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水下金属构件的水性无机富锌涂料防腐处理 总被引:2,自引:0,他引:2
水性无机富锌涂料的防腐处理兼有热喷锌、铝,以及涂覆有机富锌涂料的优点。以江苏省淮海农场水下金属构件的水性无机富锌涂料防腐处理为例,介绍了构件的前处理,分析了涂装过程中涂膜出现开裂的原因、涂膜的干燥和固化条件以及配套面漆的选用。 相似文献
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总结了水性无机富锌涂料的种类、机理以及现状和发展趋势。介绍了水性无机富锌涂料的施工及配套涂层体系的特点和耐腐蚀性能。 相似文献
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硅烷偶联剂对无机富锌涂料的作用机理探讨 总被引:1,自引:0,他引:1
采用硅烷偶联剂对醇溶性无机富锌涂料进行改性,使涂料的成膜能力和涂膜的柔韧性得到大幅度提高,获得了兼具优异施工性能、机械性能和防腐蚀性能的无机富锌涂膜。另外,还从分子结构的角度对硅烷偶联剂的作用机理进行了解释。 相似文献
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Marco Antonio Lacerda-Abreu Thais Russo-Abraho Jose Roberto Meyer-Fernandes 《International journal of molecular sciences》2020,21(23)
Inorganic phosphate (Pi) is an essential nutrient for the maintenance of cells. In healthy mammals, extracellular Pi is maintained within a narrow concentration range of 0.70 to 1.55 mM. Mammalian cells depend on Na+/Pi cotransporters for Pi absorption, which have been well studied. However, a new type of sodium-independent Pi transporter has been identified. This transporter assists in the absorption of Pi by intestinal cells and renal proximal tubule cells and in the reabsorption of Pi by osteoclasts and capillaries of the blood–brain barrier (BBB). Hyperphosphatemia is a risk factor for mineral deposition, the development of diseases such as osteoarthritis, and vascular calcifications (VCs). Na+-independent Pi transporters have been identified and biochemically characterized in vascular smooth muscle cells (VSMCs), chondrocytes, and matrix vesicles, and their involvement in mineral deposition in the extracellular microenvironment has been suggested. According to the growth rate hypothesis, cancer cells require more phosphate than healthy cells due to their rapid growth rates. Recently, it was demonstrated that breast cancer cells (MDA-MB-231) respond to high Pi concentration (2 mM) by decreasing Na+-dependent Pi transport activity concomitant with an increase in Na+-independent (H+-dependent) Pi transport. This Pi H+-dependent transport has a fundamental role in the proliferation and migratory capacity of MDA-MB-231 cells. The purpose of this review is to discuss experimental findings regarding Na+-independent inorganic phosphate transporters and summarize their roles in Pi homeostasis, cancers and other diseases, such as osteoarthritis, and in processes such as VC. 相似文献
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随着高新技术的发展,人类需要不断地开发无机新材料。在无机新材料的开发中,表面活性剂因其所具有的活性,正在得到十分广泛的应用,并且不断向高科技方面的应用发展。 相似文献
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本研究使用逆絮凝法制备天然橡胶,分别选用酸凝固剂、无机盐凝固剂、无机盐复合凝固剂进行研究,并探讨了絮凝条件对天然橡胶性能的影响因素。结果表明:酸作为凝固剂时,硫酸的絮胶效果比醋酸、甲酸好,三者物理性能相差不大。无机盐作为凝固剂时,使用氯化钙絮胶效果良好,当氯化钙质量分数为2%时,得到的天然橡胶性能基本与参比样云标、烟片胶性能相当。无机盐复配作为凝固剂时,使用氯化钙/氯化钠凝固剂时絮胶效果良好,得到的天然橡胶性能优越于参比样云标、烟片性能。适当提高温度及搅拌速度,均有利于天然橡胶的絮凝。 相似文献
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无机添加剂对铅蓄电池负极板稳态过程的影响 总被引:1,自引:0,他引:1
通过稳态极化法研究无机添加剂对铅蓄电池负极板稳态过程的影响。研究发现:铅负极在氧化时,出现纯化现象。有添加剂存在时,其纯化参数I(纯)、I(w)、Φ(纯)均发生改变;同时添加剂的存在也使负极板阳极过程的表观动力学参数i^0和β发生了改变。 相似文献