کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5189742 | 1381191 | 2006 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Toughening of dimethacrylate resins by addition of ultra high molecular weight polyethylene (UHMWPE) particles
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آلی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
The effects of the addition of UHMWPE particles, of nominal ã80 μmã size, on the fracture toughness, flexural modulus and strength of composites made with dimethacrylate resins (60/40 wt/wt BisGMA-TEGMA) were investigated as a function of volume fraction of UHMWPE (0-60 vol%) and particle surface treatment. Interfacial shear strengths (Ï) were measured via microbond shear strength tests using Spectra900⢠(UHMWPE) fibers and BisGMA-TEGMA beads. Ï increased by a factor of 4 compared with untreated UHMWPE, and surface treated particles improved the mechanical properties of the composite. Fracture toughness (KIC) and flexural modulus (E) increased with increased volume fraction of UHMWPE, with maximum KIC/E increases (at 60 vol%) of 238%/25% compared with the neat resin. SEM images showed debonding as well as yielding and fibrillation of the UHMWPE particles, suggesting that these were significant toughening mechanisms.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Polymer - Volume 47, Issue 12, 31 May 2006, Pages 4318-4327
Journal: Polymer - Volume 47, Issue 12, 31 May 2006, Pages 4318-4327
نویسندگان
Rahul A. Ranade, Stephanie L. Wunder, George R. Baran,