مهندسی ساخت و تولید ایران

مهندسی ساخت و تولید ایران

بررسی اثر نانو ذرات فوم سیلیکا بر خواص مکانیکی، الکتریکی و مغناطیسی کامپوزیت پلیمری اپوکسی/ فوم سیلیکا

نوع مقاله : مقاله پژوهشی

نویسندگان
1 عضو هیئت‌علمی، دانشکده مهندسی هوافضا، دانشگاه علوم و فنون هوایی شهید ستاری، تهران، ایران
2 مرکز تحصیلات تکمیلی، دانشگاه علوم و فنون هوایی شهید ستاری، تهران، ایران
چکیده
نانوذرات فوم سیلیکا در بسیاری از صنایع از جمله صنایع هوافضا، ساختمانی، حمل و نقل، بهداشتی و غیره به‌عنوان پرکننده مورد استفاده قرار می‌گیرد. با توجه به سبکی، خواص عایق حرارتی، استحکام فشاری مناسب و کاربرد این پرکننده به‌عنوان افزایش‌دهنده ویسکوزیته رزین به‌منظور چسب اتصال قطعات مختلف در صنعت هوافضا، در این مقاله به بررسی اثر پرکننده نانوذرات فوم سیلیکا بر روی خواص مکانیکی و الکتریکی نانوکامپوزیت پلیمری اپوکسی/ فوم سیلیکا پرداخته ‌شده ‌است. به‌منظور دست‌یابی به خواص بهینه، نمونه‌هایی با درصد وزنی مختلف ساخته شد. در ادامه جهت تعیین خواص مکانیکی کامپوزیت‌های تولید شده، آزمون کشش و آزمون خمش سه‌نقطه‌ای و به‌جهت تعیین خواص الکتریکی، آزمون ثابت دی‌الکتریک انجام شد. در پایان خواص مکانیکی و الکتریکی نمونه‌ها با درصد وزنی مختلف با رزین اپوکسی خالص مقایسه شد. نتایج نشان داد که بیشینه استحکام کششی رزین خالص، فوم سیلیکا 5 و 9 درصد وزنی به ترتیب برابر با 18، 16 و 10 مگاپاسکال است. بیشینه استحکام خمشی برای رزین خالص، فوم سیلیکا 5 و 9 درصد وزنی به ترتیب برابر با، 109، 85 و 67 مگاپاسکال به­دست آمد. بیشینه ثابت دی‌الکتریک اندازه‌گیری شده برای رزین خالص، فوم سیلیکا 5 و 9 درصد وزنی به ترتیب برابر با، 95/2، 97/2 و 09/3، بدست آمد. بیشینه تانژانت تلفات برای رزین اپوکسی، فوم سیلیکا 5 و 9 درصد وزنی به ترتیب برابر با، 16/0 ، 17/0 و 23/0 اندازه‌گیری شد. نتایج خواص الکتریکی حاکی از آن است که افزودن پرکننده فوم سیلیکا به رزین، تاثیر منفی بر روی خواص الکتریکی آن نداشته است.
کلیدواژه‌ها

عنوان مقاله English

Study of the effect of fumed silica on mechanical, electrical, and magnetic properties of epoxy/ fumed silica composite

نویسندگان English

Reza Sarkhosh 1
Mohammad Kazemi Nasrabadi 1
Reza ParsaFar 2
1 Faculty Member, Department of Aerospace Engineering, Aeronautical University of Science and Technology, Tehran, Iran
2 Graduate Center, Aeronautical University of Science and Technology, Tehran, Iran
چکیده English

Fumed Silica nanoparticles are widely used as fillers in various industries such as aerospace, building, transportation, health, and more. Considering the lightweight, thermal insulation properties and suitable compressive strength and, the use of this filler as an increaser of resin viscosity to glue different parts in the aerospace industry, in this study, the effect of Fumed silica nanoparticles filler on the mechanical and electrical properties of epoxy/Fumed silica polymer Nano composite has been investigated. To achieve optimal properties, samples with different weight percentages were made. To determine the mechanical properties of the produced composites, the tensile test and the three-point bending test were performed, and to determine the electrical properties of the samples, the dielectric constant test was performed. In the end, the mechanical and electrical properties of the samples with different weight percentages were compared with the pure epoxy resin sample. The results showed that the maximum tensile strength of pure resin samples, Fumed silica 5% and 9% are 18, 16, and 10 MPa, respectively. The maximum flexural strength for pure resin, Fumed silica 5%, and 9% were 109, 85, and 67 MPa, respectively. The maximum dielectric constant measured for pure resin, Fumed silica 5% and 9% were obtained as 2.95, 2.97, and 3.09 respectively. The maximum Loss tangent measured for pure resin, Fumed silica 5% and 9% were obtained as 0.16, 0.17, and 0.23 respectively. The results of electrical properties indicate that the addition of Fumed silica filler to the resin did not affect the electrical properties of the resin.

کلیدواژه‌ها English

Fumed Silica
Nanoparticles Filler
Mechanical And Electrical Properties
Dielectric Constant
Loss Tangent
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