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Polyaniline/Attapugite/PE(PAn-ATTP/PE)composites containing particles with core-shell structure were obtained via the two-step blending processs. The experimental condition is as follows: Organo-attapulgite and PAn was obtained by modifying attapulgite with laury benzenesulfonic acid sodium salt and, then added to PE. The electrical conductivity, structure and properties of the composites were studied. Under the function of shear stress, core-shell structure particles with ATTP as the core and PAn as the shell were formed in the composites. The structure of PAn-ATTP/PE composites were characterized by FTIR,XRD,SEM, etc, respectively. The effects of concentration of doping agent on the conductivity and mechanical property of the composites were investigated. The mechanical properties and impact fracture surface of the ternary composites were studied by means of the tensile tester, SEM, etc. The results show that polyaniline encapsulated ATTP enhances the strength of the PE. And the conductivity of PAn-ATTP/PE composites of is improved effectively when polyaniline encapsulated ATTP is added. The composite have good conductivity when 10% polyaniline encapsulated ATTP is added. 相似文献
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采用电化学辅助自组装法(Electrochemically assisted self-assembly,EASA)在304不锈钢(304SS)电极上制得二氧化硅(SiO_2)薄膜,然后以循环伏安法(CV)在其上制得了具有防腐性能的聚苯胺/二氧化硅(PANI-SiO_2)薄膜。通过透射电镜(TEM)研究了SiO_2薄膜的孔径,采用扫描电镜(SEM)研究了复合薄膜的形貌,采用Tafel极化曲线、电化学交流阻抗(EIS)研究了复合薄膜在5%氨基磺酸(SA)溶液中的耐蚀性能。结果表明:制得的SiO_2孔径约为2.5nm,相对于聚苯胺,复合薄膜排列较为规则,具有较高的腐蚀电位(-0.248 V)和较低的腐蚀电流密度(1.505×10~(-5) A·cm~(-2))。 相似文献
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目的 解决隐身飞机在飞行过程中因吸波贴片自身过重产生巨大的飞行成本,吸波贴片在飞行条件下易产生划痕、损伤、材料损耗快,以及因修复工序复杂、耗时长产生大量维护费用等问题。方法 应用TRIZ理论进行分析求解,通过采用功能模型分析、因果分析等找到航空航天用吸波贴片成本高的关键缺陷,利用技术矛盾分析、物理矛盾分析、物场模型及标准解、小人法等工具得到多个解决方案。经过综合评估最终找到经济、易于实现的解决方案。结果 通过运用TRIZ理论,并且通过综合评价找到了减少吸波贴片成本的最优方案:吸波贴片中的吸波体由掺杂杂原子的石墨烯构成了多孔结构,增加了其吸波性能;再将材料与自愈合材料相结合,增加其自愈能力,从而得到吸波性能好、质量小、自愈合能力强的吸波贴片。结论 文中得出的结果对减少隐身战机吸波贴片成本的研究具有一定的理论指导意义,有助于减少高集成设备过多对人类及环境产生的危害。 相似文献
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KOH—K2CO3活化废弃焦粉制备活性炭的研究 总被引:3,自引:0,他引:3
采用KOH-K2CO3复合活化剂,对废弃焦粉在不同活化剂与焦粉比、活化温度、活化时间、粒径大小等工艺条件下进行正交实验,得出影响制备焦粉活性炭的主次因素为活化温度、活化剂与焦粉比、粒径大小、活化时间;制备焦粉活性炭的最优方案为活化剂与焦粉比6:1,活化温度850℃,活化时间100min,粒径大小<0.05mm.制备的焦粉活性炭其比表面积为303m#/g,总孔、中孔、微孔容积分别为0.392 4cm3/g、0.215 9cm3/g、0.143 1cm3/g.焦粉活性炭有利于吸附相对分子量较大的物质. 相似文献
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