We synthesized novel strain-sensitive shielded polymers containing both reactive epoxides and molecular shields. These shielding PEG chains provide a steric barrier to an otherwise powerful and efficient crosslinking reaction between amines or thiols and epoxides. This approach to creating strain sensitive materials provides a facile route to creating strain responsive coatings and adhesives, using well-known and commercially available monomers. Through this we demonstrated, for the first time, a liquidto-solid transition accelerated under force using shielded reactive polymers. We showed that force stimulated gelation could be achieved with ultrasound. We further showed that steric shielding can create ultrahard materials. Suppressed gelation without force, combined with ultrasound sensitivity, make this polymer an ideal candidate for an adhesive in a heat or light sensitive application.