Mineral wool melt fiberization on a spinner wheel

Širok, Brane; Bizjan, Benjamin; Orbanić, Alen; Bajcar, Tom

doi:10.1016/j.cherd.2013.06.014

Cited by 24 publications

(19 citation statements)

References 6 publications

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“…Inspired by this natural process, man-made stone wool fibres are conventionally produced from a stone melt by a cascade spinning process to form fibres that are on average 3-4 µm in diameter. 2,3 Stone wool fibres are a remarkably versatile type of fibres and may for example be used as a component in brake pad composites. Arguably more well-known are the stone wool products (Fig.…”

Section: Introductionmentioning

confidence: 99%

“…The stone wool fibres in stone wool materials are bound together by an adhesive, termed a binder, typically in an amount of 1-10 wt% of the fibres, and these materials are conventionally produced by spraying an aqueous binder system into the cloud of newly formed stone wool fibres after the cascade spinning process. 2,3 The ensemble is then collected and transferred into a curing oven where the binder is cured by blowing heated air through the stone wool. 2,3 Traditional stone wool binder systems are based on phenol-formaldehyde resins, 4 which may for example be modified with the addition of urea.…”

Section: Introductionmentioning

confidence: 99%

“…2,3 The ensemble is then collected and transferred into a curing oven where the binder is cured by blowing heated air through the stone wool. 2,3 Traditional stone wool binder systems are based on phenol-formaldehyde resins, 4 which may for example be modified with the addition of urea. 4,5 Other examples of conventional binder systems comprise acrylic-based and carbohydrate-based binders.…”

Section: Introductionmentioning

confidence: 99%

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Towards greener stone shot and stone wool materials: binder systems based on gelatine modified with tannin or transglutaminase

et al. 2018

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In the pursuit of greener stone wool and related materials, the development, study and discussion of strong binder systems for such materials based on gelatine modified with tannin or transglutaminase are presented. The first systematic studies and direct comparisons of gelatines with four different gel strengths modified with 3-50% chestnut tree tannin or transglutaminase are presented and discussed.The development of these non-toxic, biopolymer-based binder systems was achieved using composite bars comprising stone shots with submillimeter diameters as a versatile model for stone wool. Contrary to conventional binder systems, the gelatine-based binder systems were able to cure at ambient temperature, and increased unaged and aged mechanical strengths combined with decreased binder solubility were generally observed as a function of increased gel strength and viscosity of the gelatine component.Several of the compositions resulted in mechanical strengths before and after ageing treatments that were within the range of conventional binder systems. Intriguingly, the gelatine-based binder compositions generally appeared less sensitive towards ageing treatment than conventional binders and in several cases even displayed mechanical strengths after ageing treatments that were at a similar level or better than the corresponding unaged strengths. The developed binder systems thus displayed unprecedented "self-healing" properties. The first DMA studies of cross-sections of the composite bars showed that these binder systems could withstand temperatures well above those required and/or commonly encountered in for example the production and general use of stone wool products. The first SEM studies of the composite bars revealed that the binders created a honeycomb-like structure around the stone shots with several thinner bridging points between adjacent stone shots. The development of this highly promising new generation of bio-inspired binder technologies is expected to enable the manufacture of greener stone wool and related materials through the use of non-toxic and natural components that enable an environmentally improved route to these materials via the reduction of adverse environmental effects such as high energy consumption and emissions during the curing process.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Towards greener stone shot and stone wool materials: binder systems based on gelatine modified with tannin or transglutaminase

et al. 2018

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“…However, the required high temperature makes the fiberizing devices suffer from intensive corrosion, which shortens their operational lifetime. Cascade process has been modelled by using the finite element simulation, providing valuable information on the optimum conditions of the cascade process of stone wool fiber spinning …”

Section: Introductionmentioning

confidence: 99%

“…Cascade process has been modelled by using the finite element simulation, providing valuable information on the optimum conditions of the cascade process of stone wool fiber spinning. [5][6][7][8][9] This work also contributes to stabilization of fiber spinning process by properly modifying processing parameters in response to the variation of fiber spinnability of melts as a result of compositional variation. The mechanical, thermal and optical properties of glass fibers can dramatically be changed by variation in the process parameters such as fiber stretching force, melt flow, cooling rate, viscosity, and heat-treatment.…”

Section: Introductionmentioning

confidence: 99%

Fiber spinnability of glass melts

Yue

Zheng

2016

Int J of Appl Glass Sci

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Fiber spinnability is the ability of a glass‐forming melt to be steadily stretched and spun into defect‐free fiber filaments. However, its quantification has not been well established owing to many controlling factors such as melt fragility, melt strength, surface tension, liquidus temperature, liquidus viscosity, and crystallization. To understand and quantify the fiber spinnability of a glass melt, we consider two key aspects: fiberizing viscosity window and melt stability. The fiberizing viscosity window is defined by the upper and lower viscosity limits. Fibers rupture above the upper viscosity limit, whereas a stable melt stream cannot form below the lower limit (ηlow). We introduce a simple parameter to quantify fiber spinnability, namely, Kfib=ηL/ηlow, where ηL is the viscosity at liquidus temperature (TL). A fiber can only form if Kfib>1. To quantify melt stability we propose the parameter of S=(TL‐TC)/(TL‐Tg), where TL and TC are the liquidus temperature, and the onset temperature of melt crystallization during cooling, respectively. Both parameters (Kfib and S) are important for a rational design of glass fiber compositions, and fiberizing process. We use two basalt melts as examples of this study to demonstrate the high sensitivity of fiber spinnability to a minor variation in chemical composition of melts.

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Stone and Glass Wool

Yue

Solvang

2021

Encyclopedia of Glass Science, Technology, History, and Culture

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Mineral wool melt fiberization on a spinner wheel

Cited by 24 publications

References 6 publications

Towards greener stone shot and stone wool materials: binder systems based on gelatine modified with tannin or transglutaminase

Towards greener stone shot and stone wool materials: binder systems based on gelatine modified with tannin or transglutaminase

Fiber spinnability of glass melts

Stone and Glass Wool

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