绿色多功能材料--多孔陶瓷

多孔陶瓷是一种新型材料,由于其具有较低的热传导等优良性能,而被广泛地应用于众多科学领域。本文综述了多孔陶瓷的制备工艺、性能及应用,特别是详尽的讨论了多孔陶瓷在各个领域的应用,最后展望了多孔陶瓷的发展前景及今后的发展方向。     

多孔陶瓷——绿色功能材料

本文概述了多孔陶瓷材料的制备方法，性能应用以及研究开发的前景。     

多孔陶瓷的制备工艺

介绍了微波加热工艺、颗粒堆积工艺、水热－热静压工艺等制备多孔陶瓷材料的技术,展望了多孔陶瓷材料的发展前景。     

绿色环保材料--多孔陶瓷

前言 现代社会的发展，使得世界各国对环境保护高度重视。因为地球的温暖化、臭氧空洞、酸雨及各种化学物质造成的水质、土壤、大气、海洋的污染，热带雨林的破坏、珊瑚礁的破坏、荒漠化及由工业、生活废弃物所带来种种环境污染均在日益加剧。环境保护已成为制约社会进步和发展的瓶颈。提倡绿色环保理念，研发绿色环保材料，实现无污染的绿色化工业生产是人类文明、科技进步的体现和象征。     

多孔陶瓷的制备与应用

综述了多孔陶瓷的类型、性能、制备工艺及其在工业中的应用，并对多孔陶瓷的研究与应用做了展望。     

《多孔功能陶瓷制备与应用》

本书作为国内第一部关于多孔陶瓷方面的专著，全面系统地介绍了多孔陶瓷的分类，各种传统和先进的制备方法，介绍了多孔陶瓷的结构及其表征、多孔陶瓷的各种性能以及各种类型的多孔陶瓷。本书采用理论结合实际的方式，以大量的实例来说明、分析问题，既有一定的理论深度又有较强的应用性，适合相关专业及大专院校学生、研究生、讲师和科技工作者阅读。     

多孔陶瓷的制备及应用进展

本文综述了多孔陶瓷的分类及其制备方法,并介绍了多孔陶瓷广阔的应用前景和未来的研究方向。     

多孔陶瓷的制备、性能及应用：（I）多孔陶瓷的制造工艺

多孔陶瓷的制备方法很多，其成孔机理主要有机械挤出、颗粒堆积、成孔剂、发泡、多孔模板、凝结结构成孔。本文根据成孔机理的不同综述了多孔陶瓷的制备工艺最新研究进展。     

多孔陶瓷及其在清洁方面的应用

多孔陶瓷是一种新型材料,由于其具有化学稳定性等优良特性,而被广泛地应用于众多科学领域。综述了多孔陶瓷的特点、分类、制备工艺,并着重论述其在清洁方面的应用。展望多孔陶瓷的发展前景。     

氧化铝多孔陶瓷制备工艺的研究

本研究了氧化铝多孔陶瓷的制备工艺，探讨了制备工艺参数对多孔陶瓷性能的影响。研究结果表明，氧化铝骨料颗粒度是得到不同孔径多孔陶瓷的关键；粘结剂含量对多孔陶瓷的孔隙率、强度有很大影响；烧 是得到性能多孔陶瓷的重要因素。通过改变工艺参数，可以得到平均孔径1至10μm，开气孔率40％的氧化铝多孔陶瓷。     

泡沫陶瓷材料制备方法及应用的研究进展

分析了泡沫陶瓷广泛的应用前景，总结了泡沫陶瓷的分类方法和特点，详细介绍了其生产制备的工艺方法和典型应用，最后提出了我国泡沫陶瓷工业的发展需要注意的问题。     

High-strength thermal insulating porous mullite fiber-based ceramics

How to improve the strength of fibrous porous ceramics dramatically under the premise of no sacrificing its low density and thermal conductivity has remained a challenge in the high-temperature thermal insulation field. In this paper, a new kind of high-strength mullite fiber-based ceramics composed of interlocked porous mullite fibers was prepared by nanoemulsion electrospinning and dry pressing method. Results show that as to the porous ceramics with the same density (～ 0.8 g/cm³), the three-dimensional skeleton structure composed of porous mullite fibers was much denser than that composed of solid mullite fibers. Therefore, porous mullite fiber-based ceramics exhibited a higher compressive strength (5.53 MPa) than that of solid mullite fiber-based ceramics (3.21 MPa). In addition, porous mullite fiber-based ceramics exhibited a superior high-temperature heat insulation property because the porous structure in fibers could reduce the radiant heat conduction. This work provides new insight into the development of high-temperature thermal insulators.     

High-strength thermal insulating mullite nanofibrous porous ceramics

Mullite fibrous porous ceramics is one of the most commonly used high temperature insulation materials. However, how to improve the strength of the mullite fibrous porous ceramics dramatically under the premise of no sacrificing the low sample density has always been a difficult scientific problem. In this study, the strategy of using mullite nanofibers to replace the mullite micron-fibers was proposed to fabricate the mullite nanofibrous porous ceramics by the gel-casting method. Results show that mullite nanofibrous porous ceramics present a much higher compressive strength (0.837 MPa) than that of mullite micron-fibrous porous ceramics (0.515 MPa) even when the density of the mullite nanofibrous porous ceramics (0.202 g/cm³) is only around three quarters of that of the mullite micron-fibrous porous ceramics (0.266 g/cm³). The obtained materials that present the best combination of mechanical and thermal properties can be regarded as potential high-temperature thermal insulators in various thermal protection systems.     

