| Name | Acetylene black |
| Synonyms | Acetylene black |
| Use | Application of acetylene carbon black is a lead-acid battery lead paste additive. It can separate lead sulfate crystals by forming a second phase and form pores in the electrode plate that are conducive to the ion migration of the electrolyte, so that the electrode plate absorbs more electrolyte to achieve The purpose of adjusting the distribution of surface active substances and improving the utilization rate of active substances; in addition, acetylene carbon black can also form a conductive network to promote the lead deposition process, thereby improving the capacity and charging acceptance of the battery. Acetylene carbon black is prepared by thermal decomposition of acetylene gas in high temperature environment. Acetylene carbon black has been well applied in the field of conductive materials due to its good conductivity and liquid absorption. |
introduction
acetylene carbon black is a kind of conductive carbon black, usually refers to the use of calcium carbide to make acetylene, and then the purified acetylene gas is isolated from the air at high temperature for thermal cracking, cooling and collecting high-performance carbon black, commonly known as acetylene black. Acetylene carbon black is mainly used for electrical conductivity, heat conduction, anti-static, coloring, reinforcement and other functions.
Preparation
A method for producing high-performance acetylene carbon black, which includes purifying acetylene carbon black by using an acetylene carbon black purification device, granulating the purified acetylene carbon black, and drying the granular acetylene carbon black.
Purification: After the thermal decomposition products of hydrocarbon compounds are separated and purified by the breaker, the first separation device is further separated and purified to obtain acetylene carbon black;
granulation: the purified acetylene carbon black and solvent are respectively added to the granulator for granulation. the mass ratio of the added acetylene carbon black to the solvent is 1:0.5~1:3.5. the solvent includes water, carboxymethyl cellulose aqueous solution, honey aqueous solution and lignin. in the embodiment of this application, the solvent is water, and the mass ratio of the added acetylene carbon black to the solvent is 1:2
drying: the prepared granular acetylene carbon black is sequentially dried for 20-60min for the first time, 20-60min for the second time and 20-60min for the third time. the temperature of the first drying is 120-180 ℃, the temperature of the second drying is 220-280 ℃, and the temperature of the third drying is 120-180 ℃. in the embodiment of this application, the first drying time is 30min, the drying temperature is 150 ℃, the second drying time is 30min, the drying temperature is 250 ℃, the third drying time is 30min, and the drying temperature is 150 ℃.