Why does PE pipe need to add carbon black?
Adding carbon black to PE pipes can effectively resist UV erosion, protect the pipes, and prevent aging of the pipes, which is very beneficial. However, it is important to note the dispersion of carbon black during the addition process. If the dispersion is not uniform, it may affect the performance of the pipe, causing slow or fast cracking. In this case, it is recommended to add a carbon black dispersing agent during the addition of carbon black to promote dispersion. Of course, there are also requirements for the particle size of carbon black in PE pipes. Specific recommendations can be obtained by contacting the manufacturer of the carbon black used in PE pipes.
The effect of carbon black content on the quality of PE pipes
Because many PE pipes are used outdoors, there are requirements for the raw materials used to produce them, which need to have good weather resistance. The carbon black content in PE pipes has a certain impact on the weather resistance of the pipes. Generally, PE pipe materials with a carbon black content of about 2.5% have good weather resistance. If the carbon black content is lower than 2.5%, it will only play a role in coloring the pipe and cannot provide good weather resistance. Such PE pipes should be avoided being exposed to sunlight.
The role of adding carbon black to PE pipes
The main role of carbon black in PE pipes is to resist UV erosion, protect the pipes, slow down aging of the pipes, and prevent pipe fracture and degradation. In addition, carbon black also has a coloring effect in PE pipes.
Methods for measuring carbon black content in PE pipes
There are usually specialized PE pipe carbon black content testing machines for testing the total carbon black content in PE pipes, which can fully detect the carbon black content in the pipes. The testing program for the carbon black content in PE pipes is determined according to GB/T13021. The dispersion of pigments and carbon black is determined according to GB/T18251, and the method of pressing samples is adopted.
Why test carbon black content in PE pipes?
Many people do not understand why the carbon black content in PE pipes needs to be tested. This is mainly because the carbon black content has a great impact on the application of PE pipes. PE pipes with low carbon black content should avoid exposure to sunlight, and high carbon black content is also not good. Therefore, it is necessary to test the carbon black content in PE pipes to determine the application environment in which the pipes can be used.