Epidemic Situation, They Solve The Environmental Pressure Brought About By The Waste Mask.

In 2020, when the epidemic came suddenly, masks became an essential tool for people to protect themselves, and the consumption of respirators increased worldwide. However, mask waste has also become a major hidden danger. The existing mask materials are basically non Degradable Polypropylene, which will cause serious pollution to the environment.

Recently, the advanced elastomer materials research center of Beijing University of Chemical Technology and the Beijing Laboratory of biomedical materials have joined hands with Tongcheng New Material Group Co., Ltd., Beijing tongni Group Co., Ltd. and Beijing joint health medical protective products Co., Ltd., and the design of biodegradable barrier materials from Beijing Technology and Business University, Beijing University of Chemical Technology School of electrical engineering and Zhongyuan University of Technology. With the synthesis and barrier layer microfiber spinning, the selection and optimization of the inner and outer layer materials of the biodegradable respirator, and the manufacture and performance evaluation of the whole biodegradable mask, a fast whole chain tackling problem has been made, and a new generation of civil cover with completely biodegradable material has been manufactured. The performance of the biodegradable respirator (such as filtration efficiency and ventilation resistance) exceeds that of the medical external mask. The core indicators of the Department mask. ?

The research and development of the mask has broken through several important key technologies. First of all, biodegradable barrier materials and fiber manufacturing technology were conquered. The biodegradable poly (adipic acid / terephthalate butadiene) (PBAT) melt blown material with a melt index up to 1200 g/10min was designed and synthesized for the first time. The successful preparation of barrier layer nanofibers or micron fibers was achieved through breaking barrier layer preparation technology. In manufacturing technology, the inner and outer materials of mask were optimized, and the natural cotton knitted fabric was used in the inside and outside of the mask. The material of the ear belt is biodegradable polyester elastomer material developed by Beijing University of Chemical Technology. ?

At the same time, the research team evaluated the degradation performance of the whole biodegradable mask, which is stable in storage and does not degrade or decline in normal environment. Based on a large number of research data, the mask barrier material will only be degraded in compost soil, which will completely decompose in a few months, decomposing by microorganisms, releasing water and carbon dioxide.

At present, Beijing University of Chemical Technology will further improve the scale production technology of barrier materials and ear materials by joint related enterprises, and complete the trial production and testing of all types of mask products (including civil and civil protective type), and strive to achieve large-scale production and application of full degradable respirators in the near future, relieve the pressure of respirators and solve the problem of non degradable respirators. Environmental pollution problems.