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 …
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: …
The knowledge of the thermal conductivity and/or the thermal diffusivity is more and more required in many industrial fields. As a matter of fact, these are the most important parameters when heat transfer processes are involved. In the power generation industries, materials are selected primarily considering their thermal properties. In the automotive …
The applications of high-performance plastic are playing an important role in the automotive industry these days. It is constantly increasing and this trend is expected to continue. The main aspect in choosing the high-performance plastic materials in relation to other materials used in automobiles are the design of automobiles, their functionality and …
Globally, 165,000 tons of silicone products are used in the transportation sector annually, which includes automotive, marine, aviation, and aerospace industries. Silicone rubber, resin elastomers, sealants, lubricants, and plastic additives are used extensively in spacecraft, automotive, aviation, and marine vessels, due to their strength, adhesion, and durability. Silicones contribute immensely to the …
The properties of insulating materials are enumerated and discussed as under[1]: Electrical Properties Thermal Properties Chemical Properties Mechanical Properties Electrical Properties of Insulating Materials[2, 3]: 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 …
Long-term [1],reliable protection of sensitive electronic components is essential to many electronic applications today and prevents premature failure. Increasingly small systems and rising circuit densities have resulted in hotter operating temperatures, and driven demand for high-performance solutions for heat dissipation . Methods of Embedding[2] The following table shows the different technologies currently applied to …
Low surface energy materials Certain polymeric substrates are difficult to bond. The main reason that these materials present problems is their low surface energy which is unlike metals, ceramics, and most other polymers. The low surface energy simply prevents conventional adhesives from making intimate contact (wettability) with the substrate surface and this reduces adhesion. Image 1: a) Surface Free …
The non‐steady‐state or transient technique records a measurement during the heating process. The method determines thermal conductivity properties by means of transient sensors. These measurements can be made relatively quickly, which garners an advantage over steady‐state techniques. For this reason, numerous solutions have been derived for the transient heat conduction equation by …
TDS – COOLMAGPLAST – EN 0.1 New Thermally Conductive Compound, Coolmagplast TM COOLMAGPLAST is a thermally conductive, electrically non-conductive PA6 based flame retardant grade. COOLMAGPLAST is lightweight, net-shape moldable and allows design freedom in applications previously restricted to metals and ceramics. COOLMAGPLAST combines thermal conductivity and electrical insulation in standard pellet form …
Thermal properties Heat flows across temperature differences. There are three modes of heat transfer: conduction, radiation, and convection. Conduction and radiation are fundamental physical mechanisms, while convection is really conduction as affected by fluid flow. Conduction is an exchange of energy by direct interaction between molecules of a substance containing temperature differences. …
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