کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5210120 | 1382875 | 2013 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Synthesis and characterization of soluble phenylethynyl-terminated imide oligomers derived from pyromellitic dianhydride and 2-phenyl-4,4â²-diaminodiphenyl ether
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آلی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Synthesis and characterization of soluble phenylethynyl-terminated imide oligomers derived from pyromellitic dianhydride and 2-phenyl-4,4â²-diaminodiphenyl ether Synthesis and characterization of soluble phenylethynyl-terminated imide oligomers derived from pyromellitic dianhydride and 2-phenyl-4,4â²-diaminodiphenyl ether](/preview/png/5210120.png)
چکیده انگلیسی
Novel addition-type imide oligomer (degree of polymerization: n = 1-10) derived from 1,2,4,5-benzenetetracarboxylic dianhydride (PMDA), 2-phenyl-(4,4â²-diaminodiphenyl ether) (p-ODA) which has asymmetric and non-planar structure, and 4-phenylethynylphthalic anhydride was synthesized for the matrix resin of high heat resistant carbon fiber-reinforced composites. The uncured imide oligomers (degree of polymerization: n = 1-4) showed good solubility (more than 30 wt.%) in aprotic solvents such as N-methyl-2-pyrrolidone (NMP). These imide oligomers also showed a very low viscosity. These data were accomplished by preventing the aggregation caused by the pendant phenyl group of p-ODA. The imide oligomers were successfully converted to cross-linked structures after curing at 370 °C. The glass transition temperature and elongation at break (εb) of the cured imide resin were found to be very high (almost 360 °C and >15%) respectively.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Reactive and Functional Polymers - Volume 73, Issue 2, February 2013, Pages 340-345
Journal: Reactive and Functional Polymers - Volume 73, Issue 2, February 2013, Pages 340-345
نویسندگان
Masahiko Miyauchi, Yuichi Ishida, Toshio Ogasawara, Rikio Yokota,