The 16-day Beijing Winter Olympics came to a close, and the Chinese delegation achieved good results of 9 gold, 4 silver and 2 bronze in this Winter Olympics. While happy for the smooth hosting of the Winter Olympics in our motherland, as chemical workers, we certainly need to pay attention to the new chemical materials that made their debut in the Winter Olympics.
it is a kind of thermoplastic material with high molecular weight compounds., with excellent optical properties, impact resistance, thermal insulation, light weight, flame retardant, sound insulation, creep resistance, fatigue resistance, dimensional stability and electrical properties. Polycarbonate (PC) is widely used in automotive and aviation transparent materials, electronic appliances, medical devices, optical disks and other fields.
Source: Network
in the process of skiing, snow has a very high reflection rate of ultraviolet rays emitted by the sun. If you look at snow for a long time without protection, you will suffer from snow blindness if you are careless. And in the process of skiing, it is inevitable that something like snowboard flying snow and small stone will hit head on. Therefore, a ski goggles that can protect eyes is particularly important.
PC (polycarbonate) plastic material is widely used in lens manufacturing of goggles due to its unique characteristics of high light transmittance, high refractive index, high impact resistance, dimensional stability and easy processing and molding.
ABS (acrylic nitrile-butadiene-styrene copolymer) it is a commonly used thermoplastic engineering plastic, it is a terpolymer of acrylonitrile, butadiene and styrene, and the relative content of the three monomer can be arbitrarily changed to make various resin. ABS has good comprehensive performance, low price and wide application, and is widely used in electronic appliances, instruments, automobile manufacturing, office machinery, daily products and other fields.
Source: special plastic market
skiing is a very enjoyable skiing sport, which organically combines speed and skills. Athletes should complete rapid sliding and turning movements on the steep slope of the towering snow mountain.
When athletes ski, their heads will emit a lot of heat and they need to wear breathable and warm helmets. Ski helmet shell materials are mainly PC (polycarbonate) and ABS (one kind of engineering plastics), inner shell is generally a high-density foaming material, which can play the best buffering role after the head is hit.
polyurethane refers to the polymer resin synthesized by polycondensation of basic chemical isocyanate and polyol, which has become an indispensable and important material in life.
Source: Network
as an official project in the Winter Olympics, short track speed skating has always attracted much attention. As a competition, the speed skating competition clothing reflects the "technology content" everywhere ". In order to reduce air resistance, honeycomb-style polyurethane materials are used in the hands and feet of speed skating competition clothes in order to maximize the performance of athletes.
By changing the chemical structure and formula ratio of raw materials, polyurethane can produce products with various properties, which is the only one among all kinds of polymer materials at present in plastics (foam plastics), rubber (Elastomer), synthetic materials with great application value in fiber (spandex), coating and adhesive. Compared with rubber, polyurethane has better wear resistance and cutting tear resistance. Compared with metal and plastic, polyurethane has outstanding sound insulation and wear resistance.
carbon fiber is a high-strength and high-modulus high-performance fiber material with a carbon content of more than 90%. As a strategic new material with excellent performance, the fiber density is less than 1/4 of that of steel, but the strength is 7-9 times that of steel. Now it is widely used in aerospace, new energy, transportation, sports and leisure and other fields.
At this Winter Olympics, carbon fiber materials can be said to be brilliant, and torch, snowmobile, speed skating skates and other equipment have its figure.
Source: CCTV set of public numbers
the materials of the Winter Olympic torch "flying" creatively adopted "carbon fiber", it is not only fire-resistant and high temperature resistant, but also can resist 10 levels of wind and rainstorm, and can be used in extremely cold weather. The Winter Olympic organizing committee commented on the torch as light, not bad, and avoided the embarrassing situation of "freezing hands" of metal materials in winter.
According to the introduction of torch design technicians, making the Olympic torch with carbon fiber composite materials is the first in the world. In the production workshop, each of these black tow made of petroleum products contains 12000 carbon fiber filaments. Next, using the three-dimensional weaving machine, you can weave a thread into a torch coat like knit a sweater.
Source: China Aerospace Research Institute
on September 10, 2021, the delivery ceremony of Chinese snowmobile equipment was held in Beijing Capital Gymnasium, marking that the domestic snowmobile developed by the Institute of Aerospace materials and technology of the rocket Academy was officially delivered to the State Sports General Administration!
