کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5021989 | 1469473 | 2017 | 23 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Synthesis of pyridine-containing diamine and properties of its polyimides and polyimide/hexagonal boron nitride composite films
ترجمه فارسی عنوان
سنتز دیامین حاوی پییرین و خواص آن پلییمید ها و فیلم های پلی اتیل / هگزاگونال نیترید بور
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی (عمومی)
چکیده انگلیسی
A pyridine-containing diamine, 4,4â²-bis(5-amino-2-pyridinoxy)diphenyl ether, was prepared via a two-step procedure. Based on the diamine, a series of polyimides were prepared by traditional two-step method. The characteristic peaks of polyimides on their fourier transform infrared (FI-IR) spectra indicated full imidization. Thermogravimetric analysis (TGA), dynamical mechanical analysis (DMA), differential scanning calorimetry (DSC) and ultraviolet-visible (UV-vis) spectra data showed that the polyimides displayed good properties. Polyimide/hexagonal boron nitride (PI/hBN) composite films were prepared, 3,3â²,4,4â²-benzophenonetetracarboxylic dianhydride based polyimide (PI-2) was used as the matrix. In addition, the effects of hBN content on the thermal conductivity (TC) of PI/hBN composites films were investigated. The TC of pure PI-2 was 0.148Â WÂ mâ1Â Kâ1, when the hBN content increased to 40Â wt %, the TC increased to 0.686Â WÂ mâ1Â Kâ1. The enhancement in this TC value was as high as 460% compared to pure PI-2. Meanwhile, the PI/hBN composites films retained excellent thermal and dynamic mechanical properties.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Composites Science and Technology - Volume 152, 10 November 2017, Pages 165-172
Journal: Composites Science and Technology - Volume 152, 10 November 2017, Pages 165-172
نویسندگان
Shiheng Zhang, Xiaoya Li, Xiaoxiao Guan, Yancen Shi, Kun Wu, Liyan Liang, Jun Shi, Mangeng Lu,