The Study of Manufacturing Thermal Insulation Materials Based on Inorganic Polymers under Microwave Exposure

Rymar, Tatyana; Tatarchenko, Halyna; Fomin, Oleksij; Píštěk, Václav; Kučera, Pavel; Beran, Martin; Burlutskyy, Oleksij

doi:10.3390/polym14153202

Cited by 10 publications

(3 citation statements)

References 12 publications

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“…У публікації [12] для отримання теплової ізоляції проводять спікання розчину силікату натрію з борною кислотою при температурі 450-500 °С. Щоб вирішити проблеми низької в'язкості та поганої стабільності спінених матеріалів із силікагелю, спінений силікагель в роботі [13] Як гранульований заповнювач використовуються неспучені гранули на основі РС і оксиду цинку [17,18].…”

Section: рис 1 -теплоізоляційні вироби на основі гранульованого продуктуunclassified

Microwave Technology of Liquid-Glass Heat-Insulating Materials Based on a Granular Product

Rymar¹

2023

Вісник НТУ "ХПІ"

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The paper investigates the properties of liquid glass thermal insulation products obtained on the basis of granular products under the influence of microwave radiation. Due to the volumetric heat release in the thickness of the liquid glass composition, it is possible to obtain homogeneously structured materials by applying the technology of simultaneous porosization with volumetric expansion of both granules and binder. Thanks to volumetric heating and the mechanism of "non-thermal" effect of microwave radiation on the processing objects, the duration and temperature of their heating is significantly reduced, as well as the operational properties of the products are improved. The properties of materials obtained by this technology are compared with the properties of materials obtained by binding pre-swollen granules. It was proved that the simultaneous swelling of granules with a binder made it possible to obtain materials of a monolithic, uniformly porous structure with high physical and mechanical parameters and an order of magnitude lower indicators of water absorption and sorption moisture due to the dense packing of the granules and the uniform distribution of the binder in the intergranular space. The developed technology for the production of composite materials in the form of heat-insulating products of various configurations by means of simultaneous porosization with volume expansion of granules and binding under the action of microwave radiation allows to obtain materials with a better set of operational characteristics than in the case of binding pre-swollen granules at lower energy costs for their production because it excludes the stage of separate swelling of the granules. The resulting composite thermal insulation materials do not deform and have a fairly high strength for their average density. They are practically incompressible, and this is a very important fact, since the compression of heat insulating materials over time leads to an increase in its thermal conductivity and a decrease in the heat-shielding properties of the structure.

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Section: рис 1 -теплоізоляційні вироби на основі гранульованого продуктуunclassified

Microwave Technology of Liquid-Glass Heat-Insulating Materials Based on a Granular Product

Rymar¹

2023

Вісник НТУ "ХПІ"

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“…To reduce the emission level of nitrogen oxides, it was proposed to use recirculation of exhaust gases [11,12], additional purification in special catalytic reactors [13,14], as well as to apply technologies of humidification of supercharged air and water supply to the diesel cylinder [15,16]. However, at the same time, the effective power of the diesel engine decreases and the specific fuel consumption increases [17,18].…”

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confidence: 99%

Analysis of methods of managing the environmental safety of the navigation passage of ships of maritime transport

Sagin,

Madey

2023

TAPR

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The requirements of the MARPOL international convention on ensuring the environmental performance of marine diesel engines in relation to the emission of sulfur oxides, as well as marine fuels during navigation passages of sea transport vessels in special ecological areas, are given. The use of scrubber cleaning of exhaust gases and the use of fuel mixtures, which include biodiesel fuel, are considered as methods that meet these requirements. The research was carried out on ships of the Bulker Carrier class with deadweight of 63,246 tons during the navigation transition between the ports of Northern Europe. One of the vessels used scrubber cleaning of exhaust gases as a method of environmental safety management. The other is the use of fuel mixtures, which include biodiesel fuel. Both vessels are equipped with a 5S60ME-C8.2 MAN-Diesel&Turbo marine diesel engine as the main engine, and three 6EY18ALW Yanmar diesel engines as auxiliary engines. The ratio of sulfur oxides to carbon oxides – SO2/CO2 – was chosen as an indicator for evaluating the effectiveness of environmental safety management methods. This value was monitored and regulated by an automatic monitoring system. It was found that both methods meet the requirements of the MARPOL convention, namely, they will support the SO2/CO2 ratio in the range of 2.29–4.17 (when in special environmental control zones) and in the range of 6.46–20.83 (when in outside the zone of special environmental control). The use of environmental safety management methods increases energy costs for ensuring this process. When using exhaust gas scrubbing, additional power losses reach 237–278 kW. In the case of using a fuel mixture that includes biodiesel fuel, power losses amount to 18–20 kW. It has been experimentally confirmed that the use of a fuel mixture that includes biodiesel fuel is characterized by a lower level of environmental sustainability. At the same time, compared to the use of scrubber cleaning of exhaust gases, this method requires less energy consumption and is also characterized by simpler additional equipment. In this regard (and also taking into account that all the requirements of Annex VI MARPOL are provided), it is recommended as the main one to ensure the environmental safety of navigation passages of sea transport vessels.

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“…Зв`язуюче, що використовується для виготовлення композиційних теплоізоляційних матеріалів, містить: як основний компонент -рідинне натрієве скло, як модифікатори коагуляційно-кристалізаційних процесівоксид цинку і напівводний гіпс, як пороутворювач -пероксид водню, як піностабілізатор -оксиетильований алкілфенол. Як гранульований заповнювач використовуються неспучені гранули на основі РС і оксиду цинку [15][16].…”

Section: рис 1 -переваги нвч технології тім в порівнянні з технологіє...unclassified

Поліпшення Властивостей Теплоізоляційних Виробів На Основі Рідинного Скла Шляхом Модифікації Під Впливом Нвч Випромінювання

Римар¹

2020

MEIT

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В роботі проводиться дослідження властивостей рідинноскляних теплоізоляційних матеріалів, отриманих на основі гранульованих продуктів під дією НВЧ випромінювання. Наводяться хімічні та фізичні методи модифікації рідинноскляних композицій, які можна застос

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The Study of Manufacturing Thermal Insulation Materials Based on Inorganic Polymers under Microwave Exposure

Cited by 10 publications

References 12 publications

Microwave Technology of Liquid-Glass Heat-Insulating Materials Based on a Granular Product

Microwave Technology of Liquid-Glass Heat-Insulating Materials Based on a Granular Product

Analysis of methods of managing the environmental safety of the navigation passage of ships of maritime transport

Поліпшення Властивостей Теплоізоляційних Виробів На Основі Рідинного Скла Шляхом Модифікації Під Впливом Нвч Випромінювання

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