Araldite 2021 Acrylic Structural Adhesive. Araldite 2021 is a two-component, room-temperature rapid-curing acrylic adhesive with excellent resistance to chemical solvents and water, as well as high shear and peel strength. It is widely used for bonding plastics, composites, and metals. Features of Araldite 2021: Initial curing time of 4 minutes; broad applicability for bonding plastics, composites, and metals; high shear and peel strength; outstanding resistance to water and chemical media; fast curing with good gap-filling capability; suitable for bonding objects with service temperatures up to 100°C. Applications of Araldite 2021: Ideal for rapid bonding of various substrates. In Austria, used for bonding interior parts of ambulances; substrate ABS; compared to Sikaflex 252, offers better adhesion, faster curing, and room-temperature curing. In the UK, used for securing outdoor billboards; excellent weather resistance, UV resistance, and moisture resistance; easier to use than conventional double-sided tape, reduces weight, and improves appearance; bonds different substrates. Araldite is one of the adhesive product brands of Huntsman Corporation, and Araldite is also the world's first epoxy adhesive brand. Huntsman produces a variety of high-quality industrial products to improve the quality of human life.