Temperature it is a bottleneck for all power electronics in general, that’s a fact. We need safer, more efficient, and reliable electronics but as we are taking power density values to the limits, thermal performance becomes a tricky topic. Not only because thermal compounds have to fit all these technical requirements ( …
The competition for vehicle charging is not only played in the field of power (more power, less time) but also in the format… Cable vs Wireless, where each technology uses its own weapons and faces its disadvantages to position itself as the leading technology. If we talk about the charging method par …
How classify COMPOSITE MATERIALS? A simple scheme for classifying composite materials consists of three divisions: 1. Particle-reinforced composites. Particle-reinforced composites are subdivided into large-particle reinforced and dispersion-consolidated. This distinction is based on the consolidation or reinforcement mechanism. The term “large” is used to indicate that the matrix-particle interactions cannot be described at …
Compression molding is a process of molding in which a feeding material is placed into an open, heated mold cavity. The mold is then closed with a top plug and compressed with large hydraulic presses in order to have the material contact all areas of the mold. The charge cures in the …
Thermoplastics Processing Methods Thermoplastics are materials which soften when heated and can then be formed whilst soft. After cooling they becoming rigid take up the applied form. The softening and forming processes are reversible. Thermoplastics are probably the most widely used type of polymer. The group includes most of the “commodity” plastics …
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 …
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 …
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