Article(id=1322943502530781833, tenantId=1146029695717560320, journalId=1263187385517883426, issueId=1322942780003201932, articleNumber=null, orderNo=null, doi=10.14062/j.issn.0454-5648.20200973, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1609084800000, receivedDateStr=2020-12-28, revisedDate=1613664000000, revisedDateStr=2021-02-19, acceptedDate=null, acceptedDateStr=null, onlineDate=1793343910105, onlineDateStr=2026-10-30, pubDate=1632067200000, pubDateStr=2021-09-20, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1793343910105, onlineIssueDateStr=2026-10-30, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1793343910105, creator=13701087609, updateTime=1793343910105, updator=13701087609, issue=Issue{id=1322942780003201932, tenantId=1146029695717560320, journalId=1263187385517883426, year='2021', volume='49', issue='9', pageStart='1785', pageEnd='2044', issueExtLink='null', onlineDate='null', pubDate='1632067200000', pubDateStr='2021-09-20', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1793343737841, creator='13701087609', updateTime=1793345873558, updator='13701087609', preIssue=null, nextIssue=null, articleTotal=null, ext={EN=IssueExt(id=1322951737916665918, tenantId=1146029695717560320, journalId=1263187385517883426, issueId=1322942780003201932, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1322951737916665919, tenantId=1146029695717560320, journalId=1263187385517883426, issueId=1322942780003201932, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null, downloadFileDto=null}, startPage=2017, endPage=2024, ext={EN=ArticleExt(id=1322943502782440074, articleId=1322943502530781833, tenantId=1146029695717560320, journalId=1263187385517883426, language=EN, title=Preparation and Thermal Insulation Property of Yolk-shell Structure Hollow Silica Nanospheres, columnId=1319726165087077079, journalTitle=Journal of the Chinese Ceramic Society, columnName=Research Article, runingTitle=null, highlight=null, articleAbstract=

Yolk-shell structure hollow silica nanospheres were prepared with TEOS as a silica precursor and polystyrene sphere as a template by a continuous hard-template wrapping synthesis method and subsequent high temperature calcining. The structure, morphology and properties of the as-synthesized products were characterized by zeta potential analysis, Fourier transform infrared spectroscopy, scanning electron microscopy, transmission electron microscopy, nitrogen adsorption-desorption isotherm and thermal conductivity analysis. The thermal insulation properties of acrylate coating with yolk-shell structure hollow silica nanospheres were investigated. The results show yolk-shell structure hollow silica nanospheres with 20-290 nm layer space have a petal-like morphology. The thermal conductivity is 0.0500-0.0650 W·m-1·K-1, which increases with the increase of inner core particle size. The incorporation of yolk-shell structure hollow silica nanospheres into acrylate coating can effectively reduce the thermal conductivity of the coating, which can be reduced by more than 70% at the incorporation content of 8%. Compared to single shell hollow silica nanospheres, yolk-shell structure hollow silica nanospheres have a decreased thermal conductivity of the coating and a better thermal insulation performance.

, authors=Fangxian LI, Yerong YANG, Jiangxiong WEI, Qijun YU, authorsList=Fangxian LI, Yerong YANG, Jiangxiong WEI, Qijun YU, authorCompany=null, correspAuthors=null, authorNote=

LI Fangxian (1979-), male, Ph.D., Associate Researcher E-mail:

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以正硅酸乙酯为硅源和聚苯乙烯球为牺牲模板,采用连续硬模板包裹法结合后续高温煅烧技术制备了蛋黄-蛋壳型中空纳米SiO2微球。通过表面电位分析、Fourier变换红外光谱、扫描电子显微镜、透射电子显微镜、氮气吸附-脱附、热常数分析等手段对制备得到的中空纳米SiO2微球进行结构、微观形貌和性能表征,将蛋黄-蛋壳型中空纳米SiO2微球应用于丙烯酸酯隔热涂层中考察其绝热性能。研究表明:蛋黄-蛋壳型中空纳米SiO2形貌呈花瓣状,壳层间距在20~290 nm,随着内核尺寸的增大,比表面积逐渐减小;蛋黄-蛋壳型中空纳米SiO2微球的热导率的范围在0.0500~0.0650 W·m-1·K-1之间,随着内核粒径的增加,热导率逐渐增大;中空纳米SiO2可以有效降低涂层的热导率,当掺量为8%时,热导率降低70%以上;相比单壳层中空纳米SiO2,蛋黄-蛋壳结构中空纳米SiO2能更有效降低涂层的热导率,具有更好的绝热性能。

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李方贤(1979—),男,博士,副研究员。

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李方贤(1979—),男,博士,副研究员。

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蛋黄-蛋壳型中空纳米SiO2微球的制备及绝热性能
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李方贤 , 杨椰榕 , 韦江雄 , 余其俊
硅酸盐学报 | 研究论文 2021,49(9): 2017-2024
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硅酸盐学报 |研究论文 2021 , 49 (9) : 2017 -2024
蛋黄-蛋壳型中空纳米SiO2微球的制备及绝热性能
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李方贤 , 杨椰榕, 韦江雄, 余其俊
作者信息
  • 华南理工大学材料科学与工程学院,广州 510640
作者简介:

