Thermoplastics and Thermo-setting bonding wire
The thermo-setting bondings are substances whom shape is definitivey fixed consecuting a chemical reaction due to heat increase. This action can be operated according to 3 different ways :
Polymerisation involving links among monomers forming a tridimentional network.
Creation of a tridimentional network tying the chains either in a direct way (for example under irradiation) or in an undirect way (under some substances action).
Going through an intermediate state of a small tridimensional network before reticulation.(For example: Thermo-setting bonding moldering powders.)
In all cases reaction is irreversible: for example a subsequent heating action does not involve any softening, but more or less important link ruptures can appear according to temperature .(burning damages)
Examples: ( epoxides, melanin, phenoplast, non saturated polyesters, urea, formalin.)
The large range of different products is consecutive to the fact each designation is corresponding to a a group of substances with different polymerization rates. (monomers proportion, monomers features, type of production process, additives, etc...)
Operating mode is essential.
About AMR
Joule Effect Polymerization
Direct Induction
AMR machines
Bench tests for motors
Windings repairs
Comparisons
Infos miscellanious
this page in french
home page