کاهش سمیت رزین‌ آکریلیک با حذف مونومرهای آزاد باقی‌مانده جهت توسعه جوهر رسانای نقره با پایداری بهبودیافته

نوع مقاله : مقاله پژوهشی

نویسنده

گروه محیط زیست و رنگ، پژوهشگاه رنگ، تهران، ایران، صندوق پستی: 654-16765

10.30509/jcst.2025.167617.1268

چکیده

هدف این مطالعه، طراحی رزین آکریلیک  کم‌سمیت برای ساخت جوهر رسانای نقره مورد استفاده در چاپ مدارهای رسانا است. رزین آکریلیک   کربوکسیله- هیدروکسیله بر پایه مونومرهای متیل متاکریلات، بوتیل اکریلات، آکریلیک  اسید و 2-هیدروکسی اتیل متاکریلات از طریق بسپارش رادیکالی آزاد به صورت محلولی سنتز شد. خصوصیات رزین نظیر دمای گذار شیشه‌ای (Tg) °C 40، عدد اسیدی 8.2، عدد هیدروکسیلی (mgKOH/g) 6/56، با استفاده از آزمون DSC، FTIR و تیتراسیون تأیید گردید. همچنین عدم سمیت ناشی از حضور مونومر آزاد توسط آزمون‌های کروماتوگرافی گازی، FTIR و درصد جامد اثبات گردید. جوهر‌های رسانا محتوی 52-74 درصد نانوذرات نقره (50-10 نانومتر)، با رزین به دست آمده تولید و با روش اسکرین چاپ شدند. جوهر Ag-59 % محتوی 59 درصد نقره در حالت خشک با داشتن مقاومت الکتریکی (Ω.cm) 7/0، پایداری عالی (بدون جدایش طی 60 روز)، چسبندگی B 5، گرانروی بهینه و دانه‌بندی زیر 10 میکرون، به‌عنوان جوهر بهینه انتخاب شد. نتایج SEM-EDX توزیع یکنواخت نانوذرات نقره در جوهر را تأیید کرد. این رزین آکریلیک می‌تواند پایه‌ای مؤثر برای تولید جوهر رسانای پایدار و کم‌سمیت با عملکرد الکتریکی مطلوب جهت جایگزینی قلع باشد.

کلیدواژه‌ها

موضوعات

عنوان مقاله [English]

Toxicity Reduction of Acrylic Resin by Eliminating Residual Free-Monomers for the Development of Silver Conductive Ink with Enhanced Stability

نویسنده [English]

  • Sahar Abdollahi Baghban
Department of Environmental Research, Institute for Color Science and Technology, P.O. Box: 16765- 654, Tehran, Iran
چکیده [English]

This study aimed to design a low-toxicity acrylic resin to develop a silver conductive ink for printing conductive circuits. A carboxylated-hydroxylated acrylic resin based on (meth)acrylate monomers was synthesized via a solution-free radical polymerization. The resin properties, a Tg: 40 °C, acid value: 8.2, and hydroxyl value: 56.6 mg KOH/g, were confirmed using DSC, FTIR, and titration analyses. Furthermore, gas chromatography, FTIR, and solid-content tests confirmed the absence of residual monomers to assess toxicity. Conductive inks containing 52-74 % silver nanoparticles (50-10 nm) were produced using the synthesized resin and applied via the screen method. The Ag-59 % ink, containing 59 % silver in the dry state, exhibiting a resistivity of 0.7 Ω.cm, excellent stability (no separation over 60 days), 5B crosscut adhesion, optimal viscosity, and a particle size of <10 µm, was selected as the optimized ink. SEM-EDX results confirmed the uniform distribution of silver nanoparticles within the dried ink. This acrylic resin can serve as an effective matrix for producing low-toxicity, stable, conductive ink with desirable electrical performance for tin-replacement applications.

کلیدواژه‌ها [English]

  • Silver Conductive Ink Toxicity from Residual Monomers Hydroxylated
  • Carboxylated Acrylic Resin Conductivity Printed Electronic Circuits

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