热加工条件下金属保护涂料的制备及热失重分析  

Preparation and Thermogravimetric Analysis of Metal Protective Coatings under Hot Working Conditions

作　　者：郭占兵 黄蓓 Guo Zhanbing;Huang Bei(Physical and Chemical Testing Center,Aecc Southern Industry Co.,Ltd.,Zhuzhou Hunan 412002,China;Aecc Southern Industry Co.,Ltd.,Zhuzhou Hunan 412002,China)

机构地区：[1]中国航发南方工业有限公司理化测试中心,湖南株洲412002 [2]中国航发南方工业有限公司,湖南株洲412002

出　　处：《山西冶金》2024年第7期35-37,共3页Shanxi Metallurgy

摘　　要：为了增强金属涂料的防腐效果,在温度为25℃的条件下,将硫化的硅橡胶与甲基硅油作为主要原料,并添加膨胀性防火剂、硅烷偶联剂、碳酸钙、氢氧化铝纳米粒子和玻璃纤维等辅料,设计了一种用于金属热加工过程中的保护性涂层。结果显示,当环境温度为1000℃时,使用第3种配方处理的金属表面形成的氧化层最薄,厚度仅为8μm;当环境温度上升至1100℃时,3种配方的涂层都不再起作用。由同等条件下,配方3所受的应力应变相较于其他两种配方在多数时间下要大,随着配方的改善,配方3较配方1和配方2的弹性模量分别提高了109.5%、47.9%,而配方3在拉伸强度上较配方1和配方2分别提高了290.8%、113.7%,表明涂层对金属表面的吸附力足够抵抗外部拉力。In order to enhance the anti-corrosion effect of metal coatings,a protective coating for metal hot processing was designed under the condition of 25℃,using vulcanized silicone rubber and methyl silicone oil as the main raw materials,and adding auxiliary materials such as expanding fire retardant,silane coupling agent,calcium carbonate,aluminum hydroxide nanoparticles,and glass fiber.The results show that when the ambient temperature is 1000℃,the oxide layer formed on the metal surface treated with the third formula is the thinnest,with a thickness of only 8μm.When the ambient temperature rises to 1100℃,the coatings of all three formulations no longer work.Under the same conditions,formula 3 experiences greater stress and strain compared to the other two formulas for most of the time.With the improvement of the formula,the elastic modulus of formula 3 has increased by 109.5%and 47.9%respectively compared to formula 1 and formula 2,while the tensile strength of formula 3 has increased by 290.8%and 113.7%respectively compared to formula 1 and formula 2,indicating that the adsorption force of the coating on the metal surface is sufficient to resist external tension.

关 键 词：热加工 金属 涂料 防腐 热失重 

分 类 号：TG174.4[金属学及工艺—金属表面处理]