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.

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.

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.

INNOVATIVE MANUFACTURING OF CARBON NANOTUBE-LOADED FIBRILLAR POLYMER COMPOSITES

2010 ◽  
Vol 24 (15n16) ◽  
pp. 2459-2465 ◽  
Author(s):  
R. J. T. LIN ◽  
D. BHATTACHARYYA ◽  
S. FAKIROV
Keyword(s):  
Mechanical Properties ◽  
Carbon Nanotubes ◽  
Polymer Composites ◽  
Polyamide 66 ◽  
Screw Extruder ◽  
Enhancing Effect ◽  
The Matrix ◽  
Twin Screw ◽  
New Type ◽  
Scanning Electron

The concept of microfibrillar composite (MFC) has been used to create a new type of polymer composites, in which the reinforcing microfibrils are loaded with carbon nanotubes (CNT). Polyamide 66 (PA66) has been melt blended with polypropylene in a twin screw extruder with and without CNT, and thereafter cold drawn to create a fibrillar state as well as to align the CNT in the PA66 microfibrils. The drawn bristles were compression moulded at 180°C to prepare MFC plates. The scanning electron microscope (SEM) observations indicate near perfect distribution of CNT in the reinforcing PA66 microfibrils. Although the fibrillated PA66 is able to improve the tensile stiffness and strength as expected from the MFC structure, the incorporation of CNT does not exhibit any further enhancing effect. It rather adversely affects the mechanical properties due to poor interface adhesion between the matrix and the reinforcing microfibrils with the presence of CNT, as demonstrated by SEM. However, the resulting highly aligned CNT within the MFC are expected to affect the physical and functional properties of these composites.

Preparation and Chracterization of Nanocomposites of Polyamide 6/Brazilian Clay with Different Organic Modifiers

2008 ◽  
Vol 570 ◽  
pp. 18-23 ◽  
Author(s):  
Michelle A. Souza ◽  
Nelson M. Larocca ◽  
Edcleide Maria Araújo ◽  
Luiz Antonio Pessan
Keyword(s):  
Bentonite Clay ◽  
Polyamide 6 ◽  
X Rays ◽  
Organic Modifiers ◽  
Screw Extruder ◽  
Organic Salts ◽  
Transmission Electron ◽  
Twin Screw ◽  
Izod Impact ◽  
Injection Molded

Nanocomposites of PA6 / organoclay at different concentration were prepared via melt intercalation method using a corotating twin screw extruder. The composites were prepared with Brazilian clay that was treated with different modifiers based on quaternary ammonium salts to obtain three types of organoclays. After extrusion the mixtures were injection molded into specimens that were tested to obtain the properties of tensile strength, notched izod impact and heat deflection temperature. The structure and morphology of the nanocomposites were characterized by x-rays diffraction (XRD) and transmission electron microscopy (TEM). The results showed that the modifier “dodigen” which promoted the intermediate expansion of the bentonite clay within the three salts used for the modification of the clay affects more significantly the mechanical properties, HDT and morphology of the polyamide 6 due to the higher level of exfoliation observed in these systems compared to the others modifiers. The improvement of the properties was correlated to the level of exfoliation/intercalation obtained which depends on the process technique used, surface treatment of the Brazilian clays with organic salts and interaction between polymer and clay.

scholarly journals Multiwalled Carbon Nanotubes Reinforced Polypropylene Composite Material

2017 ◽  
Vol 2017 ◽  
pp. 1-5 ◽  
Author(s):  
Juan Li
Keyword(s):  
Carbon Nanotubes ◽  
Multiwalled Carbon Nanotubes ◽  
Bending Strength ◽  
Screw Extruder ◽  
Polypropylene Composite ◽  
Multiwalled Carbon ◽  
Elongation At Break ◽  
Twin Screw ◽  
Pp Composites ◽  
Scanning Electron

Polypropylene (PP) composites reinforced with multiwalled carbon nanotubes (MWNTs) were prepared by using twin screw extruder. The experimental results showed that with the increasing amount of MWNTs the elongation at break decreased whereas the tensile strength, bending strength, and impact strength increased. By using scanning electron microscope (SEM), we find that the hydroxyl-modified carbon nanotube has better dispersion performance in PP and better mechanical properties.

