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Recent progress on thermal conductivity of graphene filled epoxy composites

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Nano Materials Science 2022年第3期4卷 205-219页

作者： Ruicong Lv Yanjuan Ren haichang guo Shulin Bai School of Materials Science and Engineering HEDPS/Center for Applied Physics and TechnologyKey Laboratory of Polymer Chemistry and Physics of Ministry of EducationPeking UniversityBeijing100871China

With the rapid development of the electronic industry, the requirements for packaging materials with high thermal conductivity(TC) are getting higher and higher. Epoxy is widely used as package material for electronic package applications. But it’s intrinsic TC can’t meets the increasing demands. Adding high TC graphene into epoxy matrix is a proper way to reinforce epoxy composites. This review focuses on the filler modification,preparation process and thermal properties of graphene-filled epoxy resin composites. Different ways of covalent and non-covalent modification methods are discussed. The various kinds of graphene coating layer are also summarized. Then we analysis the hybrid filler system in epoxy composite. We hope this review will provide guidance for the development and application of graphene-filled epoxy resin composites.

关键词： Graphene Epoxy Composites Thermal conductivity

Vertical Alignment of Anisotropic Fillers Assisted by Expansion Flow in Polymer Composites

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Nano-Micro Letters 2022年第9期14卷 257-271页

作者： Hongyu Niu haichang guo Lei Kang Liucheng Ren Ruicong Lv Shulin Bai School of Materials Science and Engineering HEDPS/Center for Applied Physics and TechnologyKey Laboratory of Polymer Chemistry and Physics of Ministry of EducationPeking UniversityBeijing 100871People’s Republic of China Peking University Nanchang Innovation Institute 14#1‑2 FloorHigh‑level Talent Industrial ParkHigh‑Tech DistrictNanchang City 330224Jiangxi ProvincePeople’s Republic of China

Orientation control of anisotropic one-dimensional(1D)and two-dimensional(2D)materials in solutions is of great importance in many fields ranging from structural materials design,the thermal management,to energy *** fine control of vertical alignment of anisotropic fillers(such as graphene,boron nitride(BN),and carbon fiber)remains *** work presents a universal and scalable method for constructing vertically aligned structures of anisotropic fillers in composites assisted by the expansion flow(using2D BN platelets as a proof-of-concept).BN platelets in the silicone gel strip are oriented in a curved shape that includes vertical alignment in the central area and horizontal alignment close to strip *** to the vertical orientation of BN in the central area of strips,a throughplane thermal conductivity as high as 5.65 W m^(-1) K^(-1) was obtained,which can be further improved to 6.54 W m^(-1) K^(-1) by combining BN and pitch-based carbon *** expansion-flow-assisted alignment can be extended to the manufacture of a variety of polymer composites filled with 1D and 2D materials,which can find wide applications in batteries,electronics,and energy storage devices.

关键词： Boron nitride(BN) Silicone Expansion flow Vertical alignment Through-plane thermal conductivity

Gold-catalyzed Intermolecular Oxidation of Phenylacetylene and Allylic Sulfides： an Efficient and Practical Synthesis of α-Phenylthio Ketone

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Chemical Research in Chinese Universities 2018年第1期34卷 57-60页

作者： ZHENG Renhua HUANG Qing guo haichang HUANG Yidie JIANG Huajiang School of Pharmaceutical and Chemical Engineering Taizhou University Taizhou 318000 P. R. China College of Pharmaceutical Science Zhejiang University of Technology Hangzhou 310014 P. R. China

An efficient and practical synthesis of α-phenylthio ketone through gold-catalyzed intennolecular oxidation of phenylacetylene and substituted aryl（benzyl） allylic sulfides was developed. The reaction scope is fairly good with substituted aryl（beazyl） allylic sulfides, tolerating various functional groups, and the reaction affords the yields of 63%-85%.

关键词： Gold-catalyst α-Phenylthio ketone Oxidation Phenylacetylene

Enhancing through-plane thermal conductivity of fluoropolymer composite by developing in situ nano-urethane linkage at graphene–graphene interface

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Nano Research 2020年第10期13卷 2741-2748页

作者： Muhammad Maqbool haichang guo Akbar Bashir Ali Usman Adeel YAbid Guansong He Yanjuan Ren Zeeshan Ali Shulin Bai Department of Materials Science and Engineering Key Laboratory of High Eenergy Density Physics Simulation(HEDPS)Center of Applied Physics and Technology(CAPT)/Laboratory of Turbulence and Complex System(LTCS)Key Laboratory of Polymer Chemistry and Physics of Ministry of EducationCollege of EngineeringPeking UniversityBejing 100871China Institute of Chemical Materials Chinese Academy of Engineering Physics(CA EP)Mianyang 621900China School of Chemical and Materials Engineering(SCME) National University of Sciences and Technology(NUST)Islamabad 4000Pakistan

Attributed to the intense development and complexity in electronic devices,energy dissipation is becoming more essential *** carbonaceous materials particularly graphene(Gr)-based thermal interface materials(TIMs)are exceptional in heat ***,because of the anisotropic behavior of Gr in composites,the TIMs having outstanding through-plane thermal conductivity(┴TC)are needed to fulfill the upcoming innovation in numerous *** order to achieve this,herein,nano-urethane linkage-based modified Gr and carbon fibers architecture termed as nanourethane linkage(NUL)-Gr/carbon fibers(CFs)is ***,toluene diisocyanate is utilized to develop a novel but simple NUL to shape a new interface between graphene ***,the prepared composite of NUL-Gr/CFs with polyvinylidene fluoride matrix shows outstanding performance in heat *** to the unique structure of NUL-Gr/CFs,an unprecedented value of┴TC(~7.96 W·m^–1·K^–1)is achieved at a low filler fraction of 13.8 wt.%which translates into an improvement of^3,980%of pristine *** achieved outcomes elucidate the significance of the covalent interaction between graphene sheets as well as strong bonding among graphene and matrix in the composites and manifest the potential of proposed NUL-Gr/CFs architecture for practical applications.

