کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7889775 1509865 2018 29 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Experimental analysis of mechanical properties and microstructure of long glass fiber reinforced polypropylene processed by rapid heat cycle injection molding
ترجمه فارسی عنوان
تجزیه و تحلیل تجربی از خواص مکانیکی و ریز ساختار پلی اتیلن تقویت شده با فیبر طولانی که از طریق تزریق قالب گیری سریع چرخه پردازش می شود
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
چکیده انگلیسی
Rapid heat cycle molding (RHCM) of reinforced thermoplastics is increasingly used in order to obtain high surface quality on structural parts. In this work, the effect of RHCM on both microstructure and ultimate tensile strength of polypropylene reinforced with 30 wt% long glass fibers was investigated. Micro X-ray computed tomography was employed to allow a non-destructive assessment of fibers orientation and internal porosity, while optical measurements were used to evaluate the residual fibers length distribution. The experimental results indicated that an increase of injection velocity always results in a decrease of ultimate tensile stress, due to higher fiber breakage. This effect is partly attenuated at low mold temperature, due to an increase of fiber orientation. On the other hand, when using RHCM an increase of injection velocity results in a greater decrease of ultimate tensile stress, due to the reduction of both fiber length and fiber orientation.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Composites Part A: Applied Science and Manufacturing - Volume 107, April 2018, Pages 366-373
نویسندگان
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