对两种不同改性氰酸酯树脂的介电性能、玻璃化转变温度、流变性及力学性能进行了研究。结果表明:70℃下树脂体系黏度为20Pa·s,具有良好的工艺性,适用于热熔法生产预浸料;树脂具有优异的介电性能,介电常数为3.1～3.6,介电损耗角正切值为0.005～0.009;耐温性优异,B类树脂玻璃化转变温度达到240℃。该树脂体系是适合耐高温高性能透波材料应用的树脂基体。
The dielectric performance,glass transition temperature,rheological and mechanical properties of two kinds of modified cyanate ester resin were studied.The results indicated that the resin viscosity under 70℃ for 20Pa·s had good manufacturability to suit for melting prepared prepreg.The resin had excellent dielectric properties,that the dielectric constant reached 3.1～3.6,and the dielectric loss of 0.005～0.009 was shown.The glass transition temperature of B resin reached 240℃.The resin could be used for the resin matrix of high temperature resistance and high performance microwave-transparence materials.
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