17 ноября, 2015 
Pokraskin Epoxy adhesives in anchoring have proven to be durable, to have a long shelflife, and to undergo little shrinkage during curing. By national standards, the epoxy resin is designated as component ‘A’ and the curing agent as ‘B’.
Polyester adhesives for this type of application usually consist of a polyester resin and a catalyst, typically dibenzoyl peroxide. Because of their chemical nature, polyester adhesives usually have faster exothermic reactions and curing times than do epoxy adhesives. However, the limitations of polyester adhesives can include a short shelf life, a tendency to degrade under exposure to ultraviolet light, and a tendency to selfpolymerize (without the addition of a catalyst) at elevated temperatures.
A vinyl ester adhesive is a thermosetting plastic consisting of a vinylester resin and a catalyst, typically dibenzoyl peroxide. Vinylester adhesives usually have exothermic reactions and curing times, which are faster than those of epoxy adhesives, but slower than those of polyester adhesives.
Hybrid systems consisting oforganic and inorganic bonding agents have recently been developed. The polymerization reaction of the resin component ensures good bonding and a rapid curing injection system with good handling characteristics. The cementitious reaction especially improves mechanical properties in the cured state at higher temperatures. The combined action of the two components results in negligible material shrinkage.
8.3.3
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