低温可逆示温涂料及性能的研究

介绍了以Ag2HgI4为变色颜料,不同的无机材料作为填料,研制成低温可逆示温涂料的工艺流程;通过该系列示温涂料的变色温度、复色时间等性能实验,探讨了不同类型的填料对示温涂料性能的影响,并确定了最佳配方。     

低温可逆示温涂料的研究

采用镍盐（ＮｉＣｌ２·２Ｃ６Ｈ１２Ｎ４·１０Ｈ２Ｏ） 作为变色物质,无机非金属材料（ＳｉＯ２ 、ＣａＯ、ＭｇＯ、Ａｌ２Ｏ３ 粉末）作为填料,研制成低温可逆示温涂料。介绍了该示温涂料的工艺流程。通过填料选择,变色温度、复色时间的试验,以及涂料的性能检测,确定了最佳的涂料配方     

水性低温可逆示温涂料的研究

采用钴盐(CoCl2@2C6H12N4@10H20和CoCl2@6H2O)为变色颜料,改性PVF-Na2SiO3复合物为成膜物,无机非金属材料为填料,研制成水性低温可逆示温涂料.介绍了该涂料的变色机理和制备工艺流程.通过对变色温度和恢复原有颜色的时间,以及涂料性能的检测,确定了涂料的最佳配方.     

含钴低温可逆示温涂料的研究

采用钴盐作为变色材料,无机金属材料作为填料,研制成低温可逆变色涂料,通过对填料选择,变色温度,复色时间的试验及涂料性能的检测,确定最佳涂料配方。     

有机中可逆示温涂料的研究

主要研究以有机染料、显色剂（二苯基硫脲）、减敏剂（酵类）为主要组成物的有机可逆为色示湿涂料，并对其主要组成物－－二苯基硫脲的合成及这种示温涂料的研制与性能测试等作了详细的讨论。     

示温涂料

0506254 低温可逆示温涂料的研究；0506255 新型室温可逆变色涂料。     

示温涂料

0402208可逆热致变色组合物:US2003一121 448[美国专利申请公开]/台湾:(C hen,Peen一Taum等)一2003.7.3一9页一TW90 125 835(2001.10.18):IPCC09Dll/00(106一31.18) 具有耐光性的可逆热致变色组合物含有(a)供电子彩色构成,(b)受电子经基芳香醋,(c)含有醇、醋、醚、酮、拨酸或酸     

低温可逆示温涂料的研究

采用钴铵盐作为变色物质，无机非金属材料（SiO2．CaO，AlO3，河沙粉）作为填料，研制成低温可逆示温涂料，该产品有较高的件价比和实用性。     

示温涂料

热致变色的涂料组合物,一种温度敏感磷光涂层     

示温涂料的原理及应用

介绍示温涂料的一般知识，着重讨论示温涂料的组成，变化机理及应用。     

热致可逆变色涂料的发展

概述了热致可逆变色涂料及可逆变色涂料微胶囊化的发展应用。     

低温可逆热敏示温微胶囊的粒径控制及结构

采用界面聚合法制备了以CoCl2为芯材、聚乙烯醇为壁材的可逆热敏示温微胶囊,系统研究了乳化剂用量、内水相与油相用量比、搅拌速度、内乳液加入方式对微胶囊粒径的影响,并对微胶囊的结构和形貌进行了表征. 结果表明,当Span-80/Tween-80含量为5%(w)、水油体积比为0.2、转速为1200 r/min、内乳液采用逐步滴加方式加入外水相中时,制备的微胶囊粒径均一,平均粒径为12 mm,分散性好.     

示温涂料的应用与发展

简介了示温涂料的定义、分类及其发展过程。并分别从概况、应用范围、使用方法以及发展前景等几个方面讲述了国内外单变色不可逆示温涂料、多变色不可逆示温涂料和单变色不可逆示温贴片的发展情况。同时 ,还介绍了无机可逆示温涂料、有机可逆示温涂料及高分子液晶可逆示温涂料的应用及其发展 ,并通过可逆示温涂料现存的问题展望了其未来发展方向。     

Thiol-ene Reaction as Reversible Covalent Bond for the Design of Shape-Memory Polymers

Besides a stable phase, shape-memory polymers require an additional switchable moiety. In addition to thermal transitions and supramolecular interactions, these units can also be based on covalent bonds. Herein, the use of the reversible thiol-ene reaction as reversible cross-linker for the design of shape-memory polymers is demonstrated. A facile route to polymer networks with a thiol-ene acceptor and a comonomer (butyl methacrylate or 2-ethylhexyl methacrylate) cross-linked by dithiols is introduced. The thermal and mechanical properties of the resulting polymers are characterized in detail. Hereby, the polymers feature excellent shape-memory behavior with fixity and recovery rates above 90%. This study shows that the thiol-ene cross-linker can function as both, the stable and the switchable structural moiety rendering the usage of a covalent cross-linker unnecessary. This partial reversibility can also be proven by temperature-depending Raman spectroscopy.     