Study on the Structure and Properties of Polyvinyl Pyrrolidone/ Polyamide 6 Blends

2012 ◽  
Vol 554-556 ◽  
pp. 13-17
Author(s):  
Shi Jie Zhang ◽  
Yi Wen Tang ◽  
Xin Li Yang ◽  
Li Hua Cheng
Keyword(s):  
Hydrogen Bond ◽  
Crystalline State ◽  
Intermolecular Hydrogen Bond ◽  
Polyamide 6 ◽  
Polyvinyl Pyrrolidone ◽  
Structure And Properties ◽  
Screw Extruder ◽  
Α Phase ◽  
Twin Screw ◽  
New Type

3-10％(wt) Polyvinyl pyrrolidone (PVP) was mixed with PA6 through the twin-screw extruder, a new type of high hygroscopic nylon resins can be obtained. With the increasing addition of PVP the crystalline state of PA6 changes from γ to α phase. The intermolecular hydrogen bond exists between PVP and PA6. The FTIR and WAXD analysis can approve the existence of the intermolecular hydrogen bond and the change of the PA6 crystalline state.

The impact properties of a polyamide 6– polytetrafluoroethylene composite

2009 ◽  
Vol 224 (1) ◽  
pp. 13-17 ◽  
Author(s):  
J Li ◽  
Y F Zhang
Keyword(s):  
Electron Microscope ◽  
Interfacial Adhesion ◽  
Polyamide 6 ◽  
Continuous Phase ◽  
Dispersed Phase ◽  
Screw Extruder ◽  
Impact Properties ◽  
Twin Screw ◽  
The Impact ◽  
Scanning Electron

Polyamide 6 (PA6)-filled polytetrafluoroethylene (PTFE) at different compositions has been successfully prepared in a corotating twin screw extruder where PTFE acts as the polymer matrix and PA6 as the dispersed phase. The morphology and impact properties of these blends were investigated using a scanning electron microscope. The presence of PA6 particles dispersed in the PTFE continuous phase exhibited a coarse morphology. Increasing PA6 contents in the blend improved the impact properties at weak deformation. It was found that the interfacial adhesion played an important role in the creation of an interphase that was formed by the interaction between the PTFE and PA6. This induced an improvement in impact properties. In addition, the optimum impact properties were obtained when the content of PA6 is 30 vol%.

Synthesis and Characterization of Exfoliated Natural Mica/Polymer Nanocomposites

2007 ◽  
Vol 539-543 ◽  
pp. 948-955 ◽  
Author(s):  
Kenji Tamura ◽  
Hikaru Uno ◽  
Hirohisa Yamada
Keyword(s):  
Polymer Nanocomposites ◽  
Polyamide 6 ◽  
Amine Hydrochloride ◽  
Average Particle ◽  
Screw Extruder ◽  
Twin Screw ◽  
Particle Length ◽  
High Degree ◽  
Particle Aspect Ratio

The effect of natural mica on the morphology and properties of polyamide 6 (PA-6) nanocomposites was examined. Natural mica (sericite) acquired from a well-known mine in Shimane, Japan was ion-exchanged with an alkyl amine hydrochloride compound. The resulting organomica was extruded with PA-6 using a twin-screw extruder. Quantitative analysis of TEM photomicrographs of the nanocomposite reveal a fairly large average particle length and a higher degree of platelet exfoliation for the natural mica-based nanocomposite compared to the clay version, thus translating into a higher particle aspect ratio. The resulting nanomica/PA-6 composite exhibits a high degree of mica exfoliation and improved thermal mechanical properties.

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