In the 5G New Material Industrial Park of SDJT Advanced Material Technology Group, the electromagnetic shielding film automatic production line developed by the company is operating in full power and order, forming a production scale of 3 million square meters per year.
SDJT is committed to the in-depth research, development and production of high-end electromagnetic shielding films, nano thermal conductive films and other materials.
The conductive fabric, conductive fiber, 5G special electromagnetic shielding film with high shielding efficiency developed by the company are all in the leading position in China, especially 5G special electromagnetic shielding film with high shielding efficiency, which is at the same level as foreign technologies.
5G special electromagnetic shielding film with high shielding effectiveness is composed of 8 layers of films, and the thickness of the finished product is less than 10 microns, among which the shielding layer technology is the core.
Walking in the visiting corridor of SDJT's ten thousand level purification workshop, the company's CTO Dr. Zen told us that during the entire R&D process, the company's R&D team mainly solved two key technical difficulties:
First, To solve 5 μ Deformation of m film under force was independently developed through the improvement of magnetron sputtering technology.
Through the micro tension magnetron sputtering technology, after hundreds of tests, through the film high temperature pre shrinking technology μ The temperature resistance of m polyester film is increased by 30 ℃, which increases the tensile strength of the film. With the help of the micro tension system, the flatness of the polar film products is ensured. "
The second key technology is ion implantation technology
In order to make the ion implantation energy controllable, SDJT has developed an energy regulator, which makes the ion source energy precise and controllable from 1000 to 20000 electron volts, realizing the film thickness precise and controllable from 5-100 microns, thus preparing a higher density metal layer and achieving 5G higher shielding efficiency.
”In order to overcome the problem of ion beam agglomeration, the company has successfully developed an ion beam scanning device in cooperation with many Chinese experts in the nuclear field, so that the ion beam can be uniformly dispersed, thus improving the uniformity of the membrane shielding layer, and laying a solid foundation for the application of ion implantation technology to high-end shielding material industry. "
In combination with various ion implantation technologies, SDJT has developed and produced the first ion implantation coating machine in China, which is also the only one that can be used in 5 μm Complete set of equipment for film roll to roll production.
"The Japanese TATSUTA c3300 is the most high-end 5G special electronic shielding film at present, which has passed the core index test.
The key indicators of 5G special electromagnetic shielding film with high shielding effectiveness developed by SDJT are equivalent to those of SDJT. It can be completely imported and replaced, breaking the Japanese monopoly, and solving the problem of 5G shielding material 'choking'.
The company's high-performance 5G shielding film has been tested and certified, and its products have entered the supply chain of Huawei and ZTE.
At present, the first phase has completed the construction of two automatic electromagnetic shielding film production lines, forming a production scale of 1.5 million square meters annually, and has successively passed ISO9001 QC080000, OHSAS18001, UL, ISO14001 and other international standard system certification.
At the beginning of 2022, the company has started to build 4 new production lines.