تهیه، شناسایی و کاربرد زینک‌بورات به عنوان یک عامل بازدارنده ‌آتش برای پلی‌آکریلونیتریل

نوع مقاله : مقاله علمی پژوهشی

نویسندگان

1 مرکز آموزش عالی استهبان - دانشگاه شیراز، استهبان

2 دانشکده شیمی، دانشگاه صنعتی اصفهان، اصفهان

چکیده

امروزه مواد بازدارنده آتش که به مواد قابل اشتعال افزوده می‌شوند تا مقاومت آن‌ها را در برابر شعله‌وری افزایش دهند، اهمیت زیادی دارند. دسته‌ای از این مواد بازدارنده آتش زینک‌بورات‌ها‌ هستند که در این مقاله با استفاده از دو نوع پیش‌ماده مختلف سنتز شده‌اند. در روش اول، ابتدا کمپلکس تریس‌(اتیلن دی آمین)-زینک (II) تترافنیل بورات، [Zn(en)3](BPh4)2، از واکنش ZnCl2 با لیگاند اتیلن‌دی‌آمین در حضور NaBPh4 در حلال آب سنتز شد. سپس از کلسینه شدن این کمپلکس در دمای ˚C650، زینک‌بورات تهیه شد. در روش دوم، مخلوط H3BO3/ZnO با نسبت مولی 6:2 تحت روش هیدروترمال در دمای ˚C200 قرار گرفت و زینک‌بورات به دست آمد. زینک‌بورات‌های تهیه شده با روش‌های مختف شامل FT-IR، XRD، SEM و TGA شناسایی شدند. همچنین کاربرد زینک‌بورات‌های تهیه شده در بازدارندگی اشتعال پلیمر پلی‌آکریلونیتریل (PAN) بررسی شد. نتایج نشان می‌دهند که حضور زینک‌بورات در بافت پلی‌آکریلونیتریل باعث قطع سریع شعله‌وری آن بعد از خروج از شعله می‌شود. بنابراین، زینک بورات‌های تهیه‌شده می‌توانند به عنوان بازدارنده آتش در پلیمرها استفاده شوند.

کلیدواژه‌ها

موضوعات

عنوان مقاله [English]

Preparation, Characterization, and Application of Zinc Borate as a Fire Retardant Agent for Poly(acrylonitrile)

نویسندگان [English]

  • Marzieh Daryanavard 1
  • Parisa Shahrokhi 2
1 Estahban Higher Education Center -Shiraz University, Estahban, Iran
2 Department of Chemistry, Isfahan University of Technology, Isfahan, Iran
چکیده [English]

Nowadays, fire retardants are very important. These materials are added to flammable items to increase their resistance to flammability. Zinc borates are an important class of the fire retardants, which have been prepared in this paper using two different precursors. In the first method, tris(ethylenediamine) zinc(II) tetraphenyl borate complex, [Zn(en)3](BPh4)2, was prepared by reaction of ZnCl2 with en ligand in the presence of NaBPh4 in water solvent. The prepared Zn(II) complex was calcined at 650 ºC to obtain zinc borate. In the second method, a mixture of H3BO3/ZnO with a mole ratio of 6:2 was reacted under the hydrothermal operation at 200 ºC, and zinc borate was obtained. The prepared zinc borates were characterized by different methods including FT-IR, XRD, SEM, and TGA. In addition, the application of the prepared zinc borates as a fire retardant was investigated for poly(acrylonitrile) (PAN) polymer. The results show that the addition of zinc borate to PAN increased its resistance to flammability and the combustion process immediately terminated when the sample removed from the flame. Therefore, the prepared zinc borates are good candidates for use as fire retardants in polymers.

کلیدواژه‌ها [English]

  • Fire retardant
  • Poly(acrylonitrile)
  • Zinc borate
  • Ethylenediamine
  • Boric acid

This is an open access article under the CC-BY-SA 4.0 license.( https://creativecommons.org/licenses/by-sa/4.0/)

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شیمى کاربردى روز
دوره 19، شماره 70
فروردین 1403
صفحه 215-230

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