A kind of ceramic heating sheet and preparation method thereof
A technology of ceramic heating sheet and heating wire, which is applied in the direction of ohmic resistance heating, heating element material, electric heating device, etc., and can solve the problems of large resistance value change and short service life
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[0022] Correspondingly, the present invention also provides a method for preparing a ceramic heating chip, comprising the following steps:
[0023] 101: printing conductive paste on the ceramic substrate;
[0024] 102: One-time high-temperature sintering;
[0025] 103: printing precious metal paste;
[0026] 104: secondary high temperature sintering;
[0027] 105: printing glass glaze paste;
[0028] 106: three times high temperature sintering,
[0029] Obtain ceramic heating plate, described precious metal slurry comprises following composition: P d : 35wt% ~ 85wt%; A g : 10wt% ~ 40wt%; S i o 2 : 1wt% ~ 4wt%; Al 2 o 3 : 2wt% ~ 5wt%; M n o 2 : 1wt% ~ 6wt%; CaO: 0 ~ 6wt%; the balance is cellulose and terpineol. As a preferred version, the noble metal slurry includes the following components: P d : 40wt% ~ 80wt%; A g : 20wt% ~ 30wt%; S i o 2 : 2wt% ~ 3wt%; Al 2 o 3 : 3wt% ~ 4wt%; M n o 2 : 2wt% ~ 5wt%; CaO: 1wt% ~ 5 w t%; the balance is cellulose and terpineol...
Embodiment 1
[0040] Step 101: Printing conductive paste on the ceramic substrate, including: photo master plate, photosensitive, developing, fixing, printing, leveling, drying, sintering;
[0041] Step 102: primary high-temperature sintering, the temperature of the primary high-temperature sintering is 800° C., and the holding time is 5 minutes;
[0042] Step 103: printing precious metal paste, including: photo master plate, photosensitive, developing, fixing, printing, leveling, drying, sintering, the precious metal paste includes the following components: P d : 50wt%; A g : 30wt%; S i o 2 : 3wt%; Al 2 o 3 : 4wt%; M n o 2 : 5wt%; CaO: 5wt%, the balance is cellulose and terpineol;
[0043] Step 104: secondary high-temperature sintering, the temperature of the secondary high-temperature sintering is 850° C., and the holding time is 10 minutes;
[0044] Step 105: printing glass glaze paste, including: photographic master plate, photosensitive, developing, fixing, printing, leveling, ...
Embodiment 2
[0063] Step 101: Printing conductive paste on the ceramic substrate, including: photo master plate, photosensitive, developing, fixing, printing, leveling, drying, sintering;
[0064] Step 102: primary high-temperature sintering, the temperature of the primary high-temperature sintering is 800° C., and the holding time is 5 minutes;
[0065] Step 103: printing precious metal paste, including: photo master plate, photosensitive, developing, fixing, printing, leveling, drying, sintering, the precious metal paste includes the following components: P d : 60wt%; A g : 25wt%; S i o 2 : 2wt%; Al 2 o 3 : 2wt%; M n o 2 : 2wt%; CaO: 2wt%, the balance is cellulose and terpineol;
[0066] Step 104: secondary high-temperature sintering, the temperature of the secondary high-temperature sintering is 850° C., and the holding time is 10 minutes;
[0067] Step 105: printing glass glaze paste, including: photographic master plate, photosensitive, developing, fixing, printing, leveling, ...
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