Underwater Adhesive Holds Promise for Low-Cost Marine Repairs

A new adhesive bonds underwater in 10 seconds and withstands repeated use for years—potentially enabling affordable repairs in marine environments without specialized tools.

Engineers developed BP16TPB, an underwater adhesive that bonds to submerged surfaces within 10 seconds and achieves an initial strength of 1.1 million pascals. It maintains adhesion under a 2-kilogram static load for over three years of continuous underwater immersion and can be reused up to eight times. The adhesive also functions reliably in acidic, alkaline, and saline conditions—critical for marine applications—though it loses effectiveness above 70°C. Developed through a supramolecular ionic liquid formulation, BP16TPB was documented in a 2026 Nature Communications study by Hu et al. This proof-of-concept technology could enable low-cost repairs for submerged infrastructure, fishing gear, or disaster response in coastal communities where specialized tools are unavailable. Its ability to bond rapidly without tools directly addresses a key barrier to affordable marine maintenance. However, the adhesive’s performance varies with specific material surfaces, and the 3-year longevity claim applies only under controlled static load testing. Real-world deployment will depend on overcoming these limitations while scaling the technology for practical use. The next critical step is validating BP16TPB’s effectiveness across diverse marine materials and environmental conditions before potential commercialization.

Source: ScienceAlert