Hybrid Nanocomposites Based on High-Density Functionalized Polyethylene and Sized Bentonite

Курбанова, Р. В.; Kakhramanov, N. T.

doi:10.1134/s1995421220010128

Cited by 2 publications

(3 citation statements)

References 4 publications

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“…Before addition of microtalc nanoparticles to the LDPE, the filler was dressed at 90°C in HCl-acidified (pH 3.5) distilled water in the presence of AGM-9 organosilicon compound (γ-aminopropyltriethoxysilane H 2 NC 3 H 6 -Si(OC 2 H 5 ) 3 ) for 8 h. As a result of the alkoxide method of sol-gel synthesis, a thin layer of crosslinked structure of organosilicon compound is formed between hydroxyl groups of AGM-9 and talc molecules on the surface of nanoparticles [8][9][10].…”

Section: Methodsmentioning

confidence: 99%

“…Grafting of maleic anhydride was performed by the most susceptible terminal, α-methylene and trans-vinylene double bonds, as well as by the cleavage site of macrochains by C-C bond during reaction extrusion. As a result of mechanochemical synthesis, a PEMA-O-Si-O-Si-O covalent bond was formed between PEMA macrochains and dressed talc with the formation of crosslinked structure [9][10][11][12].…”

Section: Methodsmentioning

confidence: 99%

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Influence of Molding Condition on the Properties of Dressed and Functionalized Nanocomposites Based on Low Density Polyethylene

Курбанова

Kakhramanov

Osipchik

et al. 2021

Inorg. Mater. Appl. Res.

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The results of a study of the effect of injection molding on the physicomechanical and technological properties of nanocomposites based on low density polyethylene functionalized with maleic anhydride and talc dressed with gg-aminopropyltriethoxysilane are presented. As the object of study, nanocomposites with 5.0 and 30 wt % of dressed talc were used. Properties such as breaking stress, elongation at break, flexural strength, and volumetric shrinkage were investigated. It was found that the introduction of dressed talc in the composition of chemically modified low density polyethylene contributed to some increase in the breaking stress and the flexural modulus of the nanocomposite. Experimental studies were carried out in a wide range of temperatures of the material cylinder and casting pressure. It was found that relatively high physical and mechanical properties were achieved in samples obtained at higher temperatures in the zones of the material cylinder. The casting pressure ranged from 50 to 150 MPa. It was found that relatively high physicomechanical and technological properties for nanocomposites with 5.0 and 30 wt % talc content were achieved at a temperature of the material cylinder in the zones of 110-130-160-180°C and a casting pressure of 150 MPa. A significant reduction in volumetric shrinkage is achieved in samples with 30 wt % talc content. The influence of mold temperature and holding time under pressure on the change in the properties of nanocomposites is considered. It is shown that the optimal mode in the cooling mold for samples with 5.0 wt % talc content is 50°C and the exposure time under pressure of 20 s, and for a nanocomposite with 30 wt % talc content, 50°C and holding time 10 s. The influence of the location of the gate device relative to the surface of the sample on the change in the properties of composite materials is studied. The scientific substantiation of the discovered patterns in changing the properties of nanocomposites is given.

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Influence of Molding Condition on the Properties of Dressed and Functionalized Nanocomposites Based on Low Density Polyethylene

Курбанова

Kakhramanov

Osipchik

et al. 2021

Inorg. Mater. Appl. Res.

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“…В ряде работ [10,11,14] нами было показано, что наиболее высокие значения прочностных свойств нанокомпозитов можно достигнуть при концентрации природных наполнителей в полиолефинах в количестве 5,0% масс. При этом с целью улучшения технологической совместимости компонентов смеси использовали компатибилизатор с содержанием 5,6% масс.…”

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Reaction extrusion of organic-inorganic hybrid gels based on modified polyolefins and dressed mineral fillers

et al. 2021

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The article discusses the technological features of the reaction extrusion of nanocomposites based on dressed natural minerals and high density polyethylene modified with compatibilizer and polypropylene. Clinoptilolite, vesuviane, bentonite and talc were used as natural minerals. The optimal technological mode of reaction extrusion was selected. Dicumyl peroxide in the amount of 0.25 and 0.5 wt.% was used as a vulcanization agent. The influence of technological features of reaction extrusion on the basic physicomechanical properties of nanocomposites based on polyolefins is considered.

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Hybrid Nanocomposites Based on High-Density Functionalized Polyethylene and Sized Bentonite

Cited by 2 publications

References 4 publications

Influence of Molding Condition on the Properties of Dressed and Functionalized Nanocomposites Based on Low Density Polyethylene

Influence of Molding Condition on the Properties of Dressed and Functionalized Nanocomposites Based on Low Density Polyethylene

Reaction extrusion of organic-inorganic hybrid gels based on modified polyolefins and dressed mineral fillers

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