Ceramic glass dielectric composite material and preparation process thereof: Fid-Bau Portal

Ceramic glass dielectric composite material and preparation process thereof

LI LEYI / JIA YIZHENG

The invention discloses a ceramic glass dielectric composite material, the dielectric composite material is formed by sintering BaTiO3-SiO2, the content of SiO2 in the BaTiO3-SiO2 is 2.5-5wt%, and the BaTiO3-SiO2 is a BaTiO3 nanoparticle with a SiO2 shell layer, the SiO2 shell layer is a SiO2 shell layer, and the SiO2 shell layer is a SiO2 shell layer. The invention relates to a preparation process of a ceramic glass dielectric composite material, and the method comprises the following steps: a, preparing BaTiO3-SiO2 by using BaTiO3 nanoparticles as a core and adopting a stober process method; b, taking a pva solution as a binder, and pressing BaTiO3-SiO2 into a blank body; c, heating the blank body to 550 DEG C to 650 DEG C, and performing heat preservation for 50 min to 70 min; d, continuously heating the blank body to 1,200-1,260 DEG C, and keeping the temperature for 4-6 hours; e, cooling the blank body to 650 to 750 DEG C, and keeping the temperature for 1.5 to 2.5 hours; f, cooling the blank body to obtain the dielectric composite material. The ceramic glass dielectric composite material and the preparation process have the advantages that the dielectric constant is high, the dielectric loss is low, and the breakdown resistance can be improved.

本发明公开了一种陶瓷玻璃介电复合材料，所述介电复合材料由BaTiO3‑SiO2烧结而成，所述BaTiO3‑SiO2中SiO2的含量为2.5‑5wt.％，所述BaTiO3‑SiO2为具有SiO2壳层的BaTiO3纳米颗粒；一种陶瓷玻璃介电复合材料的制备工艺，包括以下步骤：步骤a：使用BaTiO3纳米颗粒作为核心，采用stober工艺法制备BaTiO3‑SiO2；步骤b：使用pva溶液作为粘结剂，将BaTiO3‑SiO2压制成胚体；步骤c：将胚体加热至550‑650℃，并保温50‑70min；步骤d：将胚体继续加热至1200‑1260℃，保温4‑6h；步骤e：将胚体降温至650‑750℃，并保温1.5‑2.5h；步骤f：将胚体冷却，得到介电复合材料。采用本发明的一种陶瓷玻璃介电复合材料及制备工艺，具有高介电常数和低介电损耗，能够提高抗击穿能力。

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