High-tech escort, the Winter Olympics "warm"

◎ Science and Technology Daily reporter Hualing

As the core area of the Chongli Winter Olympics in Zhangjiakou has just ushered in the first snowfall in 2022, the temperature on January 12 dropped sharply, with the lowest temperature reaching minus 21 °C. There are four competition venues here, namely the National Cross-Country SkiIng Center, the National Ski Jumping Center, the Genting Ski Park and the National Biathlon Center, which will produce 51 of the 109 gold medals of the Beijing 2022 Winter Olympics, all of which are snow sports. Then, in such a cold environment, how to give athletes, staff serving the Winter Olympics, and related instruments and equipment a warm guarantee, which brings new challenges to the winter olympics of science and technology.

Zhangjiakou National Ski Jumping Center. Photo by Xinhua News Agency reporter Yang Shiyao

It is understood that in the test activities of the snowboard and freestyle ski projects held at the Genting Ski Resort with a minimum temperature of minus 40 °C last year, the staff who assisted in the test were not disturbed by the cold, which was due to the fact that they wore graphene heated scarves, gloves, socks and other products independently developed by Beijing Innovation Aishangjia Technology Co., Ltd. (hereinafter referred to as Aijia Technology).

Not long ago, at the "Science and Technology to Help the Winter Olympics" science communication salon sponsored by the Beijing Association for Science and Technology, Wang Xudong, president of the Beijing Graphene Technology Research Institute, said that in the research and development of the "Science and Technology Winter Olympics" key special project "Low Temperature Environment Graphene Intelligent Heating Products and Thermal Guarantee Applications", Aijia Technology and Beijing Graphene Technology Research Institute jointly broke through the key technologies such as low-temperature start and operation of graphene flexible fabric heating materials, rapid electrothermal conversion, etc., to form graphene heating products and realize the low-temperature application of graphene flexible fabric heating technology.

"During the Winter Olympics, we first have to protect people. At the end of last year, the winter Olympics awards dress was released, inspired by Chinese culture such as 'Ruixue', 'Xiangyun', the famous painting "A Thousand Miles of Rivers and Mountains" and traditional Tang Dynasty textiles, which were very stunning. Many award ceremonies are outdoors in the cold winter, and the award ceremonial lady should wear the curvy beauty of oriental women and cannot appear bloated, which requires the whole set of materials to be made very light. In this regard, we have developed a set of special underwear containing graphene liner, which uses graphene to heat flexible fabric materials in many parts, and wear them to feel soft, close-fitting, breathable and warm, light and flexible and not afraid of the cold. Its temperature can be rapidly increased and remains above 32 ° C. Makes the whole human body very warm. This is to organically integrate traditional Chinese culture with modern black technology to create a traditional Chinese cultural science and technology artwork. Chen Lijun, the person in charge of the project to provide graphene intelligent technology heating products and guarantees for the Beijing Winter Olympics and the founder of Aijia Technology, said in an interview with the Science and Technology Daily reporter.

It is understood that on the basis of the independent research and development of graphene flexible fabric heating material AIHF (Aver), Aijia Technology has made the application of graphene flexible heating material safe, stable and effective operation through the transformation of the original graphene water-based dispersion liquid and the adjustment of the weaving process, combined with the customized electronic circuit intelligent control system, so that the graphene intelligent heating products that apply graphene flexible heating materials can operate safely, stably and effectively, and realize the application of thermal guarantee.

"The use of 'graphene three-dimensional composite water-based electric ink and its preparation method', etc., can make the product both soft, breathable, bending resistance and other properties, can achieve low temperature start at minus 40 °C, multiple areas of heat, 50 times of water washing can still maintain performance." Chen Lijun said that this "intelligent temperature-controlled graphene fabric" is made into clothing for the Winter Olympic staff, and they can operate in multiple modes through button manual, App software control and intelligent voice, and adjust the temperature between 38 °C and 52 °C to achieve accurate temperature regulation, accurate to 1 °C.

In addition, in order to solve the problem that the broadcast equipment cannot work properly in the extremely low temperature environment of the Winter Olympic venues and competition sites. Aijia Technology, Beijing Graphene Technology Research Institute and Beijing International Cloud Broadcasting Technology Co., Ltd. work together to jointly develop a graphene low-temperature guarantee program, using graphene flexible fabric electric heating material Effer, composite national advanced functional fiber center developed insulation material graphene modified aerogel, and with graphene low-temperature battery, so that the cloud broadcast backpack, can instantly produce 50 °C temperature rise, in order to ensure that in the Winter Olympic environment minus 40 °C environment, cloud broadcast equipment does not affect portability, It can be used normally on the basis of lightweighting. In order to prevent the outdoor staff's mobile phones, walkie-talkies, cameras, cameras and many other work equipment from working properly in the outdoor arena of the Winter Olympics, they can also wear graphene "coats".

In addition, Aijia Technology has also established a graphene special fiber laboratory with the Beijing Graphene Research Institute, jointly carried out the research and development and testing of graphene special fibers, and developed products such as heated seats in outdoor open-air competition venues and graphene heating hand warmers such as the mascot ice pier of the 2022 Beijing Winter Olympics to better meet the warm needs of personnel and on-site professional equipment in low-temperature environments.

Source: Science and Technology Daily

Editor: Wang Yu

Review: Julie

Final Judge: Liu Haiying