بهینه مقاومتی شیشه‌های اکریلیکی با استفاده از پوشش اپوکسی

معصوم نژاد, مجتبی; شمشادی, رسول

doi:10.48301/kssa.2021.304548.1729

بهینه مقاومتی شیشه‌های اکریلیکی با استفاده از پوشش اپوکسی

نوع مقاله : مقاله پژوهشی (کاربردی)

نویسندگان

¹ استادیار دپارتمان مهندسی مکانیک، دانشکده شهید چمران، دانشگاه فنی و حرفه‌ای استان گیلان، ایران.

² عضو هیئت علمی، گروه مهندسی شیمی، دانشکده چمران، دانشگاه فنی و حرفه‌ای استان گیلان، ایران،

10.48301/kssa.2021.304548.1729

چکیده

در سال‌های اخیر استفاده از پلیمر‌های شفاف در زمینه‌هایی مانند کاربردهای نوری، شیشه‌های خودرو و غیره مرسوم می‌باشند. در میان آنها، پلی (متیل‌ متاکریلات) از شناخته‌شده‌ترین و پر‌مصرف‌ترین پلاستیک‌ها با خواص عبور نور عالی هستند که برای ساخت شیشه‌ها استفاده می‌شوند. عیب اصلی شیشه‌های اکریلیکی خراش‌پذیری آنها می‌باشد که اغلب متأثر از شرایط نگهداری، حمل‌ونقل، فرایند شکل‌دهی است و موجب کاهش کیفیت شیشه‌های پلیمری می‌شود و در نتیجه کاهش عملکرد و طول عمر آنها را در پی دارد. برای این منظور برای بهبود مقاومت خراش از رزین گلیسیدوکسی پروپیل متوکسی سیلان به‌عنوان افزودنی به میزان 5/0 و 1 درصد وزنی برای بهبود خواص سطحی استفاده شد. برای بررسی تأثیر اعمال پوشش رزین اپوکسی و افزودنی سیلانی (به‌عنوان عوامل کاهش دهنده ضریب اصطکاک) بر مقاومت به خراش و سایش از آزمون‌های سختی سنجی، سختی‌سنجی مدادی، مقاومت به خراش، ساییدگی و شستشو، ضریب اصطکاک و سایش Taber استفاده گردید. از نتایج به‎دست‌آمده مشاهده شد که با اعمال پوشش اپوکسی بر ورق‌های پلی (متیل متاکریلات)، با حفظ شفافیت، بهبود در مقاومت به خراش و سایش به‌ترتیب به میزان 28 و 200 درصد ایجاد شده است. با اینکه اعمال پوشش اپوکسی ضریب اصطکاک را کمی افزایش داده است اما استفاده از افزودنی سیلانی نه تنها این کاستی را جبران کرده و ضریب اصطکاک را کاهش داده است بلکه مقاومت سایشی و خراشی را بیشتر از 50 درصد بهبود داده است.

کلیدواژه‌ها

20.1001.1.23829796.1401.19.3.5.5

موضوعات

مهندسی مکانیک

عنوان مقاله [English]

Optimal Resistance of Acrylic Glass Using Epoxy Coating

نویسندگان [English]

Mojtaba Masoumnezhad ¹
Rasoul Shemshadi ²

¹ Department of Mechanical Engineering, Faculty of Chamran, Guilan Branch, Technical and Vocational University (TVU) ,Tehran, Iran,

² Faculty Member, Chemical Engineering, Faculty of Chamran, Guilan Branch, Technical and Vocational University. (TVU), Tehran, Iran.

چکیده [English]

In recent years, the use of transparent polymers in fields such as optical applications and car glass has become common. Among these transparent polymers, poly (methyl methacrylate) is one of the most well-known and widely used plastics with excellent light-transmitting properties, which is used to make glass. The main disadvantage of acrylic glass is its scratch resistance which is often affected by storage conditions, transportation, and molding process, reducing the quality of polymer glass and thus its performance and longevity. For this purpose, glycidoxypropyl trimethoxysilane resin was used as an additive in the amount of 0.5 and 1% by weight to improve surface properties. To investigate the effect of epoxy resin coating and silane additive (as friction reducing agents) on scratch and abrasion resistance, hardness test, pencil hardness test, scratch resistance, abrasion and wash, friction coefficient and Taber abrasion were carried out. The results obtained by applying epoxy coating on poly (methyl methacrylate) sheets, while maintaining transparency, improved scratch and abrasion resistance by 28 and 200%, respectively. Although the application of epoxy coating slightly increased the coefficient of friction, the use of silane additive compensated for this shortcoming and reduced the coefficient of friction, and improved the abrasion and scratch resistance by more than 50%. It was also observed that the use of epoxy coatings and additives that improve surface properties did not have a negative effect on transparency and light transmission.

کلیدواژه‌ها [English]

Scratch resistance
Acrylic
Epoxy
Coating
Silane

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