High-frequency copper-clad substrate with high breakdown strength and preparation method thereof
A high breakdown strength, copper clad substrate technology, applied in chemical instruments and methods, printed circuit manufacturing, manufacturing printed circuit precursors, etc., can solve the problems of low breakdown strength, large temperature change of dielectric constant, etc. The electric constant is stable, the effect of improving uneven surface and smooth surface
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Embodiment 1
[0032] Step 1: Disperse 10g barium titanate nanoparticles into 20mlH 2 o 2 , ultrasonically dispersed, and refluxed at 105°C under vigorous mechanical stirring. After the reaction is completed, cool to room temperature and let stand to remove the supernatant, then add a large amount of distilled water to wash repeatedly until neutral, centrifuge and dry. Add it to the mixed solvent of ethanol and water, ultrasonically disperse, add KH-570, add hydrochloric acid dropwise to adjust the pH value, and stir. Wash and centrifuge with ethanol for several times, and dry to obtain nanometer barium titanate with double bonds on the surface.
[0033] Step 2: Mix 10g of nano-barium titanate and 6g of neodymium oxide double-bonded on the surface evenly, stir, add 0.2g of formaldehyde, add sulfuric acid dropwise, make the pH of the reaction solution = 7, heat the reaction for 2.5h, wash with water, and extract with methanol , dried in vacuum; added to 120ml N, N-dimethylformamide, ultras...
Embodiment 2
[0040] Step 1: Disperse 10g barium titanate nanoparticles into 20mlH 2 o 2 , ultrasonically disperse, and reflux at 100°C under vigorous mechanical stirring. After the reaction is completed, cool to room temperature and let stand to remove the supernatant, then add a large amount of distilled water to wash repeatedly until neutral, centrifuge and dry. Add it to the mixed solvent of ethanol and water, ultrasonically disperse, add KH-570, add hydrochloric acid dropwise to adjust the pH value, and stir. Wash and centrifuge with ethanol for several times, and dry to obtain nanometer barium titanate with double bonds on the surface.
[0041] Step 2: Mix 10g of nano barium titanate and 6g of neodymium oxide double-bonded on the surface evenly, stir, add 0.2g of formaldehyde, add sulfuric acid dropwise, make the pH of the reaction solution = 7, heat the reaction for 2h, wash with water, extract with methanol, Vacuum drying; adding to 120ml N,N-dimethylformamide, ultrasonically dis...
Embodiment 3
[0048] Step 1: Disperse 10g barium titanate nanoparticles into 20mlH 2 o 2 , ultrasonically dispersed, and refluxed at 110°C under vigorous mechanical stirring. After the reaction is completed, cool to room temperature and let stand to remove the supernatant, then add a large amount of distilled water to wash repeatedly until neutral, centrifuge and dry. Add it to the mixed solvent of ethanol and water, ultrasonically disperse, add KH-570, add hydrochloric acid dropwise to adjust the pH value, and stir. Wash and centrifuge with ethanol for several times, and dry to obtain nanometer barium titanate with double bonds on the surface.
[0049] Step 2: Mix 10g of nanometer barium titanate and 6g of neodymium oxide double-bonded on the surface evenly, stir, add 0.2g of formaldehyde, add sulfuric acid dropwise, make the pH of the reaction solution = 7, heat the reaction for 3h, wash with water, extract with methanol, Vacuum drying; adding to 120ml N,N-dimethylformamide, ultrasonic...
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