New heat-resistant polytriazole adhesives: investigation of adhesion of polytriazole resins to metals

Abstract

Crosslinkable polytriazole resins (CPTs) were synthesized by 1,3-dipolar cycloaddition reaction between azide and alkyne monomers. Adhesion properties of CPTs and an epoxy resin to different metal substrates (copper, iron and aluminium) were evaluated in terms of the tensile lap shear strength. CPTs to aluminium and iron substrates have higher adhesion strength than those to copper substrates. The effect of temperature and humidity on adhesion strength has been investigated. The resin CPT-3 has the best heat resistance among CPTs, whose retentions of adhesion strength are approximate 80% at 150°C and 70% at 180°C to all the substrates. CPTs have high adhesion properties at high temperature and humidity as compared with an epoxy resin.

Glass–Metal Adhesive Polymers from Copper(I)‐Catalyzed Azide–Alkyne Cycloaddition

“…This process is a reliable method for the rapid assembly of functional molecules, being highly tolerant to variations in the nature of the components and the reaction conditions used to join them. Taking advantage of the well‐known property of triazoles to bind to metal surfaces, and the availability of catalytically active Cu(I) at the surface of metallic copper in air, we previously used CuAAC chemistry to create strong adhesives between copper‐containing surfaces . We suggested that an important aspect of the underlying chemistry is the kinetic lability of the Cu(I)–triazole interaction, allowing the diffusion of Cu(I) ions through the developing polytriazole network, similar to radical diffusion in addition polymerization .…”

A new high performance novolac-based polytriazole resin

“…Our laboratory has been engaged in the preparation and modification of high performance PTAs and their derivatives since 2002. 26 –31 A series of thermosetting PTA resins with good heat resistance and high mechanical properties have been explored .…”