علوم و فناوری کامپوزیت

ساخت پنل ساندویچی با رویه کامپوزیتی الیاف‏ شیشه‏/وینیل‏ استر و هسته پلی‏ وینیل-کلراید (PVC) مشبک به روش تزریق در خلأ (VIP) برای کاربردهای دریایی

نوع مقاله : مقاله پژوهشی

نویسندگان

1 پژوهشگر، مهندسی مکانیک ، دانشگاه صنعتی مالک اشتر، مجتمع دانشگاهی مواد و فناوری‏های ساخت .

2 هیات استادیار، مهندسی مکانیک ، دانشگاه صنعتی مالک اشتر، مجتمع دانشگاهی مواد و فناوری‏های ساخت.

3 استادیار، مهندسی مکانیک ، دانشگاه صنعتی مالک اشتر، مجتمع دانشگاهی مواد و فناوری‏های ساخت.

4 فارغ‌التحصیل کارشناسی ارشد، مهندسی مکانیک ، دانشگاه صنعتی مالک اشتر، مجتمع دانشگاهی مواد و فناوری‏های ساخت.

چکیده

در تحقیق حاضر روشی بر اساس فرایند تزریق در خلأ برای ساخت پنل‏های ساندویچی مورد استفاده در صنایع دریایی پیشنهاد شده است. خواص مکانیکی محصول ساخته شده با این روش نسبت به روش‏ ساخت سنتی‏‏تر‏ یعنی روش اتصال چسبی بهبود قابل اعتنایی یافته و در عین حال از نقطه نظر اقتصادی نیز به کارگیری این روش مقرون به صرفه است. در این روش ساخت، رویه‏ها و اتصال آن‏ها به هسته در یک مرحله انجام ‏می‏پذیرد که مزایایی همچون کاهش هزینه ساخت، افزایش سرعت تولید و ارتقای کیفیت اتصال رویه به هسته را در پی دارد. با توجه به کاربرد مد نظر یعنی کاربرد در صنایع دریایی، هسته از جنس فوم PVC (پلی‏وینیل‏-کلراید) شیاردار و رویه‏ها از جنس الیاف‏شیشه/وینیل‏استر انتخاب شده‏اند که موادی شناخته شده در صنایع دریایی هستند. خواص مکانیکی پنل ساندویچی ساخته شده با روش پیشنهادی در دو نوع بارگذاری خمشی و فشاری مورد بررسی قرار گرفته است. نتایج به دست آمده حاکی از آن است که در محصول ساخته شده با روش پیشنهادی، استحکام خمشی 78%، استحکام فشاری 92% و جذب انرژی 101% نسبت به پنل ساندویچی ساخته شده با اتصال چسبی افزایش یافته است. عامل اصلی در بهبود خواص مکانیکی در این محصول، ایجاد شبکه‏ای از رزین در فضای خالی شیارهاست که ساختاری مشابه با هسته لانه‏زنبوری پر شده با فوم را به وجود آورده و باعث تقویت هسته، به ویژه در جهت ضخامت ‏می‏شود.

کلیدواژه‌ها

موضوعات

عنوان مقاله [English]

Fabrication of sandwich panels with glass/vinylester composite face-sheets and polyvinyl chloride (PVC) lattice core using vacuum infusion process for marine applications

نویسندگان [English]

  • Tayebeh Akbari 1
  • Elham Shahabi 2
  • Seyed Hossein Taghavian 1
  • Moslem Najafi 3
  • Sajad Mahdavi 4

1 Faculty of Materials and Manufacturing Technologies, Malek Ashtar University of Technology, Iran.

2 Faculty of Materials and Manufacturing Technologies, Malek Ashtar University of Technology, Iran.

3 Faculty of Materials and Manufacturing Technologies, Malek Ashtar University of Technology, Iran.

4 Faculty of Materials and Manufacturing Technologies, Malek Ashtar University of Technology, Iran.

چکیده [English]

In this research, a method based on the vacuum infusion process is proposed for making sandwich panels used in the marine industry. The mechanical properties of the product made with this method have been significantly improved compared to the adhesive bonding method, and also from an economic point of view, it’s cost-effective to use this method. In this method, the construction of face-sheets and their adhesion to the core is done in a single step, which results in some benefits such as reducing construction costs, increasing the production speed and improving the quality of the face-sheets adhesion to the core. According to the intended application, i.e. application in the marine industry, the core is made of grooved Polyvinyl Chloride (PVC) foam and the face-sheets are made of glass/vinylester, which are well-known materials in the marine industry. The mechanical properties of the sandwich panel made by the proposed method have been investigated in both bending and compression loading. The results indicate that in the product made with the proposed method, the bending strength has increased by 78%, the compressive strength has increased by 92%, and the energy absorption has increased by 101% compared to the sandwich panel made by adhesive bonding method. The main factor in improving the mechanical properties of this product is the creation of a network of resin in the empty space of the grooves, which creates a structure similar to the foam filled honeycomb cores and strengthens the core, especially in the thickness direction.

کلیدواژه‌ها [English]

  • Sandwich panel
  • Vacuum infusion process
  • Grooved foam
  • Marine application of composites
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علوم و فناوری کامپوزیت
دوره 10، شماره 1
خرداد 1402
صفحه 2166-2175
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