合成了新型酸洗缓蚀剂O,O'-二（环己基）二硫代磷酸-N,N-二乙铵（EDCDP），通过失重和电化学方法研究EDCDP在H2SO4溶液中对Q235钢的缓蚀性能。结果表明，(27±1)℃，5% H2SO4溶液中，EDCDP质量浓度为100 mg/L时，缓蚀率为97.32%；在 Q235钢表面的吸附规律符合Langmuir吸附等温式，属于自发进行的化学吸附。EDCDP是一种受H2SO4浓度、温度和待测时间影响较小的混合型缓蚀剂。
A new corrosion inhibitor N,N-diethylammonium O,O' -dicyclohexyldithiophosphate (EDCDP) has been synthesized. The inhibition effect of EDCDP against the corrosion of Q235 steel in H2SO4 solution was studied by mass loss, potentiodynamic polarization and electrochemical impedance spectroscopy (EIS) methods. mass loss shows that the inhibition efficiency is up to 97.32 % at the inhibitor concentration of 100 mg/L in 5 % H2SO4 solution. The adsorption of EDCDP on Q235 steel surface obeys the Langmuir's isotherm. Polarization curves indicate that the EDCDP is a mixed type inhibitor. The inhibition efficiency of EDCDP is less impact by concentration of H2SO4, temperature and immersion time.
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| [1] | |
| [2] | |
| [3] | |
| [4] | |
| [5] | |
| [6] | |
| [7] |
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