Effect of Na2CO3 as foaming agent on dynamics and structure of foam glass melts

2014 ◽  
Vol 400 ◽  
pp. 1-5 ◽  
Author(s):  
Rasmus R. Petersen ◽  
Jakob König ◽  
Morten M. Smedskjaer ◽  
Yuanzheng Yue
Keyword(s):  
Foam Glass ◽  
Glass Melts ◽  
Foaming Agent

Study of the Water-Glass Role in the Foam Glass Synthesis Using Glycerol Foaming Agent

2021 ◽  
Vol 316 ◽  
pp. 153-158
Author(s):  
Boris M. Goltsman ◽  
Lyubov A. Yatsenko ◽  
Natalia S. Goltsman
Keyword(s):  
Porous Structure ◽  
Structure Formation ◽  
Water Glass ◽  
Glass Batch ◽  
Foam Glass ◽  
Foaming Agent ◽  
Additive Type ◽  
Highly Porous ◽  
Material Porosity

The article discusses the peculiarities of the "water-glass – glycerol" foaming mixture components interaction during foam glass synthesis. The important role of the foaming additive type in the foam glass porous structure formation was described, the main foaming substances were listed. The obtaining and researching technology of the samples was described, the compositions of the initial batches using the "water-glass – glycerol" mixture were developed. It was shown that a material with a highly porous structure and density below 500 kg/m3 can be obtained only with the combined introduction of water-glass and glycerol. In this case, mixtures with a predominance of water-glass in the foaming mixture possess optimal properties. Using DSC, it was shown that the addition of water-glass to the mixture completely eliminates the evaporation of glycerol at lower temperatures and intensifies its combustion at higher temperatures. Thus, the addition of water-glass to the glycerol-based foam glass batch allows glycerol to be saved up to higher temperatures that increases the resulting material porosity.

Preparation of Foam Glass Ceramics from Phosphorus Slag

2010 ◽  
Vol 105-106 ◽  
pp. 600-603 ◽  
Author(s):  
Ben Xu ◽  
Kai Ming Liang ◽  
J.W. Cao ◽  
Y.H. Li
Keyword(s):  
Glass Powder ◽  
Foam Glass ◽  
Glass Ceramics ◽  
Processing Parameters ◽  
Treatment Temperature ◽  
Homogeneous Distribution ◽  
Sintering Process ◽  
Foaming Agent ◽  
Foaming Temperature ◽  
Foam Glass Ceramics

Phosphorus slag could be used to prepare wollastonite glass ceramics. With the aid of incorporated foaming agent, foam glass ceramics can be obtained via the sintering of the slag-based glass. After the glass powder reacted with graphite, macro-size pores with homogeneous distribution were formed. The level of porosity of the fabricated foams was controlled by varying heat treatment temperature and amount of foaming agent. It was found that the preferential processing parameters for producing foam glass ceramics were foaming temperature of 1000°C with holding time of 10 min and 1 wt. % of graphite. In this case, the porosity reached about 80%. The results show that dominant crystalline phase is wollastonite, and the high compression strength results from the crystallization of glass during sintering process.

scholarly journals The correction of foam glass composition based on its principal parameters

2021 ◽  
Vol 350 ◽  
pp. 00009
Author(s):  
Dmitry Safonchik ◽  
Svetlana Maksimovich
Keyword(s):  
Mechanical Characteristics ◽  
Glass Composition ◽  
Foam Glass ◽  
Cost Price ◽  
Foaming Agent ◽  
Insulating Material ◽  
Leading Position ◽  
The Cost ◽  
Foaming Temperature ◽  
Better Than

Thermal insulation materials are the main link in solving the problem of enclosing constructions energy efficiency. The number of heat insulators is relatively low, that`s why it is important to develop new insulators that would be better than the existing ones in their characteristics. Such heat-insulating material as foam glass is known, but it is practically not applied, despite the fact that it possesses high heatinsulating and mechanical characteristics, it is non-combustible, durable and environmentally friendly. All the advantages of foam glass are inferior to one drawback. It is the high cost price of this material. If the cost price of foam glass was reduced and its main characteristics were at the same level, foam glass would take a leading position among other heatinsulating materials. The article presents some information about the development of foam glass, in which dolomite flour is used as a foaming agent. The material proposed by the authors has a density of about 200 kg / m3, water absorption of 25%. The material is manufactured at maximum foaming temperature of 750 °C.

scholarly journals Foam glass using sodium hydroxide as foaming agent: Study on the reaction mechanism in soda-lime glass matrix

2019 ◽  
Vol 511 ◽  
pp. 177-182 ◽  
Author(s):  
Robson Couto da Silva ◽  
Evaldo Toniolo Kubaski ◽  
Ernandes Taveira Tenório-Neto ◽  
Michele Karoline Lima-Tenório ◽  
Sergio Mazurek Tebcherani
Keyword(s):  
Reaction Mechanism ◽  
Sodium Hydroxide ◽  
Glass Matrix ◽  
Foam Glass ◽  
Soda Lime ◽  
Soda Lime Glass ◽  
Foaming Agent

Influence of the Heat Treatment on the Structure and Property of the Foam Glass

2014 ◽  
Vol 488-489 ◽  
pp. 90-93
Author(s):  
Long Wu ◽  
Yi Hong Zhao ◽  
Rong Fa Chen ◽  
Hua Yang ◽  
Qing Qing Li ◽  
...  
Keyword(s):  
Heat Treatment ◽  
Compressive Strength ◽  
Calcium Carbonate ◽  
Physical Properties ◽  
Foam Glass ◽  
Xrd Analysis ◽  
Foaming Agent ◽  
Structure And Property ◽  
Metallurgical Structure

In this paper, the foam glass was made with 5 wt % calcium carbonate used as foaming agent. The macro morphology, physical properties and the metallurgical structure are discussed in detail by the modern means of DTA, SEM and XRD analysis. The results indicated that when the powders were foamed at 800°C for 20min, the property of the samples was best, the density was 0.706 g/cm3,and the compressive strength was 3.36Mpa.

