Registration Number
0224U032653,
(0123U103584)
, R & D reports
Title
Development of a hydrogel composition for fire-resistant glass units and its production technology
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Розроблення науково-обґрунтованих основ створення композиції для подальшого застосування у вогнетривкому склопакеті, при отвердженні якої утворюється прозорий мінерально- органічний гідрогель, який при дії високих температур перетворюється на мінерально-карбоновий ксерогель.
Head
Varvarenko Sergii M., Доктор хімічних наук
Registration Date
29-11-2024
Organization
Lviv Polytechnic National University
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Creation of a transparent composition for filling glass units, which are part of structures with increased fire resistance due to the formation of a combined mineral-polymer hydrogel, which at high temperatures turns into a highly porous mineral-carbon fire-resistant material capable of preventing the propagation of radiant heat and flame for a specified time.
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A method for the synthesis of acrylamide, acrylic acid and N,N-methylene bisacrylamide branched copolymers has been developed, the aqueous solutions of which at concentrations up to 30% obey the regularities of the flow of Newtonian fluids, which makes it possible to create low-viscosity filler compositions on their basis. The obtained copolymers are characterized by spectroscopy methods.
Using polymer-analogous transformations and intermolecular structuring, polymeric hydrogels have been obtained. The regularities of their synthesis have been investigated and graphical and mathematical dependencies describing polycondensation reactions in the selected system and the properties of polymer hydrogels have been obtained. A correlation analysis of experimental data was carried out.
On the basis of separate studies and full-factor experiments, the composition, concentration and time limits of stability, and conditions (pH of the solution not higher than 2 when using citric acid and glycerol as stabilizers in the reaction medium) were established, which make it possible to obtain transparent (light transmission above 85%) hydrogels based on polysilicic acid sol. The conditions and the optimal sequence of technological operations in the manufacture of the composition for the production of a combined transparent polymer-mineral hydrogel have been determined. A method for the manufacture of double-glazed windows, the inner space of which is filled with the developed hydrogel, was developed. The class of samples with a size of 250*250 mm fire resistance was determined, which made it possible to optimize the selected parameters and establish the relationship between its refractory characteristics and thickness.
The EI30 fire resistance class for double-glazed windows is achieved with a 7 mm hydrogel layer, while an 11 mm layer suffices for EI45. Prototype double-glazed windows of various dimensions were created, along with a functional model of a fire-resistant double-glazed
Product Description
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Bordeniuk Olena Yu.
Bukartyk Nataliia M.
Varchuk Diana Ya.
Kapatsila Solomiia M.
Lukachuk Olena V.
Nadashkevych Zoriana Ya.
Nosova Nataliia H.
Poliak Olha Ye.
Samaryk Volodymyr Ya.
Stasiuk Anna V.
Khomyak Semen V.
Chervatenko Oleksandra M.
Yartys Anatolii A.
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2026-06-23