Lightweight and thermally insulating aluminum borate nanofibrous porous ceramics

Aluminum borate porous ceramics are excellent candidates for high-temperature insulation applications. Current research on aluminum borate-based porous ceramics mainly focuses on porous ceramics made up of aluminum borate whiskers, whose low aspect ratio leads to a relatively dense porous structure; this results in porous ceramics with low porosity and relatively high thermal conductivity. In this study, we report the manufacturing of aluminum borate nanofibrous porous ceramics by an agar-based gel casting method using electrospun nanofibers with a high aspect ratio as the three-dimensional skeleton structure. We explored the effect of the alumina/boron oxide molar ratio on the microscopic morphology and crystal phase composition of the aluminum borate nanofibers and that of the sintering temperature on the micro and macro properties of porous ceramics based on the nanofibers. The results showed that aluminum borate nanofibers with an alumina/boron oxide molar ratio of 7:2 had the densest microscopic morphology, and the corresponding porous ceramics exhibited a higher porosity (91%) and lower thermal conductivity (0.11 W m^?1 K^?1) after sintering at 1200 °C than aluminum borate porous ceramics with aluminum borate whiskers as the skeleton. The successful synthesis of aluminum borate nanofibrous porous ceramics provides new insights into the development of high-temperature insulators.     

泡沫陶瓷的研究进展

介绍了泡沫陶瓷的特性、制造工艺、用途及在冶金工业中的应用。指出除现有的堇青石质、氧化铝质、堇青石－氧化铝质过滤器外，还开发了氮化硅质、碳化硅质、氧化铝质产品。     

多孔陶瓷的制备和应用研究进展

由于多孔陶瓷材料在化学工业、信息通讯、生物技术、环境能源等领域的广泛应用，近年来倍受关注。综述了多孔陶瓷的几种制备方法，并将多孔陶瓷在过滤材料、催化剂载体、生物材料、吸音隔热材料、敏感材料上的应用情况作了简要说明，充分肯定了多孔陶瓷对人类社会的作用。     

3D-Printed lightweight ceramics using capillary suspensions with incorporated nanoparticles

A new versatile route is reported to produce tailored porous sintering materials with high mechanical strength. A self-assembly mechanism deposits trace amounts of nanoparticles at contact areas between coarse ceramic particles prior to sintering, resulting in large and uniformly dense sintering bridges. This increases the porosity up to 75 % and simultaneously offers higher mechanical strength in comparison to similar materials even when weaker silica nanoparticles are introduced. This route is ideally suited for robocasting as well as conventional extrusion and, thus, can be used for rapid prototyping and mass production. We report the highest compressive strength-to-weight ratios for lightweight macroporous ceramics, covering an unrivaled density range while offering exceptional flexibility in tailorable microstructure. The strength is dominated by the silica bridges and identical strength is achieved for alumina and aluminosilicate structures. Finally, this route can be used to build hierarchical structures by point-welding particles while preserving inner surface area.     

Microstructure of TiO2 porous ceramics by freeze casting of nanoparticle suspensions

During freeze casting of TiO₂ porous ceramics, the porous architecture is strongly influenced by TiO₂ particle size, solids loading, and cooling temperature. This work investigates the influences of particle size, freezing substrate, and cooling temperature on the TiO₂ green bodies prepared by freeze casting. The results show that the lamellar channel width with 100 nm particles is larger than that of 25 nm particles, yet the ceramic wall thickness is noticeably decreased. The lamellar structure is more ordered when using a copper sheet than glass as its freezing substrate. A finer microstructure results when frozen at − 50 ℃ than − 30 ℃. Such porous materials have application potentials in a wide range of areas such as photocatalysis, solar cells, and pollutant removal and should be further studied.     

Digital light processing fabrication of porous cordierite ceramics from polysilxoane-based slurries

Herein, a pohotosentive polysiloxane (PSO)/talc/Al₂O₃ slurry was prepared for the digital light processing printing. Liquid photosensitive PSO was exploited as a triple-functioned material, acting both as the resin matrix, a high reactive Si source and a pore generator. Through adjusting the raw material components, polysiloxane can be sintered with talc and Al₂O₃ fillers after being pyrolyzed to 1200 ^oC while pores with variable diameters can be generated. Ternary component slurry prepared based on the above strategy possesses the characteristics of low viscosity, high reaction activity and good homogeneity. Sintering schedule of the printed thin-walled precursor was investigated to guarantee the morphology of cordierite product was consistent with the printed model. This work aims to provide a new strategy for DLP printing of MgO-Al₂O₃-SiO₂ ternary and other polymer derived ceramics.     

Synthesis and characterization of porous ceramics from spodumene tailings and waste glass wool

Glass wool waste remains a challenging waste fraction with relatively little utilization prospects. The present study investigated the development of porous ceramic materials from glass wool waste and spodumene tailings mainly made of quartz feldspar sand (QFS), with 0.05–0.5% silica carbide (SiC) as a pore-forming agent. The formulated compositions were sintered at 950 °C and analyzed in terms of mechanical properties, phase composition, and microstructure using X-ray diffraction (XRD), scanning electron microscopy (SEM), and X-ray micro-computed tomography. The results showed that a synergetic effect of glass wool and SiC started to be significant from 15 wt% glass wool and 0.05 wt% SiC, the strength reducing and the porosity increasing with the increase of SiC. The porous ceramics were largely amorphous, with compressive strength ranging from 5 to 30 MPa while the water absorption and apparent density ranged from 2 to 10% and 0.7–1.2 g/cm³, respectively. The total porosity varied between 20 and 75%, and the wall thickness between 62 and 68 μm; besides, most of the prepared materials floated in water. These results are of interest for the repurposing of glass wool waste in the development of non-flammable lightweight materials for potential filtering or high-rise building applications.