Show simple item record

dc.contributor.author朱首骥
dc.contributor.author邓顺柳
dc.contributor.author谢素原
dc.date.accessioned2018-11-26T07:26:55Z
dc.date.available2018-11-26T07:26:55Z
dc.date.issued2017
dc.identifier.citation厦门大学学报. 自然科学版,2017,(4):474-480
dc.identifier.issn0438-0479
dc.identifier.other10.6043/j.issn.0438-0479.201702027
dc.identifier.urihttps://dspace.xmu.edu.cn/handle/2288/162887
dc.description.abstract以蒙脱土/氧化石墨烯(MMT/GO)为二元填料,采用一步溶液共混法,并经水合肼还原,制备得到蒙脱土/还原石墨烯/聚乙烯醇(MMT/rGO/PVA; )复合薄膜,研究了GO的氧化程度、MMT/GO二元填料的组成及质量分数对复合薄膜导热性能的影响.结果表明:低温浴条件下制备得到的GO具有更完整的; ${\rm{s}}{{\rm{p}}^2}$杂化碳晶格,有利于rGO导热性能的发挥;MMT片层能有效阻止GO在还原过程中团聚,使rGO在复合薄膜; 中形成有序排列结构,有利于复合薄膜导热性能的提升;同时,由于MMT/GO二元填料能与PVA基体之间形成氢键,大大改善了填料和聚合物之间的界面结合; 力,降低了界面热阻,进一步提高了复合薄膜的导热性能.当MMT与GO的质量比为2∶1,复合薄膜中MMT/GO二元填料的质量分数为12%时,MMT/; rGO/PVA复合薄膜的热导率达到66.4W/(m·K),比纯PVA$\left({ < 0.5{\rm{W}}/\left({{\rm{m}}; \cdot {\rm{K}}} \right)} \right)$至少提高了132倍.
dc.description.abstractIn this paper,graphene oxide(GO)and exfoliated; montmorillonite(MMT)hybrid(MMT/GO)were used as a dual filler to prepare; MMT/graphene/poly(vinyl alcohol)(MMT/rGO/PVA)nanocomposites via solution; blending.Our results show that GO prepared at -40℃exhibits less; defects,suggesting higher thermal conductivity when filled with polymer; composites.The presence of exfoliated MMT sheets greatly prevents the; aggregation of graphene sheets because of the hydrogen-bond interaction; and crosslinking effects(sodium ions serve as"crosslinkers")between GO; and MMT sheets.Meanwhile,the hydrogen bonds between the PVA matrix and; the MMT/GO dual filler improve their dispersion and their interfacial; interaction,resulting in the significant decrease in interfacial thermal; resistance.The effects of the ratio of MMT to GO and the filling; percentage of the dual filler on the thermal conductivity of MMT/rGO/PVA; nanocomposites were investigated.The thermal conductivity of MMT/rGO/PVA; nanocomposites with 12%filling of MMT/GO(2∶1,by mass)dual filler is 66.4; W/(m·K),which is 132times greater than that of pure PVA film.
dc.description.sponsorship国家自然科学基金
dc.language.isozh_CN
dc.subject石墨烯
dc.subject聚乙烯醇
dc.subject蒙脱土
dc.subject复合薄膜
dc.subject导热性能
dc.subjectgraphene
dc.subjectpoly(vinyl alcohol)(PVA)
dc.subjectmontmorillonite(MMT)
dc.subjectcomposite
dc.subjectfilms
dc.subjectthermal conductivity
dc.title蒙脱土/还原石墨烯/聚乙烯醇复合薄膜的制备及其导热性能
dc.title.alternativeSynthesis and Thermal Conductivity of Montmorillonite/Graphene/ Poly(vinyl alcohol)Composite Films
dc.typeArticle


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record