ANALYSIS OF FOAMING ACTIVITY OF DIFFERENT TYPES OF FOAMING AGENTS IN FOAM GLASS SYNTHESIS
The relevance of the research is explained by the decisive influence of various foaming agents on formation of qualitative and quantitative characteristics of the porous structure of foam glass. The main aim of the research is to study the foaming activity of various types of foaming agents in the s...
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| Format: | Article |
| Language: | Russian |
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Tomsk Polytechnic University
2020-12-01
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| Series: | Известия Томского политехнического университета: Инжиниринг георесурсов |
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| Online Access: | http://izvestiya.tpu.ru/archive/article/view/2950/2373 |
| _version_ | 1818615059802226688 |
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| author | Boris M. Goltsman |
| author_facet | Boris M. Goltsman |
| author_sort | Boris M. Goltsman |
| collection | DOAJ |
| description | The relevance of the research is explained by the decisive influence of various foaming agents on formation of qualitative and quantitative characteristics of the porous structure of foam glass. The main aim of the research is to study the foaming activity of various types of foaming agents in the synthesis of foam glass and to identify the physical-chemical processes that occur during the heat treatment of the mixture using these types of foaming agents. Objects: foam glass samples, where the main raw material was the cullet of colorless container glass of the BT-1 brand, and the relevant foaming agents were: calcite (chalk), carbon (anthracite), glycerol. Methods: the synthesis using powder technology; firing in the temperature range of 800–900 °C with an exposure time of 20 minutes. Results. The most relevant foaming agents: carbon (carbon in various forms, organic compounds) and carbonate (carbonates of alkali and alkaline earth metal) were identified. The synthesis of foam glass samples based on the selected foaming agents was carried out. Both anthracite and chalk in coarse-grained form make it possible to obtain a porous structure with a density below 300 kg/m3. An increase in temperature and the amount of foaming agent leads to decrease in density for both compositions by reducing the viscosity of the glass melt and increasing the pressure of the gases in the pores. The structure of the samples of both compositions is uneven, which indicates the influence of the foaming agent particle size on the porosity. The differences in the color of the samples based on various foaming agents were explained. They are associated with differences in the physicochemical processes of interaction of the foaming agent with the molten glass. In the heat treatment of samples using glycerol, the porous structure is completely absent, and the density of the samples exceeds 1400 kg/m3, which corresponds to densely sintered material, which is explained by its fast burnout before the batch turns into a dense sinter capable of holding foaming gases. |
| first_indexed | 2024-12-16T16:27:53Z |
| format | Article |
| id | doaj.art-5956e58751d448cf9be951ee95a29d33 |
| institution | Directory Open Access Journal |
| issn | 2500-1019 2413-1830 |
| language | Russian |
| last_indexed | 2024-12-16T16:27:53Z |
| publishDate | 2020-12-01 |
| publisher | Tomsk Polytechnic University |
| record_format | Article |
| series | Известия Томского политехнического университета: Инжиниринг георесурсов |
| spelling | doaj.art-5956e58751d448cf9be951ee95a29d332022-12-21T22:24:41ZrusTomsk Polytechnic UniversityИзвестия Томского политехнического университета: Инжиниринг георесурсов2500-10192413-18302020-12-013311217317910.18799/24131830/2020/12/2950ANALYSIS OF FOAMING ACTIVITY OF DIFFERENT TYPES OF FOAMING AGENTS IN FOAM GLASS SYNTHESISBoris M. Goltsman0Platov South Russian State Polytechnic University (NPI)The relevance of the research is explained by the decisive influence of various foaming agents on formation of qualitative and quantitative characteristics of the porous structure of foam glass. The main aim of the research is to study the foaming activity of various types of foaming agents in the synthesis of foam glass and to identify the physical-chemical processes that occur during the heat treatment of the mixture using these types of foaming agents. Objects: foam glass samples, where the main raw material was the cullet of colorless container glass of the BT-1 brand, and the relevant foaming agents were: calcite (chalk), carbon (anthracite), glycerol. Methods: the synthesis using powder technology; firing in the temperature range of 800–900 °C with an exposure time of 20 minutes. Results. The most relevant foaming agents: carbon (carbon in various forms, organic compounds) and carbonate (carbonates of alkali and alkaline earth metal) were identified. The synthesis of foam glass samples based on the selected foaming agents was carried out. Both anthracite and chalk in coarse-grained form make it possible to obtain a porous structure with a density below 300 kg/m3. An increase in temperature and the amount of foaming agent leads to decrease in density for both compositions by reducing the viscosity of the glass melt and increasing the pressure of the gases in the pores. The structure of the samples of both compositions is uneven, which indicates the influence of the foaming agent particle size on the porosity. The differences in the color of the samples based on various foaming agents were explained. They are associated with differences in the physicochemical processes of interaction of the foaming agent with the molten glass. In the heat treatment of samples using glycerol, the porous structure is completely absent, and the density of the samples exceeds 1400 kg/m3, which corresponds to densely sintered material, which is explained by its fast burnout before the batch turns into a dense sinter capable of holding foaming gases.http://izvestiya.tpu.ru/archive/article/view/2950/2373foam glassfoamingfoaming agentcarboncalciteglycerol |
| spellingShingle | Boris M. Goltsman ANALYSIS OF FOAMING ACTIVITY OF DIFFERENT TYPES OF FOAMING AGENTS IN FOAM GLASS SYNTHESIS Известия Томского политехнического университета: Инжиниринг георесурсов foam glass foaming foaming agent carbon calcite glycerol |
| title | ANALYSIS OF FOAMING ACTIVITY OF DIFFERENT TYPES OF FOAMING AGENTS IN FOAM GLASS SYNTHESIS |
| title_full | ANALYSIS OF FOAMING ACTIVITY OF DIFFERENT TYPES OF FOAMING AGENTS IN FOAM GLASS SYNTHESIS |
| title_fullStr | ANALYSIS OF FOAMING ACTIVITY OF DIFFERENT TYPES OF FOAMING AGENTS IN FOAM GLASS SYNTHESIS |
| title_full_unstemmed | ANALYSIS OF FOAMING ACTIVITY OF DIFFERENT TYPES OF FOAMING AGENTS IN FOAM GLASS SYNTHESIS |
| title_short | ANALYSIS OF FOAMING ACTIVITY OF DIFFERENT TYPES OF FOAMING AGENTS IN FOAM GLASS SYNTHESIS |
| title_sort | analysis of foaming activity of different types of foaming agents in foam glass synthesis |
| topic | foam glass foaming foaming agent carbon calcite glycerol |
| url | http://izvestiya.tpu.ru/archive/article/view/2950/2373 |
| work_keys_str_mv | AT borismgoltsman analysisoffoamingactivityofdifferenttypesoffoamingagentsinfoamglasssynthesis |