石墨烯气凝胶介绍(英文)
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气凝胶(Aerogel)绝缘材料Cryogel®Z绝缘材料带有一体化蒸汽屏蔽层的柔韧性工业绝缘材料,可以在低于环境温度的条件下以及低温环境下应用Cryogel®Z是一种带有一体化蒸汽屏蔽层的柔韧性气凝胶衬垫绝缘材料。
其设计理念是力求在材料的重量和厚度上达到最小,并且实现水蒸气零渗透的目标,从而提供最大限度的热防护。
Cryogel®Z绝缘材料独特的属性——极低的热导性、超强的柔韧性、耐压力、疏水性,并且应用简单——使得它在低温应用所需的热防护方面成为了最佳的选择。
Cryogel®Z绝缘材料使用已获得专利的纳米技术,将硅气凝胶与增强纤维相结合,产品操作简易,安全环保,其热力性能行业领先。
Cryogel®Z绝缘材料极低的热传导性特点,极大的降低了热增益和液体的蒸发损耗,其衬垫形式使得产品应用所需的劳动力降至最低,其内在的柔韧性特点使得产品更加持久耐用,抗机械损伤的性能也大幅提高。
物理属性优点:超强的热力性能热力性能是其他绝缘产品的五倍厚度与剖面尺寸进一步降低厚度降低但是热阻性相等施用时所耗费的时间和人力更少便于切削,适用于任何复杂的形状、密封曲度以及受限空间带有一体化蒸汽屏蔽层,因此实现了零渗透在一个易于安装的安装包中提供了更多的防潮保护物理特性良好柔软灵活而又具有卓越的回弹性,Cryogel Z绝缘材料甚至是在承受高达850psi的压力后依然可以恢复其热力性能运费以及存储费用低材料体积减小,高存储密度以及低报废率,这些特点都降低了产品的后勤成本,与刚性、预成形的绝缘材料相比,其后勤成本可以降低5倍或更多消除收缩缝因为即使在低温条件下,Cryogel Z绝缘材料依然可以保持弹性,所以,Cryogel Z绝缘材料不需要其他绝缘材料所需的用来防止压缩毁坏现象发生的收缩缝。
®安全环保填埋处理、无弹丸,不含可呼吸纤维热传导性使用ASTM C177标准测定的结防止表面冷凝方面的厚度要求设计条件:环境温度=80°F(26.7°C),相对湿度=70%,露点温度=69.3°F(20.7°C),风速=0,表面发射系数=0.9。
石墨烯气凝胶保温材料英文回答:Graphene aerogel is a highly efficient and lightweight insulating material that has gained significant attentionin recent years. As a three-dimensional network of graphene sheets, it possesses remarkable properties such as low density, high porosity, and excellent thermal conductivity. These unique characteristics make it an ideal candidate for various applications in the field of thermal insulation.One of the key advantages of graphene aerogel as a thermal insulation material is its exceptional thermal conductivity. Due to its highly porous structure, it can effectively trap and slow down the transfer of heat. This property enables it to provide excellent insulation and reduce heat loss. For example, when used as insulation in buildings, graphene aerogel can significantly improve energy efficiency by reducing the need for heating and cooling.Furthermore, graphene aerogel is also highly flexible and compressible, making it suitable for use in various forms and shapes. It can be easily molded into different structures, such as sheets, films, or even coatings, to fit specific applications. This versatility allows for its integration into existing insulation systems without major modifications.In addition to its thermal insulation