Introduction
Thermosets refer to the set of materials formed by polymers joined by chemical bonds acquiring a highly cross-linked final structure. The highly cross-linked structure of thermoset materials is directly responsible for the high mechanical and physical resistance (stresses or loads, temperature…) of these materials compared to thermoplastics and elastomers. On the other hand, it is this highly cross-linked structure that provides low elasticity, giving these materials their characteristic brittleness.
What is a Thermoset? Thermoset plastics, or thermoset composites, are synthetic materials that strengthen when heated, but cannot successfully be remolded or reheated after initial heat-forming or molding. After thermosets are molded, the resulting parts offer protection against high operating temperatures, corrosion, and chemical resistance. These material property benefits allow molded thermoset …
Electrical Properties of Insulating Materials Dielectric Constant (Permitivity) A dielectric is a material which has poor electrical conductivity but inherits an ability to store an electrical charge (due to dielectric polarization). The dielectric constant is a measure of the electrostatic energy stored in the insulating material per unit volume under one unit …
The term polymer degradation[1] refers to the processes induced by sunlight, heat and other atmospheric agents that lead to a modification of the polymer structure, which are normally accompanied by a decrease in the mechanical characteristics of the material. Due to complexity of the chemical structure, environmental agents will act according to: …
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