Introduction of UVLED ultraviolet radiation crosslinking technology
UVLED ultraviolet radiation crosslinking is a new crosslinking technology developed after peroxide crosslinking, silane crosslinking and electron beam radiation crosslinking. The principle of UVLED ultraviolet light crosslinking technology is that polyolefin is the main raw material mixed with an appropriate amount of photocrosslinking agent, and UVLED ultraviolet light is irradiated under certain conditions. The photocrosslinking agent absorbs ultraviolet light of a specific wavelength to generate free radicals. The reaction cross-links the polyolefin molecular chains into a three-dimensional network structure.
Technology Introduction:
UVLED ultraviolet radiation crosslinking is a new crosslinking technology developed after peroxide crosslinking, silane crosslinking and electron beam radiation crosslinking. The principle of UVLED ultraviolet light crosslinking technology is that polyolefin is the main raw material mixed with an appropriate amount of photocrosslinking agent, and UVLED ultraviolet light is irradiated under certain conditions. The photocrosslinking agent absorbs ultraviolet light of a specific wavelength to generate free radicals. The reaction cross-links the polyolefin molecular chains into a three-dimensional network structure.
Technical advantages:
(1) The production cycle is short and the delivery time is shortened: the ultraviolet light cross-linking process can complete online cross-linking after ultraviolet light irradiation, and enter the next production process, without boiling or placing it for a certain period of time to complete the cross-linking. joint;
(2) Less investment in equipment and small footprint: the price of UV irradiation crosslinking equipment is only 1/10~1/5 of that of electron beam irradiation equipment. Installation only needs to add this equipment to the original basic production line, and no other equipment investment is required. UVLED ultraviolet radiation cross-linking equipment only occupies less than 2 meters in length on the basic production line, covers an area of less than 6 square meters, and 2 meters in height space;
(3) No pre-crosslinking: no need to clean the screw and machine head after shutdown, and the insulating surface is smooth and smooth after extrusion;
(4) Energy saving and environmental protection: energy consumption is lower than that of silane crosslinking and peroxide, and no pollutants are produced;
(5) Low production cost: the price of UV cross-linked cable materials is significantly lower than other cross-linked cable materials;
(6) Improve the electrical properties of wires and cables: the long-term working temperature of the UV-crosslinked cable is 105℃, and its thermal performance is increased by 16.7% compared with the long-term working temperature of 90℃ for the silane cross-linked cable. Under the same working temperature of the same type of cable, the service life of the UV cross-linked cable is longer than that of the silane cable; under the same transmission capacity, the UV cross-linked cable can reduce the actual cross-section of the core.
The following table shows the comparison of UVLED ultraviolet light crosslinking technology with silane warm water crosslinking and electron irradiation crosslinking (since peroxide crosslinking is generally suitable for the production of medium and high voltage wires and cables, no comparison is made here)