properties, graphene aerogel also exhibits excellent mechanicalstrength and stability. It can withstand high temperatures and maintain its structural integrity, even under extreme conditions. This durability makes it a reliable and long-lasting insulation material.Moreover, graphene aerogel is environmentally friendly and sustainable. It is derived from graphene, which is a carbon-based material, and can be produced from renewable sources. Unlike traditional insulation materials, it does not release harmful gases or chemicals into the environment. This aspect aligns with the growing demand for eco-friendlysolutions in various industries.中文回答:石墨烯气凝胶是一种高效轻便的保温材料,在近年来引起了广泛的关注。
聚二甲基硅氧烷石墨烯气凝胶
摘要:
1.聚二甲基硅氧烷(PDMS)简介
2.石墨烯气凝胶简介
3.聚二甲基硅氧烷与石墨烯气凝胶的复合材料优势
4.应用领域及前景展望
正文:
聚二甲基硅氧烷(PDMS)是一种常见的硅橡胶材料,具有优异的生物相容性、低摩擦系数和良好的化学稳定性。
石墨烯气凝胶则是一种具有高比表面积、高导电性和优异力学性能的纳米材料。
将这两种材料结合起来,制备聚二甲基硅氧烷/石墨烯气凝胶复合材料,可以充分发挥两者的优势,实现性能的互补。
聚二甲基硅氧烷(PDMS)在生物医学、电子器件、光学领域等方面具有广泛应用。
石墨烯气凝胶由于其高比表面积和优异的力学性能,被视为具有巨大潜力的功能材料。
将这两种材料复合,可以提高复合材料的力学性能、电导率和热稳定性。
聚二甲基硅氧烷/石墨烯气凝胶复合材料在以下几个方面表现出优异性能:
1.力学性能:石墨烯的加入可以显著提高聚二甲基硅氧烷的力学性能,使其更具韧性和耐磨性。
2.电导率:石墨烯气凝胶具有高导电性,将其与聚二甲基硅氧烷复合,可提高复合材料的电导率。
3.热稳定性:石墨烯的加入可以提高聚二甲基硅氧烷的热稳定性,使其在高温环境下仍具有良好的性能。
4.生物相容性:聚二甲基硅氧烷本身具有优异的生物相容性,石墨烯气凝胶也具有良好的生物相容性,因此复合材料在生物医学领域具有广泛的应用前景。
5.摩擦性能:石墨烯的加入可以降低复合材料的摩擦系数,提高其耐磨性能。
聚二甲基硅氧烷/石墨烯气凝胶复合材料在多个领域具有广泛的应用前景,如能源存储设备、传感器、生物医学、航空航天等。
Advanced Materials Industry38国外气凝胶材料研究进展■ 文/江 洪 王春晓 中国科学院武汉文献情报中心气凝胶是世界上密度最小的固体,密度仅为3.55k g /m 3,也被称为“固态的烟”,具有膨胀作用、离浆作用等,还具有高比表面积、绝热等特征。
气凝胶材料在20世纪30年代由美国塞缪尔·基斯勒(Samuel Kistler)教授采用超临界干燥方法制备而成。
气凝胶自身的结构和性能使其具有重要的应用价值,广泛应用于服饰、建筑、环保等众多领域。
本文对国外气凝胶材料的制备工艺和应用进展进行介绍。
1 不同气凝胶材料的制备1.1 纤维素气凝胶纤维素是自然界中一种可再生的绿色生物质材料,其广泛存在于植物和部分海洋生物中。
纤维素气凝胶是以纤维素作为原材料制备而成,这种材料具有生物降解等环保特性。
纤维素气凝胶种类丰富,如细菌纤维素气凝胶、纳米纤维素气凝胶,其制备工艺通常都包含冷冻干燥等流程。
法国国家科学研究中心G a v i l l o n等人[1]将纤维素材料溶解于氢氧化钠溶液中,制备了一种新型高度多孔纯纤维素气凝胶材料,其内部比表面积在200~300m 2/g左右,密度在0.06~0.3g/cm 3之间。
科罗拉多大学Blaise等[2]人利用啤酒酿造工业的废弃物作为培养基,将使用醋酸杆菌制备出的细菌纤维素,再通过超临界干燥法等方法制备出一种细菌纤维素气凝胶材料,具有低热导率的特征,并提出未来使用食物垃圾作为培养基来提高生产力。
德国航空航天中心Schestakow等人[3]首先使用微晶纤维素作为原材料制备一种气凝胶,然后通过使用普通溶剂如水、乙醇、异丙醇或丙酮等溶剂将气凝胶进行再生,制备出了一种浓度为1%~5%(质量分数)的纤维素气凝胶,通过扫描电镜对这些气凝胶的收缩、比表面积、密度以及微观结新材料产业 NO.02 202139构和力学性能进行了表征,结果表明用丙酮再生的纤维素气凝胶的比表面积比用水再生的纤维素气凝胶高出60%。
