Low-dielectric high-toughness reinforced PBT/PPO (polybutylene terephthalate/polyphenylene oxide) composition and preparation method thereof

The invention relates to a low-dielectric high-toughness reinforced PBT/PPO (polybutylene terephthalate/polyphenylene oxide) composition and a preparation method thereof. The low-dielectric high-toughness reinforced PBT/PPO composition is made from, by weight, 45-85 parts of PBT and 15-55 parts of PPO, adding up to 100 parts, as well as 20-40 parts of glass fiber, 6-14 parts of a compatibilizer, 0.6-1 part of an antioxidant, 5-20 parts of polytetrafluoroethylene, 0.2-1 part of a plasticizer, 0.2-1 part of a silane coupling agent, wherein the weight ratio of the plasticizer to the silane coupling agent is 1:1 to 5:1. The PBT/PPO composition can meet the high requirements of the fields, such as electronic and electrical engineering, integrated circuit packaging and electromagnetic wave shielding, for dielectric properties, strength and toughness. 本发明涉及种低介电高韧性增强PBT/PPO组合物及其制备方法。所述低介电高韧性增强PBT/PPO组合物包括以下重量份的原料：聚对苯二甲酸丁二醇酯(PBT)45～85份，聚苯醚(PPO)15～55份，聚对苯二甲酸丁二醇酯与聚苯醚的重量份数总和为100份，玻璃纤维20～40份，相容剂6～14份，抗氧剂0.6～1份，聚四氟乙烯5～20份，