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Method for preparing insulation ceramic chip in ultrasonic transducer

A technology of insulating ceramics and transducers, applied in the field of ceramic materials, can solve the problems of potential safety hazards and the inability of insulating ceramic sheets to achieve complete insulation, and achieve the effect of improving the insulation effect

Inactive Publication Date: 2015-05-20
WUXI DINGSHI ELECTRONICS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, with the development of electronic circuit technology, the original PCB circuit board can no longer meet the requirements of industry development, and then countries began to study and seek new materials to replace polymer materials as the substrate of circuit boards, and later the cost was lower. The 96% alumina ceramic substrate has been widely used
[0003] However, the insulating ceramic sheets widely used at present cannot achieve complete insulation under the condition of high frequency and high voltage, and there are potential safety hazards

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Embodiment 1: A kind of preparation method of insulating ceramic sheet in ultrasonic transducer, raw material is the aluminum oxide that weight ratio is 99%, the calcium oxide of 0.3%, the silicon dioxide of 0.5% and the magnesium oxide of 0.2%, specific steps as follows:

[0020] (1) Initial grinding: Weigh the various raw materials required according to the formula, feed them into the ball mill, and fully ball mill for 30 hours;

[0021] (2) Secondary ball milling: In the ball mill, the ratio of primary ball milling material and acrylic polymer is 55:10, and the rest is water. After mixing, carry out secondary ball milling for 3 hours;

[0022] (3) Forming: the secondary material is tape-cast on the tape casting machine to form an insulating ceramic sheet blank, and the blank is cut, stacked, trimmed, and shaped;

[0023] (4) Low-temperature degumming: process the embryo body at 300°C to remove the acrylic polymer for 24 hours;

[0024] (5) Sintering: put the biscui...

Embodiment 2

[0027] Embodiment 2: A kind of preparation method of insulating ceramic sheet in ultrasonic transducer, raw material is the aluminum oxide that weight ratio is 99%, the calcium oxide of 0.2%, the silicon dioxide of 0.6% and the magnesium oxide of 0.2%, specific steps as follows:

[0028] (1) Initial grinding: Weigh the various raw materials required according to the formula, feed them into the ball mill, and fully ball mill for 32 hours;

[0029] (2) Secondary ball milling: In the ball mill, the ratio of primary ball milling material and acrylic polymer is 55:10, and the rest is water. After mixing, carry out secondary ball milling for 3 hours;

[0030] (3) Forming: the secondary material is tape-cast on the tape casting machine to form an insulating ceramic sheet blank, and the blank is cut, stacked, trimmed, and shaped;

[0031] (4) Low-temperature debinding: process the embryo body at 400°C to remove the acrylic polymer for 30 hours;

[0032] (5) Sintering: Put the biscui...

Embodiment 3

[0035] Embodiment 3: A preparation method of an insulating ceramic sheet in an ultrasonic transducer, the raw materials are 99% aluminum oxide by weight, 0.4% calcium oxide, 0.5% silicon dioxide and 0.1% magnesium oxide, specific steps as follows:

[0036] (1) Initial grinding: Weigh the various raw materials required according to the formula, feed them into the ball mill, and fully ball mill for 36 hours;

[0037] (2) Secondary ball milling: In the ball mill, the ratio of primary ball milling material and acrylic polymer is 55:10, and the rest is water. After mixing, carry out secondary ball milling for 3 hours;

[0038] (3) Forming: the secondary material is tape-cast on the tape casting machine to form an insulating ceramic sheet blank, and the blank is cut, stacked, trimmed, and shaped;

[0039] (4) Low-temperature degumming: process the embryo body at 500°C to remove the acrylic polymer for 36 hours;

[0040] (5) Sintering: Put the biscuit into the sintering furnace, ra...

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Abstract

The invention provides a method for preparing an insulation ceramic chip in an ultrasonic transducer, which comprises the raw materials: 99% of alumina, 0.2-0.4% of calcium oxide, 0.4-0.6% of silicon dioxide and 0.1-0.3% of magnesium oxide. The method comprises the following steps: primarily grinding, performing secondary ball milling, moulding, performing rubber discharging, sintering, and processing to obtain the insulation ceramic chip finished product. According to the preparation method of the insulation ceramic chip in the ultrasonic transducer, the prepared insulation ceramic chip can reach insulation lifting effect under high frequency and high voltage, and is the best material for sound conduct in same kinds of products.

Description

technical field [0001] The invention relates to the technical field of ceramic materials, in particular to a method for preparing an insulating ceramic sheet in an ultrasonic transducer. Background technique [0002] PCB circuit, that is, printed circuit board, also known as printed circuit board, is the provider of electrical connections for electronic components. Its development has a history of more than 100 years; its design is mainly layout design; the main advantage of using circuit boards is that it greatly reduces wiring and assembly errors, and improves automation and production labor rates. However, with the development of electronic circuit technology, the original PCB circuit board can no longer meet the requirements of industry development, and then countries began to study and seek new materials to replace polymer materials as the substrate of circuit boards, and later the cost was lower. The 96% alumina ceramic substrate has been widely used. [0003] Howeve...

Claims

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Application Information

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IPC IPC(8): C04B35/10C04B35/622
Inventor 张玉
Owner WUXI DINGSHI ELECTRONICS TECH CO LTD
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