Method for preparing strontium-barium titanate/polymide dielectric adjustable composite material thick film
A polyimide dielectric and barium strontium titanate technology, which is applied in the field of composite material manufacturing, can solve the problem that the dielectric tunability of polymer-based barium strontium titanate composite materials is not found, and achieves excellent chemical stability, Simple process and excellent electrical properties
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Embodiment 1
[0060] 1. Select ZKPI-305IID ordinary polyimide coating glue produced by Beijing Bomi Technology Co., Ltd. as the polyimide precursor.
[0061] 2. The chemical composition is prepared by conventional solid-state reaction method as Ba 0.6 Sr 0.4 TiO 3 Barium strontium titanate dielectric tunable ceramics. According to XRD detection, barium strontium titanate has a pure cubic perovskite structure without the formation of a second phase.
[0062] 3. Crushing by means of ordinary ball milling, the ball milling speed is 150 rpm, and the ball milling is continued for 4 hours. The central particle size of the prepared barium strontium titanate powder is 0.6um.
[0063] 4. Take 100g of crushed barium strontium titanate powder, dry at 110°C for 24 hours, then add 2-5g of acrylic acid solution, and ultrasonically treat it in 100ml of absolute ethanol for 1 hour, so that the surface of the ceramic powder is treated with acrylic acid.
[0064] 5. Mix 20g of the polyimide precursor and...
Embodiment 2
[0068] 1. Select ZKPI-305IID ordinary polyimide coating glue produced by Beijing Bomi Technology Co., Ltd. as the polyimide precursor.
[0069] 2. The chemical composition is prepared by conventional solid-state reaction method as Ba 0.6 Sr 0.4 TiO 3 Barium strontium titanate dielectric tunable ceramics. According to XRD detection, barium strontium titanate has a pure cubic perovskite structure without the formation of a second phase.
[0070] 3. Crushing by means of ordinary ball milling, the ball milling speed is 150 rpm, and the ball milling is continued for 4 hours. The central particle size of the prepared barium strontium titanate powder is 0.6um.
[0071] 4. Take 100g of crushed barium strontium titanate powder, dry at 110°C for 24 hours, then add 2-5g of acrylic acid solution, and ultrasonically treat it in 100ml of absolute ethanol for 1 hour, so that the surface of the ceramic powder is treated with acrylic acid.
[0072] 5. Mix 20g of the polyimide precursor and...
Embodiment 3
[0076] 1. Select ZKPI-305IID ordinary polyimide coating glue produced by Beijing Bomi Technology Co., Ltd. as the polyimide precursor.
[0077] 2. The chemical composition is prepared by conventional solid-state reaction method as Ba 0.6 Sr 0.4 TiO 3 Barium strontium titanate dielectric tunable ceramics. According to XRD detection, barium strontium titanate has a pure cubic perovskite structure without the formation of a second phase.
[0078] 3. Crushing by high-energy ball milling, ball milling for 4 hours, the central particle size of the prepared barium strontium titanate powder is 0.1um.
[0079] 4. Take 100g of crushed barium strontium titanate powder, dry at 110°C for 24 hours, then add 2-5g of acrylic acid solution, and ultrasonically treat it in 100ml of absolute ethanol for 1 hour, so that the surface of the ceramic powder is treated with acrylic acid.
[0080] 5. Mix 20 g of the polyimide precursor and 20 g of the surface-pretreated barium strontium titanate pow...
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