关键词： graphene thermal interface materials polymer composites

邻菲罗啉聚西佛碱金属配合物的合成及磁性能研究(英文)

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高分子学报 2011年第5期21卷 435-440页

作者：郑人华蒋华江郭海昌孙维林台州学院医药化工学院临海317000 浙江大学高分子系高分子科学研究所杭州310027

以5,6-二胺-1,10-菲罗啉与2,6-吡啶二甲酸缩聚合成得到一种新的含邻菲罗啉结构的聚西佛碱,并制备了其相应的与过渡金属离子Ni2+和Fe2+以及稀土离子Nd3+的配合物,通过红外光谱,核磁共振和元素分析等手段对聚合物及其金属配合物的结构进... 详细信息

以5,6-二胺-1,10-菲罗啉与2,6-吡啶二甲酸缩聚合成得到一种新的含邻菲罗啉结构的聚西佛碱,并制备了其相应的与过渡金属离子Ni2+和Fe2+以及稀土离子Nd3+的配合物,通过红外光谱,核磁共振和元素分析等手段对聚合物及其金属配合物的结构进行了表征,并分析和讨论了它们的磁学性能.结果表明,这一类金属配合物在低温区,磁化率倒数与温度的关系不服从居里-外斯定律,存在着铁磁耦合,其中聚合物的镍和钕的配合物是软铁磁体,而聚合物的亚铁配合物是反铁磁体.

关键词：合成邻菲罗啉聚西佛碱金属配合物磁性能

通过锌催化区域选择性氧化反应实现3-烯-1-炔的1,4-官能团化

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有机化学 2019年第6期39卷 1672-1680页

作者：郑人华郭海昌阳明洋刘梦琪叶龙武台州学院医药化工与材料工程学院台州318000 厦门大学化学化工学院厦门361005

γ-羟基或烷氧基取代的α,β-不饱和羰基化合物广泛存在于众多天然产物和生物活性分子之中.通过锌催化的区域选择性的氮氧化合物氧化炔烃反应,实现了3-烯-1-炔的4-烷氧化-1-氧化官能团化.该串联反应可以中等到良好的产率得到系列合成上... 详细信息

γ-羟基或烷氧基取代的α,β-不饱和羰基化合物广泛存在于众多天然产物和生物活性分子之中.通过锌催化的区域选择性的氮氧化合物氧化炔烃反应,实现了3-烯-1-炔的4-烷氧化-1-氧化官能团化.该串联反应可以中等到良好的产率得到系列合成上很有用的γ-烷氧基取代的α,β-不饱和酰胺化合物.

关键词：氧化反应 1,4-官能团化炔烃串联反应

Recent progress on thermal conductivity of graphene filled epoxy composites

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碘化亚铜/乙二胺催化氮杂环化合物的N-芳基化反应

Nano Materials Science 2022年第3期

作者： ruicong lv yanjuan ren haichang guo shulin bai

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应用化学 2011年第10期28卷 1179-1183页

作者：胡帅帅郭海昌蒋华江郑人华台州学院医化学院临海317000

以碘化亚铜/乙二胺为催化体系,研究了卤代芳烃和氮杂环化合物的Ullmann反应。结果表明,氮杂环化合物的pKa越小,芳基化反应越容易进行,p-π共轭形成的富电子卤代芳烃有利于反应,非p-π共轭的富电子卤代芳烃使反应变难。

关键词： Ullmann反应 N-芳基化反应氮杂环化合物碘化亚铜/乙二胺催化

无氧条件下铜、镍和铁催化的芳基硫酚自偶联生成二芳基二硫醚

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浙江大学学报（理学版） 2015年第4期42卷 430-435页

作者：张斌张文鸿郭海昌陈仁尔周其忠吴家守蒋华江台州学院化学系浙江台州318000 浙江荣耀化工有限公司浙江台州317000

苯硫酚或苯甲硫醇在CuI/Phen催化下,以Na2CO3为碱,乙二醇二甲醚为溶剂,在氮气保护下,回流搅拌可得二芳基二硫醚,收率为79%-99%;在Ni（PPh3）2Cl2催化下,以K2CO3为碱,得到的二芳基二硫醚的收率为77%-86%;在FeCl3/L-Proline催化下,以K2CO... 详细信息

苯硫酚或苯甲硫醇在CuI/Phen催化下,以Na2CO3为碱,乙二醇二甲醚为溶剂,在氮气保护下,回流搅拌可得二芳基二硫醚,收率为79%-99%;在Ni（PPh3）2Cl2催化下,以K2CO3为碱,得到的二芳基二硫醚的收率为77%-86%;在FeCl3/L-Proline催化下,以K2CO3为碱,甲醇为溶剂时,在氮气保护下,回流搅拌得到二芳基二硫醚,收率为86%-97%.为合成二芳基二硫醚提供了3种有效方法。

关键词：苯硫酚 CuI 镍 FeCl3 二芳基二硫醚