Time：2023.08.28Browse：1
The factors that affect the impregnation effect include: firstly, the impregnation process conditions (such as temperature and pressure), and secondly, the physicochemical properties of the impregnation.
Influence of process conditions
(1) Temperature (product preheating temperature, impregnation tank temperature, impregnation agent temperature), depending on the impregnation process: 1. The product is preheated too high and is prone to oxidation; The temperature is too low, and when it comes out of the preheating box, it quickly cools down and enters the impregnation tank. When the impregnating agent encounters cold products, its viscosity increases and its fluidity deteriorates, resulting in poor impregnation effect. 2. If the tank temperature is too high, asphalt is prone to oxidation condensation reaction, viscosity will also increase, and flowability will deteriorate; The tank temperature is too low, the fluidity of asphalt is also poor, and the impregnation effect is not ideal.
(2) Pressure (vacuum degree of the impregnation tank, pressure and time of pressurization)
The influence of the physicochemical properties of impregnating agents
(1) The higher the density of the impregnating agent, the higher the coke residue rate and the better the impregnation effect.
(2) It is better to have an appropriate viscosity. The smaller the viscosity of the impregnating agent, the better its fluidity, and it is easier to penetrate into smaller pores. However, if the viscosity is too small, the amount of coke formation will inevitably decrease.
(3) The higher the surface tension of the impregnating agent liquid, the better. The higher the surface tension, the smaller the wetting contact angle on the surface of the product, resulting in a higher capillary osmotic pressure and better wetting of the product, resulting in a better impregnation effect
2023-04-03In recent years, graphite molds have continued to impact model shell sales markets with their high -quality characteristics, and have become the new darling of the machinery processing industry. The manufacturers of Kobwee Grapeite products below told everyone that the shortcomings and preventive methods of the heat treatment process of graphite mold.
From the lead core of a pencil to the nozzle of a solid fuel rocket; Although the dark and unremarkable mass, this material composed solely of carbon atoms has quietly entered various fields of industrial production and become an indispensable part of people's lives, which is graphite. If you learned that it is still one of the core raw materials for lithium batteries and is at the forefront of the new energy electric vehicle industry today, would you feel that the investment prospects of a graphite processing enterprise are different?Graphite has good electrical conductivity and is often used to make negative electrodes for lithium batteries. Whether it is flake graphite concentrate that can be used as a solid lubricant, or spherical graphite that can more effectively encapsulate particles due to its rounded shape, it is one of the core raw materials for lithium-ion batteries. New energy vehicles are equipped with lithium batteries, so their application prospects are quite broad in d2023-08-08Graphite lithium battery negative electrode material
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