Health Canada: Graphene Masks Recalled? The Announcement Said There Was A "Health Risk Wind"

Recently, the health department of Canada issued a notice that "masks containing graphene may cause health risks". As soon as the announcement was released, it immediately attracted international attention and was followed up by many media. Among them, several words are particularly striking: "graphene", "dangerous health wind".

Health Canada advised Canadians not to use masks containing graphene because of the risk of inhaling graphene particles, which poses a health risk, the notice said.

Graphene is known as the most subversive new material in the 21st century. It is a new type of nano material with high strength, wear resistance, antistatic, thermal conductivity, antibacterial and antibacterial, negative oxygen ion, low temperature far-infrared, anti mite and other characteristics.

The health risks pointed out in this announcement are mainly that graphene particles in the filter layer of the mask may fall off and be inhaled into the lungs, thus causing harm.

Graphene nanomaterials themselves are not volatile, but with the continuous expansion of the scale of use, waste containing graphene nanomaterials will be produced in the production, use and treatment of waste materials, which will be transferred and accumulated in the air, water and soil, which has potential threat to organisms and human beings, which is commonly known as the biological safety of graphene.

For the biosafety of graphene, experts at home and abroad have been studying and cracking since the birth of graphene. Jiang Yan, chairman of Changzhou henglibao nano New Material Technology Co., Ltd., is one of them“ In situ polymerized graphene grafted products can solve the problem of biosafety Jiang Yan explained the health risks mentioned in the announcement issued by the Health Ministry of Canada.

The principle of in-situ polymerization is that natural flake graphite is made into graphene oxide by oxidation, intercalation, stripping and other processes, and then the functionalized graphene containing specific functional groups is prepared. The specific functional groups on the functionalized graphene are chemically bonded with the molecular chains of polymer materials, The functional modified graphene can be fully dispersed and grafted in situ in the polymerization process, so that the possibility of loss can not occur again in the subsequent use and washing, and fundamentally solve the loss problem of graphene in use. The health risk mentioned in the announcement of Health Department of Canada just shows that if graphene, a new material, fails to solve the "grafting problem" when the material body is compounded with other materials, the hidden danger caused by merely relying on the "powder addition" process is obvious.

The graphene in-situ polymerized nylon-6 material developed by henglibao is a national and international patent invention technology. The core of the technology is to realize the chemical bond combination of functional graphene and polymer chain of basic material. The technology greatly changes the performance of nylon matrix. Through professional test, its wear resistance times are more than 200000 times, But ordinary nylon fabric only about 60000 times. In addition, the antibacterial rate of the product to Staphylococcus aureus, Escherichia coli, Candida albicans can basically achieve 99%, the inhibition rate of Klebsiella pneumoniae can reach 91%, and no dissolution. At the same time, it also has a strong anti mite effect, the inhibition rate of mites can reach 90% (the standard is ≥ 60%). The anion generation capacity of the fiber can reach 616 / cm3.

With excellent data, Hengli in-situ polymerization technology of GEM has passed the scientific and technological achievements appraisal organized by China Textile Industry Federation, and has obtained international advanced technology evaluation. It has applied for 18 invention patents, of which 11 have been authorized. In August 2017, Konstantin Novoselov, the graphene discoverer and Nobel Prize winner, visited henglibao technology and highly praised the in-situ polymerization of graphene nylon 6 fiber products; After visiting henglibao science and technology production base in August 2019, Gan Yong and Jiang Shicheng, academicians of the Chinese Academy of engineering, commented that the project was a disruptive breakthrough.

In addition, graphene in-situ polymerization of polyamide 6 fiber also breaks the consumer's color cognitive limitation of "black" and "gray" of graphene fiber, forming a unique dyeing system. With excellent performance, Hengli Bao's graphene in-situ polymerized nylon 6 has won the Chinese patent Excellence Award successively, and has been selected into the fiber fashion trend of China in 2017 / 18, 2018 / 19 and 2020 / 21, and awarded the new product R & D and promotion innovation enterprise award of 2019 by China chemical fiber Industry Association. In 2020, it was awarded the "13th five year plan technological innovation demonstration enterprise", and was listed by the Ministry of industry and information technology as the "pilot unit of intellectual property application of industrial enterprises" in the textile industry in 2020. At present, henglibao has reached cooperation with several leading enterprises in downstream industries, such as Jinjiang science and technology. The long fiber, staple fiber and yarn spun by graphene nylon 6 have been used in antistatic, antibacterial, antibacterial, far-infrared, and other fields Anion and other functional fabrics are widely used in outdoor sports, fitness, maternity clothing, home textiles and other industrial fields.