CAJ | 학술논문

采用溶剂法合成新型羟基封端的苯并恶嗪(Boz-BPA)中间体及其固化物[P(Boz-BPA)]。利用红外光谱(FTIR)和核磁共振对其结构进行表征，通过差扫描量热法、FTIR和热失重分析其固化过程。采用熔融预聚法制备了氰酸酯(CE)/双马来酰亚胺(BMI)/Boz-BPA树脂体系，并分析研究了改性树脂的力学性能。结果表明，Boz-BPA中间体的固化温度为227℃，固化产物的5%和10%热失重温度分别为365和395℃，800℃时的质量保持率高达54%；适量Boz-BPA的加入可以明显提高CE/BMI树脂的韧性和强度，10%Boz-BPA的加入可使CE/BMI树脂的冲击强度达到14.3 kJ/cm2，弯曲强度达到128.6 MPa。
채용용제법합성신형간기봉단적분병악진(Boz-BPA)중간체급기고화물[P(Boz-BPA)]。이용홍외광보(FTIR)화핵자공진대기결구진행표정，통과차소묘량열법、FTIR화열실중분석기고화과정。채용용융예취법제비료청산지(CE)/쌍마래선아알(BMI)/Boz-BPA수지체계，병분석연구료개성수지적역학성능。결과표명，Boz-BPA중간체적고화온도위227℃，고화산물적5%화10%열실중온도분별위365화395℃，800℃시적질량보지솔고체54%；괄량Boz-BPA적가입가이명현제고CE/BMI수지적인성화강도，10%Boz-BPA적가입가사CE/BMI수지적충격강도체도14.3 kJ/cm2，만곡강도체도128.6 MPa。
A novel hydroxy-terminated benzoxazine(Boz-BPA) was synthesized and its thermoset [P(Boz-BPA)] was prepared. The structures of Boz-BPA was confirmed by Fourier transform infrared spectroscopy (FTIR) and nuclear magnetic resonance. Using differential scanning calorimetry,FTIR and thermal gravimetric analysis,the curing behavior of Boz-BPA was probed. The modified resin system of cyanate (CE)/bismaleimide (BMI)/Boz-BPA was prepared by melting pre-polymerization.The mechanical properties of CE/BMI/Boz-BPA was also investigated.The results show that curing temperature of Boz-BPA is 227℃. The 5%and 10%weight loss temperatures of polybenzoxazine are 365℃and 395℃respectively with quality retention rate up to 54%at 800℃. The addition of Boz-BPA into CE/BMI resin significantly improves toughness and strength,its impact strength and flexural strength is 14.3 kJ/cm2 and 128.6 MPa when amount of Boz-BPA is 10%.