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Piezoresistor blank, preparation method thereof, piezoresistor and preparation method thereof
The invention discloses a piezoresistor blank, a preparation method thereof, a piezoresistor and a preparation method thereof. The preparation method of the piezoresistor blank includes (1), mixing 70-95wt% of piezoresistor powder and 5-30wt% of binder to be pug, cooling the pug to room temperature, and then breaking the pug into granules for injection molding, wherein the piezoresistor powder comprises, by weight, 85-95% of zinc oxide and 5-15% of additive which comprises, by weight, 5-8% of manganese carbonate, 35-50% of bismuth oxide, 2-4% of tin dioxide, 15-25% of cobalt oxide, 5-10% of titanium dioxide, 1-3% of barium carbonate, 0.1-1% of strontium carbonate, 5-20% of boric acid, 2-10% of nickel sesquioxide and 0.1-1% of aluminum nitrate, and the binder comprises, by weight, 30-88% of paraffin, 5-30% of polymethyl methacrylate, 5-30% of ethylene-vinyl acetate copolymer and 2-10% of stearic acid; (2), subjecting the granules to injection molding to obtain the piezoresistor blank. The piezoresistor is high in uniformity and production efficiency and large and uniform in density.
Piezoresistor blank, preparation method thereof, piezoresistor and preparation method thereof
The invention discloses a piezoresistor blank, a preparation method thereof, a piezoresistor and a preparation method thereof. The preparation method of the piezoresistor blank includes (1), mixing 70-95wt% of piezoresistor powder and 5-30wt% of binder to be pug, cooling the pug to room temperature, and then breaking the pug into granules for injection molding, wherein the piezoresistor powder comprises, by weight, 85-95% of zinc oxide and 5-15% of additive which comprises, by weight, 5-8% of manganese carbonate, 35-50% of bismuth oxide, 2-4% of tin dioxide, 15-25% of cobalt oxide, 5-10% of titanium dioxide, 1-3% of barium carbonate, 0.1-1% of strontium carbonate, 5-20% of boric acid, 2-10% of nickel sesquioxide and 0.1-1% of aluminum nitrate, and the binder comprises, by weight, 30-88% of paraffin, 5-30% of polymethyl methacrylate, 5-30% of ethylene-vinyl acetate copolymer and 2-10% of stearic acid; (2), subjecting the granules to injection molding to obtain the piezoresistor blank. The piezoresistor is high in uniformity and production efficiency and large and uniform in density.
Piezoresistor blank, preparation method thereof, piezoresistor and preparation method thereof
ZHU YANJUN (author) / NIE MIN (author)
2015-11-25
Patent
Electronic Resource
English
IPC:
C04B
Kalk
,
LIME
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