Firing mechanism of oxide-carbon refractories with phenolic resin binder

Zhang, Jiu; Mei, Guohui; Xie, Zhi; Zhao, Shumao

doi:10.1016/j.ceramint.2017.12.206

Cited by 9 publications

(6 citation statements)

References 24 publications

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“…18 The sample was mainly bound through the amorphous carbon network structure formed by the carbonisation of phenolic resin. 19,20 Generally, the strength of a network structure is low. Fracture mainly occurred at the amorphous carbon junction at the edge of the particle, and almost no particle fracture occurred; therefore, the strength of the sample was low.…”

Section: Mechanical Propertiesmentioning

confidence: 99%

Effect of aggregate type on the mechanical properties and slag resistance of Al₂O₃‐SiC‐C hot metal ladle bricks

Gao,

Nie,

et al. 2023

Int J Applied Ceramic Tech

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Aggregates are important factors that determine the performance of refractory materials. To explore the influence of aggregate types on refractory material properties, Al2O3‐SiC‐C bricks were prepared using bauxite, fused brown corundum, tabular corundum, fused white corundum, and microporous corundum with particle sizes of 5–3, 3–1, and ≤1 mm as aggregates, fused white corundum (≤.075 mm), SiC (≤.075 mm), or flake graphite (≤.15 mm) as the matrix, and a thermoset phenolic resin as the binder. Understanding the effects of the aggregate type on the mechanical properties and slag resistance of Al2O3‐SiC‐C bricks provides a theoretical basis for the selection of different aggregates during production. The results showed that the Al2O3‐SiC‐C brick had good high‐temperature mechanical properties and slag resistance when tabular corundum was used as an aggregate, owing to its high density and low content of cracks and impurity phases. When bauxite was used as an aggregate, its high‐temperature mechanical properties and slag resistance were poor, owing to its high porosity and impurity content.

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Section: Mechanical Propertiesmentioning

confidence: 99%

Effect of aggregate type on the mechanical properties and slag resistance of Al₂O₃‐SiC‐C hot metal ladle bricks

Gao,

Nie,

et al. 2023

Int J Applied Ceramic Tech

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“…Moreover, the addition of more thermosetting phenolic resin makes it more difficult for gases to escape, leading to the formation of more closed pores inside the specimen. The combined result of these factors leads to a decrease in the total and open porosities of the carbon-graphite insulation [14].…”

Section: Effect Of Thermosetting Phenolic Resin Addition On the Properties Of Carbongraphite Materialsmentioning

confidence: 99%

Mechanical properties and thermal conductivity of lightweight and high-strength carbon-graphite thermal insulation materials

Zhong

et al. 2022

J Mater Sci

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Thermal insulation composites are widely used in civil and military applications; however, it is difficult to achieve the synergy of multiple technical objectives such as lightweight, thermal insulation, high pressure resistance and high-temperature resistance by adopting traditional preparation techniques. In this study, a novel carbon-graphite thermal insulation material was rapidly prepared by exploiting the micro-thermal press additive manufacturing forming technology, and these multiple objectives were simultaneously achieved by introducing a large number of closed pores. It was found that the percentage of closed pores in the carbon-graphite insulation was increased by increasing the forming density or the amount of thermosetting phenolic resin added, but the thermal conductivity increased in parallel with the compressive strength, while the addition of pre-covered expandable graphite was able to achieve the synergy of high compressive strength and low thermal conductivity. When the content of thermosetting phenolic resin was 25 wt%, forming density was 1.2 g·cm−3, and expandable graphite was clad twice, the prepared carbon-graphite insulation exhibited a closed porosity/porosity ratio, compressive strength, and thermal conductivity of 48.92%, 16.432 MPa, and 0.743 W·m −1 K−1, which has the advantages of lightweight, high compressive strength, heat insulation and high-temperature resistance and has good prospects for industrial applications.

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“…The thermal performance and thermal decomposition of the resins used as a construction adhesive for raw materials has also been studied. Zhang et al (2018) investigated the firing mechanisms of oxide-carbon refractories with a phenolic resin binder, the heat absorption and release, and the weight loss of the binder. The results determined that a temperature between 400 °C to 600 °C represented a critical stage, in which significant weight loss and a decrease in strength would occur.…”

Section: Introductionmentioning

confidence: 99%

Charring properties and temperature profiles of laminated bamboo under single side of ISO 834 fire exposure

Cui

et al. 2020

BioRes

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The charring properties and temperature profiles were studied for laminated bamboo exposed on one-side to ISO 834 fire. A linear model was adopted to represent the charring depth-time relationship. The average charring rate of laminated bamboo was around 1 mm/min, and the charring rate decreased as the total time increased. The temperature of the char front was approximately 270 °C, which was determined via analysis of the time-temperature curve. An additional mathematic model was developed to predict the temperature distribution in the uncharred zone under such conditions, and an abrupt change in temperature was witnessed near the char front. When compared to several different timber species found in previous literature and fire resistance standards, the charring rate of laminated bamboo was relatively high; therefore, future research should focus on way to strengthen the fire retardancy of laminated bamboo.

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Firing mechanism of oxide-carbon refractories with phenolic resin binder

Cited by 9 publications

References 24 publications

Effect of aggregate type on the mechanical properties and slag resistance of Al₂O₃‐SiC‐C hot metal ladle bricks

Effect of aggregate type on the mechanical properties and slag resistance of Al₂O₃‐SiC‐C hot metal ladle bricks

Mechanical properties and thermal conductivity of lightweight and high-strength carbon-graphite thermal insulation materials

Charring properties and temperature profiles of laminated bamboo under single side of ISO 834 fire exposure

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Firing mechanism of oxide-carbon refractories with phenolic resin binder

Cited by 9 publications

References 24 publications

Effect of aggregate type on the mechanical properties and slag resistance of Al2O3‐SiC‐C hot metal ladle bricks

Effect of aggregate type on the mechanical properties and slag resistance of Al2O3‐SiC‐C hot metal ladle bricks

Mechanical properties and thermal conductivity of lightweight and high-strength carbon-graphite thermal insulation materials

Charring properties and temperature profiles of laminated bamboo under single side of ISO 834 fire exposure

Contact Info

Product

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Effect of aggregate type on the mechanical properties and slag resistance of Al₂O₃‐SiC‐C hot metal ladle bricks

Effect of aggregate type on the mechanical properties and slag resistance of Al₂O₃‐SiC‐C hot metal ladle bricks