石墨烯气凝胶水热法原理Graphene aerogels (GAs) are a promising material due to their unique properties, such as high surface area, good electrical conductivity, and mechanical strength. In recent years, water-based synthesis methods, such as the hydrothermal method, have been widely used to produce graphene aerogels.水热法合成石墨烯气凝胶是一种具有独特特性的材料,如高比表面积、良好的电导率和机械强度。
近年来,水基合成方法,如水热法,已被广泛用于生产石墨烯气凝胶。
The water-based synthesis of graphene aerogels typically involves the use of graphene oxide (GO) as a precursor, which is then reduced to graphene in the presence of a reducing agent during the hydrothermal process. During the water-based synthesis, the GO sheets are dispersed in water and form a stable colloidal solution, which is then subjected to hydrothermal treatment to form a three-dimensional porous structure.水基合成石墨烯气凝胶通常涉及使用氧化石墨烯(GO)作为前体,然后在水热过程中在还原剂存在的情况下还原为石墨烯。
竟然能用3D打印出比空气还轻的材料
气凝胶(Aerogels)是世界上最轻的材料之一。
石墨烯气凝胶(Graphene aerogel)又是该品类中最轻的一种——一大块放在小棉花球上都不会有压痕。
据美国网站QUARTZ报道,这种材料的密度约为水的千分之一,比空气还轻!超低密度的气凝胶应用范围极广,研究人员发现,它可以用来吸取漏油、制作“隐形”斗篷等。
目前,纽约州立大学水牛城分校(State University of New York at Buffalo,简称SUNY Buffalo)科学家在《Small》期刊上发表的文章表示,已经知道如何用3D打印技术打印石墨烯气凝胶,但目前仅限于实验室的原型。
石墨烯只是一个碳原子单层。
自2004年首次成功分离以来,因强度、柔软性和传导性等特性备受追捧。
本质上,气凝胶是一种用空气代替液体的凝胶。
石墨烯气凝胶因高压缩性和强导电性闻名。
这些特性均源自材料本身的。
材料类作文模板英语二英文回答:Introduction。
The rapid development of materials science has revolutionized various aspects of modern society. Advanced materials have enabled groundbreaking advancements in industries ranging from healthcare to aerospace. This essay will delve into the significance of materials in our daily lives, highlighting specific examples and discussing their impact on our technological progress.Materials in Healthcare。
Materials play a crucial role in modern healthcare. Biocompatible materials have paved the way for medical implants, such as artificial joints and heart valves, significantly improving the lives of patients. Tissue engineering, using biomaterials as scaffolds for cellgrowth, holds promise for regenerating damaged tissues and organs. Advanced materials also contribute to diagnostic tools, such as MRI and CT scanners, enabling accurate disease detection.In the field of drug delivery, materials science has developed targeted drug delivery systems, which can release drugs directly to specific sites in the body, increasing efficacy and reducing side effects. Biodegradable polymers, for instance, are used to create drug-eluting stents, which gradually release medication to prevent blood clots in arteries.Materials in Energy。