Effect of Carbon as Foaming Agent on Pore Structure of Foam Glass

2010 ◽  
Vol 105-106 ◽  
pp. 765-768 ◽  
Author(s):  
Dong Sheng Lv ◽  
Xiu Hua Li ◽  
Lei Wang ◽  
Juan Juan Du ◽  
Jie Zhang
Keyword(s):  
Particle Size ◽  
Carbon Black ◽  
Heating Rate ◽  
Mechanical Performance ◽  
Foam Glass ◽  
Foam Formation ◽  
Heating Rates ◽  
Foaming Agent ◽  
Foam Structure ◽  
Powder Sintering

Insulation effect and mechanical performance of foam glass depend, to a large extent, on foam structure. Hence understanding foam formation is not only a problem of significant fundamental interest but also of tremendous practical impact. In this paper, foam growth was modeled comparing to grain growth theory in sintering. TG-DTG analysis of carbon black indicated that pre-oxidation took place prior to foaming temperature. Furthermore effects of heating rate and particle size of carbon black on foam structure have been taken into account. Several borosilicate foam glasses were fabricated by powder sintering process at different heating rates using carbon black of different particle sizes as foaming agent, respectively. It was found that increasing the heating rate tended to decrease the pre-oxidation of carbon black resulting in inhomogeneous foam distribution. Foam structure of sample heated at a rate of 8°C/min using carbon black with particle size of 0.15mm was optimal.

Study on the Critical Control of Foam Insulation Materials Produced by Waste TFT-LCD Glass

2014 ◽  
Vol 668-669 ◽  
pp. 74-78 ◽  
Author(s):  
Ling Ling She ◽  
Yu Wen Guo ◽  
Jiu Li Ruan ◽  
Qi Qiao ◽  
Shi Bing Sun
Keyword(s):  
Reaction Time ◽  
Melting Temperature ◽  
Oxygen Supply ◽  
Sintering Temperature ◽  
Foam Glass ◽  
Waste Glass ◽  
Optimal Conditions ◽  
Foaming Agent ◽  
Insulation Materials

The present work studied the critical control of foam insulation materials produced by waste TFT-LCD glass. The result showed that foam glass was affected by sintering temperature, as well as other factors such as foaming agent, oxygen supply agent and reaction time. The ordinary waste glass was used to drop the melting temperature of Waste TFT-LCD glass. The density of foam glass had a down-up trend with the increase of sintering temperature. The increase of ratio of foaming agent and oxygen supply agent led to a notable decrease of the density, while the change of reaction time exerted an unobvious influence on the density. The density of foam glass produced under the optimal conditions was 0.2211 g/cm3.

Investigation of the Raw Materials' Composition and Ratio Influence on the Structure and Properties of the Foamed Slag Glass

2016 ◽  
Vol 843 ◽  
pp. 183-188 ◽  
Author(s):  
E.A. Yatsenko ◽  
B.M. Goltsman ◽  
L.A. Yatsenko
Keyword(s):  
Raw Materials ◽  
Foam Glass ◽  
Thermal Power ◽  
Structure And Properties ◽  
Foaming Agent ◽  
Foaming Agents ◽  
Foamed Slag ◽  
Slag Glass ◽  
The Relationship ◽  
Foamed Slag Glass

The composition of the foam glass based on thermal power plant’s ash-slag waste – foamed slag glass – was developed. The synthesis of the samples based on the most widespread foaming agents was conducted at various temperatures. The structure and properties of the obtained samples were defined, the relationship between the type and amount of the introduced foaming agents and changes in the structure and properties of the samples were established. The best type of foaming agent for the synthesis of foamed slag glass has been selected. The production technology for products based on foamed slag glass was developed.

Study of Foam Glass with High Content of Fly Ash Using Calcium Carbonate as Foaming Agent

2012 ◽  
Vol 79 ◽  
pp. 263-265 ◽  
Author(s):  
Bo Chen ◽  
Keqiang Wang ◽  
Xingjun Chen ◽  
Anxian Lu
Keyword(s):  
Fly Ash ◽  
Calcium Carbonate ◽  
Foam Glass ◽  
Foaming Agent

Effect of Manganese Dioxide on Structure and Compressive Strength of Foam Glass

2014 ◽  
Vol 488-489 ◽  
pp. 94-97
Author(s):  
Long Wu ◽  
Yi Hong Zhao ◽  
Rong Fa Chen ◽  
Hua Yang ◽  
Qing Qing Li ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Compressive Strength ◽  
Physical Properties ◽  
Pore Size ◽  
Foam Glass ◽  
Xrd Analysis ◽  
Foaming Agent ◽  
Metallurgical Structure ◽  
Xrd Method ◽  
Uniform Pore Size

The MnO2 was used as foaming agent to produce the glass foams in this paper. The macro morphology, physical properties and the metallurgical structure were discussed in detail by the modern means of DTA, SEM and XRD analysis. The results indicated that the less dense and more uniform pore size of foam glass was prepared, and the good mechanical properties were obtained. And the main crystal was quartz, nepheline and albite by the XRD method.

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