Carbopol: a key role in the preparation of ultra-thin coated membranes

In the field of materials science, various new materials continue to emerge, bringing innovation to the development of different industries. Carbopol, as an important and uniquely functional material, has shown significant value in the preparation of ultra-thin coated membranes and has gradually attracted the attention of researchers and related industries.

1, Basic characteristics and functions of Carbopol

Carbopol is a substance with important rheological properties. It contains a large number of carboxyl groups, which ionize when dissolved in water and disperse small particles through bonding. In specific solution environments, such as pH 7 carbomer solution, it can encapsulate and modify hydroxylated alumina. This packaging modification process is of great significance as it can alter the surface properties of hydroxylated alumina, laying the foundation for its subsequent application in material preparation. Moreover, Carbopol itself is an efficient rheological regulator that can effectively regulate the fluidity and viscosity of solutions, meeting the needs of different preparation processes.

2, The key role in the preparation of ultra-thin coated membranes

Carbopol plays an indispensable role in an ultra-thin coated membrane and its preparation method. When preparing ultra-thin coated membranes with high heat resistance, thermal dimensional stability, and high wettability, a slurry made of ultrafine alumina particles and multi walled carbon nanotubes is used to coat the base film. The step of coating modification of hydroxylated alumina with carbomer is crucial. After carbomer coating modification, the surface of alumina is effectively improved in the dispersion uniformity of small particles of alumina in the separator due to electrostatic repulsion without adding dispersants and reducing the amount of binder.

The improvement of dispersion uniformity has brought multiple positive impacts. On the one hand, it synergistically improves the cross-linking complexity of various components within the membrane, thereby enhancing the mechanical strength of the membrane and its ability to infiltrate the electrolyte. The increase in mechanical strength enables the diaphragm to better withstand certain pressures and deformations in applications such as batteries, ensuring its structural stability; Good electrolyte wettability helps with ion transport and improves battery performance. On the other hand, by electrospinning and in-situ growth, porous membranes prepared using polybenzimidazole and polyetherimide can be used as base membranes, and the material modified with carbomer can be better combined with them to jointly construct ultra-thin coated membranes with excellent performance.

3, Comprehensive improvement effect on diaphragm performance

This ultra-thin coated membrane prepared with the participation of Carbopol has various excellent properties. Its thermal shrinkage resistance has been enhanced, and it can maintain good dimensional stability in high temperature environments, which is of great significance for some application scenarios that are sensitive to temperature changes, such as high-temperature batteries. At the same time, the high liquid retention and low internal resistance performance of the diaphragm are also outstanding. The high liquid retention performance ensures the stable storage of electrolyte in the diaphragm, providing a guarantee for the continuous transport of ions; Low internal resistance reduces energy loss during ion transport, improving the energy efficiency and performance of the battery. The comprehensive improvement of these properties makes the ultra-thin coated membrane more competitive and has a wider range of application prospects in related fields.

Hubei Xindesheng Material Technology Co., Ltd. focuses on the research and production of carbomer and related materials, providing a series of standardized high-quality carbomer resin products. If you have any recent purchasing needs, please click on the official website for more details or contact me. Looking forward to your consultation!