大连理工大学主页平台管理系统蹇锡高改性含氮杂环聚醚砜酮绝缘漆的合成、表征及应用研究中文主页

论文成果

Phthalonitrile-functionalized poly(ether imide) oligomers derived from phthalazinone-containing dianhydride: facile synthesis, curing and properties: 点击次数：; 发布时间： 2019-03-12; 发布时间：2019-03-12; 论文类型：期刊论文; 发表时间：2018-03-01; 发表刊物：POLYMER BULLETIN; 收录刊物：Scopus、EI、SCIE; 卷号：75; 期号：3; 页面范围：1037-1054; ISSN号：0170-0839; 关键字：Poly(ether imide); 4-Phenyl phthalazinone; Phthalonitrile oligomer; Thermal property; 摘要：A novel series of soluble and curable poly(ether imide) oligomers (PPEI-Phs) containing phthalazinone moiety and terminal phthalonitrile groups were prepared from an excess amount of phthalazinone-based dianhydride and 4,4'-diaminodiphenyl ether, followed by being end-capped with 4-(3-aminophenoxy)phthalonitrile in a two-step, one-pot reaction. The phthalazinone-based PPEI-Phs were cured by a heating treatment procedure up to 350 A degrees C, in the presence of 4,4'-diaminodiphenylsulfone to obtain the cross-linked polymers (cPPEI-Phs). Fourier transform infrared and elemental analysis was utilized to confirm the chemical structures of the resultant oligomers and cross-linked polymers. PPEI-Phs exhibited good solubility in polar aprotic solvents, such as N-methyl pyrrolidone, m-cresol and pyridine, partially soluble in N,N-dimethyl-2-acetamide and chloroform, while the cross-linked cPPEI-Phs were insoluble in all tested solvents, even in sulfuric acid. Furthermore, the gel content of the cPPEI-Phs samples ranged from 96 to 88%, which confirmed the formation of cross-linked network. PPEI-Phs showed high glass transition temperature (T (g)) ranged from 225 to 286 A degrees C as determined by differential scanning calorimetry, however, no detectable T (g) was observed after thermal curing. cPPEI-Phs exhibited T (d5%) in the range of 529-545 A degrees C, which is up to 49 A degrees C higher than the PPEI-Phs, indicating the crosslinking structures of cPPEI-Phs. Moreover, all of cPPEI-Phs displayed high limited oxygen index up to 46.7, which can be attributed to the formation of N-heterocyclic s-triazine or phthalocyanine structures during the curing procedure.

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蹇锡高

同专业博导同专业硕导个人学术主页

教授博士生导师硕士生导师

性别：男

毕业院校：大连工学院

学位：硕士

所在单位：化工学院

学科：高分子材料. 高分子化学与物理. 膜科学与技术

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