Dispersion Technology--The core for the application of carbon black pigment

         Carbon black pigment is a superior,the most widely used black pigment,but in the actual application process,encounter customers often reflect the products they buy and the quality did not meet expectations,causing all sorts of problems occur in production clients here in addition there is a problem on the initial carbon species selection,most likely black in the application process only concerned about the situation of carbon black blackness while ignoring the more crucial issue of carbon black dispersion.
         1,carbon black dispersion--dispersion of carbon black is very simple definition,refers to the operation by the carbon black agglomerates of broken grinding and dispersion device (dispersion) process to the desired particle size.
         2,the importance of carbon black dispersion--the degree of dispersion of carbon black pigment directly determines whether the performance is good or bad,has not been dispersed carbon black can not be used simply because it is simply not paint performance.Carbon black dispersion of different particle size of carbon black will make the same difference in the final product has a great use of effects produced.Because each application is not the same user,the user specific applications in the laboratory to determine the final dispersion process is very important.
         3,carbon black dispersion process--including the carbon black dispersion process three aspects:①wetting;②separation;③stable.
         Wetting--is replaced with the base surface of the carbon black aggregates or mid-air,the next step to facilitate the separation process,the difficulty of wetting depends on the surface tension of the binder and carbon black,and the wetting process is not done good will seriously affect the following separation process,so the process of using carbon black wetting step should be taken seriously enough.
         Separation--is the main dispersion process,by mechanical shearing force is applied to the device will mix the binder on the carbon black,the carbon black separated cut into fine particles.Select the device to determine the separation,the separation process conditions,the base material of choice have a huge impact on the shear force.
         Stable--carbon black has primary particles of very small and very large surface area,resulting after separation of a very large surface energy,and then there is a strong flocculation (rough back) orientation.The effect of the carbon black dispersing agent is adsorbed by the surface of the carbon black reduce the surface tension between the binder and carbon black,carbon black can promote good wetting of the material being connected,at the same time due to adsorption of the surface of carbon black dispersant charge and steric repulsion effect of the types of ions carried produced reaches a group "anti rough" phenomenon to prevent further agglomeration of the carbon black produced.

By Betty