When it comes to the Winter Olympics, perhaps many people's first reaction is "cold".
In previous Winter Olympic Games, there have been cases where a large number of spectators left the stadium early due to the cold on the spot, and media reporters and volunteers had difficulty working normally because their hands and feet were frozen. However, this will never happen again at the 2022 Beijing Winter Olympics. This is because the series of products made of graphene emit the temperature of science and technology for the Winter Olympics.
On February 20, the 2022 Beijing Winter Olympics was successfully concluded. As the opening and closing ceremony venue, the National Stadium Bird's Nest also applies graphene flexible thermal management material technology for seats, carpets and tables, innovatively solving the world problem of warmth guarantee for large outdoor venues in low temperature environments.
Recently, Chen Lijun, head of the special project of The Hangfa Graphene Materials Winter Olympics and chairman of Beijing Innovation Aishangjia Technology Co., Ltd., introduced that the mainland graphene heating clothing has made breakthroughs in key technologies such as low temperature start and operation, rapid electric conversion, etc., and the skills of soft, breathable and bending clothing have been further improved. Even in the coldest ultra-low temperature environment during the Winter Olympic Games, it can meet the thermal protection needs of athletes, staff, spectators and other on-site personnel.
"During the Winter Olympics, the night outdoor temperature in the Yanqing and Zhangjiakou areas of Beijing may reach -40 °C, and we have provided the Winter Olympic staff with graphene-heated scarves, vests, gloves and socks so that they can get systematic heat protection when working outdoors."
Chen Lijun said that graphene scarves, gloves, socks, etc. can quickly heat up to 38 °C -53 °C in a minus 20 °C environment, and continue to heat up for 2-4 hours, ensuring that the staff in the Winter Olympic Stadium will not feel cold even if they work outdoors for a long time.
Chen Lijun introduces the application of graphene in the 2022 Beijing Winter Olympics Photo of this article The Paper's reporter Zhou Wei photographed
Graphene heating products are widely used in the operation guarantee of the Winter Olympic Games
Talking about the association between graphene heating products and the Beijing Winter Olympics, Chen Lijun recalled: "In February 2020, we undertook a project of the Beijing Municipal Science and Technology Commission and the Zhongguancun Administrative Committee - the application of graphene intelligent heating products and thermal guarantees in low-temperature environment, which won the Top Ten Excellent Design Scheme Award at that time and became a representative project of the Science and Technology Winter Olympics Wisdom Beijing. ”
Chen Lijun said that after undertaking the task of ensuring the Winter Olympics, they determined four directions for the application of graphene: The first is to wear clothing to solve the temperature needs of personnel in low-temperature environments. The second is the licensed commodity ice pier hand warmer. The third is the application of venues. The fourth is to ensure that the professional equipment of the event works normally in a low temperature environment.
According to reports, in fact, as early as the 2008 Beijing Summer Olympics, graphene was applied in the "drawing paper" of the opening ceremony. In this Winter Olympics, graphene is even more brilliant in the field of smart wear.
Chen Lijun said that compared with other materials, graphene flexible heating materials have the characteristics of "safe, efficient and energy-saving, somatosensory comfort", the graphene textile flexible heating material "Aif AIF" used in the Winter Olympics, to achieve graphene flexible fiber fabric in the temperature range of 38 ° C -52 ° C precise heating control, can accurately transfer heat to the human body in a low-temperature open environment, can effectively improve the human body's physical comfort.
Graphene flexible heating material
In addition, in order to ensure that the media broadcast equipment of the Winter Olympics can work normally outdoors in the cold, they also wear graphene "coats". The cloud broadcast backpack using graphene flexible heating fabric material can instantly generate a temperature rise of 50 ° C, and is equipped with a low temperature battery to ensure that the cloud broadcast equipment can still operate normally and have an effective battery in the winter Olympic games at minus 20 ° C or even lower temperatures.
Graphene is an important entry point for smart wearable clothing applications
In response to a question from the surging news (www.thepaper.cn) reporter, Chen Lijun said that at present, there have been wearable terminal products with graphene as a raw material on the market, but graphene still faces many obstacles in the field of wearable applications, and it is necessary to change the upstream and downstream industrial chain of the entire garment manufacturing industry.
"Made of clothes with graphene, the original clothing has become electronic products, and its production, quality inspection, warehousing, and after-sales will change." In the past, it was not necessary to explain how to wear clothes to users, but now it is made into electronic products, and further explanation is needed. Chen Lijun said that the entire industrial chain must change due to the innovation of new materials, which is the biggest difficulty facing at this stage.
"For graphene, the Winter Olympics is a platform for application display, and through case applications, everyone can further understand graphene." Chen Lijun said that graphene new materials can bring new industrial applications, and future industrial applications will also pull materials to upgrade again, which is a cycle.
"Intelligent wear will occupy a large proportion of the wearable market, and even in the future, all clothing may be 'electric', there will be chips, sensors, like intelligent flexible armor." Chen Lijun said that graphene is a very important part of the huge smart wearable market when talking about future trends.
"Now everyone wears clothes, which more reflects people's personality traits, which is a symbol of status, and the earliest role of clothes is to hide shame and temperature compensation." The thermal management application of graphene will be an important entry point for smart wearable clothing applications. Chen Lijun said.
Wang Gang demonstrated the performance of graphene bulletproof steel plates
Graphene materials are widely used, and can be bulletproof and can also make masks
Wang Gang, secretary of the party committee and vice president of the Beijing Graphene Technology Research Institute, told the surging news (www.thepaper.cn) reporter that in addition to the wearable application of electricity and heat, graphene as a new material is also widely used in aerospace, military defense, new energy, environmental purification and many other important fields.
In the process of UHV transmission and transformation of the continental west-to-east power transmission, aluminum alloy wires with graphene addition have begun to be used, which can not only increase the strength, but also improve the conductivity and reduce the energy consumption loss of nearly 10% in the transmission and transformation process. Wang Gang said that according to the State Grid calculations, if the national "West-to-East Power Transmission" project all uses aluminum alloy wires with graphene added, it can save 275 trillion kWh of electricity a year.
Composite armor materials such as ceramic-based and aluminum-based with graphene components have significantly improved their antielasticity due to the "binding" effect of graphene. Wang Gang held up a bulletproof steel plate covered with bullet craters and said, "This is the bulletproof chest plate inserted in the chest of the deminers and detonators. The national standard requirement for it is to protect against one bullet, and the addition of graphene can protect against 4 bullets. In addition, in the field of on-board protective armor and bulletproof glass of armored vehicles, graphene has a good application. ”
In terms of new energy, Wang Gang said that the No. 7 battery made of graphene has 1200 mAh of electricity per section, and the performance in the low temperature environment of -30 ° C to -40 ° C is not attenuated, and other batteries may appear leakage, bulging and other situations, graphene batteries will never appear such a situation.
Since the outbreak of the new crown pneumonia epidemic in 2020, graphene technology has also been applied to epidemic prevention. Wang Gang said that protective masks with graphene materials have antibacterial and bacteriostatic properties, and they are better breathable and have low breathing resistance. At the same time, due to the hydrophobic nature of graphene, masks with graphene ingredients have greatly extended the use time, and their protective effect will not be weakened for 48 hours.
Graphene masks