Photochemical RNA Editing of C to U by Using Ultrafast Reversible RNA Photo-crosslinking in DNA/RNA Duplexes

RNA editing, which is used to edit nucleobases in RNA strands; is more feasible for use in medical applications than DNA editing. We previously reported the photochemical conversion of cytosine to uracil, which required photo-crosslinking, deamination, and photo-splitting. Here, we evaluated the influence of the bases surrounding the target cytosine on the conversion of cytosine to uracil in the RNA strand. The photo-crosslinker 3-carboxyvinylcarbazole(^OHVK), which is more hydrophilic than 3-cyanovinylcarbazole(^CNVK), 3-carboxyamidevinylcarbazole(^NH2VK), and 3-methoxy carbonylvinylcarbazole(^OMeVK), induced faster deamination of cytosine. Furthermore, inosine, which forms two hydrogen bonds with cytosine, was the most efficiently paired base for accelerating photochemical RNA editing. Upon evaluation of the conversion from cytosine to uracil in RNA, the use of oligodeoxynucleotides containing ^OHVK and inosine and the polarity of the bases surrounding the target cytosine were found to be crucial.     

可逆感温变色聚丙烯专用料的制备及性能

通过两步法制备可逆感温变色聚丙烯（PP）专用料,首先将乙烯-辛烯共聚物（POE）与可逆感温变色粉于微型双螺杆挤出机中挤出造粒制备色母料,然后将PP与色母料熔融共混挤出制备可逆感温变色PP专用料。探讨了色母料含量对PP专用料感温变色性能、力学性能、热学性能及微观形貌的影响。结果表明,利用POE与PP良好的相容性,实现了可逆感温变色粉在PP基体中均匀的分散,可逆感温变色PP专用料表现出优异的可逆感温变色性能和冲击性能。     

可逆加成-断裂链转移(RAFT)聚合的研究进展

自可逆加成-断裂链转移自由基聚合技术在1998年发明以来,就逐渐成为聚合研究者的一种非常强大的合成工具,并在研究与应用领域得到很快的发展。文章综述了可逆加成-断裂链转移聚合的RAFT试剂的分类、聚合机理及聚合中的阻滞现象,简要说明了RAFT技术应用的研究进展。     

Properties of Acetylated Wood Prepared at Low Temperature in the Presence of Catalysts

Abstract

In the presence of catalysts such as sodium acetate, zinc chloride, magnesium perchlorate, and magnesium chloride hexahydrate, acetylation of wood at 75°C was investigated. The results showed that it was possible to endow wood with high dimensional stability at low temperature by a catalyzed acetylation method. In particular, the magnesium chloride–catalyzed acetylation of wood showed very little or no effect on the color change or mechanical property of wood, as contrasted to those of the zinc chloride or magnesium perchlorate–catalyzed treatment, which showed a great effect. In addition, the concentrations of catalysts proved to have an effect on weight percent gain.     

基于冷换设备的Ni-P化学镀应用研究

以冷换设备为基体,采用低温液相化学镀法制备了耐腐蚀N i-P合金镀层,处理后的镀层为典型的非晶态结构,具有良好的耐蚀性,能够满足碳钢材料冷换设备表面防腐的要求,并制定了制备冷换设备用镀层的工艺方法。     

热处理温度对有机添加剂硬铬镀层性能的影响

研究了热处理温度对有机添加剂硬铬镀层性能的影响。经过200－300℃、1h热处理后的镀层,其硬度有了明显的提高,同时耐磨性也得到改善,但硬度和耐磨性的最优点对应着不同的热处理温度。对镀层的XPS分析表明,这是由于镀层中的有机碳化物,经热处理后析出所致。镀层的EDAX分析表明,热处理使镀层表面氧含量增高,但对镀层微裂纹数量和宽度没有明显影响。由XRD实验结果可知,热处理后镀层的晶体 结构未发生改变。