It is reported that the snow car weighs about 180kg and is made of carbon fiber composite material and alloy material. It is produced by hot melt preprepreg/hot pot molding method. Among them, the domestic TG800 aerospace grade carbon fiber composite material used to manufacture the car body looks like wallpaper, but it is a sandwich structure. The black carbon fiber composite preprepreg sandwiched in the middle has viscosity on both sides, which is light, thin, soft and has good ductility and is in the form of fine weaving. In addition, the diameter of each carbon fiber monofilament is only about one tenth of the diameter of human hair. With the formal delivery of the snowmobile, it can be said that the breakthrough of domestic snowmobile equipment from "none" to "yes" has been realized, filling the domestic gap.
Source: Network
through the establishment of the database of speed skating athlete's foot type and sole, the 3D foot scanning and printing system is developed, and the carbon fiber high-performance composite material is adopted, which can carry out personalized customization and rapid manufacturing of speed skating skates, effectively improving the performance of speed skating skates, and realize lightweight manufacturing, which is helpful to improve the competitive performance of athletes.
graphene is a new type of nano-material with the highest thermal conductivity known at present. It has ultra-high strength and ultra-high thermal conductivity, and is praised as "The King of New Materials" by the industry ". Graphene heating clothing has soft, breathable and bending resistance, which can be started in an ultra-low temperature environment of minus 40 ℃, and the temperature is adjusted between 38 ℃ and 52 ℃, the washing performance of 50 times does not decay, and heat occurs in multiple areas, which can well meet people's use requirements in ultra-low temperature environment.
Source: Guangming newspaper
in order to cope with the low temperature environment of the outdoor stadium of the Winter Olympics, do a good job of cold protection and thermal protection for the staff and equipment, and the thermal products developed by using graphene heating technology came into being. Heating scarves, gloves, socks and so on can realize the temperature adjustment of 38 ℃-52 ℃ for the staff to meet the warm-keeping needs of personnel in low temperature environment.
In addition to providing warmth for the staff, professional equipment such as Interphone, cloud relay package, mobile phone and camera also need to keep warm during the Winter Olympics. According to the introduction, the equipment equipped with graphene to keep warm can guarantee its normal startup at minus 20°C.
ETFE (ETFE (ethylene-Tetra-fluoro-ethylene)) film is a new lightweight material with good thermal properties and light transmittance. The middle of the two films is called "cavity".
ETFE membrane structure of National Swimming Center
in summer, it becomes a "Water Cube" to undertake swimming sports events, requiring high temperature and humidity; In winter, it is converted into an "ice cube" to undertake cold water jug competitions, and it is necessary to have a low temperature of low humidity. The secret of meeting the new venue operation mode of "all-weather two-wheel drive" lies in the membrane structure. Liu Jun, project manager of "ice cube" of China Construction Construction Bureau, introduced that "ice cube" is the world's largest membrane structure project, and the venue consists of 3216 different membrane structure "bubbles, each" bubble "consists of two ETFE films (ETFE (ethylene-Tetra-fluoro-ethylene)) inside and outside.
Open the "cavity" at the top in summer to cool the venues through natural ventilation; Close the "cavity" in winter to fully absorb the heat of sunlight, reduce energy consumption to the greatest extent, and help the venues to achieve winter insulation, heat dissipation in summer can save more than 30% of electricity.
rPET is a kind of environmental protection material made of PET plastic bottle as raw material, which is mostly used in clothing, textile, automobile, consumer goods and other fields.
Source: Coca Cola
"Sustainability" has become one of the key words of the 2022 Beijing Winter Olympics. At this year's Winter Olympics and Paralympic Games, Coca-Cola China provided a set of overalls suit made of rPET (beverage bottle recycled material) for the waste cleaning team in all venues, this is another innovative practice of Coca-Cola Company in the field of sustainable packaging, aiming to better enhance public awareness of the concept of recycling. As shown in the small slogan "I am made of 28 beverage bottle" on the coat, the whole set of work clothes is made of 28 beverage bottle recycled and reused, which has good waterproof and antifouling effects. The coat design of the Winter Olympic stadium cleaning team draws on the detachable function of outdoor shell jacket, and is matched with detachable cold-proof coat and trousers to meet the operation requirements under great temperature difference. The design and final presentation of the whole set of work clothes integrate the elements of "return" into them, which greatly reflects the concept of recycling and recycling.
Source: China Aerospace Research Institute, special plastic market, carbon fiber production technology, intelligent new materials, new materials research institute, etc.* Disclaimer: the content contained is from public channels such as the Internet and WeChat public accounts. We maintain a neutral attitude towards the views in this article. This article is for reference and communication only. The copyright of the reprinted manuscript belongs to the original author and organization. If there is any infringement, please contact Huanyi world customer service to delete it.
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