Hierarchically porous ceria with tunable pore structure from particle-stabilized foams

We firstly fabricated CeO₂ ceramic foams with tunable structure by using particle-stabilized bubbles as template, and designed their interconnected porous structure and even hierarchically porous structure, which endows them the penetration ability for gases or liquids. Hollow spheres with single-layer shell were innovatively selected as the pore-former, which allows for the formation of open pores on the cell wall. Moreover, 3D printing CeO₂ particle-stabilized foams are realized with the aid of direct ink writing, which enables the production of CeO₂ ceramic foams with complex shape. Highly porous CeO₂ with relatively high compressive strength have been fabricated, the porosity of which varies from 81.0% to 92.0% while their excellent compressive strength ranges from 5.0 MPa to 20.0 MPa. Attributed to the hierarchical porous structure, uniform pore size distribution as well as densely assembled cell wall, 3D printing CeO₂ ceramic foams possess superior mechanical performance at high porosity level.     

Processable Thermally Conductive Polyurethane Composite Fibers

The demand for wearable electronics has resulted in an increasing interest in the development of functional fibers, with a specific focus upon the development of electrically conductive fibers incorporable into garments. However, the production of thermally conductive fibers for heat dissipation has been largely neglected. Owing to the very rapid development of miniaturized wearable electronics, there is an increasing need for the development of thermally conductive fibers as heat sinks and thermal management processes. In this study, thermally conductive but electrically insulating boron nitride nanopowder (BNNP) fillers are used to effectively enhance the thermal conductivity and mechanical properties of elastomeric polyurethane fibers. Thermal conductivity enhancement of more than 160% is achieved at very low loadings of BNNP (less than 5 wt%) with an improvement in the mechanical properties of the unmodified fiber. These thermally conductive fibers are also incorporated into 3D textile structures as a proof of processability.     

Coolnise导热排湿纬编针织产品的开发

介绍了Coolnise涤纶纤维的性能，简述了它的导热排湿针织产品的形成方法和在生产中需注意的问题。     

导电高分子钽电解电容器的研究进展

综述了导电高分子钽电解电容器的最新研究进展。比较了导电高分子钽电解电容器和二氧化锰钽电解电容器在结构、制造工艺和性能方面的差别。还介绍了聚吡咯(PPy)、聚乙撑二氧噻吩(PEDOT)和聚苯胺(PANi)钽电解电容器的研究状况。导电高分子膜的形成工艺对钽电解电容器性能影响很大。改进和开发新型阴极材料是降低钽电解电容器等效串联电阻Res的重要途径。     

通信,计算机与消费电子的结合—C＆C＆C（上）

九十年代开始了通信，计算机和消费电子的三结合。文章介绍这三者相结合的意义，对信息化社会的作用及其最新的进展。     

导电塑料概述

概述了导电塑料的发展状况，对其分类情况，应用领域，导电机理及制备工艺进行了阐述，并介绍了导电塑料的最新进展及动向。     

用于氮化铝陶瓷基片的电子浆料

研制了用于ＡｌＮ陶瓷基片的导体银浆和电阻浆料。采用低ＰｂＯ含量晶化玻璃料配制银导体浆料，玻璃软化点４３０～４５０℃。电阻浆料采用ＰｂＯ（质量分数小于６％）的晶化玻璃料Ｂ、Ｃ、Ｄ三种，软化点分别为５２０℃、６９０℃、６１０℃。改变ＲｕＯ２与玻璃相的质量比，能控制电阻浆料的方阻值。质量比在５０比５０至１５比８５之间。加入添加剂ＭｎＯ２可改善电阻浆料的ＴＣＲ，阻值在２０Ω／□～１ＭΩ／□范围内，ＴＣＲ绝对值小于２００×１０－６／℃。     

炼钢电炉用耐火材料

叙述了炼钢用耐火材料的发展动态，特别是电炉（含超高功率和直流电弧炉）炼钢用耐火材料对于我国钢铁工业发展的意义和关系。直流电弧炉内导电炉底耐火材料的技术性能取决于所用的材质、制造工艺、石墨的粒度和含量以及热处理的温度和制度。     

纸张图文防涂改的途径和办法

本文归纳了国内外现有的纸张图文防涂改途径和办法,并根据违法分子常用的涂改方式着重介绍了纸张图文防涂改的手段.