聚二甲基硅氧烷石墨烯气凝胶
聚二甲基硅氧烷(Polydimethylsiloxane,PDMS)是一种有机硅聚合物,具有较低的毒性和良好的热稳定性。
它常被用于制备气凝胶材料。
石墨烯气凝胶是一种由石墨烯构成的三维多孔固体材料。
石墨烯是由碳原子以蜂窝状排列形成的单原子厚度层状结构,具有优异的力学性能、导电性能和热导性能。
石墨烯气凝胶利用石墨烯的这些优良性能,结合多孔结构的特点,具有很多潜在的应用领域,如电子器件、催化剂载体、吸附材料等。
将聚二甲基硅氧烷与石墨烯混合制备石墨烯气凝胶可以改善气凝胶材料的柔软性和韧性,同时保留石墨烯的优异性能。
这样的复合材料可以具有较高的表面积和可调的孔隙结构,具有更多的应用潜力。
例如,可以用于吸附有机物、催化剂载体、能量存储等领域。
总的来说,聚二甲基硅氧烷与石墨烯的复合材料,即聚二甲基硅氧烷/石墨烯气凝胶,可以有效地将二者的性能进行结合,具有广泛的应用前景。
气凝胶简介气凝胶(Aerogel)是一种三维网络结构的纳米先进材料。
当凝胶脱去大部分溶剂,使凝胶中液体含量比固体含量少得多,或凝胶的空间网状结构中充满的介质是气体,外表呈固体状,这即为气凝胶。
气凝胶具有低密度、低导热性、高孔隙率、耐高温、不燃等优越性能,在航空航天、建筑、石油化工、军工、热能工程、交通运输和家用电器等领域有非常广阔的应用前景。
简介气凝胶是一种固体物质形态,世界上密度最小的固体之一。
密度为3千克每立方米。
一般常见的气凝胶为硅气凝胶,最早由美国科学工作者Kistler在1931年因与其友打赌制得。
气凝胶的种类很多,有硅系,碳系,硫系,金属氧化物系,金属系等等。
aerogel是个组合词,此处aero是形容词,表示飞行的,gel显然是凝胶。
字面意思是可以飞行的凝胶。
任何物质的gel只要可以经干燥后除去内部溶剂后,又可基本保持其形状不变,且产物高孔隙率、低密度,则皆可以称之为气凝胶。
因为密度极低,目前最轻的气凝胶仅有0.16毫克每立方厘米,比空气密度略低,所以也被叫做“冻结的烟”或“蓝烟”。
由于里面的颗粒非常小(纳米量级),所以可见光经过它时散射较小(瑞利散射),就像阳光经过空气一样。
因此,它也和天空一样看着发蓝,如果对着光看则有点发红。
由于气凝胶中一般80%以上是空气,所以有非常好的隔热效果,一寸厚的气凝胶相当20至30块普通玻璃的隔热功能。
即使把气凝胶放在玫瑰与火焰之间,玫瑰也会丝毫无损。
制备方法气凝胶最初是由S.Kistler命名,由于他采用超临界干燥方法成功制备了二氧化硅气凝胶,故将气凝胶定义为:湿凝胶经超临界干燥所得到的材料,称之为气凝胶。
在上世纪90年代中后期,随着常压干燥技术的出现和发展,科学界普遍接受的气凝胶的定义是:不论采用何种干燥方法,只要是将湿凝胶中的液体被气体所取代,同时凝胶的网络结构基本保留不变,这样所得的材料都称为气凝胶。
气凝胶的制备通常由溶胶凝胶过程和超临界干燥处理构成。
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Interfaces, 2014, 6 (14), pp 11158 -1166Publication Date (Web): April 23, 2014 (Research Article)DOI: 10.1021/am500996c11、G raphe ne as an In terfacial Layer for Improv ing Cycli ng Performa nee of Si Nano wiresin Lithium-Ion Batteries (石墨烯作为界面层提高锂离子电池用Si纳米线的循环性能)Fan Xia, Sunsang Kwon, Won Woo Lee, Zhiming Liu, Suhan Kim, TaeseupSong, Kyoung Jin Choi, Ungyu Paik, and Won Il ParkNano Lett., 2015, 15 (10), pp 6658 七664Publication Date (Web): September 11,2015 (Letter)DOI: 10.1021/acs.nanolett.5b0248212、F abrication of Graphene Embedded LiFePO4 Using a Catalyst Assisted Self