THERMOSETTING BINDERS FOR POLYMER COMPOSITES (review)

Mukhametov, R. R.; Petrova, A. P.

doi:10.18577/2071-9140-2019-0-3-48-58

Cited by 10 publications

(3 citation statements)

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“…Большинство применяемых для этих целей емкостей изготовлены из термопластичных полипропилена или полиэтилена, однако по качеству они уступают такому композиционному материалу, как стеклопластик [3]. Как следует из таблицы, стеклопластик отличается важными преимуществами [4]. Срок эксплуатации стеклопластиковых резервуа-ров составляет около 30 лет (полипропиленовыхдо 20, полиэтиленовых -7 лет для слабоагрессивных жидкостей и 3 года для агрессивных).…”

Section: инновационные технологии и оборудование Innovative Technolog...unclassified

“…Это дешевый и доступный материал, обладающий хорошими технологическими свойствами [3]. Армирующим элементом стеклопластика слу-жат волокна S-стекла с высокими показателями прочности на растяжение и сжатие, термостойкости и ударопрочности [4].…”

Section: инновационные технологии и оборудование Innovative Technolog...unclassified

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UAV-Mounted Tank for Processing Agricultural Land with Liquid Agrochemicals

Magdin,

Pripadchev,

Gorbunov

et al. 2024

S-h. maš. tehnol.

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To process agricultural crops, unmanned aerial vehicles carrying tanks with liquid chemicals are used. The paper highlights that containers made of polypropylene and polyethylene exhibit inferior qualities compared to those made of fiberglass, specifically, in terms of strength, thermal stability, resistance to ultraviolet rays, and service life. (Research purpose) To design and manufacture a tank made of composite fiberglass material with a water hammer damper. (Materials and methods) S-glass and epoxy vinyl ester resin were selected for the tank, as they exhibit superior resistance to chemical influences. To construct the tank elements, spray application, impregnation of glass fiber filler in a closed form, and winding were used. (Results and discussion) A comparative analysis was conducted on tank models, assessing their performance with and without a water hammer damper. The eﬀectiveness of the suggested solution has been substantiated through the utilization of KOMPAS-3D software in the KompasFlow application, Within this software, the hydraulic shock is simulated to propagate inside the tank, reflecting oﬀ the walls, and gradually diminishing. Load and strength calculations for the fiberglass tank were performed by considering fiberglass parameters using the APM FEM application. (Conclusions) A tank model designed for application of liquid chemical substances in crop spraying from unmanned aerial vehicles has been developed. Innovative methods were employed in the manufacturing of the tank components. Additionally, careful consideration was given to the feasibility of maintenance and reparability. The tank’s volume (experimental sample) measures 0.0158 cubic meters, with a length of 480 millimeters, a width of 216 millimeters, a thickness of 3.6 millimeters, and a weight of approximately 4 kilograms. The design for mounting the composite tank on the unmanned aerial vehicle ensures that the weight of the unmanned aerial vehicle does not impact the tank.

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Section: инновационные технологии и оборудование Innovative Technolog...unclassified

UAV-Mounted Tank for Processing Agricultural Land with Liquid Agrochemicals

Magdin,

Pripadchev,

Gorbunov

et al. 2024

S-h. maš. tehnol.

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“…LCM processes can be significantly cheaper due to reduced labor cost and higher time and energy efficiency [ 7 , 8 , 9 , 10 , 11 ]. In addition, these methods make it possible to obtain products of complex shape in one cycle, which reduces the load of the equipment, and the resulting components are deprived of additional joints.…”

Section: Introductionmentioning

confidence: 99%

Binders Used for the Manufacturing of Composite Materials by Liquid Composite Molding

Terekhov

Chistyakov

2021

Polymers

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Binders, or tackifiers, have become widespread in the production of new composites materials by liquid composite molding (LCM) techniques due to their ability to stabilize preforms during laying-up and impregnation, as well as to improve fracture toughness of the obtained composites, which is very important in aviation, automotive, ship manufacturing, etc. Furthermore, they can be used in modern methods of automatic laying of dry fibers into preforms, which significantly reduces the labor cost of the manufacturing process. In this article, we review the existing research from the 1960s of the 20th century to the present days in the field of creation and properties of binders used to bond various layers of preforms in the manufacturing of composite materials by LCM methods to summarize and synthesize knowledge on these issues. Different binders based on epoxy, polyester, and a number of other resins compatible with the corresponding polymer matrices are considered in the article. The influence of binders on the preforming process, various properties of obtained preforms, including compaction, stability, and permeability, as well as the main characteristics of composite materials obtained by various LCM methods and the advantages and disadvantages of this technology have been also highlighted.

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