Study of the Influence of the Forming Method on the Physical and Mechanical Characteristics of Thermoplastic Polymeric Materials

2020 ◽  
Vol 869 ◽  
pp. 342-347
Author(s):  
Anton M. Kuzmin ◽  
Vladimir N. Vodyakov ◽  
Alexandr V. Kotin ◽  
Vyacheslav V. Kuznetsov ◽  
Mariya I. Murneva
Keyword(s):  
Testing Machine ◽  
Physical And Mechanical Properties ◽  
Polymeric Materials ◽  
Thermoplastic Elastomer ◽  
Hydraulic Press ◽  
Polymer Materials ◽  
Tensile Testing Machine ◽  
Strength Tests ◽  
Twin Screw ◽  
Injection Methods

This paper presents the results of the study of the effect of polymer materials compression and injection methods of molding on the physical and mechanical properties of the resulting samples. Widely used polymers such as poly-amide, thermoplastic elastomer and polyketone were taken as the objects of study. Granite composites based on polyamide were produced by PolyLab Rheomex RTW 16 twin-screw extruder, then modified with fine powders of schungite, graphite and silicon dioxide. Samples for testing in the form of double-sided blades were obtained by injection molding on a Babyplast 6/10V machine and compression molding on a Gibitre hydraulic press. Elastic-strength tests of the obtained samples were carried out on a tensile testing machine UAI-7000 M.

Influence of Injection Rate on Mechanical Properties of the Molding Composition Based on Polyamide 6 and Carbon Nanotubes

2021 ◽  
Vol 899 ◽  
pp. 185-191
Author(s):  
Anton M. Kuzmin ◽  
Vladimir N. Vodyakov ◽  
Elena A. Radaykina ◽  
Vyacheslav V. Kuznetsov ◽  
Mariya I. Murneva
Keyword(s):  
Carbon Nanotubes ◽  
Testing Machine ◽  
Polyamide 6 ◽  
Injection Rate ◽  
Screw Extruder ◽  
Tensile Testing Machine ◽  
Maximum Value ◽  
Initial Modulus ◽  
Strength Tests ◽  
Twin Screw

This paper is devoted to obtaining and investigating polymer composites based on polyamide-6 and carbon nanotubes. Polyamide 6, type 210/310, was used as a polymer matrix, and carbon nanotubes manufactured by OcSiAl were used as a modifier. The components were compounded in a co-rotating twin-screw extruder HAAKE Rheomex OS PTW 16 to obtain granulate. The granulate was processed by injection molding on a Babyplast 6/10V machine to obtain test samples as double-sided blades (ISO-527-2, type 5A). Elastic strength tests were carried out on a Gotech UAI-7000M universal tensile-testing machine. It has been shown that introduction of 0.15% CNT promotes an increase in the yield point and the initial modulus of elasticity with a significant decrease in the ultimate strength. The maximum value of the tensile strength (161 MPa) has been obtained for the specified composition at an injection rate of 12.9 ml/s.

Studies on Nanostructured Polyurethane/Clay Interpenetrating Polymer Networks

2005 ◽  
Vol 475-479 ◽  
pp. 1001-1004
Author(s):  
Ninglin Zhou ◽  
Xiao Xian Xia ◽  
Li Li ◽  
Shao Hua Wei ◽  
Jian Shen
Keyword(s):  
Mechanical Properties ◽  
Polymer Networks ◽  
Testing Machine ◽  
Physical And Mechanical Properties ◽  
Interpenetrating Polymer Networks ◽  
Absorption Properties ◽  
Tensile Testing Machine ◽  
Swelling Agent ◽  
Silicate Layers ◽  
Polyurethane Matrix

A novel exfoliated polyurethane (PU)/clay Interpenetrating Polymer Networks (IPNs) nanocomposite has been synthesized with polyurethane and organoclay. MTPAC is used as swelling agent to treat Na-montmorillonite for forming organoclay. The results indicate that there is very good compatibility between organoclay and PU. Nanoscale silicate dispersion was analyzed by XRD. The mechanical properties of the nanocomposites have been measured by tensile testing machine. The nanocomposites show obviously improved physical and mechanical properties when compared with the pure polymer. Additionally, PU /MTPAC- clay shows lower water absorption properties than pure PU do. In addition, the reinforcing and intercalating mechanism of silicate layers in polyurethane matrix are discussed.

scholarly journals Assessment of the Homogeneity of Polymeric Materials Using Hounsfield Units

