Manufacturing method of pyroelectric ultra-thin ceramic chip and application of pyroelectric ultra-thin ceramic chip to sensor

A technology of pyroelectric ceramics and a production method, which is applied in the direction of electric radiation detectors, instruments, scientific instruments, etc., can solve the problems of low production efficiency and high production cost, and achieve the effect of reduced production cost and good performance consistency

Active Publication Date: 2022-03-01
SENBA SENSING TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Aiming at the deficiencies of the prior art, the present invention provides a manufacturing method of pyroelectric ultra-thin ceramic sheet and its application on sensor, which has the advantages of low production cost , good performance consistency and other advantages, solve the problem of low production efficiency and high production cost

Method used

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  • Manufacturing method of pyroelectric ultra-thin ceramic chip and application of pyroelectric ultra-thin ceramic chip to sensor
  • Manufacturing method of pyroelectric ultra-thin ceramic chip and application of pyroelectric ultra-thin ceramic chip to sensor
  • Manufacturing method of pyroelectric ultra-thin ceramic chip and application of pyroelectric ultra-thin ceramic chip to sensor

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Embodiment 1

[0034] Embodiment 1, the manufacturing method of the pyroelectric ultra-thin ceramic sheet involved in this embodiment is as follows:

[0035] 1) Add 5000g of pre-fired pyroelectric ceramic powder, 0.5-5wt% sintering aid, 40% ethanol and toluene mixed solution, 0.5wt% KD-1 or other dispersant, and add it to the inside of a 2L nylon ball mill tank And carry out ball milling and mixing for 4-5 hours, add 4-8% PVB binder, continue ball milling for 12-18 hours, measure the particle size with a laser particle size analyzer, and make the particle size within the range of D50=1.2um±0.1um, and pass through 400 mesh Stainless steel screen discharge;

[0036] 2) Vacuumize the slurry for defoaming, and control the viscosity of the slurry at 400cps±100cps, use steel belt casting to form a ceramic green film tape with a thickness of 20-50um, and then cut the film tape into a 200*200mm green sheet. The film strips are cross-laminated in different directions consistent with or perpendicular t...

Embodiment 2

[0044] Embodiment two, the preparation method of the pyroelectric ultra-thin ceramic sheet involved in this embodiment is as follows:

[0045] 1) Add 5000g of pre-fired pyroelectric ceramic powder, 0.5-5wt% of sintering aid, 50% of ethanol and toluene mixed solution, 1.0wt% of KD-1 or other dispersants, into a 10L nylon tank and Use a horizontal planetary mill, mix for 5-6 hours, add 4-8% PVB binder, continue ball milling for 12-18 hours, measure the particle size with a laser particle size analyzer, and make the particle size within the range of D50=1.2um±0.1um, and Discharge through 400 mesh stainless steel screen;

[0046] 2) Vacuumize the slurry for defoaming, and control the viscosity of the slurry at 400cps±100cps, use steel belt casting to form a ceramic green film tape with a thickness of 20-50um, and then cut the film tape into a 200*200mm green sheet. The film strips are cross-laminated in different directions consistent with or perpendicular to the casting directio...

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Abstract

The invention relates to the technical field of electronic functional ceramics, and discloses a manufacturing method of a pyroelectric ultrathin ceramic chip and application of the pyroelectric ultrathin ceramic chip to a sensor, and the manufacturing method comprises the following steps: 1) adding pre-sintered pyroelectric ceramic powder, a sintering aid, a 40-50% ethanol and toluene mixed solution and a 0.5-1.0% KD-1 dispersing agent into a ball milling tank, and carrying out ball milling and mixing for 4-6 hours, after 4-8% of PVB adhesive is added, ball milling continues for 12-18 h, the particle size is measured through a laser particle analyzer, the particle size D50 is within the range of 1.2 [mu] m +/-0.1 [mu] m, and discharging is conducted through a 400-mesh stainless steel screen; (2) vacuumizing and defoaming the slurry, controlling the viscosity of the slurry to be 400cps +/-100cps, carrying out tape casting by adopting a steel belt to form a ceramic green film belt with the thickness of 20-50 microns, then cutting the film belt into blank sheets with the size of 200 * 200mm, and carrying out crossed lamination on the film belt according to different directions which are consistent with or vertical to the tape casting direction; the ultra-thin pyroelectric ceramic chip manufactured by the method is good in performance consistency, and the effects of simplicity, convenience, high-efficiency production and low-cost manufacturing are achieved.

Description

technical field [0001] The invention relates to the technical field of electronic functional ceramics, in particular to a method for manufacturing a pyroelectric ultra-thin ceramic sheet and its application in a sensor. Background technique [0002] The pyroelectric passive infrared sensor is a sensor that detects the temperature change of the moving human body and objects. At present, the pyroelectric infrared sensor is widely used in various automatic control devices, except for the well-known corridor automatic switch and anti-theft alarm. In addition to applications, the application prospects in more fields are promising, such as: air conditioners and water dispensers that will automatically shut down when there is no one in the room, TVs that can judge that no one is watching or the audience is asleep. Applications on doorbells, desk lamps that automatically turn off after people go to sleep, night lights, wardrobe lights, balcony lights, and elderly monitoring have rea...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/622C04B35/64G01J5/34G01J5/00
CPCC04B35/622C04B35/64G01J5/34G01J5/00G01J5/0025C04B2235/6025C04B2235/6567
Inventor 单森林
Owner SENBA SENSING TECH CO LTD
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