Polymer Nanocomposites Exploited Under The Arctic Conditions

Охлопкова, А. А.; Никифоров, Л. А.; Охлопкова, Т. А.; Borisova, R. V.

doi:10.18502/kms.v1i1.573

Cited by 6 publications

(5 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The composite containing 30 wt% biochar filler achieved the lowest elongation at break, of 10%. However, it should be noted that the standard deviation as presented in Table S2 in the Supplementary Material was very low (0.15%), which may be related to the good distribution of the filler in the matrix [34]. The 30 wt% PBAT/PLA/biochar composite showed half the elongation value of the pure matrix, which reached an average value of 19%.…”

Section: Mechanical Testsmentioning

confidence: 92%

Mechanical and Rheological Evaluation of Polyester-Based Composites Containing Biochar

Jurczyk,

Andrzejewski,

Piasecki

et al. 2024

Polymers

View full text Add to dashboard Cite

The use of biodegradable polymers as matrices in composites gives a wide range of applications, especially in niche areas. The assessment of the effect of the filler content on the change of mechanical properties makes it possible to optimize the composition for specific needs. Biochar was used as a filler in the studied composites with two different biodegradable blends as a matrix. Poly(1,4-butylene adipate-co-1,4-butylene terephthalate)/polylactide/biochar (PBAT/PLA/BC) and polylactide/poly[(R)-3-hydroxybutyrate-co-4-hydroxybutyrate]/biochar (PLA/P(3HB-co-4HB)/BC) composites with 0, 10, 15, 20 and 30 wt% of biochar underwent mechanical tests. The test results revealed a change in the properties of the composites related to the filler content. The results of the tensile test showed that increasing the biochar content increased the tensile modulus values by up to 100% for composites with 30 wt% of biochar, compared to unfilled matrices, and decreased the elongation associated with the breaking of PBAT/PLA and PLA/P(3HB-co-4HB) matrix composites. The elongation values at break of PBAT/PLA and PLA/(3HB-co-4HB) composites with 30 wt% biochar were reduced by 50% and 65%, respectively, compared to the unfilled matrices. PLA/P(3HB-co-4HB) matrix composites, in contrast to PBAT/PLA/BC, showed a decrease in tensile strength with the increases in filler content from 35.6 MPa for unfilled matrix to 27.1 MPa for PLA/P(3HB-co-4HB)/BC30 composites. An increase in filler content increased the brittleness of the composites regardless of the matrix used, as determined under the Charpy impact-test. This phenomenon was observed for all tested PLA/P(3HB-co-4HB) composites, for which the impact strength decreased from 4.47 kJ/m2 for the matrix to 1.61 kJ/m2 for the composite containing 30 wt% biochar. PBAT/PLA-based composites with 10 wt% of biochar showed slightly lower impact strength compared to the unfilled matrix, but composites with 30 wt% biochar showed 30% lower impact strength than PBAT/PLA. The complex viscosity value increased with increased filler content. For all composites tested on both polyester matrices, the viscosity decreased with increasing angular frequency.

show abstract

Section: Mechanical Testsmentioning

confidence: 92%

Mechanical and Rheological Evaluation of Polyester-Based Composites Containing Biochar

Jurczyk,

Andrzejewski,

Piasecki

et al. 2024

Polymers

View full text Add to dashboard Cite

show abstract

“…Several studies [12,13] has established that increase in the wear resistance of polymer composite materials (PCM) is observed during investigation of PTFE with carbon fillers. The authors explain itby the ability of the filler particles to block and "heal" the cracks formed in the near-surface layer.…”

Section: Intorductionmentioning

confidence: 99%

Development of Wear-Resistant Materials Based on Polytetrafluoroethylene and Carbon Fibers of UVIS-AK-P Brand

Markova

Петрова

2019

MSF

View full text Add to dashboard Cite

The present paper considers the influence of various technological approaches, based on the application of joint mechanochemical processing of composite components and ultrasonic action, on the performance of composites based on PTFE and discrete carbon fibers of UVIS-AK-P brand. It is established that the use of a certain method of energy deposition on the composite components for the complex enhancement of physical-mechanical and tribological properties depends on the concentration of carbon fibers (CF) in polymer matrix. As a result of the joint mechanoactivation treatment of the components in the planetary mill for 2 minutes, an improvement in physical-mechanical and tribotechnical properties of PTFE with CF concentration of 5 wt.% is observed. An improvement at concentration of 3 wt.% of CF is detected during ultrasonic treatment of PCM components.

show abstract

“…Enhancing the UHMWPE properties can be achieved by different methods through irradiation, surface modification, introducing effective textures, varying cross-linking, crystallinity percentage, reinforcements with particles or fibers [6]. Among the available publications, there are innovative developments related to the possibility of using composite materials based on UHMWPE to protect equipment from climate and environmental factors (exposure to aggressive media) [7][8][9][10][11], as well as their use as materials for microwave Powders 2023, 2 579 applications [12] or substrates for dielectric resonators [13]. It is believed that for these purposes the polymer of choice should have a high permittivity, low dielectric losses, as well as high mechanical characteristics.…”

Section: Introductionmentioning

confidence: 99%

Dielectric Performance of UHMWPE-MgFe2O4 Composites Depending on Polymer Crystallinity, and the Concentration and Size of Mechanochemically Synthesized Ferrite Particles

Kiseleva,

Grigoreva,

Kovaliova

et al. 2023

Powders

View full text Add to dashboard Cite

Mechanochemically synthesized particles of two types of magnesium ferrites, one of which with structural distortions and an average size of 170 nm, and another that is highly crystalline with an average size of 900 nm, were introduced into a matrix of ultra-high-molecular-weight polyethylene via the milling processing. The final material has been formed by hot pressing mechanocomposites based on ultra-high-molecular-weight polyethylene and magnesium ferrite particles of various fineness and concentration. Structural characteristics were studied using scanning electron microscopy, differential scanning calorimetry and X-ray diffraction analysis. The dielectric properties of the obtained composites were analyzed by testing the frequency dependence of the permeability, dielectric losses, and conductivity. The effect of filler concentration and particle size, as well as the crystallinity of the polymer, on the dielectric properties of the composite material were studied.

show abstract

Polymer Nanocomposites Exploited Under The Arctic Conditions

Cited by 6 publications

References 7 publications

Mechanical and Rheological Evaluation of Polyester-Based Composites Containing Biochar

Mechanical and Rheological Evaluation of Polyester-Based Composites Containing Biochar

Development of Wear-Resistant Materials Based on Polytetrafluoroethylene and Carbon Fibers of UVIS-AK-P Brand

Dielectric Performance of UHMWPE-MgFe2O4 Composites Depending on Polymer Crystallinity, and the Concentration and Size of Mechanochemically Synthesized Ferrite Particles

Contact Info

Product

Resources

About