硼酸铝晶须改性双酚A二氰酸酯树脂性能研究

Study on BADCy Resin Modified by A1_(18)B_4O_(33) Whisker

对硼酸铝(Al18B4O33)晶须改性双酚A二氰酸酯(BADCy)树脂基体的力学性能及热性能进行了研究。经硅烷偶联剂处理后,5％(质量含量,下同)Al18B4O33晶须改性体系的弯曲强度和冲击强度分别提高了14．3％和5．9％;当晶须含量为8％时,体系的弯曲强度和冲击强度分别由原来的112．4MPa和9．17kJ／m2提高到了121．7MPa和10．36kJ／m2,热变形温度提高8℃;经24h水煮后力学性能保持率都在70％以上。

The mechanical and thermal properties of bisphenol A dicyanate （BADCy） reinforced with Al18B4O33 whisker, which was pre-treated by silane coupling agent, KH550,were studied. When the amount of the whisker was 5 wt%, the flexural and impact strengths increased by 14.3 % and 5.9 %, respectively, based on the neat resin. When 8 wt% of Al18B4O33 whisker was introduced, the flexural and impact strengths reached 112.4 MPa and 9. 17 kJ/m^2, from the values for the neat resin of 121.7 MPa and 10.36 kJ/m^2, respectively. The heat deformation temperature of the composite was increased by 8 ℃. After standing in boiling water for 24 h, the reservation of flexural and impact strengths were above 70 %.