导电高分子聚苯胺及其应用

聚苯胺 (PANI)是研究最为广泛的导电高分子材料。本文介绍了导电高分子的掺杂原理和常用方法 ,以及PANI的结构与性能 ,综述了PANI的一些主要应用研究和领域     

一些导电高分子研究的新进展

综述了近年来国际上导电高分子,尤其是可溶性导电高分子的研究进展。介绍了聚噻吩、聚吡咯、聚苯胺等几类热门研究的导电高分子的发展状况。     

导电聚苯胺的特性及应用

聚苯胺是导电高分子化合物中的一个极有应用前途的高分子材料。木文旨在介绍导电聚苯胺的各类特性及各个方面的应用前景。     

聚合方法对聚苯胺导电性能的影响

采用溶液聚合与乳液聚合两种方法分别合成了导电高分子材料聚苯胺（ＰＡｎ）并对其性能进行了比较研究,实验结果表明,不同的聚合方法影响聚合物的产率,溶解度,分子量,导电性,环境稳定性以及微观结构等性能。     

导电聚苯胺材料的乳液聚合研究进展

认为乳液聚合法是改善聚苯胺可加工性的一条有效途径，并介绍了当今若干新兴的乳液聚合法在制备导电高分子方面的运用，对其中已实步用于制备聚苯胺的微乳液聚合、核壳乳液聚合等几种乳液聚合方法进行了较全面的阐述。     

高电导率聚苯胺

聚苯胺是导电离分子化合物中一个极有应用前途的功能高分子材料，而阻碍其应用前景的主要有两个方面：其一是不溶不熔，其二是电导率较低。本实验采用新的掺杂方法，得到机械强度、溶解性、电导率均高于传统各类合成方法的导电聚苯胺。     

导电高分子材料聚苯胺及其开发前景

就导电高分子材料聚苯胺的电化学聚合、化学合成、聚合物结构、聚合物的特性及其应用等予以综述；结合科研实践提出了聚苯胺在防腐、防污领域中的开发前景。     

导电聚合物的合成与应用

本文简要的介绍了导电高分子的发现、分类和导电机理,并选取其中应用广泛的三种聚合物:聚噻吩、聚吡咯和聚苯胺作详细介绍,并介绍了这三种聚合物的主要合成方法及一些主要的应用,最后展望高分子的未来。     

聚苯胺的合成及改性研究现状

聚苯胺(PAn)是研究最为广泛的导电高分子材料之一。本文综述了聚苯胺的结构、合成方法及其改性问题,介绍了聚苯胺的应用及发展方向。     

共轭导电高分子/纳米纤维素复合材料研究进展

以纳米纤维素为基体材料、共轭导电高分子为功能材料,制备的共轭导电高分子/纳米纤维素复合材料兼具共轭导电高分子良好的导电性能以及纳米纤维素易改性、易成膜、可降解等优良特性,由此而拓宽了二者的开发与应用范围,并促进了导电高分子复合材料的发展。综述了几种典型的共轭导电高分子/纳米纤维素复合材料的研究进展,介绍了聚苯胺/纳米纤维素复合材料、聚吡咯/纳米纤维素复合材料和聚噻吩/纳米纤维素复合材料的制备及应用。     

Effect of Permeable Crystalline Material on Steel Reinforcement Corrosion of Concrete

Permeable crystalline materialcan permeate into pores and cracks of concrete and catalyze the reaction between Ca(OH) 2and unhydrated cement to generate a great quantity needle non-soluble crystals, which can stop up the pores and cracks of concrete, and increase the impermeability of concrete. This paper reported the results of a study conducted to evaluate steel reinforcement corrosion of concrete specimens uncoated and coated with permeable crystalline material as well as mixed with the permeable crystalline material. The properties evaluated for corrosion test were water impermeability, water absorption, compressive strength and potential. The results of water impermeability, water absorption, compressive strength clearly showed that the permeable crystalline material could prohibit water, any soluble salts and moisture from penetrating the concrete to cause corrosion, leaking, and other problems, and it did increase the compressive strength, which was favorable for protection of corrosion of reinforcing steel. Moreover, it was concluded from the potential-time curve that the steel reinforcement of uncoated specimen was in the state of activation whereas that of other specimens coated and mixed with the permeable crystalline material was in the state of inactivation. Above all, it was indicated that the permeable crystalline materialis very effective to protect the steel reinforcement of concrete from corrosion.     

The Research and Application About "Dry Peeling Off" Technology for Airplane Surface Paint Layer

In this paper, the principle of spurting take off lacquer were introduced; and with orthogonal method the unsaturate polyester was prepared ;it was easy to peel airplane paint layer off with this material and equipment.     

Quality Study of Honeycomb Core Shaping Without Wax Stabilization

Sandwich panels utilizing honeycomb cores result in lightweight, high-strength units that are very rigid. Indeed, they give honeycomb panels the best strength-to-weight ratio of any construction type available. Conventionally, the wax is poured into the cell of the core to strengthen the structure and prevent the core from being crushed during milling. Much time and labor is required to wax, mill, and clean the cores. In this study, the process of pouring wax into the core was skipped. In other words, the cutter directly milled the core. Experiments showed that the compressive strength of the core produced without wax stabilization was only 3% lower than that of cores produced using the traditional method. In addition, the drum peel strengths of cores produced without wax stabilization were 38.4% higher than cores produced using the traditional method, in which residual wax seriously polluted the adhesive. It was also found that eliminating the wax process can reduce costs.     

