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Curing is a chemical process employed in polymer chemistry and process engineering that produces the toughening or hardening of a polymer material by cross-linking of polymer chains. [1] Even if it is strongly associated with the production of thermosetting polymers , the term "curing" can be used for all the processes where a solid product is ...
Down investigated various room-temperature-cure epoxy resin adhesives suitable for use in glass conservation, testing their tendency to yellow. A fundamental molecular understanding of epoxy yellowing was achieved, when Krauklis and Echtermeyer discovered the mechanistic origin of yellowing in a commonly used amine epoxy resin, published in ...
In materials science, a thermosetting polymer, often called a thermoset, is a polymer that is obtained by irreversibly hardening ("curing") a soft solid or viscous liquid prepolymer . [1] Curing is induced by heat or suitable radiation and may be promoted by high pressure or mixing with a catalyst .
The main discussion of these abbreviations in the context of drug prescriptions and other medical prescriptions is at List of abbreviations used in medical prescriptions. Some of these abbreviations are best not used, as marked and explained here.
Diethylenetriamine is a common curing agent for epoxy resins in epoxy adhesives and other thermosets. [4] It is N-alkylated upon reaction with epoxide groups forming crosslinks. Structure of a triamine-cured epoxy glue. The resin's epoxide groups have all reacted with the hardener.
Although it is widely believed that this phase transition occurs at 32 °C (90 °F), [3] the actual temperatures may differ 5 to 10 °C (or even more) depending on the polymer concentration, [3] molar mass of polymer chains, polymer dispersity as well as terminal moieties.
The exposure time is a function of exposure dose and film thickness. After exposure the SU-8 needs to be baked again to complete the polymerization. This baking step is not as critical as the prebake but the rising of the temperature (again to 95 °C) needs to be slow and controlled. At this point the resist is ready to be developed.
Like other diamines or amines in general, it is a curing agent for epoxy resins. When used in coatings applications the higher cost compared to other amines is justified by the enhanced UV stability and thus lower yellowing tendency.