Synthesis and properties of thermosetting resin based on urushiol

被引：84
|
作者：
Xu, Hongli [1 ]
Lu, Zaijun [2 ]
Zhang, Guangzhao [1 ,3 ]
机构：
[1] Univ Sci & Technol China, Dept Chem Phys, Hefei Natl Lab Phys Sci Microscale, Hefei 230026, Peoples R China
[2] Shandong Univ, Sch Chem & Chem Engn, Jinan 250100, Peoples R China
[3] S China Univ Technol, Fac Mat Sci & Engn, Guangzhou 510640, Guangdong, Peoples R China
来源：
RSC ADVANCES | 2012年 / 2卷 / 07期
基金：
中国国家自然科学基金;
关键词：
NITRILE-FUNCTIONALIZED BENZOXAZINES; RING-OPENING POLYMERIZATION; THERMAL CHARACTERIZATION; PHENOLIC MATERIALS; ORIENTAL LACQUER; POLYBENZOXAZINE; MALEIMIDE; MONOMERS; BLENDS;
D O I：
10.1039/c2ra00829g
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
We have synthesized a novel benzoxazine monomer and polybenzoxazine thermosetting resin based on urushiol, a natural product. Fourier transform infrared (FTIR) spectroscopy and differential scanning calorimetry (DSC) studies demonstrate that the thermally activated ring opening polymerization of the benzoxazine occurs at around 210 degrees C without addition of catalyst. Thermal gravimetric analysis (TGA) measurements show the temperatures corresponding to 5% and 10% weight loss are 325 degrees C and 357 degrees C, respectively, with a char yield of 22% at 600 degrees C. Dynamic mechanical analysis (DMA) studies indicate the urushiol-based polybenzoxazine exhibits excellent toughness with a storage modulus (G') of 606 MPa at room temperature and an elongation at break of 17.4%.
引用
收藏
页码：2768 / 2772
页数：5
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