ZHENGSHAN TECHNOLOGY

Electrode paste is an important material used in industrial production to manufacture electrodes, and its fluidity has a direct impact on the quality and efficiency of electrode sintering. This article will delve into the importance of electrode paste fluidity and how to optimize the sintering process by adjusting relevant parameters.

1、 The concept of electrode paste fluidity

The fluidity of electrode paste refers to its ability to flow and deform under specific temperature and pressure conditions. This characteristic directly affects the filling effect and sintering quality of the electrode paste in the electrode shell. Usually, the flowability of electrode paste can be measured by methods such as flow cup method, cone penetration method, and rotational viscometer method.

2、 The influence of fluidity on electrode sintering

Filling effect: Electrode paste with good fluidity can be more easily evenly distributed in the electrode shell, reducing gaps and thus improving the density and strength of the sintered electrode.
Sintering speed: Electrode paste with good fluidity can transfer heat more effectively during heating, promoting the progress of sintering reaction. In contrast, electrode paste with poor fluidity may lead to insufficient sintering, affecting the conductivity and mechanical strength of the electrode.
Electrode quality: The fluidity of electrode paste has a significant impact on the quality of sintered electrodes. Good fluidity helps to form a uniform microstructure, reduce cracks and pores, thereby extending the service life of the electrode.

3、 Factors affecting liquidity

Temperature: Temperature is a key factor affecting the fluidity of electrode paste. Moderate high temperature can improve the fluidity of electrode paste, but excessively high temperature may cause excessive softening of electrode paste, affecting its formation.
Raw material ratio: The main components of electrode paste include asphalt, petroleum coke, and coal tar. Different ratios can affect the flowability of electrode paste, so finding the optimal ratio is crucial.
Additives: The use of additives such as surfactants and rheological modifiers can effectively improve the fluidity of electrode paste. These additives maintain good fluidity at lower temperatures by altering the molecular structure and interfacial tension of the electrode paste.

4、 Optimization measures

Reasonable temperature control: During production and use, the heating temperature should be reasonably controlled according to the characteristics of the electrode paste to ensure good fluidity without excessive softening.
Optimize raw material ratio: Determine the most suitable raw material ratio through experiments and simulations, which can meet the requirements of fluidity and ensure that the sintered electrode has good mechanical strength and conductivity.
Use additives: Add surfactants and rheological modifiers appropriately to improve the flowability and sintering performance of electrode paste. It should be noted that the use of additives should be moderate to avoid excessive addition that may affect electrode quality.