导电涂膜表面微米尺度内痕量CIO-浓度测定方法的研究

简述采用四电极体系,锁相相关测定系统及三维微控装置,测定了电解人造海水在导电涂膜表面微米尺度内痕量C10-浓度的分布,为导电防污涂料研究的关键技术确定导电涂膜表面产生痕量C10-浓度相对应的通电参数作致关重要技术准备。     

导电涂膜表面微米尺度内痕量C1O^1浓度测定方法的研究

简述采用四电极体系,锁相相关测定系统及三维微控装置,测定了电解人造海水在导电涂膜表面微米尺度内痕量C1O^-浓度的分布,为导电防污涂料研究的关键技术确定导电涂膜表面产生痕量C1O^-浓度相对应的通电参数致关重要的技术准备。     

不同表面上的纳米微米层导电聚合物

从本质上说，人们大约在30年前发现了导电聚合物（ICP），但只是在过去的十年来它们的用途才被广泛地开发出来。本文讨论导电聚合物的性能和应用，主要是讨论了聚吡咯沉积在不同基体上的情况。通过在基体如纺织品上涂覆一薄层导电聚合物，产品能够避免许多纯导电聚合物的加工问题。例如，如果在织物上涂覆一层导电聚合物，就能得到坚固、柔韧、弹性较大的易加工导电材料。薄层涂覆物没有改变基础材料的机械性能。     

导电银浆涂膜均匀性和致密性的研究

对固体钽电解电容器用导电银浆涂膜的均匀性和致密性作了分析和讨论，并选用助剂对这两个重要特性进行改善，确定了较合适的防沉剂和消泡剂，优化了涂膜性能。     

硅橡胶表面导电涂层的研究

导电涂料是一种高效、低廉且应用方便的电磁辐射防护材料,具有广泛的应用前景.文章通过物理共混和化学改性方法研究了3种不同树脂并制备涂料,考察了涂料在硫化硅橡胶上的附着效果,分析了不同因素对涂料在硫化硅橡胶上附着力的影响,同时研究了银粉的含量与涂层体积电阻率之间的关系,考察了导电涂层的微观相态结构.附着力测试结果表明以乙烯基硅树脂制备的涂料附着效果好;扫描电镜(SEM)观察结构表明,ω(银粉)为65%时,在涂层中的分布比较均匀致密;导电性能和附着力测试结果表明,ω(银粉)为65%时,涂层体积电阻率较低,附着力最好.     

微米稀土粉体表面改性技术研究

本文采用稀土粒子与蛇纹石粉体组成的微米复合粉体,研究了油酸、Span、硼酸酯对其的表面改性效果,确定了复合改性剂的复配配比为油酸∶Span∶硼酸酯=43.1∶24.1∶32.8。通过实验,得到了较优工艺条件:复合改性剂添加量5.8%,改性温度75℃,改性时间80min。改性后的微米稀土粉体表现出良好的亲油疏水性,提高了其在机油中的分散稳定性。     

用聚乙烯蜡提高涂膜表面性能的研究

本文叙述了通过加入聚乙烯蜡来改善涂料表面性能的方法。分析了聚乙烯蜡与涂膜耐刻划性，消光性的关系，并介绍了蜡的加入方法。     

一种表面活性剂临界胶束浓度测定方法研究

测量吖啶化合物作为发光剂在系列浓度的表面活性剂溶液的化学发光值,根据所得发光值的对数值与其对应的表面活性剂溶液中表面活性剂浓度的对数值进行线性拟合得出若干条拟合直线,相邻两条拟合直线的交点对应的表面活性剂浓度中的最小值即为该表面活性剂的临界胶束浓度.由测定结果可知,十二烷基三甲基氯化铵的临界胶束浓度是11.5 mmol...     

液氧中痕量烃的测定方法

为了准确测定液氧中危险杂质痕量烃的含量。应用气相色谱法,建立了液氧中痕量烃的测定方法。该方法的相对标准偏差小于0. 81%(n=5),回收率99. 4%～100. 4%。该方法具有分析耗时少,操作简便的优点,作为控制液氧质量的分析方法,对指导生产工艺的安全性和稳定性起到了保障作用。     

聚苯胺导电复合膜研究进展

将力学性能好的基质与聚苯胺相复合制备聚苯胺导电复合膜是对聚苯胺改性的重要方法之一。介绍了聚苯胺导电复合膜的主要制备方法,包括机械共混法、溶液共混法、电化学合成法、现场乳液聚合法、现场原位聚合法和现场吸附聚合法。综述了聚苯胺导电复合膜在防静电材料、电磁屏蔽材料、敏感元器件、电致变色材料、可充电电池、分子级电路等方面的应用。     

