermogravimetric analysis, and differential scanning calorimetry. It was found that incorporation of such a small amount of modifiers may overcome the drawbacks caused by the presence of impurities. The incorporation of maleic anhydride-grafted compounds enhanced the tensile strength of wastes by 13–25%. The use of more ductile compatibilizers—ethylene-vinyl acetate and paraffin increased the elongation at break by 55–64%. The presence of compatibilizers also reduced the stiffness of materials resulting from the presence of solid particles. It was particularly emphasized for styrene-ethylene-butadiene-styrene and ethylene-vinyl acetate copolymers, which caused up to a 20% drop of Young’s modulus. Such effects may facilitate the further applications of analyzed wastes, e.g., in polymer film production. Thermal performance was only slightly affected by compatibilization. It caused a slight reduction in polyethylene melting temperatures (up to 2.8 °C) and crystallinity degree (up to 16%). For more contaminated materials, the addition of compatibilizers caused a minor reduction in the decomposition onset (up to 6 °C). At the same time, for the waste after three washing cycles, thermal stability was improved. Moreover, depending on the desired properties and application, materials do not have to go through the whole recycling line, simplifying the process, reducing energy and water consumption. The presented results indicate that it is possible to efficiently use the materials, which do not have to undergo the whole recycling process. Despite the presence of impurities, they could be applied in the manufacturing of products which do not require exceptional mechanical performance.

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