High-shock-resistance low-precipitation phosphate ceramic structure adhesive and preparation method thereof

A high-shock-resistant, low-precipitation phosphate ceramic structural adhesive was prepared by using a composite filler system of spherical alumina, lamellar alumina, nano-zirconia, and layered zirconium phosphate, combined with graded dispersion and gradient sintering processes. This adhesive solves the problem of insufficient performance of ceramic components under high temperature, corrosion, and vibration conditions, and achieves a synergistic balance of high shock resistance, low precipitation, high temperature resistance, corrosion resistance, and high sealing reliability.

CN121850706APending Publication Date: 2026-04-14FEATURE-TEC (WUXI) FILTRATION TECH CO LTD
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Patent Information

Application Number
CN202610007656.9
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-01-06
Publication Date
2026-04-14

AI Technical Summary

Technical Problem

Existing ceramic component bonding materials have insufficient performance under complex working conditions such as high temperature, corrosion, and vibration, and cannot simultaneously achieve high seismic resistance, low precipitation, high temperature resistance, corrosion resistance, and high sealing reliability, thus limiting the application of ceramic components in high-end fields.

Method used

A composite filler system consisting of spherical alumina, lamellar alumina, nano-zirconia, and layered zirconium phosphate was used, combined with a graded dispersion and gradient sintering process, to prepare a high-shock-resistant, low-precipitation phosphate ceramic structural adhesive. The phase transformation toughening of nano-zirconia and the skeletal support of lamellar alumina enhanced the adhesive's impact and thermal shock resistance, while the layered zirconium phosphate fixed metal ions and suppressed ion precipitation.

Benefits of technology

It significantly improves the adhesive's impact and thermal shock resistance, reduces ion release, is suitable for high-temperature environments, is resistant to acid and alkali corrosion, has a moderate curing temperature for easy construction, and meets the requirements for long-term stability and sealing reliability under high-temperature conditions.

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Abstract

The invention provides a high-shock-resistance low-precipitation phosphate ceramic structure adhesive which comprises the following components in parts by weight: 100 parts of aluminum dihydrogen phosphate, 8-15 parts of zinc oxide powder, 35-45 parts of flaky aluminum oxide powder, 5-10 parts of nano zirconium oxide powder and 0.5-2 parts of layered zirconium phosphate powder. The ceramic further comprises 0.5-2 parts of titanium oxide powder and 5-10 parts of spherical aluminum oxide powder. The invention also discloses a preparation method and application of the adhesive. The adhesive disclosed by the invention can work for a long time at 500 DEG C or below, has high strength retention rate at high temperature, and solves the problem of easy failure at high temperature; through the toughening design, the impact resistance and thermal shock resistance are remarkably improved, and cracking in use is effectively prevented; the paint has good stability to acid, alkali, solvents and other chemical media, and is suitable for partial corrosive environments; the ion precipitation rate is extremely low, and the strict requirements of the fields of biological medicine, food and the like on the material purity are met; and the curing temperature is moderate, a precise matrix is not easy to damage, and on-site construction and complex structure bonding are facilitated.
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