Anti-adhesion properties of silicone rubber surfaces are critical in marine engineering, medical devices, and other fields. Surface grafting and microstructure regulation can significantly enhance resistance to biofouling and anti-stick performance.

1. Construction of Super-Slippery Surfaces

A "grafting-post modification" strategy was used to graft polytetrafluoroethylene (PTFE) segments onto silicone rubber surfaces, forming low-surface-energy coatings. Contact angle tests showed a water contact angle of 165° and a sliding angle <5°. After 30 days of immersion in simulated seawater, biofilm adhesion was reduced by 90%, making it suitable for ship anti-fouling coatings.

2. Biomimetic Lotus Leaf Structure

A micro-nano hierarchical structured silicone rubber surface was prepared via nanoimprinting technology and modified with perfluorosilane to achieve superhydrophobic anti-adhesion. Experiments showed that the adhesion force to crude oil was only 0.5 mN/cm, applicable to anti-scaling in oil pipelines.

3. Dynamic Anti-Adhesion System

A light-responsive silicone rubber coating was developed that transitions from hydrophobic (contact angle 120°) to hydrophilic (contact angle 40°) under UV light (365 nm). This reversible wettability change makes it suitable for controlled drug release carriers, with a 4-fold increase in drug release rate under light conditions.



Low compression set precipitated silicone rubber