In-process thermal treatment of polylactic acid in fused deposition modelling

Polylactic acid (PLA) is one of the most widely used open source fused filament fabrication materials due to its ease of extrusion, biodegradability, and mechanical strength. The mechanical strength of PLA largely depends on the proper growth of its semi-crystalline structure, which can be severely impaired by a low rate of crystallization, particularly in open source printers. This can be further aggravated by the non-uniform thermal distribution of heat that causes improper curing among the extruded beads of the printing material. As a result, PLA printed on open source printers does not achieve the best mechanical properties. This research, for the first time, proposes an additive-free solution implemented through a detailed set of experimentation to improve the curing rate through in-process temperature variations to cure the joints among the beads. Scanning electron microscopy (SEM), differential scanning calorimetry (DSC) and Fourier transform infrared (FTIR) spectroscopy is used to confirm the improvements in the bead joints. This work is conducted in two phases of experiments. In the first phase, a full factorial ANOVA is used to investigate various process parameters and the important variables are used in the second phase to print test specimens in four different sets.     

Investigation of the Corrosion Behaviors of HVOF-Sprayed Carbide Cernet Coatings in Molten Al-Zn-Si Alloy Bath

In continuous hot-dip galvanization process the corrosion and chemical stability of the sink roll in the galvanizing bath are important problem which effects on the quality and productivity. In order to protect the sink roll the carbide cermet and/or ceramic coatings were deposited on the surface of the sink roll. The WC-, Cr3 C2-cermet coatings were deposited by high velocity oxygen fuel (HVOF) spray, respectively. The coating samples were immersed in molten Zn-alloy containing 50 wt % aluminum at 833 K for 24 hr and 144 hr, respectively. The inter-diffusion and inter-reaction of Zn, Al and elements in coating and corrosion behaviors of these coatings were investigated by XRD, SEM and EPMA etc. The corrosion mechanisms of the carbide cermet coatings and ceramic coatings in molten High Al-Zn-alloy were approached.     

Fundamental study of adhesion of ice to cooling solid surface (Discussion on influence of copper oxide layer on ice adhesion force)

In many situations, ice often adheres to a cooling solid surface, frequently causing serious accidents. It is critical to clarify the mechanism of ice adhesion to the cooling surface in order to prevent ice adhesion. In a past study, the shearing stresses of two kinds of test plates with a copper surface having the higher thermal conductivity were measured. The shearing stress corresponds to ice adhesion force. Both shearing stresses were significantly different; however, the cause remains unclear.Therefore, the present study focuses on an oxide layer as the main factor causing the difference of both shearing stresses; the influence of the oxide layer formed on shearing stress was discussed. And in the removal and reformation processes of the oxide layer, the time variation of the shearing stress was clarified. Moreover, the relationship between the state of the copper surface and the shearing stress was also clarified by surface analysis.     

重塑标准推行格局 推动LED照明的普及（英文）

正When you are enjoying the green,energy-saving and healthy lighting of IKEA LED luminaire,you may not realize that most of IKEA’s LED bulbs are produced by the LED luminaire smart manufacturing system of Hangzhou Zhongwei Photoelectricity CO.,LTD(ZVISION).No longer enclosed in the laboratory,the product standards are brought into the factory workshop and even to the entire production process.Thus,the standards are promoted and applied in a favorable way by enterprises,benefitting consumers with high quality products.     

Chinese Experts Contribute to ISO＇s New Toy Standards

正The international standard,ISO 8124-6,Safety of toys–Part 6:Certain phthalate esters in toys and children’s products,was officially issued by ISO worldwide on August 15.It was the first time for Chinese experts to lead the ISO standard development in toys industry.The standard was drafted by a group of Chinese experts from SAC/TC for toys and relevant Chinese departments and finally completed by a dedicated international group of experts.ISO 8124-6 makes a substantive breakthrough in the aspects of the scope of toys,limitation of plasticizer types,control of test cost,accuracy of test,operation convenience,etc.,offering the operational guidance for toy manufactures and testing laboratories.     

中国质量(北京)大会(英文)

正Themed on"quality,innovation,development",the first China Quality Conference(Beijing)was held in the Great Hall of the People on September 15.Chinese Premier Li Keqiang delivered an important speech at the conference.State Councilor Yang Jing and Wang Yong attended the conference with over 600 domestic and international representatives from foreign,regional and international quality organizations     

National Working Meeting on Land and Resources Standardization

正The National Working Meeting on Land and Resources Standardization was held in Beijing on July 15,2014.Wang Min,the Deputy-Minister of the Ministry of Land and Resources,and Yin Minghan,the Chief-Engineer of SAC addressed the meeting.Representatives from relevant competent departments and technical committees were present.The meeting aims to summarize work,discuss existing problems and make clear working thoughts,promoting standardization work of land and resources to a new level.Wang Min pointed out that the standardization work of land and resources should be centered on the basic principles of"protecting land and resources dutifully,intensively and economically utilizing land and resources,and making all-out efforts to safeguard the public’s rights and interests",highlighted the