一种含马来酰亚胺苯并噁嗪的合成及性能

Synthesis And Performance of a Type Benzoxa-Zine Resin Containing Maleimide

以4-氨基苯基马来酰亚胺、甲醛、苯酚为原料,采用两步法经中间产物三嗪(TMIPT)合成苯并噁嗪(MIPB),并借助红外光谱(FT-IR)、核磁共振(1H-NMR)和元素分析(EA)等手段对产物MIPB进行了表征。通过差示扫描量热(DSC)、FT-IR和热重分析(TGA)对MIPB的热行为进行了研究,结果发现,MIPB化合物的熔点为113.3℃,相比于Ishida报道的MIB化合物147℃的熔点降低了33.7℃,MIPB在150℃的固化率大大增加,固化后的MIPB树脂5%热失重温度T5为348℃,10%热失重温度T10为368℃,800℃残炭率达到55.6%。

The 3-（4-N-maleimido）phenyl-3,4-dihydro-2H-1,3-benzox-azine（MIPB） was prepared from N-（4-aminophenyl）maleimide,phenol and paraformaldehyde by two steps reactions via the 1,3,5-tri-（4-（maleimide）phenl）-1,3,5-triazine（TMIPT） intermediate. The chemical structures of MIPB were confirmed by Fourier transform infrared spectrum（FT-IR）,1H nuclear magnetic resonance spectrum（1H-NMR） and elemental analysis（EA）. The curing property and the thermal stability of the cured resin were tested by differential scanning calorimetry （DSC）,FT-IR and thermogravimetric analysis （TGA） respectively. DSC spectra show that the melting point of MIPB monomer is 113.3 ℃,compared with the MIB monomer reported by Ishida,the melting point is decreased 33.7 ℃. From the study of the curing behaviour of MIPB by DSC and FT-IR,we find that above 150 ℃,the MIPB monomer nearly completely cures. The cured MIPB resin shows that the T5 is 348 ℃,the T10 is 368 ℃ and a char yield at 800 ℃ is 55.6%.