AssemblyMethod as a Cathode Material for High Power Lithium-lo n Batteries (用催化辅助自组装法制备用于高能量型锂离子电池的嵌有石墨烯的LiFePO4的阳极材料)WonKeun Kim, WonHee Ryu, DongWook Han, SungJin Lim, JiYong Eom, and HyukSang KwonACS Appl. Mater. Interfaces, 2014, 6 (7), pp 4731 -4736Publication Date (Web): March 12, 2014 (Research Article)DOI: 10.1021/am405335k13、M esoporous Td Nanocrystals Grown in Situ onGraphene Aerogels for High Photocatalysis and Lithium-lon Batteries (在石墨烯上原位生长微孔TiO2纳米晶以用于高效光催化和锂离子电池)Bocheng Qiu, Mingyang Xing, and Jinlong ZhangJ. Am. Chem. Soc., 2014, 136 (16), pp 5852 -855Publication Date (Web): April 8, 2014 (Communication)DOI: 10.1021/ja500873u14、F abrication of Nitrogen-Doped Holey Graphene Hollow Microspheres and Their Use as an Active Electrode Material for Lithium Ion Batteries (在中空微米球上制备氮掺杂多孑L石墨烯机器用于锂离子电池的活性电极中)Zhong-Jie Jiang and Zhongqing JiangACS Appl. Mater. Interfaces, 2014, 6 (21), pp 19082 -9091Publication Date (Web): October 13, 2014 (Research Article)DOI: 10.1021/am505060415、E lastic a-Silic on Nano particle Backb oned Graphe neHybrid as a Self-Compact ing Anode for High-Rate Lithiumlon Batteries (用于高倍率锂离子电池的具有自密实的阴极材料:生长弹性a-Si纳米颗粒的石墨烯)Minseong Ko, Sujong Chae, Sookyung Jeong, Pilgun Oh, and Jaephil ChoACS Nano, 2014, 8 (8), pp 8591 七599Publication Date (Web): July 31,2014 (Article)DOI: 10.1021/nn503294z16、H igh-Rate, Ultralong Cycle-Life Lithium/Sulfur BatteriesEnabled byNitrogen-Doped Graphene (用于高倍率超长循环寿命Li-S电池的氮掺杂石墨烯)Yongcai Qiu, Wanfei Li, Wen Zhao, Guizhu Li, Yuan Hou, Meinan Liu, LishaZhou, Fangmin Ye, Hongfei Li, Zha nhua Wei, Shihe Yang, Wenhui Duan,Yifan Ye, Jinghua Guo, and Yuegang ZhangNano Lett., 2014, 14 (8), pp 4821 -4827Publication Date (Web): July 29, 2014 (Letter)DOI: 10.1021/nl502047518、P hosphorus and Nitrogen Dual-Doped Few-Layered Porous Graphene: AHigh-Performa nee Anode Material for Lithium-I on Batteries (一种用于锂离子电池的具有高性能阴极材料:磷和氮双共掺杂少层多孔石墨烯)Xinlong Ma, Guoqing Ning, Chuanlei Qi, Chenggen Xu, and Jinsen GaoACS Appl. 