Underwater self-adhesive adhesive and method for producing same

An underwater self-adhesive adhesive was prepared by combining hydrophilic monomers, hydrophobic monomers and ionic liquids in a crosslinking reaction, which solved the problem of unstable underwater bonding and achieved strong adhesion and long-term stability under no external force conditions.

CN116836656BActive Publication Date: 2026-06-26THE CHINESE UNIV OF HONG KONG (SHENZHEN)
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
THE CHINESE UNIV OF HONG KONG (SHENZHEN)
Filing Date
2023-08-21
Publication Date
2026-06-26

AI Technical Summary

Technical Problem

Existing underwater adhesives suffer from unstable bonding due to the hydration layer hindering interfacial interlocking during the bonding process, and existing technologies are difficult to achieve long-term underwater bonding without external force.

Method used

An underwater auto-adhesive adhesive is prepared by combining hydrophilic monomers, hydrophobic monomers, ionic liquids and crosslinking agents, and by initiating a crosslinking reaction through light or heat. This forms a crosslinked polymer network, and strong adhesion is achieved by inducing the aggregation of hydrophobic functional groups by water molecules.

Benefits of technology

It achieves automatic underwater adhesion without external force, and the bonding strength increases over time, exhibiting good stability and durability, making it suitable for complex underwater engineering scenarios.

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Abstract

The application provides an underwater automatic adhesive and a preparation method thereof, and relates to the field of adhesives. The underwater automatic adhesive comprises the following raw materials: a hydrophilic monomer, a hydrophobic monomer, an ionic liquid, a crosslinking agent and an initiator; the hydrophilic monomer comprises one or more of a hydrophilic acrylate monomer, an acrylamide monomer, an acrylic acid monomer and a vinyl monomer; the hydrophobic monomer comprises one or more of a hydrophobic acrylate monomer and a vinyl monomer; the ionic liquid comprises a hydrophobic imidazole ionic liquid compatible with the hydrophilic monomer and the hydrophobic monomer; and the crosslinking agent comprises one or more of a multifunctional vinyl crosslinking agent, a multifunctional acrylate crosslinking agent and a multifunctional acrylamide crosslinking agent. The underwater automatic adhesive provided by the application has the property of spontaneous adhesion.
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