Preparation of needled nonwoven enhanced silica aerogel for thermal insulation
Benefiting from the advantages of light weight, porosity, high specific surface area and ultra-low thermal conductivity, silica aerogel (SiAG) has been regarded as ideal thermal insulation material. However, the low strength and fragility limited its application. In this paper, the needled nonwoven...
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| Format: | Article |
| Language: | English |
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Elsevier
2023-05-01
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| Series: | Case Studies in Thermal Engineering |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214157X23003313 |
| _version_ | 1797832707104833536 |
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| author | Jiali Hu Ying Qian Tongjuan Liu Tingxuan Wu Guangyu Zhang Wei Zhang |
| author_facet | Jiali Hu Ying Qian Tongjuan Liu Tingxuan Wu Guangyu Zhang Wei Zhang |
| author_sort | Jiali Hu |
| collection | DOAJ |
| description | Benefiting from the advantages of light weight, porosity, high specific surface area and ultra-low thermal conductivity, silica aerogel (SiAG) has been regarded as ideal thermal insulation material. However, the low strength and fragility limited its application. In this paper, the needled nonwoven (NNW) composed of polyphenylene sulfide fibers and pre-oxidized fibers was applied as substrate for incorporating with silica aerogel (SiAG/NNW) to coordinate the heat preservation. Various characterizations were carried out to discuss thermal insulation property. The results showed that SiAG/NNW can last for 4min under butane flame with a certain impact force at about 1300 °C. According to TG analysis, the weight loss of the SiAG/NNW is 5% at 464 °C, which is much higher than individual NNW (327 °C) or SiAG (456 °C). Moreover, the carbon residue rate of the nonwoven was raised from 54.3% to 73.7% at 800 °C after SiAG incorporation. The fiber morphology can still be observed at the flame perforation of SiAG/NNW with low carbonization degree and no obvious decomposition to SiAG. Significantly, thermal protective performance (TPP) values of the SiAG/NNW can reach 1272 kW s/m2 which is twice of the NNW. In conclusion, the prepared SiAG/NNW showed high temperature resistance and excellent thermal insulation, the results also provides a technical scheme for future development of thermal insulation materials at high temperature. |
| first_indexed | 2024-04-09T14:12:09Z |
| format | Article |
| id | doaj.art-9244927d37c94d288951ae9e21e18a0b |
| institution | Directory Open Access Journal |
| issn | 2214-157X |
| language | English |
| last_indexed | 2024-04-09T14:12:09Z |
| publishDate | 2023-05-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Case Studies in Thermal Engineering |
| spelling | doaj.art-9244927d37c94d288951ae9e21e18a0b2023-05-06T04:38:17ZengElsevierCase Studies in Thermal Engineering2214-157X2023-05-0145103025Preparation of needled nonwoven enhanced silica aerogel for thermal insulationJiali Hu0Ying Qian1Tongjuan Liu2Tingxuan Wu3Guangyu Zhang4Wei Zhang5School of Textile and Clothing, National & Local Joint Engineering Research Center of Technical Fiber Composites for Safety and Protection, Nantong University, Nantong, 226019, PR ChinaSchool of Textile and Clothing, National & Local Joint Engineering Research Center of Technical Fiber Composites for Safety and Protection, Nantong University, Nantong, 226019, PR ChinaToray Fibers & Textiles Research Laboratories (China) Co. Ltd (TFRC), 226000, PR ChinaToray Fibers & Textiles Research Laboratories (China) Co. Ltd (TFRC), 226000, PR ChinaSchool of Textile and Clothing, National & Local Joint Engineering Research Center of Technical Fiber Composites for Safety and Protection, Nantong University, Nantong, 226019, PR China; Corresponding author.School of Textile and Clothing, National & Local Joint Engineering Research Center of Technical Fiber Composites for Safety and Protection, Nantong University, Nantong, 226019, PR China; Corresponding author.Benefiting from the advantages of light weight, porosity, high specific surface area and ultra-low thermal conductivity, silica aerogel (SiAG) has been regarded as ideal thermal insulation material. However, the low strength and fragility limited its application. In this paper, the needled nonwoven (NNW) composed of polyphenylene sulfide fibers and pre-oxidized fibers was applied as substrate for incorporating with silica aerogel (SiAG/NNW) to coordinate the heat preservation. Various characterizations were carried out to discuss thermal insulation property. The results showed that SiAG/NNW can last for 4min under butane flame with a certain impact force at about 1300 °C. According to TG analysis, the weight loss of the SiAG/NNW is 5% at 464 °C, which is much higher than individual NNW (327 °C) or SiAG (456 °C). Moreover, the carbon residue rate of the nonwoven was raised from 54.3% to 73.7% at 800 °C after SiAG incorporation. The fiber morphology can still be observed at the flame perforation of SiAG/NNW with low carbonization degree and no obvious decomposition to SiAG. Significantly, thermal protective performance (TPP) values of the SiAG/NNW can reach 1272 kW s/m2 which is twice of the NNW. In conclusion, the prepared SiAG/NNW showed high temperature resistance and excellent thermal insulation, the results also provides a technical scheme for future development of thermal insulation materials at high temperature.http://www.sciencedirect.com/science/article/pii/S2214157X23003313Silica aerogelCompound needled nonwovenThermal insulationThermal propertiesNeedle nonwoven |
| spellingShingle | Jiali Hu Ying Qian Tongjuan Liu Tingxuan Wu Guangyu Zhang Wei Zhang Preparation of needled nonwoven enhanced silica aerogel for thermal insulation Case Studies in Thermal Engineering Silica aerogel Compound needled nonwoven Thermal insulation Thermal properties Needle nonwoven |
| title | Preparation of needled nonwoven enhanced silica aerogel for thermal insulation |
| title_full | Preparation of needled nonwoven enhanced silica aerogel for thermal insulation |
| title_fullStr | Preparation of needled nonwoven enhanced silica aerogel for thermal insulation |
| title_full_unstemmed | Preparation of needled nonwoven enhanced silica aerogel for thermal insulation |
| title_short | Preparation of needled nonwoven enhanced silica aerogel for thermal insulation |
| title_sort | preparation of needled nonwoven enhanced silica aerogel for thermal insulation |
| topic | Silica aerogel Compound needled nonwoven Thermal insulation Thermal properties Needle nonwoven |
| url | http://www.sciencedirect.com/science/article/pii/S2214157X23003313 |
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