مهندسی ساخت و تولید ایران

مهندسی ساخت و تولید ایران

بررسی اثر افزودن نانو ذرات کاربید سیلیسیوم برخواص تریبولوژیکی PA6/NBR

نوع مقاله : مقاله پژوهشی

نویسندگان
1 دانشکده مهندسی مکانیک، دانشگاه تربیت دبیر شهید رجایی، تهران، ایران
2 گروه مهندسی مکانیک، دانشگاه شهید بهشتی، تهران، ایران
3 پژوهشگاه پلیمر و پتروشیمی ایران، تهران، ایران
چکیده
کامپوزیت ­های پایه پلیمری به ویژه کامپوزیت­ های با پایه پلی ­آمید امروزه از اهمیت زیادی در کاربردهای مهندسی برخوردار هستند. یکی از مباحث مهم در عمر مفید و کارایی این پلیمرها مقاومت در برابر فرسایش و به طور کلی خواص تریبولوژیکی آن‌ها است. این مقاله به بررسی اثر نانو ذرات کاربید سیلیسیوم بر خواص تریبولوژیکی PA6/NBR پرداخته است. بدین منظور ترکیب­ های مختلف با مقادیر متفاوت  NBRو SiC ساخته شد. درصد وزنی NBR از 10 تا 50 و درصد وزنی SiC از 1 تا 5 درصد انتخاب شد. نمونه­ های ساخته شده تحت آزمون های فرسایش، ضریب اصطکاک و سختی قرار گرفتند. نتایج نشان داد که افزایش در درصد NBR، نرخ سایش را تا 77 درصد افزایش می دهد. همچنین افزودن نانو ذرات کاربید سیلیسیوم تاثیر مثبتی بر خواص تریبولوژیکی نانوکامپوزیت مورد مطالعه داشت به طوری که برای نمونه ­های با مقدار ثابت30 درصد NBR، تغییر درصد وزنی SiC از صفر تا 5 درصد، باعث افزایش سختی تا 11%، کاهش نرخ فرسایش تا 30% و کاهش ضریب اصطکاک تا 28% گردید.
کلیدواژه‌ها

عنوان مقاله English

Investigating the effect of adding silicon carbide nanoparticles on tribological properties of PA6/NBR

نویسندگان English

Masoud Saeidi 1
Nasrollah Bani Mostafa Arab 1
Mohammad Reza Nakhaei 2
Ghasem Naderi 3
1 Department of Mechanical Engineering, Shahid Rajaee Teacher Training University, Tehran, Iran
2 Mechanical Engineering group, Shahid Beheshti University, Tehran, Iran
3 Iran Polymer and Petrochemical Institute, Tehran, Iran
چکیده English

Nowadays polymer-based composites, especially polyamide-based composites, have found great importance in engineering applications. One of the important issues in the useful life and efficiency of these polymers is their resistance to erosion and their tribological properties in general. This article investigates the effect of silicon carbide nanoparticles on the tribological properties of PA6/NBR. For this purpose, different compositions with different amounts of NBR and SiC were made. The weight percentage of NBR was chosen from 10 to 50 and that of SiC was selected from 1% to 5%. The manufactured samples were subjected to erosion, friction coefficient, and hardness tests.  The results showed that increase in the percentage of NBR increased the wear rate by 77%. Also, the addition of silicon carbide nanoparticles had a positive effect on the tribological properties of the studied nanocomposite, such that for samples with a constant value of 30% for NBR, changing the weight percentage of SiC from 0% to 5% causes a hardness increase of up to 11%, erosion rate decrease of up to 30% and friction coefficient decreases of up to 28%.

کلیدواژه‌ها English

Tribology
Thermoplastic Elastomer
Polyamide 6
Nitrile Butadiene Rubber
Silicon Carbide
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