INTRODUCTION OF EPOXY RESIN
Epoxy resin is a kind of
thermosetting (solid) resin. When main agent is blended with the
hardener of appropriate ratio, after cross linkage for hardening, a
network structure of three-dimensional space is formed. Therefore,
this product has equipped with a special physical property, mechanical
property, and chemicals-resistant, etc.
The main agent of Epoxy resin
generally comes from epichlorohydrin and bisphenol A (or its equivalent
derivative) after getting through an appropriate reaction and
ploymerization, the main agent product of Epoxy resin with differrnt
molecular weights can be obtained, and its main reaction is as follows:
When n=0, its molecular weight is
340g/mole. and when n=10, then its molecular weight is 3000g/mole.
Therefore, the size of molecular weight is decided by the number of n.
Generally, there are following six properties can be based on to choose the