سنتز مشتقات نیترودار فنیل هیدرازینو کربونیل آکریلیک اسید و استفاده از آن‌ها به-عنوان بازدارنده‌ی خوردگی در پوشش‌های محافظ موقت

نوع مقاله: مقاله پژوهشی

نویسندگان

1 دانشیار، دانشگاه صنعتی مالک اشتر

2 دانشجوی کارشناسی ارشد، دانشگاه صنعتی مالک اشتر

چکیده

فولادهای کربن و کم آلیاژ، مواد عمده ساخت وساز هستند به ویژه به طور گسترده در توزیع آب، نفت، تولید قدرت و همچنین در صنایع شیمیایی و الکتروشیمیایی استفاده می‌شوند. استفاده از مولکول‌های آلی به عنوان بازدارنده‌های خوردگی، مؤثرترین و رایج‌ترین روشی است که برای محافظت از فلزات در مقابل آسیب خوردگی بکار می‌رود. در این تحقیق ترکیب‌های N-فنیل هیدرازینوکربونیل آکریلیک اسید (NPHAA) و N-2و4-دی نیترو فنیل هیدرازینوکربونیل آکریلیک اسید (NDNPHAA) تهیه گردید. ترکیب (NPHAA) از واکنش فنیل هیدرازین با مالئیک انیدرید(MA) در حلال دی متیل فرم آمید (DMF) به دست آمد. ترکیب ((NDNPHAA از واکنش 2و4-دی نیتروفنیل هیدرازین با MA سنتز شد. برای شناسایی کیفی این محصول‌ها از طیف‌سنجی مادون قرمز تبدیل فوریه (FT-IR) استفاده شد. سپس از ترکیب‌های سنتزشده به عنوان بازدارنده‌ی خوردگی استفاده گردید. در ادامه بازدارنده‌های خوردگی سنتزشده با غلظت‌های 10 تا ppm 150 به روغن پایه اضافه شد و محلول‌های حاصل به عنوان پوشش‌های محافظ موقت روی سطوح نمونه‌های فولاد کم کربن پوشش داده شدند. جهت مطالعه‌ی خوردگی، قطعه‌های فولادی لایه نشانی شده طبق روش ASTM D-2247 در اتاقک رطوبت نسبی 100 درصد و در دمای ̊C 38 قرار داده شدند. میزان خوردگی و میزان محافظت نمونه‌های فولاد کم کربن پوشش داده شده با بازدارنده در زمان‌های مختلف تعیین گردید. بازدارنده‌های سنتزشده در غلظت ppm 75 بهترین مقاومت در برابر خوردگی را از خود نشان دادند و ترکیب (NDNPHAA) عملکرد بهتری نسبت به (NPHAA) از خود نشان داد.

کلیدواژه‌ها

موضوعات


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