李方贤(1979—),男,博士,副研究员。

Preparation and Thermal Insulation Property of Yolk-shell Structure Hollow Silica Nanospheres
Fangxian LI , Yerong YANG, Jiangxiong WEI, Qijun YU
Affiliations
  • School of Materials Science and Engineering, South China University of Technology, Guangzhou 510640, China
  • LI Fangxian (1979-), male, Ph.D., Associate Researcher E-mail:

出版时间: 2021-09-20 doi: 10.14062/j.issn.0454-5648.20200973
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以正硅酸乙酯为硅源和聚苯乙烯球为牺牲模板,采用连续硬模板包裹法结合后续高温煅烧技术制备了蛋黄-蛋壳型中空纳米SiO2微球。通过表面电位分析、Fourier变换红外光谱、扫描电子显微镜、透射电子显微镜、氮气吸附-脱附、热常数分析等手段对制备得到的中空纳米SiO2微球进行结构、微观形貌和性能表征,将蛋黄-蛋壳型中空纳米SiO2微球应用于丙烯酸酯隔热涂层中考察其绝热性能。研究表明:蛋黄-蛋壳型中空纳米SiO2形貌呈花瓣状,壳层间距在20~290 nm,随着内核尺寸的增大,比表面积逐渐减小;蛋黄-蛋壳型中空纳米SiO2微球的热导率的范围在0.0500~0.0650 W·m-1·K-1之间,随着内核粒径的增加,热导率逐渐增大;中空纳米SiO2可以有效降低涂层的热导率,当掺量为8%时,热导率降低70%以上;相比单壳层中空纳米SiO2,蛋黄-蛋壳结构中空纳米SiO2能更有效降低涂层的热导率,具有更好的绝热性能。

聚苯乙烯球  /  硬模板  /  纳米二氧化硅微球  /  绝热性能

Yolk-shell structure hollow silica nanospheres were prepared with TEOS as a silica precursor and polystyrene sphere as a template by a continuous hard-template wrapping synthesis method and subsequent high temperature calcining. The structure, morphology and properties of the as-synthesized products were characterized by zeta potential analysis, Fourier transform infrared spectroscopy, scanning electron microscopy, transmission electron microscopy, nitrogen adsorption-desorption isotherm and thermal conductivity analysis. The thermal insulation properties of acrylate coating with yolk-shell structure hollow silica nanospheres were investigated. The results show yolk-shell structure hollow silica nanospheres with 20-290 nm layer space have a petal-like morphology. The thermal conductivity is 0.0500-0.0650 W·m-1·K-1, which increases with the increase of inner core particle size. The incorporation of yolk-shell structure hollow silica nanospheres into acrylate coating can effectively reduce the thermal conductivity of the coating, which can be reduced by more than 70% at the incorporation content of 8%. Compared to single shell hollow silica nanospheres, yolk-shell structure hollow silica nanospheres have a decreased thermal conductivity of the coating and a better thermal insulation performance.

polystyrene sphere  /  hard-template  /  hollow silica nanospheres  /  thermal insulation properties
李方贤, 杨椰榕, 韦江雄, 余其俊. 蛋黄-蛋壳型中空纳米SiO2微球的制备及绝热性能. 硅酸盐学报, 2021 , 49 (9) : 2017 -2024 . DOI: 10.14062/j.issn.0454-5648.20200973
Fangxian LI, Yerong YANG, Jiangxiong WEI, Qijun YU. Preparation and Thermal Insulation Property of Yolk-shell Structure Hollow Silica Nanospheres[J]. Journal of the Chinese Ceramic Society, 2021 , 49 (9) : 2017 -2024 . DOI: 10.14062/j.issn.0454-5648.20200973
  • 国家重点研发计划(2018YFD1101004-02)
  • 广东省自然科学基金(2017A030313281)
  • 国家自然科学基金(51972115)
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2021年第49卷第9期
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doi: 10.14062/j.issn.0454-5648.20200973
  • 接收时间:2020-12-28
  • 首发时间:2026-10-30
  • 出版时间:2021-09-20
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  • 收稿日期:2020-12-28
  • 修回日期:2021-02-19
基金
国家重点研发计划(2018YFD1101004-02)
广东省自然科学基金(2017A030313281)
国家自然科学基金(51972115)
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    华南理工大学材料科学与工程学院,广州 510640
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https://castjournals.cast.org.cn/joweb/gsyxb/CN/10.14062/j.issn.0454-5648.20200973
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2种不同金属材料的力学参数
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属数
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genus
种数
Number of
species
占总种数比例
Percentage of
total species (%)
属
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种数
Number of
species
占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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