Low-temperature lead-free packaging slurry for mica capacitor and preparation method thereof
A technology for encapsulating slurry and capacitors, which is applied in the direction of fixed capacitor casing/package, fixed capacitor parts, etc., which can solve the problems of small adhesion, poor matching of mica capacitors, and harmfulness to human body, and achieve good matching effect
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Embodiment 1
[0024] 1) Preparation of lead-free glass powder: take 50% Bi by weight percentage 2 o 3 , 16% of B 2 o 3 , 6% SiO 2 , 4% Al 2 o 3 , 7% of K 2 O, 7% Na 2 O, 3% TiO 2 , 3% of V 2 o 5 , and a 4% P 2 o 5 , grind it into powder and pass it through a 60-mesh sieve, mix it evenly in a mixer, put it in a mortar, transfer it to a high-temperature resistance furnace, and keep it warm at 1000 ° C for 3 hours, then take it out and immerse it in cold water Carry out water quenching to obtain glass slag, then put the above-mentioned glass slag into a ball mill and mill it for 4 hours to form glass powder. Finally, pass the ball-ground glass powder through 400 sieves, and then dry to obtain lead-free glass powder for use .
[0025] 2) Preparation of organic vehicle: Weigh 85% terpineol, 6% ethyl cellulose, 4% polydimethylsiloxane as a leveling agent, and 5% polydimethylsiloxane as a defoamer according to weight percentage Tetraethyl orthosilicate was put into a beake...
Embodiment 2
[0028] 1) Preparation of lead-free glass powder: take 53% Bi by weight 2 o 3 , 20% of B 2 o 3 , 5% SiO 2 , 3% Al 2 o 3 , 6% of K 2 O, 5% Na 2 O, 2% TiO 2 , 3% of V 2 o 5 , and a 3% P 2 o 5 , grind it into powder and pass it through a 60-mesh sieve, mix it evenly in a mixer, put it in a mortar, transfer it to a high-temperature resistance furnace, and keep it warm at 1000 ° C for 3 hours, then take it out and immerse it in cold water Carry out water quenching to obtain glass slag, then put the glass slag obtained above into a ball mill and mill for 4 hours to form glass powder, and finally pass the ball-ground glass powder through 400 sieves, and then dry to obtain lead-free glass powder for use.
[0029] 2) Preparation of organic vehicle: Weigh 86% terpineol, 10% ethyl cellulose, 1.5% polymethylphenylsiloxane as a leveling agent, and 2.5% as a defoamer according to weight percentage Put tetraethyl orthosilicate into a beaker, react in a water bath at 90...
Embodiment 3
[0032] 1) Preparation of lead-free glass powder: Weigh 56% Bi 2 o 3 , 18% of B 2 o 3 , 10% SiO 2 , 2% Al 2 o 3 , 4% of K 2 O, 3% Na 2 O, 1% TiO 2 , 5% of V 2 o 5 , and 1% of P 2 o5 , grind it into powder and pass it through a 60-mesh sieve, mix it evenly in a mixer, put it in a mortar, transfer it to a high-temperature resistance furnace, and keep it warm at 1000 ° C for 3 hours, then take it out and immerse it in cold water Carry out water quenching to obtain glass slag, then put the glass slag obtained above into a ball mill and mill for 4 hours to form glass powder, and finally pass the ball-ground glass powder through 400 sieves, and then dry to obtain lead-free glass powder for use.
[0033] 2) Preparation of organic vehicle: Weigh 87% terpineol, 8% ethyl cellulose, 1% organo-modified polysiloxane as a leveling agent, and 4% as a defoamer Tetraethyl orthosilicate was put into a beaker, and reacted in a water bath at 90°C for 3 hours, and when the li...
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