A class of polymers whose repeating units are characterized by ester groups and imide groups. It is usually obtained by imidization of polyester amic acid, and has the characteristics of high temperature resistance and good processability. Polyesterimide PEI is extensively…
Polyurethane often abbreviated PUR and PU) refers to a class of polymers composed of organic units joined by carbamate (urethane) links. In contrast to other common polymers such as polyethylene and polystyrene, polyurethane is produced from a wide range of…
Acetal, a general term for a class of organic compounds, is the product of the condensation of one molecule of aldehyde and two molecules of alcohol, such as acetaldehyde diethyl acetal, with a boiling point of 104 °C; benzaldehyde dimethyl…
An Aluminium alloy (or aluminum alloy; see spelling differences) is an alloy in which aluminium (Al) is the predominant metal. The typical alloying elements are copper, magnesium, manganese, silicon, tin and zinc. There are two principal classifications, namely casting alloys…
An electrical motor is one kind of machine which is used to change the energy from electrical to mechanical. Most of the motors work on the principle of interaction among the electric current as well as the magnetic field within…
DC micro motors and conventional DC motors is in the rotor. The rotor does not have an iron core but consists of a self-supporting skew-wound copper winding. This featherweight rotor has an extremely low moment of inertia, and it rotates…
There are also special grades of enamel for specific applications. For example, there is “self-bonding” type of enamel which has an additional layer of adhesive. After a winding is made, the formed wires can be made to adhere to each…
The production process involves several stages: drawing the wire – from a thicker gauge to the target diameter (in several steps) annealing – to remove mechanical stress coating – with raw enamel (liquid resin) curing – drying off the volatile…
Communication Coil designs and produces custom, high reliability Filter Networks, RF Coils, Chokes, Inductors, Baluns, Toroids and Power Magnetics for communications and signal processing equipment in military, industrial, avionics, satellite, telemetry, marine, GPS and commercial applications.
Polyurethane (PU) enameled wire is an important variety in enameled wire products due to its direct solderability and hydrolysis resistance. The development of PU-enameled wire with a low friction coefficient is the guarantee of ultrahigh processing speed and the long…