原油环境下螺杆泵定子材料的化学损伤  

Chemical damage of screw pump stator material in crude oil environment

作　　者：李鸿泰 王超[1] 张子成 谈金祝[1] LI Hong-tai;WANG Chao;ZHANG Zi-cheng;TAN Jin-zhu(School of Mechanical and Power Engineering,Nanjing Tech University,Nanjing 211816,China)

机构地区：[1]南京工业大学机械与动力工程学院,南京211816

出　　处：《合成橡胶工业》2023年第6期482-487,共6页China Synthetic Rubber Industry

摘　　要：以氢化丁腈橡胶为原材料制备了螺杆泵定子材料,通过模拟真实采油环境并使用显微镜、衰减全反射傅里叶变换红外光谱仪研究了螺杆泵定子材料在不同温度原油环境下的化学老化损伤情况,探究了螺杆泵定子材料在原油环境下的化学损伤机理。结果表明,原油温度和老化时间对氢化丁腈橡胶材料的化学老化损伤有重要影响,在相同老化时间下,螺杆泵定子材料的质量变化率随着原油温度的升高而增加,而在相同老化温度下,螺杆泵定子材料的质量变化率随着老化时间的延长而增加且增速趋缓;螺杆泵定子材料在25℃原油环境下的化学损伤机理主要以分子链的断裂和碳链的氧化交联为主,在60℃原油环境下的化学损伤机理主要包括分子链的断裂、碳链的氧化交联及腈基的氧化交联,而在100℃原油环境下的化学损伤机理主要包括分子链的断裂、碳链的氧化交联反应、腈基的氧化交联反应和腈基间因高温而引发的交联反应。Screw pump stator material was prepared with hydrogenated nitrile rubber as raw material,and the chemical aging damage of the screw pump stator material in different crude oil environment temperatures was studied by simulating real oil production environment and using a microscope and attenuated total reflection Fourier transform infrared spectroscopy.In addition,the chemical damage mechanism of the screw pump stator material in crude oil environment was explored.The results showed that the temperature of the crude oil and aging time had an important influence on the chemical aging damage of the screw pump stator material,and when the aging time was same,the mass change rate of the screw pump stator material increased with the increase in crude oil temperature,while at the same aging temperature,the mass change rate of the screw pump stator material increased with the prolongation of aging time and the increase rate of of mass change rate tended to slow down.The chemical damage mechanism of the screw pump stator material in the crude oil environment of 25℃was mainly the fracture of molecular chains and the oxidation cross-linking reaction of carbon chains;in the crude oil environment of 60℃,the chemical damage mechanism included primarily the fracture of molecular chains,the oxidation cross-linking of carbon chains and the oxidation cross-linking reaction of nitrile groups;while in the crude oil environment of 100℃,the chemical damage mechanism consisted mainly of the fracture of molecular chains,the oxidation cross-linking reaction of carbon chains,the oxidation cross-linking reaction of nitrile groups and the cross-linking reaction between nitrile groups resulted from high temperature.

关 键 词：螺杆泵定子材料 氢化丁腈橡胶 原油环境 质量变化率 衰减全反射傅里叶变换红外光谱 化学老化损伤 损伤机理 

分 类 号：TQ333.7[化学工程—橡胶工业]