How to ensure precise control of irradiation dose in the production of cross-linked irradiated PE line?
Publish Time: 2025-01-21
As an important product in modern wire and cable manufacturing, cross-linked irradiated PE line has been widely used in many fields such as electricity, factories and homes due to its excellent heat resistance, chemical resistance, radiation resistance and mechanical and physical properties. However, the realization of these excellent properties is inseparable from the precise control of irradiation dose.In the production process of cross-linked irradiated PE line, the control of irradiation dose is a key link. Irradiation cross-linking is to bombard polymer materials with high-energy electron beams generated by electron accelerators, so that the molecular chains inside the materials break and form free radicals. These free radicals then recombine to form cross-linking bonds, thereby transforming the material from a linear molecular structure to a three-dimensional network molecular structure. This transformation process directly determines the cross-linking effect and final performance of wires and cables.In order to ensure the best cross-linking effect and wire performance, the irradiation dose must be precisely controlled. If the irradiation dose is too large, the material will be over-crosslinked, the elongation of the wire and cable will decrease, the voltage resistance will decrease, and even embrittlement may occur; if the irradiation dose is too small, the crosslinking will be insufficient, and the expected heat resistance, corrosion resistance and other properties cannot be achieved.In actual production, the control of irradiation dose mainly depends on advanced irradiation equipment and strict process parameter settings. First, it is necessary to select an electron accelerator with stable performance and high precision as the irradiation source to ensure that the energy and dose rate of the electron beam are stable and reliable. Secondly, according to the characteristics of the PE material and the required degree of crosslinking, a large number of experiments are conducted to determine the appropriate irradiation dose range, and real-time monitoring and adjustment are performed during the production process. In addition, the precise control of the irradiation dose can be further achieved by optimizing the irradiation process parameters, such as adjusting the scanning speed and beam intensity of the electron beam.In addition to equipment and technical means, a strict quality control system is also an important guarantee for ensuring the precise control of the irradiation dose. During the production process, each batch of PE materials should be tested for performance before and after irradiation, including indicators such as thermal elongation, tensile strength, and elongation at break, to verify the suitability of the irradiation dose. At the same time, a complete radiation dose record and traceability system should be established to ensure that the radiation dose of each wire and cable is traceable and controllable.In summary, precise control of radiation dose in the production of cross-linked irradiated PE line is the key to achieving the best cross-linking effect and wire performance. By selecting advanced irradiation equipment, optimizing process parameters, and establishing a strict quality control system, precise control of radiation dose can be ensured, thereby producing cross-linked irradiated PE line products with excellent performance and reliable quality.
