In the present work, imidazole core mono-amine (ima) was synthesized and used with cardanol (C) and bisphenol-F (BF) to obtain corresponding benzoxazines (C-ima and BF-ima) respectively. Similarly aniline (a) was used as amine precursor for synthesis of benzoxazines (C-a and BF-a) of cardanol (C) and bisphenol-F (BF) respectively for the purpose of blending and comparative studies with ima based benzoxazines. Benzoxazines (C-ima, C-a, BF-ima and BF-a) matrices and blends were prepared using both monofunctional and bifunctional benzoxazines in different weight percent (25/75 wt%, 50/50 wt% and 75/25 wt%) ratios and were characterized using different analytical techniques. From DSC analysis, it was observed that the curing temperature obtained for imidazole based benzoxazines (C-ima and BF-ima) was significantly lower than that of benzoxazines (C-a and BF-a) made using conventional aniline. Similarly, the blends prepared using ima based benzoxazine possess the lower curing temperature, with enhanced thermal stability and char yield than those of conventional cardanol-aniline benzoxazines to an appreciable extent. Hybrid blend composites were developed by reinforcing varying weight percentages (1, 3, 5, 7 and 10 wt%) of GPTMS functionalized bio-silica with selected blends (50:50) of imidazole based benzoxazines (C-ima and BF-ima) and their properties were studied. Data obtained from different studies, suggest that these hybrid composites possess an enhanced thermal stability, higher values of T_g, improved hydrophobic behavior, higher value of char yield and lower dielectric constant than those of neat matrices and blended matrices. It is concluded that the imidazole amine based benzoxazines (C-ima and BF-ima) blends and hybrid composites developed in the present work possess better properties than those of conventional benzoxazine based materials, hence it is suggested that these blends and composites can be used for high performance thermal and dielectric applications.

在本工作中，合成了咪唑核心单胺（ima），并与腰果酚（C）和双酚F（BF）一起使用，分别获得了相应的苯并恶嗪（C-ima和BF-ima）。同样，苯胺（a）用作胺前体，分别用于合成腰果酚（C）和双酚F（BF）的苯并恶嗪（Ca和BF-a），目的是与ima基苯并恶嗪进行共混和比较研究。苯并恶嗪（C-ima，Ca，BF-ima和BF-a）基质和混合物是使用单官能和双官能苯并恶嗪以不同的重量百分比（25/75重量％，50/50重量％和75/25重量％）制备的使用不同的分析技术对比率和进行表征。根据DSC分析，观察到，基于咪唑的苯并恶嗪（C-ima和BF-ima）获得的固化温度明显低于使用常规苯胺制备的苯并恶嗪（Ca和BF-a）的固化温度。类似地，使用ima基苯并恶嗪制备的共混物与常规腰果酚-苯胺苯并恶嗪相比具有较低的固化温度，并具有提高的热稳定性和炭收率。通过增强不同重量百分比（1、3、5、5、7和10重量％）的GPTMS功能化生物二氧化硅与咪唑基苯并恶嗪（C-ima和BF-ima）的选定掺混物（50:50）来开发混合掺混物复合材料及其性质进行了研究。从不同研究获得的数据表明，这些杂化复合材料具有增强的热稳定性，较高的T值 类似地，使用ima基苯并恶嗪制备的共混物与常规腰果酚-苯胺苯并恶嗪相比具有较低的固化温度，并具有提高的热稳定性和炭收率。通过增强不同重量百分比（1、3、5、5、7和10重量％）的GPTMS功能化生物二氧化硅与咪唑基苯并恶嗪（C-ima和BF-ima）的选定掺混物（50:50）来开发混合掺混物复合材料及其性质进行了研究。从不同研究获得的数据表明，这些杂化复合材料具有增强的热稳定性，较高的T值 类似地，使用ima基苯并恶嗪制备的共混物与常规腰果酚-苯胺苯并恶嗪相比具有较低的固化温度，并具有提高的热稳定性和炭收率。通过增强不同重量百分比（1、3、5、5、7和10重量％）的GPTMS功能化生物二氧化硅与咪唑基苯并恶嗪（C-ima和BF-ima）的选定掺混物（50:50）来开发混合掺混物复合材料及其性质进行了研究。从不同研究获得的数据表明，这些杂化复合材料具有增强的热稳定性，较高的T值 通过增强不同重量百分比（1、3、5、5、7和10重量％）的GPTMS功能化生物二氧化硅与咪唑基苯并恶嗪（C-ima和BF-ima）的选定掺混物（50:50）来开发混合掺混物复合材料及其性质进行了研究。从不同研究获得的数据表明，这些杂化复合材料具有增强的热稳定性，较高的T值 通过增强不同重量百分比（1、3、5、5、7和10重量％）的GPTMS功能化生物二氧化硅与咪唑基苯并恶嗪（C-ima和BF-ima）的选定掺混物（50:50）来开发混合掺混物复合材料及其性质进行了研究。从不同研究获得的数据表明，这些杂化复合材料具有增强的热稳定性，较高的T值_g，与纯基质和混合基质相比，疏水性能得到改善，炭收率更高，介电常数更低。结论是，本工作中开发的咪唑胺基苯并恶嗪（C-ima和BF-ima）共混物和杂化复合材料比常规苯并恶嗪基材料具有更好的性能，因此建议可以使用这些共混物和复合物适用于高性能热和介电应用。