epoxy resin - a substance having a high resistance to acids, alkalis and halogens.It is a synthetic oligomer.You can use it to glue virtually any material.The liquid is a transparent epoxy resin having a yellow-orange color, and after hardening it turns brown and extremely safe for the health.However, to use it where there may be the potential contact with solvents, the sol fraction is washed away, it is impossible.In liquid form, it is very toxic, so its use requires adherence to a certain set of rules.
course for bonding utensils or other items that come into contact with food or drinking water, it can not be used for this, there are other substances.However, due to their properties, the epoxy resin is an indispensable tool in a very broad range of industries.Two main uses of the material: as an adhesive and impregnation.With its help protect against corrosion of concrete, metal, make molds, glue variety, even a very important part in almost all branches of engineering.Epoxy resin and fiberglass are the starting materials for the production of glass fiber reinforced plastic, widely used in construction, boat- and air.Also, the first is used to fill in electronics and even in the design.
epoxy resin is used together with a hardener.Where heat treatment is unacceptable in a domestic environment, in small workshops used cold substance.And for important products intended for use at high static and dynamic loads in corrosive environments - hot curing agents.In this case, a denser grid, fastening polymer molecules.Furthermore, there are epoxy resin and hardener, designed specifically for the conditions of high humidity, salty water.
work with it at home, you need to understand that when you connect it, and the hardener an exothermic reaction, the greater the weight of the polymer, the more heat is produced.In connection with this it is necessary to choose the right amount of material and to correlate it with the purpose of use as a result should be uniform (no bubbles) solid substance.Furthermore, the reaction of the resin and the hardener is irreversible, and thereafter thermoset in contrast to the thermoplastic can not melt or dissolve to rework result.The most common and affordable materials for curing epoxy materials now considered PEPA, DETA, TETA, TEPA and №1 (dissolved in ethyl alcohol, hexamethylene diamine).Due to the fact that conventional two-component connection - a rather fragile thing, its flexibility is increased by the addition of another constituent.This element is called "impact modifier", it can have a different chemical composition and, depending on this, have certain characteristics.True chemists have discovered materials that have the ability to act both as a hardener, and impact modifier.