2021 ◽  
Vol 2096 (1) ◽  
pp. 012169
Author(s):  
V M Kovalskii ◽  
A A Grin ◽  
V V Krylov ◽  
A A Vorotnikov
Keyword(s):  
Physical And Mechanical Properties ◽  
Image Data ◽  
Polymeric Materials ◽  
Polymer Materials ◽  
Hounsfield Units ◽  
Mechatronic Systems ◽  
Polymers And Plastics ◽  
X Ray ◽  
Material Inhomogeneity ◽  
Degree Of Heterogeneity

Abstract The X-ray transparency of various polymers and plastics is one of the most important factors in the choice of material in the design of new medical robotic and mechatronic systems and complexes. Along with the radiolucency, such a parameter as material inhomogeneity is also one of the main ones. The inhomogeneity of the material can not only affect the radiolucency of individual areas of the product but also impose restrictions on the use of polymeric materials by changing the physical and mechanical properties of the products. In this work, a technique was proposed for determining the location of regions of interest with reliable values on a CT image. Data were obtained for the values of the parameter HU and standard deviation for various polymer materials. A technique was proposed for determining the degree of heterogeneity of polymeric materials. The values of the degree of heterogeneity were obtained for all investigated materials.

Comparative Assessment of Ozone and Weather Aging of Rubber by Laboratory and Field Testing Conditions

2021 ◽  
Vol 80 (3) ◽  
pp. 132-138
Author(s):  
I.A. Novakov ◽  
◽  
E.S. Bochkarev ◽  
Minh Thuy Dang ◽  
O.O. Tuzhikov ◽  
...  
Keyword(s):  
Numerical Estimate ◽  
Testing Machine ◽  
Physical And Mechanical Properties ◽  
Field Testing ◽  
Tropical Climate ◽  
Styrene Butadiene Rubber ◽  
Dynamic Shear Modulus ◽  
Butadiene Rubber ◽  
Tensile Testing Machine ◽  
The Republic

The authors compared the results of determining the ozone resistance (OR) and weather resistance (WR) obtained in laboratory and natural conditions of tropical climate. The samples were manufactured with unsaturated rubbers (nitrile butadiene rubbers BNKS-18AN, BNKS-28AN, BNKS-40AN and SKN-26PVC-30, styrene butadiene rubber SKMS-30 ARKM, isoprene SKI-3 and butadiene SKD-ND). All the samples were not filled with antioxidants or antiozonants. The curing process at 160 °C and the total crosslink density (νt) were studied using a MonTech MDR 3000 Professional rotorless rheometer. The physical and mechanical properties of the vulcanizates were determined with the using of a Zwick\Roell Z010 tensile testing machine at a test speed of 500 mm / min. Hardness and tear resistance were also determined. The numerical estimate of νt was obtained from the data on the dynamic shear modulus. Density of chemical bonds νch was determined from the data of equilibrium swelling in toluene according to the Flory-Rener equation. Full-scale climatic tests in tropical climate in the south of the Republic of Vietnam were carried out for 9 months in accordance with GOST 9.066-76 with initial deformations of 10, 20, 30, 40 %. The sample stand was oriented south, at a 45 degree angle. Cracks formed on the rubber surface were recorded by photography. The time before the onset of fracture Tof and the time until the appearance of the first cracks Tfc were determined. It is shown that samples of rubbers with high OR in laboratory tests had the best WR. A correlation of νch with Tof and Tfc was revealed. The obtained results show the possibility of using the express method for assessing the OR of rubbers in the development of formulations for tropical climates.

scholarly journals Influence of fineness level and applied agglomeration pressure of peppermint herb (Mentha piperita L.) on the mechanical properties of the obtained product

2018 ◽  
Vol 10 ◽  
pp. 02028
Author(s):  
Urszula Sadowskaʼ ◽  
Andrzej Żabiński ◽  
Krzysztof Mudryk
Keyword(s):  
Mechanical Properties ◽  
Testing Machine ◽  
Hydraulic Press ◽  
Brazilian Test ◽  
Mentha Piperita ◽  
Agglomeration Process ◽  
Strength Tests ◽  
The Matrix ◽  
The Impact ◽  
Chamber Diameter

