以4,6二氨基间苯二酚盐酸盐(DAR·2HCl)、对苯二甲酸(TPA)为原料,合成TA盐,再缩聚制得具有较高耐热性的聚对苯撑苯并二噁唑(PBO).以PBO为基体,炭黑(CB)为吸收剂,热压法制备CB/PBO复合材料.对不同炭黑质量分数的复合材料介电及PBO基体与复合材料的热性能进行研究.结果表明,随着炭黑含量的增加,材料的复介电常数的实部与虚部均增大.含5％炭黑的试样厚度达到2 mm时,吸波性能最好,反射率小于-10 dB的带宽可达2.4 GHz,最小反射率可达-32 dB.在空气中450℃保温5h,PBO的质量损失为11.84％,而5％ CB/PBO复合材料的质量损失为21.99％.
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