The Effect of Mineral Fillers on the Main Physicomechanical Properties of Random Polypropylene Copolymers

Kakhramanov, N. T.; Osipchik, V.S.; Arzumanova, N. B.; Kuliev, A. D.; Лалаева, Р. Н.; Khamedova, L.Kh.; Ishchenko, N. Ya.

doi:10.1177/0307174x1804500206

Cited by 2 publications

(2 citation statements)

References 4 publications

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“…In the process of uniaxial deformation within 3-5%, the primary load is directed to the expansion of spherulites which, in terms of strength, is characterized by the tensile yield stress. Further stretching of the samples is already associated with the formation of a "neck" the strength of which is considered as ultimate tensile stress [9][10][11]. We believe that the loading of up to 5.0% LDPE will testify to the fact that the branched part of the macrochain will be redistributed mainly in the interspherolite region of HDPE, providing a partial removal of rigidity in it and thereby increasing the probability of simultaneous participation of the most of the passage chains in the process of uniaxial deformation.…”

Section: Resultsmentioning

confidence: 99%

Physicomechanical Properties of High and Low Density Polyethylene Mixtures and Modified Compositions on Their Basis

Mustafayeva¹,

Kakhramanov²,

Ismayilov³

et al. 2020

Chemical Problems

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The paper considers the influence of the ratio of polymer components-high density polyethylene and low density polyethylene, on the main physicomechanical properties. The properties of polymer mixtures such as tensile yield stress, ultimate tensile stress and elongation at break were studied. It revealed that as the content of low density polyethylene in the polymer mixture increases, two small maxima appear on curves. These maxima correspond to 5.0 and 50 wt. % of the content of low density polyethylene in the mixture. The loading of 1.0 wt. % of a structurant-titanium dioxide into the composition of polymer mixtures leads to noticeable increase in their strength indicators and elongation at break at almost all ratios of polymer components. The effect of the crosslinking agent, sulfur, on the basic physicomechanical and thermophysical properties of composite materials was examined. It found that as the sulfur content rose from 1.0 to 5.0 wt. % in the polymer mixture, a regular increase in the tensile yield strength, elongation at break, and heat resistance of the samples is observed. Along with this, a slight decrease in the melt flow rate of polymer compositions with an increase in the concentration of the curing agent was noted. The theoretical substantiation of processes occurring in polymer mixtures in the process of exposure to titanium dioxide and sulfur was presented.

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Section: Resultsmentioning

confidence: 99%

Physicomechanical Properties of High and Low Density Polyethylene Mixtures and Modified Compositions on Their Basis

Mustafayeva¹,

Kakhramanov²,

Ismayilov³

et al. 2020

Chemical Problems

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“…In the works [46][47][48][49][50], the results of investigation of influence of the standard mineral fillers on basic physical-mechanical and physical-chemical properties of nanocomposites on the basis of comparatively new types of thermoplastic polyolefins -statistic copolymer of ethylene with propylene (REP) and block copolymer of propylene with ethylene (BEP) were presented. It revealed that an introduction of multifunctional structure-forming agentsalizarin and zinc stearate within the ranges of 1.0% mass in the composition of above-mentioned polyolefins improves essentially the strength and rheological characteristics of the composite materials on their basis.…”

Section: Physico-mechanical Properties Of Composite Materials Based Omentioning

confidence: 99%

On Preparation of Polymer Composites With Improved Electrophysical and Physical-Mechanical Properties

Kakhramanov¹,

Allahverdiyeva²,

Nurullayeva³

2019

Chemical Problems

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The work deals with the results of analytical review of the development and research of polymer composite materials with improved electro-physical and physical-mechanical properties. It found that the selection of special fillers, their variation by quantity and particle sizes in the polymer matrix can essentially affect the electro-conductivity of material and thereby regulate their electret properties on the whole. It revealed that the use of traditional fillers of carbon-black, graphite, minerals, metals, etc. in the composition of thermoplastics, reactoplastics and rubber makes it possible to prepare antistatic products, electromagnetic protective coatings, resistors, various types of current-conducting materials. The use of various lightweight fillers allows preparing lowdensity composites with higher physical-mechanical and electret properties. The spheroplastics based on siloxane elastomer began gaining a larger popularity. There is the data on carbon-blackfilled composite materials based on polyolefins which, at definite ratios, allow preparing the electroconductive products. A certain place in the review is given to the use of highly dispersed metal powders for the improvement of the electret characteristics of composites. Much attention is paid to the investigation of nanofilled composites with the use of large set of the dispersed minerals. The use of hybride polymer nanocomposites opens up new perspectives for their wider use in the production of current-conductive materials. The possibility of chemical binding of mineral filler particles with polymer matrix using the binders with conjugated double bonds provides innovative approaches to the creation of high-strength and heat-resistant electroconductive composites. It becomes obvious that the most perspective direction of preparation of materials with high electret properties must be based on mechanical-chemical synthesis of composite materials.

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The Effect of Mineral Fillers on the Main Physicomechanical Properties of Random Polypropylene Copolymers

Abstract: The effect of quartz four, whiting, and cement on the physicomechanical properties of filled polymer composites based on a statistical polypropylene copolymer – random polypropylene copolymer – was investigated.

Cited by 2 publications

References 4 publications

Physicomechanical Properties of High and Low Density Polyethylene Mixtures and Modified Compositions on Their Basis

Physicomechanical Properties of High and Low Density Polyethylene Mixtures and Modified Compositions on Their Basis

On Preparation of Polymer Composites With Improved Electrophysical and Physical-Mechanical Properties

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