The objective of the conducted study was to evaluate the impact of the pressure agglomeration process of peppermint herb on the mechanical properties of the obtained product. The separated fractions of peppermint with 0.5-2.5 and 2.5-5 mm particles were compacted using a hydraulic press Fritz Heckert EU 20, with pressure 50, 100, 150 and 200 MPa. A closed matrix with the compression chamber diameter of 15.6 mm was used. Every time, a 2-g herb sample (corresponding to the weight of tea used for the production of tea bags) was poured into the matrix. Thus, compacted herb in the form of a straight cylinder was obtained. When producing the agglomerate compaction work was determined. Strength tests of the obtained agglomerate were conducted using the MTS Insight 2 testing machine. The density of the produced agglomerate, its compaction level and strength in the Brazilian test was calculated. The obtained results indicate that the values of the tested parameters increase with the increase of pressure in the tested range, yet differences occur between the tested herb fractions. Typically, the agglomerate produced from 0.5-2.5 mm fraction is characterized by a greater density, and the higher level of agglomerate compaction is obtained using 2.5-5 mm herb fraction. The highest strength determined using Brazilian test was determined for agglomerate produced from 0.5-5 mm peppermint herb fraction at 200 MPa pressure and 0.5-2.5 mm fraction using 150 and 200 MPa pressure.

scholarly journals Design and Implementation of a Tensile Testing Machine

2020 ◽  
Vol 13 (1) ◽  
pp. 50-53
Author(s):  
Hunor Fábián ◽  
Attila Gergely
Keyword(s):  
Tensile Strength ◽  
Manufacturing Process ◽  
Tensile Testing ◽  
Testing Machine ◽  
Polymeric Materials ◽  
Tensile Testing Machine ◽  
Design And Implementation ◽  
Mechanical Part ◽  
Design And Manufacturing ◽  
Stepper Motors

AbstractThe aim of this paper is to present the design and manufacturing process of a tensile testing machine capable of measuring the tensile strength of polymeric materials. The structure of the instrument is similar to that used in the industry; however, it is budget friendly. The instrument consists of a frame, and two screws which are driven by two stepper motors. An Arduino is used to control the mechanical part of the instrument and to connect it to the software.

scholarly journals Investigations of Flame Retardant Properties of Zinc Borate Accompanying with Huntite and Hydromagnesite in Polymer Composites

2020 ◽  
Vol 1 (1) ◽  
Author(s):  
Hüsnügül YILMAZ ATAY ◽  
Öykü İÇİN ◽  
Buket KURU
Keyword(s):  
Flame Retardant ◽  
Synergistic Effects ◽  
Polymeric Materials ◽  
Polymer Materials ◽  
Morphological Properties ◽  
Zinc Borate ◽  
Human Beings ◽  
Polypropylene Composites ◽  
Twin Screw ◽  
Flame Retardant Properties

Fires have been a danger to human beings for the centuries. As people lost their lives and property in fires, they tried to fight the fire and their efforts in this area continued increasingly. Unfortunately, it is still not possible to completely reset the risk of starting the fire. But it seems likely to extinguish immediately after the fire has started, and this is very important to save people’s lives. Scientists have been working in this field in recent years; they are concentrated on producing fire-resistant materials using different materials. This can be provided by different ways; either fire-resistant material can be produced new, or the fire resistivity can be provided by incorporating the additive material into a flammable material. In our previous studies, we used huntite and hydromagnesite minerals to give fire resistance property to polymer materials, very successful results were obtained. In this study, huntite and hydromagnesite minerals were used for accompanying with zinc borate in polypropylene composites in order to increase the flame retardant property of a polymeric materials. Different content of minerals were blended with polypropylene, and composites were produced by twin-screw extruder for observing synergistic effect. Scanning electron microscopy (SEM) analyses were conducted to determine the structural and morphological properties of the composites. Thermal properties were determined according to thermogravimetric analysis (TGA). Tensile and three point bending tests were carried out to obtain mechanical properties. Flame retardant performance was evaluated according to UL 94 vertically flammability test. It was concluded that very good synergistic effects were obtained that zinc borate was significantly influential with huntite/hydromagnesite in the flammability characteristics of composites because higher char formation is observed with zinc borate addtion. Moreover, the zinc borate reduced the smoke generated during combustion.

