Optimization of parameters of polylactide processing on a 3D printer

,; Kabat, O.S.; Naumenko, O.О.; ,; Heti, К.V.; ,

doi:10.32434/0321-4095-2023-150-5-29-35

Cited by 2 publications

(1 citation statement)

References 13 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This helps explain why goods constructed of aromatic polyamides can function in machinery and mechanisms at up to 300 °C while retaining their level of characteristics and, in certain circumstances, performance at up to 350 °C. 18,19 Aromatic polyamides also outperform other tribologically relevant polymers in terms of mechanical strength, hardness, resistance to alternating and shock loads, and abrasion resistance. 20,21 Aromatic polyamides have a few drawbacks, including a relatively high cost and a limited ability to be processed into products utilizing high-performance techniques (extrusion, pressure moulding).…”

Section: Literary Reviewmentioning

confidence: 99%

Polymer composites based on aromatic polyamide and fillers of spherical and layered structure for friction units of high-performance equipment

Каbаt

Girin

Heti

2023

Proceedings of the Institution of Mechanical Engineers, Part L:

View full text Add to dashboard Cite

Without the employment of new equipment, with units functioning at high levels of weights, sliding speeds and temperatures, the current growth of the sector is all but impossible. High levels of labour intensity have a detrimental impact on the dependability and durability of the product. Moving joints, which comprise friction units, frequently fail at the same time. It is vital to increase their dependability and durability. This can be accomplished by substituting more recent materials with higher-quality qualities for the friction pair materials. To create such materials, the researchers created an aromatic polyamide polymer that was filled with silicon- (silica gel, bentonite) and carbon-containing (technical carbon, graphite) components. It was determined that depending on their nature, structure and content in the polymer matrix, the addition of these fillers enables the reduction of the coefficient of friction and wear of the produced polymer composites by 1.5–2.5 and 20–40 times, respectively, during frictional interaction with steel. It was found that 10–15% by weight of the examined fillers in aromatic polyamide is the ideal concentration. It has been proven that polymer composites filled with layered materials (bentonite, graphite) perform better in terms of tribological qualities when in contact with steel than those filled with spherical elements (technical carbon, silica gel). The improvement of the tribological properties of the developed polymer composites in comparison to the original polymer was determined based on the microphotographs of steel surfaces and the study of their morphological (roughness) and physical (microhardness) properties. It was determined that the change in the friction nature was due to the creation of an antifriction coating on the metal friction surface from the products of tribochemical reactions occurring during friction.

show abstract

Section: Literary Reviewmentioning

confidence: 99%

Polymer composites based on aromatic polyamide and fillers of spherical and layered structure for friction units of high-performance equipment

Каbаt

Girin

Heti

2023

Proceedings of the Institution of Mechanical Engineers, Part L:

View full text Add to dashboard Cite

show abstract

The influence of external and internal factors on ensuring adhesive interaction of a polymeric sealant with a substrate surface (a review)

Mitina,

Klymenko,

Kabat

et al. 2024

Vopr. Khim. Khim. Tekhnol.

View full text Add to dashboard Cite

This paper analyzes literature data on the influence of various factors affecting the strength and durability of adhesive bonds, as well as presents a characterization of the methods described in the literature for conducting relevant studies. It is shown that one of the main characteristics of adhesive joints is the interaction at the interface between the substrate and the adhesive. The adhesive capability of a sealant largely depends on the structure of the polymer component, as well as the presence of components in the sealant that enhance this property. The structure and condition of the substrate surface significantly affect the nature of the interaction between the adhesive and the substrate. Various methods are used to determine the strength of the adhesive bond, differing in the type of applied loads and the nature of the surface fracture. An important indicator is the determination of the wetting angle of the substrate by the sealant, which characterizes the surface energy. The durability of adhesive bonds is significantly influenced by environmental factors as well as operational conditions. Moisture, atmospheric oxygen, ultraviolet radiation, and microorganisms have a particularly strong effect on the properties of polymeric sealants.

show abstract

Optimization of parameters of polylactide processing on a 3D printer

Cited by 2 publications

References 13 publications

Polymer composites based on aromatic polyamide and fillers of spherical and layered structure for friction units of high-performance equipment

Polymer composites based on aromatic polyamide and fillers of spherical and layered structure for friction units of high-performance equipment

The influence of external and internal factors on ensuring adhesive interaction of a polymeric sealant with a substrate surface (a review)

Contact Info

Product

Resources

About