China-Africa Economic and Trade Expo into Africa (Nigeria) and the 18th China Engineering Technology Exhibition to be Held Soon

China-Africa Economic and Trade Expo into Africa (Nigeria) and the 18th China Engineering Technology Exhibition to be Held Soon

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2024

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Knowledge of fire prevention of cable laying

Knowledge of fire prevention of cable laying

Flame retardant wire and cable fire prevention mechanism: under the heat action of combustion reaction, the flame retardant located in the condensed phase thermal decomposition and heat absorption, so that the temperature rise in the condensed phase slows down, delays the thermal decomposition rate of the material, and at the same time, releases the chain reaction free radical blocker, so that the branch of the flame and chain reaction is interrupted, the gas phase reaction rate is slowed down, the temperature in the condensed phase is prevented, and the fire prevention effect is achieved;

26

2022

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Several advantages of copper core cable over aluminum core cable

Several advantages of copper core cable over aluminum core cable

Low resistivity: The resistivity of aluminum core cable is about 1.68 times higher than that of copper core cable. 2. Good ductility: the elongation rate of copper alloy is 20~40%, the elongation rate of copper for electrical engineering is more than 30%, and the elongation rate of aluminum alloy is only 18%.

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2022

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Silane cross-linked cables

Silane cross-linked cables

Silane crosslinking, also known as warm water crosslinking, in 1960 British Dow-Coning proposed to develop, also known as Sioplas method, that is, silane grafting crosslinking process, it is the grafting and extrusion divided into two processes, the first step by the insulating material factory silane crosslinking agent and base material on the extruder grafting and extrusion granulation

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2022

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Peroxide crosslinking

Peroxide crosslinking

The peroxide crosslinking method is a method of initiating crosslinking by adding a crosslinker. Its main advantage is that it is suitable for the production of cross-linked polyethylene insulated power cables of various voltage levels and various sections, especially medium and high voltage cables of 35kV and above.

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2022

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Irradiated cross-linked cables

Irradiated cross-linked cables

In 1960, Rachem developed irradiated cross-linked cables. This method does not require the addition of a cross-linker. In the early fifties, the United States had discovered the use of radioactive isotopes, reactor waste, the reactor irradiation itself, and the energy of electron accelerators to crosslink polyethylene

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2022

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