Epoxy

Epoxy

First, the definition of the resin

    Generally refers to the resin after heat softening or melting range , softening the external force has a tendency to flow , at room temperature is solid, semi-solid , sometimes it can be a liquid organic polymer. Broadly speaking, can be used as raw material for plastics processing are referred to any polymer resin .

Natural resins and synthetic resins points. Natural resin is defined by the nature of the animal and plant exudates resulting amorphous organic materials , such as rosin , amber and shellac . Synthetic resin refers to a resin product obtained by chemical synthesis of simple organic compounds , or some natural products obtained by chemical reaction .

Second, the classification of the resin

Many classification methods resin , in addition to the resin source can be divided into natural resins and synthetic resins , but also by the composition of the synthesis reaction and the main chain to classify .

1, according to the resin synthesis reaction classification

This method can be added into the resin and condensation polymers . Addition polymer means a polymer prepared by the reaction of addition polymerization , the same molecular formula of the monomer of formula and the link structure , such as polyethylene, polystyrene, polytetrafluoroethylene and the like.

Polycondensation reaction means a polymer obtained by the condensation polymerization of the structural unit of the formula and the monomer of formula is different , such as phenolic resins, polyester resins, polyamide resins.