Weak bonding between dissimilar material layers leads to structural failure. Improving adhesion prevents mechanical separation and environmental degradation in automotive components.

Conventional two-component polyurethane binders rely on isocyanates which react prematurely with environmental moisture, causing bubbling and bond failure. Utilizing cyclothiocarbonate and carbodiimide chemistries eliminates this specific degradation pathway and improves storage stability.

Slow structural development during the transition from melt to cured state causes bond failure under immediate load. Rapid initial cohesion prevents substrate shifting and increases manufacturing throughput.