The pipeline filter has a series of characteristics such as strong adsorption performance and hydration

The colloid has the same electric charge, has Brownian motion, the pipeline filter has a series of characteristics such as strong adsorption performance and hydration. The center of the colloidal structure is a rubber core composed of several water-insoluble dispersed phase material molecules. A layer of ions with the same charge is selectively adsorbed on its surface. These ions are produced by the dissociation of molecules on the surface of the rubber core or The H+ and OH- plasmas that originally existed in the water. This layer of ions is called the potential ion of the colloidal particles, which determines the amount and sign of the charge of the colloidal particles, and constitutes the inner layer of the electric double layer. Due to the electrostatic attraction of the potential ions, a large number of ions of different signs are attracted in the surrounding solution, forming a counter-ion layer, which constitutes the outer layer of the electric double layer. Among them, the counter ions close to the potential ions are firmly attracted by the potential ions. When the gel core moves, it also moves with it, which is called the counter ion adsorption layer, which forms the micelle adsorption layer together with the potential ions. The counter ions outside the adsorption layer of the pipe filter are weakly attracted by the potential ions, do not move with the gel core, and have a tendency to diffuse into the water, which is called the (counter ion) diffusion layer. The interface between the adsorption layer and the diffusion layer is called the sliding surface, and the part within the sliding surface is called colloidal particles, which are charged particles. The colloidal particles and the diffusion layer together form an electrically neutral micelle. The above-mentioned colloid and colloidal particle surface electric double layer structure, take Al(OH)3 sol as an example

“The total potential difference between the potential ions on the surface of the gel core and the body of the solution is called the jealous potential. When the colloidal particles move, most of the counter ions in the diffusion layer will break away from the micelles and diffuse into the main body of the solution. The amount of residual charge generated by the rubber particles of the pipeline filter is equal to the value of the charge of the counter ion leaving the micelle, and the sign is the same as the potential ion. It creates a potential difference between the colloidal particles and the diffusion layer. This potential is called the electrokinetic potential of the colloid, and is often referred to as the Bodhisattva potential. When the total potential is constant, the thicker the diffusion layer, the higher the g potential; conversely, the thinner the diffusion layer, the lower the taro potential. The higher the moss potential, the higher the stability of the colloid. The electrostatic repulsion caused by the potential of the pipe filter prevents the colloidal particles from approaching and colliding with each other, and performs Brownian motion under the random collision of water molecules, so that the colloidal particles are dispersed in the water stably for a long time. The stability of the colloid is the comprehensive performance of the above characteristics


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