NBBY Advanced PI Technology Corporation focuses on the R&D and production of polymer material polyimide (PI for short).
Its core technology lies in the design and synthesis of special monomers and the optimization of polymerization formula and process through theoretical calculation. Based on the underlying technology, a series of high-performance polyimide materials and related processes are obtained.
The company's products include CPI film, transparent polyimide (CPI) paste and flat wire winding paste for EV motor in the display field. The polyimide slurry in the company's EV field has passed the verification of the supply chain of several EV OEM automobile enterprises.
PI is a kind of polymer material with good comprehensive performance, which has excellent high temperature stability, chemical stability, mechanical strength and electrical insulation performance, and is widely used in aviation, aerospace, electronics, medical and other fields.
Polyimide has a very high glass transition temperature (Tg), which can be used for a long time without failure under high temperature environment. At the same time, it also has excellent chemical resistance, which can withstand the corrosion of most organic solvents, strong acids and other corrosive media.
Polyimide materials also have good electrical insulation performance, so they are widely used in the electronic and electrical industry.
According to different application categories, PI can be divided into electrical level, electronic level, thermal control level, etc. At present, the electrical insulation tape and thermal control film used in the traditional field of electric motors and rail transit are all PI films. Multiple manufacturers in China have achieved large-scale production of electrical grade PI films, but electronic grade PI films still rely heavily on foreign countries.
PI material is divided into film, fiber, foam, slurry and other forms, but no matter what form, it is prepared from PI slurry.
At present, film is the largest market. There are more than 140 enterprises in China producing polyimide films. However, most of the products are electrical insulation films with low technical barriers, and few enterprises are involved in high-end films. This is because the core technology lies in the synthesis and formulation process of the slurry. At present, the pulp and its technology are controlled by foreign companies, and the localization rate of the pulp is basically 0.
At present, there are solutions in the field of flexible displays, such as double-layer CPI film composite solutions and UTG ultra-thin glass composite other material solutions.
The dual layer CPI film scheme has been adopted by some domestic manufacturers, which has the advantages of good ductility and less fragmentation. However, this scheme also has pain points such as lack of high-strength glass support and poor flatness;
The most commonly used solution for UTG ultra-thin glass composite materials is the UTG ultra-thin glass+OCA optical adhesive+PET solution, which has the advantages of high hardness, good flatness, and better experience. However, PET is easy to crystallize and will form obvious creases after bending;
Meanwhile, due to the fact that UTG and PET materials are bonded through OCA optical adhesive, it is easy for the entire piece to peel off.
UTG ultra-thin glass coating CPI slurry solution
The research and development of display grade polyimide is very difficult. NBBY proposed a plan to coat UTG ultra-thin glass with CPI slurry, which can protect UTG ultra-thin glass while ensuring the texture of consumers. Currently, effective adhesion between UTG glass and CPI slurry can be achieved.
The transparent polyimide performance of the company in the display field has exceeded that of the Korean benchmarking company, has passed the verification of display customers, and is being shipped in batches.
The flat wire winding PI slurry paint used in EV has high requirements for insulation performance. Currently, NBBY's products have been recognized by the terminal and have received downstream orders, which are in the stage of bulk supply.
Polyimide enamelled rectangular wire
With the rapid development of new energy, the requirements for insulation and flame retardancy are increasing, and new demands for polyimide in the field of new energy are constantly emerging. The company can rapidly iterate and develop new products based on its core advantages.
The core technology of NBBY first lies in mastering the preparation process of PI slurry, and secondly, the company's mastery of film forming process.
The PI material is in a state of multiple entangled chains after forming a thin film. The state of multi chain assembly is crucial, and how to enhance the material performance after film formation mainly depends on theoretical research. And the theoretical research ability is exactly what the NBBY team excels at.
NBBY can deeply understand the changes in the aggregation state of polymers during synthesis and film formation processes. Starting from the regulation of polymer microstructure, it focuses on the relationship between the microstructure and final performance of films, thereby optimizing the design, synthesis, and formulation process of polymer materials.