石油产品贮罐内壁防静电防腐蚀涂料漆层结构与应用原理

概括介绍了防静电涂料的功能、分类以及石油产品贮罐对防静电涂料的特有要求。分析了漆层结构对罐壁防锈寿命的影响,提出了油罐内壁防静电涂料的配套原则。     

UHMWPE/CNTs导电复合体系的电性能

制备了低逾渗值的超高分子量聚乙烯(UHMWPE)/多壁碳纳米管(CNTs)导电复合材料,CNTs分布于UHMWPE粒子的表面和界面处。研究了UHMWPE/CNTs复合材料的温度电阻行为,发现在基体熔点附近,电阻急剧增加,并达到一最大值,然后电阻开始下降,体现负温度电阻效应(NTC)。分析了复合材料电阻松弛时间的升温速率的依赖性,结果表明,升温速率越快,电阻的松弛时间越短。     

聚苯胺防腐蚀涂料的研制及其性能

聚苯胺涂料具有优异的防腐蚀性能,目前,对它的开发已成为高分子导电材料应用和研究的新热点.为此,制备了本征态聚苯胺质量分数为0,1.5%,3.0%,5.0%,7.0%,10.0%的聚苯胺/环氧防腐蚀涂层,通过Tafel极化曲线及盐雾试验对比了其防腐蚀性能,并运用环境扫描电镜(SEM)观察了涂层的表面微观形貌.结果表明:聚苯胺含量对涂层的防腐蚀性能有较大影响,当涂层中聚苯胺含量较低时,随着聚苯胺在涂层中质量分数的增加,涂层的防腐蚀性能相应提高;随涂层中聚苯胺质量分数的进一步增大,涂层的防腐蚀效果开始下降;涂层中聚苯胺含量为5.0%时具有最佳的防腐蚀性能.     

纳米铜防静电封存材料及性能研究

一些器材在封存中除了要求封存材料不仅具有防腐蚀、防霉功能,还要有防静电的功能。阐述了封存材料防静电原理,研制防静电封存材料,并进行了形貌分析和性能测定。结果表明,该材料不仅具有优异的物理、力学性能,而且具有优良的防静电性能,体积电阻率为1.6×104Ω.cm。     

Embedded Sensors in Rubber and Other Polymer Components

Abstract: Many polymer components are susceptible to catastrophic failure or are critical to the performance of the products they comprise. Because of this, the capability to monitor structural failures or performance reduction in these components is beneficial. It is difficult to fabricate sensors for polymer components because they often have complex shapes or are assembled in isolated locations. To solve this problem, micro‐scale electronic sensors, embedded within polymer components, were developed at Purdue University. Conductive polymer materials were used as the primary sensing element in the sensors. Testing results reveal that embedded sensors in polymer components can successfully indicate significant signal changes more than 100 loading cycles prior to catastrophic failure. Multiple sensing methods and applications have been tested and more are being researched. These findings may open doors for future polymer sensors that can improve safety and provide useful measurements for polymer components.     

Study on inverse spinel zinc stannate, Zn2SnO4, as transparent conductive films deposited by rf magnetron sputtering

Inverse spinel zinc stannate (Zn₂SnO₄, ZTO) films were deposited onto fused quartz glass substrates heated at 800 °C by rf magnetron sputtering using a ceramic ZTO target (Zn:Sn = 2:1). H₂ flow ratios [H₂/(Ar + H₂)] were controlled from 0 to 30% during the depositions. ZTO films deposited at 800 °C possessed a polycrystalline inverse spinel structure. The lowest resistivity of 1.1 × 10^− 2 Ω cm was obtained for a ZTO film deposited at 20% H₂ flow ratio. The transmittance of the ZTO film was approximately 80% in the visible region.     

聚氨酯/纳米石墨微片复合泡沫塑料的制备及导电性能研究

以聚酯多元醇及二苯甲烷二异氰酸酯为基体,以二月桂酸二丁基锡为催化剂,以纳米石墨微片为导电填料,经过灌模固化反应合成了聚氨酯/纳米石墨微片复合泡沫塑料.并观察了其微观结构,分析了其导电性能,在纳米石墨微片的质量分数为14%时出现了渗滤效应.     

软模板法聚苯胺微米管的制备与表征

以同时带有亲水基(-SO3)和疏水基(-C14O14N3)而具有两性分子结构的甲基橙为掺杂剂,利用软模板法制备聚苯胺微米管,通过扫描电镜(SEM)和透射电镜(SEM)对制得的聚苯胺微观形貌进行表征.分别控制盐酸与苯胺的摩尔比为0.5、1.5和2.5,两者摩尔比值为0.5时得到聚苯胺不规则颗粒,两者摩尔比值为1.5和2.5时得到聚苯胺微米管.利用傅里叶红外光谱(FTIR)和紫外-可见光谱(UV-vis)对聚苯胺的分子结构进行表征,结果表明产物是质子化掺杂的聚苯胺,甲基橙阴离子基团(C14O14N3SO3-)已掺杂到聚苯胺分子链中.     

Chemical and electronic interface structure of spray pyrolysis deposited undoped and Al-doped ZnO thin films on a commercial Cz-Si solar cell substrate

We have studied differences in the interface between undoped and Al-doped ZnO thin films deposited on commercial Si solar cell substrates. The undoped ZnO film is significantly thicker than the Al-doped film for the same deposition time. An extended silicate-like interface is present in both samples. Transmission electron microscopy (TEM) and photoelectron spectroscopy (PES) probe the presence of a zinc silicate and several Si oxides in both cases. Although Al doping improves the conductivity of ZnO, we present evidence for Al segregation at the interface during deposition on the Si substrate and suggest the presence of considerable fixed charge near the oxidized Si interface layer. The induced distortion in the valence band, compared to that of undoped ZnO, could be responsible for considerable reduction in the solar cell performance.     

塔里木盆地塔中-巴楚地区侵入体温度场演化特征及其与油气储层的关系

通过对塔中-巴楚地区奥陶系钻遇侵入体的岩石学、地球化学分析以及数值模拟等的详细研究,探讨了其热效应及对碳酸盐岩储层发育的影响。研究发现,塔中-巴楚地区碳酸盐岩中的层状侵入体为紫苏辉长岩和辉绿岩,紫苏辉长岩主要矿物有拉长石和紫苏辉石,副矿物有磷灰石等,辉绿岩主要矿物组合以单斜辉石和基性斜长石为主。地球化学分析表明,辉长岩的SiO₂含量介于44.58%～45.39%,K₂O+Na₂O含量为3.91%～4.67%,Na₂O/K₂O含量比为2.16～4.23,属碱性系列;稀土元素配分模式属轻稀土元素富集型,LaN/YbN比值为5.010～5.980,铕异常参数δEu值为0.910～1.002,Eu负异常很弱甚至没有Eu异常。塔中-巴楚地区层状侵入体热能传输理论模型与计算表明,层状侵入体温度的影响范围是有限的,侵入体对碳酸盐岩储层的热影响范围与其厚度密切相关,厚度越大影响范围越大。