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High-performance porous carbon foams via catalytic pyrolysis of modified isocyanate-based polyimide foams for electromagnetic shielding

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Nano Research 2022年第8期15卷 6851-6859页

作者： Zhouping Sun Bin Shen Yang Li Jiali Chen Wenge Zheng Ningbo Key Lab of Polymer Materials Ningbo Institute of Materials Technology and EngineeringChinese Academy of SciencesNingbo 315201China University of Chinese Academy of Sciences Beijing 100049China College of Chemistry and Pharmaceutical Engineering Huanghuai UniversityZhumadian 463000China

Porous carbon skeletons(PCSs)derived from isocyanate-based aromatic polyimide foams(PIFs)by high-temperature pyrolysis are very promising in the fabrication of high-performance polymer composite foams for electromagnetic interference(EMI)shielding due to their efficient conductive networks and facile preparation ***,severe volumetric shrinkage and low graphitization degree is not conducive to enhancing the shielding efficiency of the ***,ferric acetylacetonate and carbon-nanotube coating have been introduced in isocyanate-based PIFs to greatly suppress the serious shrinkage during pyrolysis and improve the graphitization degree of the final carbon foams through the Fe-catalytic graphitization process,thereby endowing them with better EMI-shielding performance even at lower pyrolysis temperature compared to the control ***,compressible polydimethylsiloxane(PDMS)composite foams with the as-prepared carbon foams as prefabricated PCSs have also been fabricated,which could provide not only stable shielding effectiveness(SE)performance even after a thousand compressions,but also multiple functions of Joule heating,thermal insulation and infrared *** study offers a feasible route to prepare high-performance PCSs in a more energy-efficient manner via PIF pyrolysis,which is very promising in the manufacture of multifunctional conductive polymer composite foams.

关键词： porous carbon skeletons isocyanate-based polyimide foams catalytic graphitization electromagnetic interference shielding multiple functions

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Multifuntionally novel anti-neurodegerative dimers:from relieving symptoms to modifying diseases

Multifuntionally novel anti-neurodegerative dimers:from reli...

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首届东方药理论坛暨2018年全国心脑血管药理学术会议、上海市药理学会第十九届学术年会

作者： Yifan HAN Cui Wei Shengquan HU Marvin MAK State Key Laboratory of Chinese Medicine and Molecular Pharmacology(Incubation) The Hong Kong Polytechnic University Shenzhen Research Institute Department ofApplied Biology and Chemical Technology Institute of Modern Chinese MedicineThe Hong Kong Polytechnic University School of medicine Ningbo University

Neurodegenative disorders(ND),including Alzheimer's disease,Vascular Dementia and Parkinson's disease have now become the most common brain disorders among the older *** there are many similarities among ND from molecular to systemic,such as late-onset,atypical protein assemblies,and induced cell death,the precise pathogenesis remains largely *** a result,the currently existing therapeutics only offer temporary symptomatic ***,further research and development of more efficacious and disease-modifying agents for the prevention,treatment and restoration of ND will have tremendous value from both scientific,and economic *** the past few years,our series of studies have identified several highly promising anti-neurodegerative dimeric leads,with disease-modifying *** this presentation,the latest progress on the multifunctionally neuroprotective and disease modifying effects and the underlying mechanisms of those candidates will be comprehensively illustrated and discussed.

关键词： Neuroprotective effect Alzheimer's disease Disease modifying multiple functions

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职业教育“类型教育”生态系统的结构及功能探究

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职业技术教育 2021年第7期

作者：徐晔

随着技术升级转型，对技术技能型人才需求发生巨变，推动职业教育结构性变革，职业教育进入由层次教育向类型教育转型发展的全新阶段。以结构功能理论为依托，在探究职业教育“类型教育”生态系统内外结构基础上，以培养完整职业人为价... 详细信息

随着技术升级转型，对技术技能型人才需求发生巨变，推动职业教育结构性变革，职业教育进入由层次教育向类型教育转型发展的全新阶段。以结构功能理论为依托，在探究职业教育“类型教育”生态系统内外结构基础上，以培养完整职业人为价值追求，明确职业教育“类型教育”生态系统功能定位于面向人人，功能过程为产教融合，功能结果为民生功能，最终实现职业教育“类型教育”生态系统与教育系统、社会系统的动态平衡。

关键词：职业教育类型教育生态系统内部结构外部结构功能 Vocational Education New-type Education Ecosystem Internal Structure External Structure multiple functions

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