等离子体诱导下导电高分子复合膜的研究与应用

低温等离子体技术是发展高分子材料的一种重要方法,它可以赋予聚酯薄膜材料表面各种不同性能,如亲水性、粘接性、导电性等,而不改变材料本身所具有的性质。将改性后的薄膜材料与吡咯等物质聚合可以形成具有导电性的高分子复合膜。     

硅橡胶表面导电技术研究

采用氨基接枝共聚技术对硅橡胶表面改性,用10 000cst的107胶、75%的导电粉配制导电涂料涂覆硅橡胶表面,附着力和导电性最佳。     

Preparation of conductive nylon 6 film

Electrically conducting nylon 6 films was prepared by introducing amide group or cyan group into the nylon 6 film and then introducing Cu_xS, which is known as the p-type semiconductor, into the grafted nylon films. The graft copolymerization of acrylamide (AM) and acrylonitrile (AN) onto nylon 6 film was investigated using ceric salt as the initiator. The graft yield was influenced by the concentration of ceric salt, sulfuric acid and monomer, and the reaction time. The optimum conditions for the introducing of Cu_xS were studied. Electrical conductivity of Cu_xS-treated nylon film was found to be higher by order of 10⁹ than that of the original nylon 6 film, and then properties of the resulting modified films were investigated.     

Easy conversion process of titanium surface covered with passive film into functional surface

Surface functionalization of titanium metal is of great interest, especially as the conversion of the surface passive film into objective functional film can be widely used in bio- and environmental applications. However, since the surface passive film is very stable, the functionalization (such as conversion into photocatalytic anatase-TiO₂) has been performed using relatively complicated processes, for example, hydrothermal reaction and anodic oxidation. This is because direct oxidation of titanium metal only leads to thermodynamic formation of octahedral-rutile-TiO₂ in the entire temperature region, while chemical synthesis using precursors can easily produce tetrahedral-anatase-TiO₂ at 600°C or less. Here, we report a simple process for the direct formation of photocatalytic anatase-TiO₂ on titanium by simple oxidation. In the first step in our process, titanium is treated with a reducing agent to create a surface titaniumhydride layer. After that, the treated titanium covered with titaniumhydride is immerged in aqueous silica; subsequent calcination at 900°C (specific temperature) in air effectively generates the surface anatase-TiO₂ layer. This is because the covered tetrahedral-silica stabilizes the anatase structure that is formed. The covered silica is easily removed by quenching in water to reveal the photocatalytic surface layer composed of anatase-TiO₂.     

Carrier generation within the surface region of hydrogenated thin film polycrystalline diamond

Low temperature Hall effect measurements made on diamond films subjected to a hydrogenation process, such that the near surface region becomes p-type without the addition of conventional dopant atoms, are reported. The carrier concentration within the temperature range 10–300 K does not change as expected for most films, actually increasing as the temperature falls. However, polished films display more conventional behaviour in that the carrier concentration falls with falling temperature. A model involving carrier transport within both valance and impurity bands can be considered to explain these observations, leading to the suggestion that the hydrogenation process is capable of creating acceptor states with an activation energy within the range of 10–40 meV.     

双向拉伸聚酯薄膜表面缺陷分析

通过采用薄膜在线表面缺陷检测设备、正交偏光测试仪和电子显微镜对双向拉伸聚酯薄膜表面缺陷进行研究,分析了各种表面缺陷的形貌特征和形成原因,并提出了相应的解决方法。     

两相溶胶－凝胶法制备微米二氧化硅

采用两相溶胶-凝胶法,以正硅酸乙酯、氨水、乙醇、水、微量电解质为原料,制备出微米级单分散性二氧化硅微球,着重研究了微量电解质加入量、加料时间、加料方式、不同溶剂配比对二氧化硅微球粒径的影响.结果表明,二氧化硅微球粒径随着电解质浓度的增大先减小后增大;随着加料时间的延长,二氧化硅微球粒径逐渐增大;连续加料比间歇加料制得的二氧化硅微球单分散性好;溶剂类型对二氧化硅微球粒径有很大影响,通过不同溶剂配比调控二氧化硅微球粒径,最终制备出单分散性好的微米二氧化硅微球.     

铝基氧化膜内粒子电沉积及其功能膜的研究进展

由于铝阳极氧化膜的特殊结构,再加上其制备的功能膜具有一系列独特性能。因此,近年来受到国内外广大科研工作者的广泛关注。本文从溶液组成综述铝基膜内单一粒子和复合粒子电沉积工艺,从电源波形介绍直流、交流和脉冲电沉积工艺,另外也叙述了溶胶凝胶和超声波电沉积工艺。列举了用电沉积方法制备功能性薄膜在催化、光学、太阳能吸收膜以及磁学领域的应用,并对制备功能性氧化膜存在问题与发展方向进行阐述。