热塑/热固性聚苯醚的共混改性及其复合材料层压板的性能

Thermoplastic/Thermosetting Polyphenylene Ether Blend Modification and the Property of Composite Laminate

以热固性聚苯醚树脂(PPE)为基体,通过添加热塑性聚苯醚树脂(PPO)进行共混改性,制备了热塑/热固性混合聚苯醚树脂体系(PPO/PPE)及其复合材料层压板,并测试了层压板的力学性能及介电性能。结果表明:随PPO添加量的增加,层压板的力学性能先变好后变差;当添加量达到20%时,层压板的铜箔剥离力达到最大值,增加了24%;当添加量达到30%(质量分数,下同)时,层压板的弯曲强度增加了56%;随着PPO添加量的增加,介质的介电常数与介电损耗因数不断增加,当添加量达到40%时,介电常数为3.68,介电损耗为4.77,玻璃化转变温度降低至167℃,最大降低了约19%。

The thermoplastic/thermosetting mixed polyphenylene ether resin system(PPO/PPE) and its composite laminates were prepared by using thermosetting polyphenylene ether resin(PPE) as matrix and adding thermoplastic polyphenylene ether resin(PPO) to blending modification. The mechanical and dielectric properties of the laminates were tested. The results show that the mechanical properties first became better and then became worse with the increase of PPO addition amount. When the addition amount reached 20%, the copper foil stripping force of the laminate reached the maximum, which increased by 24%. When the addition amount reached 30%(mass fraction, the same below), the bending strength of the medium increased by 56%. With the increase of the addition amount of PPO, the dielectric constant and dielectric loss factor of the medium increased continuously. When the addition amount of PPO reached 40%, the dielectric constant was 3.68, the dielectric loss was 4.77, and the glass transition temperature reduced to 167 ℃, with a maximum reduction of about 19%.