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以含砜基多元酚混合物为原料合成了苯并噁嗪(MS-a),以MS-a或将其与其它热固性树脂共混制得玻璃布层压板。采用傅里叶红外光谱(FT-IR)、核磁共振氢谱(1H-NMR)表征了MS-a的化学结构,用示差扫描量热分析(DSC)、热失重分析(TGA)、动态热机械分析(DMA)研究了它的热固化行为和热稳定性。测试了其玻璃布层压板的弯曲性能、阻燃性能和介电性能。结果表明,MS-a具有较低的固化温度,其固化物在800℃下残炭率达到61.8%,制成的玻璃布层压板具有较高的T g(219.9℃),良好的力学性能和介电性能,阻燃级别达到UL94 V-0级。
Benzoxazine (MS-a) was synthesized from a sulfone-containing polyphenols mixture, and MS-a was blended with other thermosetting resins to prepare a glass cloth laminate. The chemical structure of MS-a was characterized by Fourier transform infrared spectroscopy (FT-IR) and nuclear magnetic resonance (1H-NMR) spectroscopy. Differential scanning calorimetry (DSC), thermogravimetric analysis (TGA) Analysis (DMA) studied its thermal curing behavior and thermal stability. Flexural properties, flame retardancy and dielectric properties of glass cloth laminates were tested. The results show that MS-a has a lower curing temperature and the cured carbon residue reaches 61.8% at 800 ℃. The resulting glass cloth laminate has high T g (219.9 ℃), good mechanical properties and Dielectric properties, flame retardant grade UL94 V-0 level.