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Interfaces, 2015, 7 (21), pp 11239 -1245Publication Date (Web): May 12, 2015 (Research Article)DOI: 10.1021/acsami.5b02724Material for Sodium/Lithium Ion Batteries (石墨烯上原位生长超小TiO2纳米颗粒复合材料用作钠/锂离子电池阴极材料)Huiqiao Liu, Kangzhe Cao, Xiaohong Xu, Lifang Jiao, Yijing Wang, andHuatang Yuan21、General Strategy for Fabricating Sandwich-likeGraphene-Based Hybrid Films for Highly ReversibleLithium Storage (用于高可逆Li存储的类三明治石墨烯基混合薄膜的常用制备方法)Xiongwu Zhong, Zhenzhong Yang, Xiaowu Liu, Jiaqing Wang, Lin Gu, andYan YuACS Appl. Mater. 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PintNan oscale, 2014,6, 4669-4675DOI: 10.1039/C4NR00390J, Pap er32、Con trolled Lithium Den drite Growth by a Syn ergistic Effect ofMultilayered Graphe ne Coati ng and an Electrolyte Additive (通过多层石墨烯包覆和电解液添力口剂的协同效应来控制锂枝晶的生长)Joo-Se ong Kim, Dae Woo Kim, Hee Tae Jung, and Jang Wook ChoiChem. Mater., 2015, 27 (8), pp 2780 T2787Publication Date (Web): March 26, 2015 (Article)DOI: 10.1021/cm503447u33、Self-assembled graphene and LiFePO4 composites with superior high rate capability forlithium ion batteries (自组装具有高倍率容量的石墨烯和LiFePO4复合材料用于锂离子电池)Wen-Bin Luo, Shu-Lei Chou, Yu-Chun Zhai and Hua-Kun LiuJ. Mater. Chem. A , 2014,2, 4927-4931DOI: 10.1039/C3TA14471B, Paper34、Graphe ne enhanced carb on-coated tin dioxide nano particles for lithium-i on sec on dary batteries (石墨烯增强碳包覆TiO2纳米颗粒用于锂离子电池)Zhon gtao Li, Guilia ng Wu, Dong Liu, Wen ti ng Wu, Bo Jia ng, Jin gta ng Zheng, Yanpeng Li,Jun hua Li and Min gbo WuJ. Mater. Chem. 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中低温制备气凝胶及其在电池散热中的应用杨云龙;徐自强;吴孟强;张大庆;李元勋【摘要】石墨烯气凝胶(graphene aerogel,GA)由于其不理想的导热性能限制了它在储能装置中的应用.针对这个问题,系统而定量地研究了如何在提高GA热性能的同时降低电导率并应用在电池散热中的方法.该方法通过对GO进行氮掺杂并在中低温环境下进行水热反应制备复合气凝胶,对制备的复合气凝胶进行一系列相关测试,证明其优异的性能,并将制备的复合气凝胶用于电池散热中,设计了相关实验.实验结果表明,相较于空气自热冷却,采用复合气凝胶填充的电池pack组在放电时温升降低了15~23℃,表明了复合气凝胶用于电池散热的可行性和有效性.【期刊名称】《电源技术》【年(卷),期】2019(043)006【总页数】4页(P992-994,1076)【关键词】气凝胶;氮掺杂;储能装置;电池散热【作者】杨云龙;徐自强;吴孟强;张大庆;李元勋【作者单位】电子科技大学材料与能源学院,四川成都611731;电子科技大学材料与能源学院,四川成都611731;电子科技大学材料与能源学院,四川成都611731;成都汽车产业研究院,四川成都610101;电子科技大学电子薄膜与集成器件国家重点实验室,四川成都610054【正文语种】中文【中图分类】TM91在过去几年中,石墨烯在各个领域都产生了巨大的影响。
由于其卓越的电、热、机械和光学性能,使它在微电子器件和储能器件中有很大的应用潜力,然而,很少有可靠的方法来处理这种原子级厚度的二维材料,这严重阻碍了它的器件级特性和广泛应用。
近年来,石墨烯气凝胶(graphene aerogel,GA)作为一种自组装的石墨烯材料,因其超高的比表面积和超低的密度等特性而备受瞩目。
GA代表了一种孔隙率高、密度低、导电性好的新型单孔结构材料,在许多领域有着广阔的应用前景。
目前,GA的制备方法主要有水热反应制备法、化学气相沉积法、有机溶胶法等。