Influence of Styrene Maleic Anhydride Compatibilizer on the Properties of Polyurethane Carbon Nanocomposites

2015 ◽  
Vol 24 (6) ◽  
pp. 096369351502400
Author(s):  
Bharathi Mariappan ◽  
Sellamuthu N. Jaisankar
Keyword(s):  
Tensile Strength ◽  
Maleic Anhydride ◽  
Testing Machine ◽  
Energy Calculation ◽  
Screw Extruder ◽  
Scanning Calorimetry ◽  
Tensile Testing Machine ◽  
Degradation Temperature ◽  
Twin Screw ◽  
Styrene Maleic Anhydride

In this study styrene maleic anhydride polymer was used as compatibilizer in making nanocomposites of polyurethane with carbon nanotubes (single walled) using twin screw extruder. The dispersion of nanotubes in polymer matrix was confirmed using scanning electron microscopy and fourier transform infrared spectroscopy. The thermal properties were analysed using differential scanning calorimetry and thermogravimetric analyser. The tensile strength of the nanocomposites was estimated using Instron tensile testing machine. The result reveals that the addition of compatibilizer increases the tensile strength and the degradation temperature. In addition the energy calculation shows by using the compatibilizer the energy consumption of the extruder can be reduced.

scholarly journals PREPARATION OF BLENDING COMPOSITIONS BASED ON SECONDARY POLYPROPYLENE WITH CONTROLLED PHYSICO-MECHANICAL PROPERTIES

2019 ◽  
Vol 16 (32) ◽  
pp. 139-146
Author(s):  
Vadim P ZAKHAROV ◽  
Aigiz G KHUSNULLIN ◽  
Elena M ZAKHAROVA ◽  
Anzhela S SHURSHINA ◽  
Elena I KULISH
Keyword(s):  
Mechanical Properties ◽  
Testing Machine ◽  
Strength Properties ◽  
Hydraulic Press ◽  
Polymer Composition ◽  
Tensile Testing Machine ◽  
Phase Reversal ◽  
Wide Range ◽  
The Usa ◽  
Horizontal Type

It was investigated the effect of the method of obtaining polymer composites based on the blend of polymers over a wide range of their ratios on the rheological and physical-mechanical properties. The composites were prepared (using pressing or pressure die casting) on the basis of secondary polypropylene (PP) and the following polymers: 1) ultra high molecular polyethylene (UHMPE); 2) ethylene propylene diene monomer (EPDM); 3) secondary low pressure polyethylene (LPPE). Pressing was carried out on an automatic hydraulic press "AutoMH-NE" (Carver, the USA) at 210°C and endurance under pressure of 7000 kgfs within 3 min. Injection molding was performed using a Babyplast automatic molding machine of the horizontal type with an injection volume of up to 15 cm3. In both cases, the compositions also went through a stage of the preliminary mixture at the laboratory station (plastograf) of "PlastographEC" (Brabender, Germany) within 15 min at a load of 200 N. Estimation of rheological properties of the polymer composition melts was performed using a Haake Mars III rheometer. The deformation-strength properties were studied according to the State Standard GOST 11262-80 with a tensile testing machine "Shimadzu AGS-X". Using the data of relative rheometry, it is determined for all the systems studied (blends PP with UHMPE, EPDM, and LPPE) that variation of the maximum torque with composite composition is non-additive. This seems to be due to the occurring phase reversal. The present fact finds its support when performing rheological investigations using absolute rheometry. It is shown that variations in the phase structure of composites occurring in the phase reversal area lead to the corresponding changes in the deformation-strength properties of composites.

scholarly journals Experimental Investigations on the Induced Anisotropy of Mechanical Properties in Polycarbonate Films

2013 ◽  
Vol 2013 ◽  
pp. 1-8 ◽  
Author(s):  
Andrea Wibbeke ◽  
Volker Schöeppner ◽  
Rolf Mahnken
Keyword(s):  
Mechanical Properties ◽  
Testing Machine ◽  
Polymer Materials ◽  
Major Influence ◽  
Experimental Investigations ◽  
Induced Anisotropy ◽  
Tensile Testing Machine ◽  
Cold Forming ◽  
Two Phases ◽  
Anisotropy Of Mechanical Properties

The prime aim of this paper is to investigate, with the help of experiments, the induced anisotropy of mechanical properties in polycarbonate films. It is known that a molecular orientation in polymer materials occurs through cold-forming. In this study, cold forming is performed at room temperature on a tensile testing machine. The polycarbonate films are examined in two phases. In the first phase, the specimen is loaded, while the prestrain is varied, and in the second, it is loaded, while the material direction is varied. The main findings are that the prestrain has virtually no influence on the anisotropy and that the material direction does exert a major influence. Furthermore, this paper summarizes comparisons of anisotropic characteristic data, maximum stresses, elasticity moduli and failure strain.

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