Mr. Sticky's Underwater Glue

Product Information

Unlike traditional sealants that require dry surfaces for application, Adiseal offers a convenient solution for projects involving water. Water molecules can form a hydration layer on the hydrogel surface or penetrate into the internal network of the hydrogel, leading to the detachment of the adhesive layer and the hydrolysis of the hydrogel polymer network. C) Schematic of the screening and recovery of the interfacial interaction of DOPA under different temperatures. Therefore, the precondition for the effective interfacial adhesion provided by the intermolecular force of the underwater adhesive is the ability to remove the hydration layer and to ensure the effective adhesion of hydrophilic groups.

Underwater Repair Adhesives - Aquabond

Carboxyl groups can mainly form hydrogen bonds and electrostatic interactions, and the ratio of the two intermolecular forces is also related to the protonation of carboxyl groups affected by pH.

Through experiments, it was found that the polymers synthesized from aliphatic diols with a carbon chain length of 8 have the best underwater adhesion properties.

Coacervation-driven instant paintable underwater adhesives Coacervation-driven instant paintable underwater adhesives

However, the hydroxylation of aromatic hydrocarbons in polymer hydrogels can form more hydrogen bonds, so it is necessary to comprehensively consider the effect of different ratios of intermolecular forces on the adhesion properties of hydrogels.If you have ever tried to chip a mussel off a seawall or a barnacle off the bottom of a boat, you will understand that we could learn a great deal from nature about how to make powerful adhesives. To sum up, sol-type hydrogels can achieve high underwater adhesion at present, but most gel curing still takes several hours, which greatly limits practical application. Due to the polyurethane group's ability to generate a strong hydrogen domain, the negative effect of improving the dispersion of water molecules is improved. When the hydrogel is applied underwater, the amino formed by the reaction of the isocyanate group with water rapidly reacts with other isocyanate groups to accelerate the cure.