利用非金属矿物制备屋面防水隔热材料

利用非金属矿物———粉石英、重钙粉、硅灰石等为主要原料加工而成的新型、轻质材料不仅具有防水隔热抗辐射性能 ,而且能显著提高混凝土抗渗能力和抗压强度 ,还能提高混凝土抗老化性能 ,具有施工方便 ,适应性强等特点 ,现已在本地区普遍推广并取得良好的经济效益     

Learning from Nature: Using bioinspired approaches and natural materials to make porous bioceramics

Learning from Nature is a humble and smart approach to fabricate implantable biomaterials with complex hierarchies and porous microstructures which can effectively mimic the natural tissues that they have to replace and regenerate. Biological structures such as corals, marine sponges, wood, and vegetal products can be used as sacrificial templates to produce porous bioceramics that inherit the natural morphology and multiscale porous organization. This review gives a picture of bioinspired ceramics for medical applications and highlights the technological and industrial challenges associated with this attractive and fascinating field of research.     

用氢化丁腈橡胶制作橡胶密封制品

阐述了氢化丁腈橡胶的基本性能;通过对硫化体系、碳黑补强剂、防老剂等进行选择性试验,确定了橡胶配方;通过工艺试验,确定了产品加工工艺条件;产品性能试验及应用结果表明：氢化丁腈橡胶具有良好的耐热、耐油、耐臭氧性能和低压缩永久变形性,其性能与氟橡胶相近;用氢化工腈橡胶可替代氟橡胶制作汽车发动机曲轴油封。     

用氢化丁腈橡胶制作橡胶密封制品

阐述了氢化丁腈橡胶的基本性能;通过对硫化体系、碳黑补强剂、防老剂等进行选择性试验,确定了橡胶配方;通过工艺试验,确定了产品加工工艺条件;产品性能试验及应用结果表明氢化丁腈橡胶具有良好的耐热、耐油、耐臭氧性能和低压缩永久变形性,其性能与氟橡胶相近;用氢化丁腈橡胶可替代氟橡胶制作汽车发动机曲轴油封.     

Using mesoporous silica materials to immobilise biocatalysis-enzymes

Biocatalysis could gain an enhanced breakthrough with the introduction of novel mesoporous silica materials as enzyme carriers: the dimensions of most of the enzymes are within the pore size range of these new silica materials and a broad spectrum of enzymes can be immobilised. These materials moreover have (i) a uniform pore size distribution, (ii) a high specific surface area and pore volume and (iii) are easy to functionalise. This paper introduces fundamental aspects and techniques to immobilise enzymes on a carrier.     

拭巾带来清洁方式的变革

拭巾产品目前已成为人们家庭以及零售环境中的一个重要部分.Euromonitor调查显示,拭巾产品已经发展成为一个全球性的商业概念,到目前为止销售额已超过50亿美元.该产品以两位数的速度逐年增长,目前已在家庭护理及个人护理市场中扮演重要角色.     

Using the microstructure and mechanical behavior of steel materials to develop a new fire investigation technology

In the study, an A36 steel board, a frequently used building construction material, was heated to a high temperature, and then a metallographic replication experiment and tensile experiment were performed to obtain the composition and proportion of the microstructure and the mechanical behavior of fire‐damaged steel boards. When the steel board was heated to 800°C or higher and then rapidly water cooled, significant changes were found in its composition and proportion. More specifically, pearlite was completely lost, ferrite was reduced from 80% to 30%, bainite was increased to 30%, and martensite was also increased to 40%. The significant increase in the martensite phase altered the structure of the fire‐damaged steel board by making its structure more delicate and loose. Even though the yielding strength and tensile strength showed a tendency to increase, element ductility dropped from 32.5% to 15%. Reducing the extensibility substantially can make the steel board more likely to crack suddenly. The aim of the study is using changes in the structure and mechanical behavior of these steel components because of high‐temperature burning to reconstruct fire spread in fire investigation technology.     

改性铁炭微电解材料的制备

在传统的微电解材料中,添加一定量的MnO_2进行改性,并且用膨润土作为连结剂,采用热固焙烧的方法制备了一种新型铁炭微电解材料。并将其用于对40 mg/L罗丹明B模拟废水溶液进行处理。研究了MnO_2加入量、膨润土加入量、停留时间、铁炭质量比对污染物处理效果的影响。结果表明,当铁炭质量比为4∶1,MnO_2含量为10%,膨润土含量为20%,停留时间为2 h时,处理效果最好,COD去除率达到53%,色度去除率达到80%。     

改性铁炭微电解材料的制备

在传统的微电解材料中,添加一定量的MnO2进行改性,并且用膨润土作为连结剂,采用热固焙烧的方法制备了一种新型铁炭微电解材料.并将其用于对40 mg/L罗丹明B模拟废水溶液进行处理.研究了MnO2加入量、膨润土加入量、停留时间、铁炭质量比对污染物处理效果的影响.结果表明,当铁炭质量比为4:1,MnO2含量为10％,膨润土...     

蒙脱土改性催化材料的研究进展

改性蒙脱土是一种用途广泛的催化新材料。分别介绍了酸化蒙脱土酸催化剂、交联蒙脱土催化剂、蒙脱土中孔异构催化材料等的制备、结构及催化应用研究。