The formation of self - assembled interfacial n - dodecanethiol monolayer and its effect on the corrosion protection of epoxy coating were evaluated using the x - ray photoelectronic spectroscopy , electrochemical impedance spectroscopy , impedance - time transition , and phase angle - time transition method 采用x射线光电子能谱、电化学阻抗谱、阻抗时间谱和相位角时间谱等方法对硫醇自组装界面层及其对涂层腐蚀防护性能的影响进行了研究。
Ease radial leaded , epoxy dippeded multilayer ceramic capacitors are build by superior moisture and shock resistant epoxy coating can be supplied in bulk or taped reel package for automatic insertion in pcb , our rd series capacitors have wide applications in computer , data processing , telecommunication , industrial control and instrumentation equipment , etc 立式引线，多层陶瓷电容密封于环氧树脂中，耐温，耐撞击，有塑胶袋散装，编带圆盘装几种包装， rd系列电容广泛应用于电脑，数据处理，通讯设备以及各种仪器设备中。
The result of corrosion research in nacl solution show that epoxy coating steel strand ’ s anti - corrosion is the best . bare steel strand ’ s corrosion speed is the quickest in 5 % nacl solution , slower in 20 % nacl solution ; galvanized steel strand ’ s corrosion rate is largest in 3 % nacl solution , smaller in 20 % nacl solution , the smallest in 5 % nacl solution . epoxy coating steel strand ’ s corrosion speed has the maximum in 20 % nacl solution and the minimum in 5 % nacl solution 2 、 nacl溶液中腐蚀实验研究表明,环氧涂覆钢绞线耐蚀性最好,不同浓度nacl中,全裸钢绞在浓度为5 %的nacl溶液中腐蚀最快, 20 % nacl其次;镀锌钢绞线在5 % nacl溶液中腐蚀速度最慢, 3 %的nacl溶液中,腐蚀最快;环氧钢绞线在浓度为5 % nacl溶液中腐蚀最快, 20 %的nacl溶液中腐蚀最慢。
In this paper , the filiform corrosion images of aa6016 - t4 aluminum alloy beneath an epoxy coating were detected and picked out from the image background with digital image processing technique , and some parameters such as corrosion area density , corrosion propagating speed , and projective value of filiform corrosion vertical to the scratch , were calculated from the processed filiform corrosion image , which were probed to evaluate the propagating status of filiform corrosion effectively and reasonably 摘要运用数字图像处理技术检测、提取了涂覆环氧树脂的aa6016铝合金丝状腐蚀图像，分析探讨了由丝状腐蚀图像所得到的腐蚀面积密度、腐蚀扩展速度以及垂直于切口方向投影值等参数对评估丝状腐蚀发展状况的有效性及合理性。
An inductor whose case has been formed via a molding process , common molding processes in clu - de injection and transfer molding , molded inductors typically have well defined body dimensi - ons which consist of smooth surfaces and sharper coners as compared to othercase types such as epoxy coated and shrink wrap coatings ( also see inductor 外壳以铸型掉程所成形之电感，通常铸型制程包括射出及转移铸型两种，与其他型式之电感如环氧权脂包覆的电感及伸缩套管之电感比较起来，铸型电感常有很明确的尺寸，平滑的表面及尖锐的边角。
Compared to bare steel strand , galvanized steel strand ’ s anti - corrosion is worse in 3 % nacl solution . 3 . the result of corrosion research in different ph value simulation acid rain show that bare steel strand has a low corrosion rate at ph = 4 , corrosion rate at ph = 2 and ph = 6 is larger ; epoxy coating steel strand ’ s corrosion current intensity decrease with ph value ’ s minish ; reverse to epoxy coating steel strand , galvanized steel 3 、模拟酸雨中腐蚀研究结果表明,在不同ph值的模拟酸雨中,全裸钢绞在ph = 4时腐蚀最慢, ph = 2时腐蚀最快, ph = 6时腐蚀速度居中;环氧钢绞线腐蚀电流密度随ph值的减小而减小;镀锌钢绞与环氧钢绞线刚好相反,腐蚀电流密度随ph值的减小而增加, ph值越小,腐蚀电流密度越大,越容易遭受腐蚀。
The results showed that the creep coefficients in cfrp - confined concrete columns and in epoxy - coated concrete columns are almost same , both are less than that in plain concrete columns on the same other conditions but surface treatment , which demonstrates that the creep reduction in cfrp - confined concrete columns is due to the existence of epoxy coating not of cfrp sheet . furthermore , the physical apperence and dimension have litter effect on the creep behavior of cfrp - confined and epoxy - coated concrete columns 结果表明:其他条件相同时, cfrp约束混凝土柱与涂胶混凝土柱的徐变基本一致,比素混凝土柱徐变小29 . 0 %和26 . 9 % 。 cfrp约束混凝土柱的徐变减小是由于粘贴cfrp布时的胶层所致而非核心混凝土的约束效应。 cfrp约束或表面涂胶的混凝土柱的外形、尺寸及体表比对其徐变的影响很小。
At present , the experi - mental research for structures strengthened with cfrp focuses on the bending and shearing etc , but the creep research is limited . aimed at the situation , the paper complete several aspects as following : ( 1 ) long - term test on ten concrete columns with three different surface treatment of coat free , epoxy coated and cfrp sheet wrapped were completed . the creep properties of those concrete columns were studied 目前国内对于碳纤维加固结构的试验研究主要集中在抗弯、抗剪等短期性能方面,而对其徐变性能研究十分有限,针对这种情况,本文主要完成了以下工作: ( 1 )完成了10个不同表面处理混凝土短柱的徐变试验,研究了长期荷载作用下不同表面处理轴心受压短柱的徐变发展规律。
The recent application situation and typical cases of external fusion bonded epoxy coating of buried steel pipelines are described and analysed , from which some suggestions of the design and construction of external fusion bonded epoxy coating are put forward as follows : management of the pipeline project should be strengthened to guarantee the quality of coating ; external fusion bonded epoxy coating should be preferred in flat open country ; space between cathodic protection stations can be reduced suitably in the mountainous and rocky area to attain the best protection effect 摘要综述和分析了近几年埋地长输管道环氧粉末涂层的应用现状和典型实例，并由此提出了环氧粉末涂层在设计、施工中的一些改进建议：加强管道建设的管理；在平原地带可优先选用环氧粉末涂层；在山区石方段可适当减少阴极保护站的间距。
