MECHANO-RESPONSIVE COMPOSITION

摘要

The present invention provides a two-part mechano-responsive composition, comprising: Part I: a tetra-glycidyl amine multifunctional epoxy resin represented by the general formula (I);;;and Part II: a polythiol and an amine. The cured composition has a mechano-responsive property without adding any dyes or luminescence agents, and by subjected to mechanical stimuli, the cured composition changes its colour, and the colour is in the visible spectrum range, which can be easily checked with naked eyes; and the colour change is reversible.

主权项

1. A two-part mechano-responsive composition, comprising:
Part I: a tetra-glycidyl amine multifunctional epoxy resin represented by the general formula (I);wherein R1 represents a linear or branched, unsubstituted or substituted alkylene group having 1 to 10 carbon atoms, an unsubstituted or substituted arylene group having 6 to 20 carbon atoms, or a combination of the alkylene and the arylene; and
R2, R3, R4 and R5, independently each other, represent a direct bond, a linear or branched, unsubstituted or substituted alkylene group having 1 to 10 carbon atoms, an unsubstituted or substituted arylene group having 6 to 20 carbon atoms, or a combination of the alkylene and the arylene;and
Part II: a polythiol and as catalyst an amine;wherein more than 50% of the polythiol carries at least 3 thiol groups per molecular.