Graphene airgel is the lightest materials to get Guinness World Records

Recent news, graphene 3D printing Aerogels material was declared the Guinness World Records company as \”the world\’s smallest density of the material.\” The material density of only 0.5 milligrams per cubic centimeter, the performance is very good, and can be widely applied to a flexible drive, a flexible robot, sensor, the deformable electrode material, drug delivery and delivery, lightweight insulation and protective materials. Aerogels are a widely used substance is the world\’s smallest solid density, density of only 3 kilograms per cubic meter. This object is spongy and optical excellent heat insulator, it is understood, in recent years using a 3D printer can produce the gel. In various airgel, airgel graphene concern are the highest, since it can be applied in the battery and the electronic components of the catalyst. 3D printing graphene airgel square sample is lightweight, it can be hung on-head without bending. The material was declared the Guinness World Record for the company\’s lightest 3D printing material world. Recent news, graphene airgel material 3D printing company was declared the Guinness World Record for the lightest 3D printing material world. The density of the material is so small and can be safely placed on the petals or cotton. The material is co-produced by the Industrial and Manufacturing Systems Engineering Assistant Professor Kansas State University, Lin Dong, assistant professor of industrial and systems engineering at Buffalo and the University of Chi Zhou, associate professor of Lanzhou University Zhang strong. Graphene airgel light as a feather Guinness World Records graphene airgel named \”minimum density of 3D printing materials of construction.\” 3D printing graphene airgel density of only 0.5 milligrams per cubic centimeter. Researchers in February 2016 the material was prepared, and has been officially recognized by Guinness World Records. Their achievement will be unveiled in the \”Guinness World Records 2018 edition\” in the. \”Graphene is a revolutionary material, it is also important airgel form,\” Lin said. \”We developed a 3D printing graphene aerogels the performance is very good, and can be widely applied to a flexible drive, a flexible robot, sensor, the deformable electrode material, drug delivery and delivery, lightweight insulation and protective materials. graphene (graphene) is a kind of honeycomb planar film is formed sp2 hybridization of carbon atoms, is aOnly one kind of quasi-two-dimensional material atomic layer thickness. Because of its very good strength, flexibility, conductivity, thermal conductivity, optical properties, in physics, materials science, electronic information, computer, aerospace and other fields have been leaps and bounds. 3D printing technology of graphene is also pioneering industrial and manufacturing systems engineering from Kansas State University assistant professor Lin holds a three-dimensional printed graphene airgel sample, Guinness World Records company called it \”the least dense 3D printing material\” . The study of the preparation process of 3D printing seminal graphene airgel material, and the same preparation process groundbreaking. The researchers used two nozzles improved inkjet printer, they are cold plate at minus 20 degrees Celsius in 3D printing droplets of the graphene oxide and water mixture in the freezer. This method of creating 3D structure of graphene and ice chilled water, which helps maintain its shape graphene. When the printing is completed, researchers 3-D material is placed in a freeze dryer, by providing a high vacuum and low temperature environment to remove the ice, the rest is a three-dimensional graphene airgel material may retain its shape at room temperature . This way produced the 3D printing graphene airgel density from 0.5 to 10 mg per cubic centimeter, having a relatively high conductance and compressibility. The key to this new approach is that freeze casting method in conjunction with 3D printing, the printing process temperature is -25 ° C, at such a low temperature, each layer of sediment will quickly freeze, you can build a research and development team graphene oxide support structure of ice (ice-made structures are printed by another printer is loaded out of the water), then a new layer of each deposited layer will melt away frozen below the top, which makes possible the graphene free association before freezing again. This step greatly increased hydrogen bond formation to stimulate the structural integrity of 3D printing. Application of three-dimensional structure to achieve a three dimensional structure of graphene graphene airgel let them in water, there is a potential application in various directions catalyst, heat, microcontroller-driven, electrical components, sensors and the like. But really close to industrial little, the biggest reason is too expensive. 1. Water graphene airgel has good lipophilic, and because of its super-elasticity and porosity, can be used for offshore oil costsProcessing. Ultra-low density gives it up to several hundred monoclonal g oil adsorption performance, and subsequent removal either by extrusion or oil burner, it remains intact throughout the airgel structure can be sustainable use. Photos from (JMCA, 2014,2,2934-2941) 2. Professor Pingxin Liang catalyst support by Shanghai Jiaotong load ferroferric oxide nanoparticles airgel, and finally found that the gas load on the triiron tetraoxide nanoparticles gel catalyst performance is better than a four iron oxide nanoparticles, which in fact is predictable (JACS, 2012, 134: 9082-9085). Because the porous airgel materials (> 99%) and a large area of ​​comparison, when the catalyst particles uniformly supported on an airgel, the contact area of ​​the catalyst with the reactants involved in the reaction is greater than the actual pure nanoparticles. Airgel acts as nanoparticles from the stack becomes dispersed. That airgel catalyst can be a carrier or a good fixative. The sensor Changchun Institute of Applied Chemistry Chen Wei researchers proposed the application of NO2 in air monitoring SnO2 graphene-based airgel particles for a carrier (Analytical Chemistry, 2015, 87,1638-1645). Principle is as follows: SnO2 (semiconductor) is increased conductivity under reducing atmosphere, the conductive weakened under an oxidizing atmosphere, but some of the disadvantages of SnO2 limit its application, for example, poor electrical conductivity at room temperature, work is based on SnO2 gas sensor high temperature (H2: 170-200 ℃, CO: 200 ℃), SnO2 readily agglomerate during synthesis results in performance degradation and the like. Utilize graphene aerogels as carriers, and after almost perfectly on the SnO2 particles supported to solve these problems, the first conductivity is greatly improved, secondly preventing its agglomeration, even working temperature has fallen to 50 ℃, at room temperature such that under applications possible. Which it is also the use of graphene aerogels having good electrical conductivity.

相关新闻