مهندسی مکانیک مدرس

مهندسی مکانیک مدرس

مقایسه خواص مکانیکی پلیمرهای میان لایه شیشه در بارگذاری‌های مختلف

نوع مقاله : پژوهشی اصیل

نویسندگان
گروه مهندسی مکانیک، دانشکده مهندسی، دانشگاه بوعلی سینا، همدان، ایران
چکیده
پلیمرها در طیف وسیعی از صنایع کاربرد دارند. در این پژوهش، به‌بررسی رفتار مکانیکی پلیمرهای مورد استفاده در صنایع شیشه‌سازی پرداخته شده­است. پلیمرهای مورد بررسی شامل پلی‌یورتان ترموپلاستیک (TPU)، پلی‌وینیل بوتیرال (PVB) و سنتری گلس (SG) بودند. این پلیمرها در نرخ کرنش‌های مختلف از s-1 001/0 تا 25/0 تحت آزمایش­های کشش و فشار قرار گرفتند. همچنین، خواص دینامیکی مکانیکی پلیمرها با استفاده از آزمون آنالیز دینامیکی مکانیکی در فرکانس ثابت انجام شد. نتایج آزمون کشش نشان داد که رفتار مکانیکی پلی‌یورتان به نرخ کرنش وابسته نبوده ولی SG به‌شدت به نرخ کرنش حساس بوده است. همچنین، با افزایش نرخ کرنش، تنش شکست SG به‌شدت کاهش یافت. نتایج آزمون فشار نشان داد که TPU تنش بیشتری را می‌تواند تحمل کند. دمای شیشه‌ای شدن TPU نسبت به پلیمرهای دیگر پایین‌تر بود. در مجموع می‌توان نتیجه گرفت که در میان پلیمرهای مورد بررسی در این پژوهش، TPU رفتار مکانیکی بهتری داشته­است.
کلیدواژه‌ها

موضوعات


عنوان مقاله English

Comparison of mechanical properties of glass interlayer polymers under different loadings

نویسندگان English

Farshid Kholoosi
َََAli Alavi Nia
Department of MechanicalEngineering, Bu-Ali Sina University,Hamedan, Iran
چکیده English

Polymers are used in a wide range of industries. In this research, the mechanical behavior of polymers used in the glass industry has been studied. The investigated polymers included thermoplastic polyurethane (TPU), polyvinyl butyral (PVB) and sentry glas (SG). These polymers were subjected to tension and compression tests at different strain rates from 0.001 to 0.25 s-1. Also, the mechanical dynamic properties of the polymers were extracted using the mechanical dynamic analysis test at a constant frequency. The tensile test results showed that the mechanical behavior of polyurethane is not dependent on strain rate, but SG is highly sensitive to strain rate. Also, with increasing strain rate, the fracture stress of SG decreased drastically. The pressure test results showed that TPU can withstand more stress. The glass transition temperature of TPU was lower than the other two polymers. Overall, it can be concluded that among the polymers studied in this research, TPU had better mechanical behavior.


کلیدواژه‌ها English

Polymer
Strain rate
mechanical dynamic analysis
Quasi-static loading
interlayer
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