Effect of Accelerated Thermal Aging on the Dispersion Stability of Fine-Denier Silicone Emulsions for Carbon Fiber Precursor Processing.
Saved in:
| Title: | Effect of Accelerated Thermal Aging on the Dispersion Stability of Fine-Denier Silicone Emulsions for Carbon Fiber Precursor Processing. |
|---|---|
| Authors: | Yang, Jae-Yeon1 (AUTHOR), Chung, Dong-Chul2 (AUTHOR), Kim, Kwan-Woo1,3 (AUTHOR) kkw1988@kcarbon.or.kr, Kim, Byung-Joo1,3 (AUTHOR) |
| Source: | Materials (1996-1944). Feb2026, Vol. 19 Issue 4, p702. 16p. |
| Subjects: | Thermal stability, Colloidal stability, Carbon fibers, Stabilizing agents, PAN-based carbon fibers, Microemulsions, Particle size distribution |
| Abstract: | Highlights: What are the main findings? Fine-denier silicone emulsions were prepared using disperser and colloid mill methods. Colloid mill emulsification produced smaller and more stable droplet sizes. Thermal aging at 50–70 °C mainly affected dispersion stability, not chemical structure. What are the implications of the main findings? Emulsification method strongly governs thermal stability of silicone emulsions. Stable dispersion at 3–5% concentration is suitable for PAN fiber processing. Colloid mill processing improves process stability in carbon fiber manufacturing. Fine-denier silicone emulsions play an important role in the polyacrylonitrile (PAN) precursor treatment process by reducing surface tension and preventing fiber fusion during thermal stabilization and carbonization. These emulsions are typically prepared by dispersing polydimethylsiloxane (PDMS) polymers with various functional groups into water through different emulsification methods. In this study, two types of silicone emulsions—one prepared using a mechanical disperser and the other using a high-shear colloid mill—were manufactured on a pilot scale and systematically compared. Thermal aging was conducted at 50 °C and 70 °C for approximately one month, and changes in particle size, dispersion stability, and physicochemical properties were evaluated. The colloid-mill emulsification method produced smaller and more uniform silicone particles and exhibited superior thermal and dispersion stability relative to the mechanically dispersed emulsion. NMR relaxation, Turbiscan multiple light scattering, and viscosity measurements confirmed that the colloid-mill emulsion maintained a stable microstructure with minimal aggregation even under elevated-temperature storage. These results demonstrate that high-shear emulsification is an effective approach for producing fine-denier silicone emulsions with enhanced stability, making the colloid-mill method a more reliable and practical route for preparing silicone-based oiling agents used during PAN precursor processing in carbon fiber manufacturing. [ABSTRACT FROM AUTHOR] |
| Copyright of Materials (1996-1944) is the property of MDPI and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
|
Full text is not displayed to guests.
Login for full access.
|
|
| FullText | Links: – Type: pdflink Text: Availability: 1 |
|---|---|
| Header | DbId: egs DbLabel: Engineering Source An: 191972843 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
| IllustrationInfo | |
| Items | – Name: Title Label: Title Group: Ti Data: Effect of Accelerated Thermal Aging on the Dispersion Stability of Fine-Denier Silicone Emulsions for Carbon Fiber Precursor Processing. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Yang%2C+Jae-Yeon%22">Yang, Jae-Yeon</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Chung%2C+Dong-Chul%22">Chung, Dong-Chul</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Kim%2C+Kwan-Woo%22">Kim, Kwan-Woo</searchLink><relatesTo>1,3</relatesTo> (AUTHOR)<i> kkw1988@kcarbon.or.kr</i><br /><searchLink fieldCode="AR" term="%22Kim%2C+Byung-Joo%22">Kim, Byung-Joo</searchLink><relatesTo>1,3</relatesTo> (AUTHOR) – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Materials+%281996-1944%29%22">Materials (1996-1944)</searchLink>. Feb2026, Vol. 19 Issue 4, p702. 16p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Thermal+stability%22">Thermal stability</searchLink><br /><searchLink fieldCode="DE" term="%22Colloidal+stability%22">Colloidal stability</searchLink><br /><searchLink fieldCode="DE" term="%22Carbon+fibers%22">Carbon fibers</searchLink><br /><searchLink fieldCode="DE" term="%22Stabilizing+agents%22">Stabilizing agents</searchLink><br /><searchLink fieldCode="DE" term="%22PAN-based+carbon+fibers%22">PAN-based carbon fibers</searchLink><br /><searchLink fieldCode="DE" term="%22Microemulsions%22">Microemulsions</searchLink><br /><searchLink fieldCode="DE" term="%22Particle+size+distribution%22">Particle size distribution</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: Highlights: What are the main findings? Fine-denier silicone emulsions were prepared using disperser and colloid mill methods. Colloid mill emulsification produced smaller and more stable droplet sizes. Thermal aging at 50–70 °C mainly affected dispersion stability, not chemical structure. What are the implications of the main findings? Emulsification method strongly governs thermal stability of silicone emulsions. Stable dispersion at 3–5% concentration is suitable for PAN fiber processing. Colloid mill processing improves process stability in carbon fiber manufacturing. Fine-denier silicone emulsions play an important role in the polyacrylonitrile (PAN) precursor treatment process by reducing surface tension and preventing fiber fusion during thermal stabilization and carbonization. These emulsions are typically prepared by dispersing polydimethylsiloxane (PDMS) polymers with various functional groups into water through different emulsification methods. In this study, two types of silicone emulsions—one prepared using a mechanical disperser and the other using a high-shear colloid mill—were manufactured on a pilot scale and systematically compared. Thermal aging was conducted at 50 °C and 70 °C for approximately one month, and changes in particle size, dispersion stability, and physicochemical properties were evaluated. The colloid-mill emulsification method produced smaller and more uniform silicone particles and exhibited superior thermal and dispersion stability relative to the mechanically dispersed emulsion. NMR relaxation, Turbiscan multiple light scattering, and viscosity measurements confirmed that the colloid-mill emulsion maintained a stable microstructure with minimal aggregation even under elevated-temperature storage. These results demonstrate that high-shear emulsification is an effective approach for producing fine-denier silicone emulsions with enhanced stability, making the colloid-mill method a more reliable and practical route for preparing silicone-based oiling agents used during PAN precursor processing in carbon fiber manufacturing. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Materials (1996-1944) is the property of MDPI and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
| PLink | https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=egs&AN=191972843 |
| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.3390/ma19040702 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 16 StartPage: 702 Subjects: – SubjectFull: Thermal stability Type: general – SubjectFull: Colloidal stability Type: general – SubjectFull: Carbon fibers Type: general – SubjectFull: Stabilizing agents Type: general – SubjectFull: PAN-based carbon fibers Type: general – SubjectFull: Microemulsions Type: general – SubjectFull: Particle size distribution Type: general Titles: – TitleFull: Effect of Accelerated Thermal Aging on the Dispersion Stability of Fine-Denier Silicone Emulsions for Carbon Fiber Precursor Processing. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Yang, Jae-Yeon – PersonEntity: Name: NameFull: Chung, Dong-Chul – PersonEntity: Name: NameFull: Kim, Kwan-Woo – PersonEntity: Name: NameFull: Kim, Byung-Joo IsPartOfRelationships: – BibEntity: Dates: – D: 15 M: 02 Text: Feb2026 Type: published Y: 2026 Identifiers: – Type: issn-print Value: 19961944 Numbering: – Type: volume Value: 19 – Type: issue Value: 4 Titles: – TitleFull: Materials (1996-1944) Type: main |
| ResultId | 1 |
