Some Problems to Be Noted When Installing Fire-resistant Cables

The fire-resistant cable can still maintain the normal working of the line for a period of time under the burning conditions. In other words, in the event of a fire, the fire-resistant cable will not burn at once, and it can still maintain normal power supply for a period of time. This characteristic determines that the fire-resistant cable plays an important role in modern cities and industrial buildings, because once the fire occurs, the power supply circuits of the system such as control, monitoring, guidance, and alarm must maintain normal operation.
The main use of fire-resistant cables:
Fire-resistant cables are mainly used in power supply circuits such as emergency power supply to user fire-fighting equipment, fire alarm equipment, ventilation and smoke exhaust equipment, guided lights, emergency power sockets, and emergency elevators.
Staff should pay attention to the following issues when installing fire-resistant cables:
1. When fire-resisting cables are used in cable-intensive cable tunnels, cable mezzanines, or in flammable places such as near oil pipes and oil depots, Class A fire-resistant cables should be used first. When these conditions are removed and the number of cable configurations is small, Class B fire-resistant cables should be used.
2. Fire-resistant cables are mostly used as power supply circuits for emergency power supplies and require normal operation in fire. As the ambient temperature rises rapidly during a fire, in order to ensure the transmission capacity of the line and reduce the pressure drop, for a circuit with a long power supply line and strictly limiting the allowable voltage drop, the section of the fire-resistant cable should be enlarged at least one step.
3, fire-resistant cables can not be used as high-temperature cables.
4. In order to reduce the probability of failure of cable joints in a fire accident, the number of joints should be minimized during installation to ensure that the line can work normally in a fire. If you need to make branch wiring, handle the joints to prevent fire.

Diallyldimethylaminium Chloride

Diallyldimethylaminium chloride (DADMAC) is a quaternary ammonium salt with the chemical formula (C3H5)2N(CH3)2Cl. It is a colorless to pale yellow liquid that is soluble in water and polar solvents.

DADMAC is commonly used as a coagulant and flocculant in water and wastewater treatment, as well as in the paper, textile, and cosmetic industries. It has cationic properties that make it effective in binding with negatively charged particles and colloids, allowing them to be easily removed from water.

DADMAC is also used as a monomer in the production of polydiallyldimethylammonium chloride (PDADMAC), a water-soluble polymer that is used as a flocculant, binder, and conditioning agent in various industries.

While DADMAC is generally considered safe for use in industrial and consumer products, it can be irritating to the skin, eyes, and respiratory system if not handled properly. It is important to follow proper safety precautions when working with DADMAC, including wearing appropriate protective equipment and avoiding direct contact with the skin and eyes.

Dially Dimethy Ammonium Chloride DADMAC 60%, Dially Dimethyl Ammonium Chloride, Diallyldimethylaminium Chloride DADMAC 66%

Sichuan Jinhe Qihang Co,. Ltd. , https://www.jinhechemicals.com