Gas Evolution Quantitative Analysis at a Temperature of 900°C of a Cellulose Mixture Modified by Mineral Additives

Zawieja, Z.; Sawicki, J.

doi:10.1515/amm-2016-0177

Cited by 3 publications

(3 citation statements)

References 14 publications

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“…The alternative solution available on the commercial market is a material based on cellulose [7] that solves the mechanical processing problem while providing similar thermal insulation. Unfortunately, it contains organic binders that are a source of very strong gas-forming effects taking place during high-temperature thermal treatment [8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

“…This article presents studies on a qualitative analysis of the gases produced per mass unit at a temperature of up to 900 °C from the materials used for gating systems in singleuse sand moulds. Various materials were tested-all characterised by an original patented composition [6], made of paper pulp originating from waste paper and mineral additions which could be used for producing moulds for gating systems [10,11]. In the original samples, expanded vermiculite, microspheres and expanded perlite were employed as composition modifiers in view of their interesting chemical and physical properties such as thermal resistance, specific gravity, water absorbency and resistance to fire.…”

Section: Introductionmentioning

confidence: 99%

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The gas evolution of a modified cellulose mixture used for gating systems in the no-bake mould process

Zawieja

Sawicki

2021

J Therm Anal Calorim

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This paper shows the results of a study of gas evolution from a patented modified cellulose mix used in the production of no-bake casting moulds. The modified cellulose mixture was used for investigation with additives such as expanded perlite, expanded vermiculite and microspheres. The binder was an inorganic resin based on commercial technology, called Geopol. Samples were tested in different compositions in order to show the influence of all the additives mentioned. Two different methods were used—one was based on TG–TDG–MS investigation and the other was based on pyrolysis combined with a gas composition analyser. Investigations of both methods were carried out at temperatures up to 900 °C. The results showed that the gas emissions during thermal degradation of all the modified mixtures did not constitute substances that are hazardous or dangerous to health. Therefore, the material proposed can be used as a solution that is more environmentally friendly when compared to formulas which exist on the market and are abundant in harmful compounds.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

The gas evolution of a modified cellulose mixture used for gating systems in the no-bake mould process

Zawieja

Sawicki

2021

J Therm Anal Calorim

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“…Pure or modified, cellulose is increasingly becoming the subject of numerous scientific studies. These studies endeavor to elucidate the mechanisms and processes which take place in cellulose-based materials when external conditions, such as temperature, change [12,13,14,17,21,22,23,25,26]. A high-temperature thermal treatment of cellulose-based materials naturally results in thermal degradation associated with mass loss which turns into gaseous by-products.…”

Section: Introductionmentioning

confidence: 99%

Gas Evolution Qualitative Analyses From Modified Cellulose Mixtures During Thermal Degradation in Air and Argon

Zawieja¹,

Sawicki²

2017

Adv. Sci. Technol. Res. J.

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This paper presents the application of mineral additives, such as expanded perlite, expanded vermiculite and microspheres in items used in founding. Mixed with paper pulp and aluminosilicate resin as a binder, these additives are the base of a mixture patented by the authors, which can be used in the production of pipe shapes and connectors with a circular cross-section in casting systems in the founding industry. These mixtures were subjected to TG thermal degradation during which a quantitative analysis of the emitted fumes was carried out. The analysis did not detect any other compounds than those formed by the combustion of cellulose materials, which indicated that no chemical reaction took place between the applied additives and cellulose at high temperatures.

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Effect of Carbon in Fabrication Al-SiC Nanocomposites for Tribological Application

et al. 2017

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Aluminium-based hybrid composites are a new class of advanced materials with the potential of satisfying the demands in engineering applications. This paper describes the effects of carbon addition on the formation and properties of AMC with SiC nanoparticles reinforcement. The composites were produced via mechanical alloying followed by hot pressing. Three forms of carbon, graphite (GR), multiwalled carbon nanotubes (CNTs), and, for the first time, glassy carbon (GC), were used for the hybrid composites manufacturing and compared with tribological properties of Al-SiC composite without carbon addition. GC and CNTs enhanced formation of Al-SiC composite particles and resulted in a homogeneous distribution of reinforcing particles. On the other hand, GR addition altered mechanochemical alloying and did not lead to a proper distribution of nanoparticulate SiC reinforcement. Hot pressing technique led to the reaction between Al and carbon as well as SiC particles and caused the formation of Al4C3 and γ-Al2O3. The subsistence of carbon particles in the composites altered the predominant wear mechanisms since the wear reduction and the stabilization of the friction coefficient were observed. GC with simultaneous γ-Al2O3 formation in the hybrid Al-SiC(n)-C composites turned out to be the most effective additive in terms of their tribological behaviour.

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Gas Evolution Quantitative Analysis at a Temperature of 900°C of a Cellulose Mixture Modified by Mineral Additives

Cited by 3 publications

References 14 publications

The gas evolution of a modified cellulose mixture used for gating systems in the no-bake mould process

The gas evolution of a modified cellulose mixture used for gating systems in the no-bake mould process

Gas Evolution Qualitative Analyses From Modified Cellulose Mixtures During Thermal Degradation in Air and Argon

Effect of Carbon in Fabrication Al-SiC Nanocomposites for Tribological Application

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