Cured epoxy resins are the basic components or end products, as well as a colloquial name for the epoxide functional group or any glue. Epoxy resins, also known as poly epoxides, are a class of polymers containing reactive pre polymers and epoxide groups. Epoxy resins can be reacted by catalytic homopolymerisation (cross-linked) either themselves, or poly functional amines, acids (and acid anhydrides), phenols, thiols, including alcohol and a wide range of co-reactants. Hardeners or curatives are often referred to as the co-reactants, and the cross-linking reaction is usually referred to as curing. Poly epoxides with poly functional hardeners or action they are often very high mechanical properties, temperature and chemical resistance, forms a thermosetting polymer. Glue, metal coatings, electronics / electrical components / LED, the use of high-tensile electric insulators, paint brushes manufacturing, fiber-reinforced plastic materials and the building has a wide range of applications, including adhesives.
Epoxy resins are generally low molecular weight pre-polymers or high molecular weight polymers containing at least two epoxide groups. Glycidyl or oxirane group is also sometimes referred to as the epoxide group.
A wide range of epoxy resins are produced industrially. The roots of some plant sources of raw materials for the production of epoxy resins are now commercially available (epichlorohydrin is used to, eg. plant derived glycerine), there are limits, mostly petroleum emerged today.
Epoxy resins are polymeric or semi polymeric materials, and the results are not as rare as the chain length of the variable polymerisation reaction used to produce them, because of the existence of pure substances. High purity grades to specific applications, such as can be produced using a distillation method of purification. One downside of the high purity liquid classes to enable the processing of their most common structure which is necessary to melt, their tendency to form crystalline solids.
Epoxy resins, is an important feature of the epoxide content. This is usually the resin of 1 kg (Eq./kg) or the number of equivalents epoxide equivalent weight of glue, are shown to have the equivalent of 1 mole of epoxide resin grammes in weight (which is the equivalent weight, as g / mol). One measure is just another change:
Equivalent weight or the number of epoxide resins, curing adhesive for use with the co-reactant (hardener) is used to calculate the amount. Epoxies generally achieve maximum physical properties of stoichiometric or near stoichiometric amounts of cure cured.
Additives, plasticizers, or other classes, materials for thermoset polymer materials, epoxy resin blending of different classes, as well as in the processing and / or to achieve the final properties, or to reduce the cost of common. Blending, additives and fillers for use in the formulation is often referred to as.