Article(id=1319232606164598893, tenantId=1146029695717560320, journalId=1263187385517883426, issueId=1319232566922695375, articleNumber=null, orderNo=null, doi=10.14062/j.issn.0454-5648.20210830, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1632240000000, receivedDateStr=2021-09-22, revisedDate=1632585600000, revisedDateStr=2021-09-26, acceptedDate=null, acceptedDateStr=null, onlineDate=1792459163466, onlineDateStr=2026-10-20, pubDate=1658246400000, pubDateStr=2022-07-20, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1792459163466, onlineIssueDateStr=2026-10-20, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1792459163466, creator=13701087609, updateTime=1792459163466, updator=13701087609, issue=Issue{id=1319232566922695375, tenantId=1146029695717560320, journalId=1263187385517883426, year='2022', volume='50', issue='7', pageStart='1775', pageEnd='2066', issueExtLink='null', onlineDate='null', pubDate='1658246400000', pubDateStr='2022-07-20', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1792459154109, creator='13701087609', updateTime=1792460038980, updator='13701087609', preIssue=null, nextIssue=null, articleTotal=null, ext={EN=IssueExt(id=1319236278420357264, tenantId=1146029695717560320, journalId=1263187385517883426, issueId=1319232566922695375, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1319236278420357265, tenantId=1146029695717560320, journalId=1263187385517883426, issueId=1319232566922695375, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null, downloadFileDto=null}, startPage=2005, endPage=2014, ext={EN=ArticleExt(id=1319232606357536878, articleId=1319232606164598893, tenantId=1146029695717560320, journalId=1263187385517883426, language=EN, title=Effect of Heat-Treatment Temperature on Properties of SiO_2f/SiO₂ Composites, columnId=1263922769897599102, journalTitle=Journal of the Chinese Ceramic Society, columnName=Research Articles, runingTitle=null, highlight=null, articleAbstract=

It is of great practical significance to develop thermal insulation materials with integrated load bearing and thermal insulation for energy saving and emission reduction in high-temperature engineering. In this work, SiO_2f/SiO₂ composites were prepared by a precursor impregnation heat-treatment method with quartz fiber needled felt as a reinforcement and silica sol as a precursor. The effect of heat-treatment temperature on the density, porosity, mechanical properties and thermal properties of SiO_2f/SiO₂ composites was investigated. The composition and microstructure of the composites were characterized by X-ray diffraction and scanning electron microscopy. The coefficient of thermal expansion and thermal conductivity of composites were measured by a push rod method and a transient hot-wire method. The results indicate that the apparent porosity and mechanical strength firstly increase and then decrease with the increase of heat-treatment temperature. The sample after heat-treatment at 450 ℃ has the optimum overall performance (i.e., the flexural strength of 23.5 MPa, and the compressive strength of 61.9 MPa). The fracture mechanism is a ductile fracture. At 300-700 ℃, the thermal expansion coefficient of the sample is 0.564×10^-6/℃. The thermal conductivity of the samples decreases with the increase of temperature, and it is as low as 0.096 W/m·K at 700℃. The SiO_2f/SiO₂ composite prepared has some advantages in the integrated application of load bearing and thermal insulation, and meets the harsh requirements of hot pressing and sintering, non-ferrous metallurgy and other industries.

, authors=Donghai DING¹, Runan LI¹, Li ZHANG², Kai PENG², Guoqing XIAO¹, Feng DUAN¹, Peilin DENG¹, Jie Li¹, authorsList=Donghai DING, Runan LI, Li ZHANG, Kai PENG, Guoqing XIAO, Feng DUAN, Peilin DENG, Jie Li, authorCompany=null, correspAuthors=null, authorNote=, correspAuthorsNote=null, copyrightStatement=null, copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=null, magXml=null, pdfUrl=null, pdf=null, pdfFileSize=null, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=null, mapNumber=null, fund=null), CN=ArticleExt(id=1319232606672109679, articleId=1319232606164598893, tenantId=1146029695717560320, journalId=1263187385517883426, language=CN, title=热处理温度对SiO_2f/SiO₂复合材料性能的影响, columnId=1263922770220560512, journalTitle=硅酸盐学报, columnName=研究论文, runingTitle=null, highlight=null, articleAbstract=

开发承载隔热一体化的隔热材料对高温工业节能减排具有重要的现实意义。以石英纤维针刺毡为增强体，硅溶胶为先驱体，采用先驱体浸渍热处理法制备了石英纤维增强二氧化硅基（SiO_2f/SiO₂）复合材料。研究了热处理温度（400~900 ℃）对SiO_2f/SiO₂复合材料的密度、气孔率、力学性能及热学性能的影响。采用X射线衍射和扫描电子显微镜表征复合材料的组成及微观形貌；采用顶杆法和瞬态热线法测定复合材料的热膨胀系数和热导率。结果表明：随着热处理温度的提高，试样的密度变化不大，显气孔率和力学强度整体呈先升高再降低的趋势。450 ℃热处理后的试样综合性能最佳，试样的三点弯曲强度为23.5 MPa，抗压强度为61.9 MPa，表现出明显的韧性断裂行为。在300~700 ℃之间，试样的热膨胀系数为0.564×10^-6/℃，热导率随温度升高而降低，在700 ℃时低至0.096 W/（m·K）。SiO_2f/SiO₂复合材料在承载隔热一体化应用方面有明显优势，有望满足热压烧结、有色冶金等行业的苛刻要求。

, authors=丁冬海¹, 李汝楠¹, 张立², 彭凯², 肖国庆¹, 段锋¹, 邓沛琳¹, 李杰¹, authorsList=丁冬海, 李汝楠, 张立, 彭凯, 肖国庆, 段锋, 邓沛琳, 李杰, authorCompany=null, correspAuthors=null, authorNote=, correspAuthorsNote=null, copyrightStatement=null, copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=LPlgIVGzII3i4SLldrV/Jw==, magXml=HpXiYNTCI4HFbYclZlithQ==, pdfUrl=null, pdf=lTj2DERZYm+YtciyMAsPPw==, pdfFileSize=5996655, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=zsoW7VXwKkVBZPHxsv178A==, mapNumber=null, fund=null)}, authors=[Author(id=1322507094692057758, tenantId=1146029695717560320, journalId=1263187385517883426, articleId=1319232606164598893, orderNo=0, firstName=null, middleName=null, lastName=null, nameCn=null, orcid=null, stid=null, country=null, authorPic=null, dead=0, email=dingdongxauat@163.com, emailSecond=null, emailThird=null, correspondingAuthor=0, authorType=1, ext={EN=AuthorExt(id=1322507094780138144, tenantId=1146029695717560320, journalId=1263187385517883426, articleId=1319232606164598893, authorId=1322507094692057758, language=EN, stringName=Donghai DING, firstName=Donghai, middleName=null, lastName=DING, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=¹, address=^1.College of Materials Science and Engineering, Xi'an University of Architecture and Technology, Xi'an, 710055, China, bio={"content":"

DING Donghai (1983-), Male, Ph.D., Associate Professor. E-mail: dingdongxauat@163.com

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DING Donghai (1983-), Male, Ph.D., Associate Professor. E-mail: dingdongxauat@163.com

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丁冬海（1983—），男，博士，副教授。

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丁冬海（1983—），男，博士，副教授。

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