In this article, a kind of polyester-type phthalonitrile cyano resin (2,2-bis (((3-((4-(3,4-dicyanophenoxy) benzoyl)oxy)-2-(hydroxymethyl)-2-methylpropanoyl)oxy)methyl) propane-1,3-diyl)bis(oxy)) bis (2-(hydroxymethyl)-2-methyl-3-oxopropane-3, 1-diyl) bis (4-(3,4-dicyanophenoxy) benzoate (hbppn)) with branched structure was introduced. The molecular structure and relative molecular mass of hbppn were characterized by nuclear magnetic resonance, Fourier transform infrared spectroscopy, and the matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF). The results showed that the synthesized HBPPN contained both polyester and hyperbranched structures. The thermal and rheological properties of HBPPN were characterized by differential scanning calorimetry and rheometer, and the results showed that HBPPN would be cured at about 322°C and the viscosity of the resin showed good processability. The results of dynamic mechanical analysis and thermogravimetric analysis showed that the synthesized resin had good heat resistance. The glass transition temperature was above 329°C, the residual weight (C y) at 900°C was as high as 66.2% in the nitrogen atmosphere, and the temperature at which the resin lost 5 wt% of heat in air atmosphere was about 423.3°C. The synthesized HBPPN had good comprehensive properties, which could be applied to high-temperature resistant and thermal protection materials.

中文翻译：

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超支化结构邻苯二甲腈树脂的制备与表征

在本文中，一种聚酯型邻苯二甲腈氰基树脂（2,2-双（（（3-（（4-（3,4-二氰基苯氧基）苯甲酰基）氧基）-2-（羟甲基）-2-甲基丙酰基） oxy)methyl) propane-1,3-diyl)bis(oxy)) bis (2-(hydroxymethyl)-2-methyl-3-oxopropane-3, 1-diyl) bis (4-(3,4-dicyanophenoxy)引入了具有支化结构的苯甲酸酯 (hbppn))。hbppn 的分子结构和相对分子质量通过核磁共振、傅里叶变换红外光谱和基质辅助激光解吸/电离飞行时间质谱 (MALDI-TOF) 进行表征。结果表明合成的 HBPPN 含有聚酯和超支化结构。HBPPN 的热学和流变学特性通过差示扫描量热法和流变仪表征，结果表明，HBPPN在322℃左右会固化，树脂的粘度表现出良好的加工性能。动态力学分析和热重分析结果表明合成的树脂具有良好的耐热性。玻璃化转变温度在329℃以上，在氮气气氛中900℃残余重量（Cy）高达66.2%，树脂在空气气氛中失去5wt%热量的温度约为423.3°C。合成的HBPPN具有良好的综合性能，可应用于耐高温和热防护材料。玻璃化转变温度在329℃以上，在氮气气氛中900℃残余重量（Cy）高达66.2%，树脂在空气气氛中失去5wt%热量的温度约为423.3°C。合成的HBPPN具有良好的综合性能，可应用于耐高温和热防护材料。玻璃化转变温度在329℃以上，在氮气气氛中900℃残余重量（Cy）高达66.2%，树脂在空气气氛中失去5wt%热量的温度约为423.3°C。合成的HBPPN具有良好的综合性能，可应用于耐高温和热防护材料。