Let's look at the new materials inside and outside the Winter Olympics
1. The torch of the Winter Olympic Games is made of carbon fiber
The Beijing Winter Olympic torch made its debut at the first anniversary of the countdown to the opening ceremony of the Beijing Winter Olympic Games!
The overall appearance of the torch echoes the shape of the main torch tower at the opening ceremony of the Beijing 2008 Olympic Games. The torch is "bottomed out" with auspicious cloud patterns, and gradually transits from auspicious cloud patterns to paper-cut style snowflakes from bottom to top. It rotates and rises like ribbons, reflecting the perfect integration of artistic design and scientific and technological innovation.
The torch is usually made of traditional metal materials, including the summer Olympic torch, but the shell of the 2022 Winter Olympic torch is made of light-weight high-temperature resistant carbon fiber materials and composite materials. The torch combustion tank is also made of carbon fiber materials, which is characterized by "light, solid and beautiful".
2. Crack multiple technical bottlenecks
In order to use carbon fiber composites in the torch, through the concerted efforts of many parties, the application bottleneck of carbon fiber composites under cold conditions has been successfully solved, the normal use of torch shell in hydrogen combustion environment higher than 800 ℃ has been realized, and the problems such as blistering and cracking of torch shell during high-temperature preparation at 1000 ℃ have been solved.
3. Using hydrogen as fuel to solve problems
Adhering to the concept of "Green Olympics", the Beijing Winter Olympic Games adopts clean and environment-friendly hydrogen fuel in the selection of torch fuel.
There are always various problems in the research process of the torch, but through the unremitting efforts of the research team, many technical problems such as flame color and stability, high-pressure hydrogen storage, safe utilization of hydrogen energy and so on have been successfully solved.
The flame has high safety and reliability, can resist wind level 10, can be used in extremely cold weather, and the decompression ratio is up to hundreds of times. While solving complex problems, it takes into account the requirements of lightweight and miniaturization shape matching.
Sportswear equipment
No matter what kind of sports, a suitable sportswear is particularly important for athletes and can improve athletes' performance to some extent.
1. Speed skating race suit
As an official event in the Winter Olympic Games, short track speed skating has always attracted much attention. Speed skating competition clothes will choose a rubber material with dozens of times stronger elasticity than ordinary fiber in the thigh, which can zuida reduce physical consumption to a certain extent; In the right crotch position, a synthetic fiber will be used, which can effectively reduce friction; In order to reduce air resistance, honeycomb polyurethane materials are used in the hands and feet of speed skating competition clothes. These materials are selected to best improve athletes' performance.
2. Ski helmet
Skiing is a highly ornamental skiing sport, which organically combines speed and skills. Athletes should complete rapid descent and rotation on the steep slopes of towering snow mountains.
When skiing, athletes' heads will emit a lot of heat, so they need to wear breathable and warm helmets. The shell of ski helmet is mainly made of PC (polycarbonate) and ABS (a kind of engineering plastic). The inner shell is generally made of high-density foam material, which can play the best cushioning role after the head is impacted.
New shock absorber
For snow sports, if the level of athletes is the same, the factor affecting the performance is not only the materials used in the equipment, but also the vibration.
The vibration may cause the bottom of the sled to bounce off the snow surface, which reduces the control and reactivity of athletes and limits the sliding speed. Therefore, in skiing events, it is necessary to make the sled close to the snow surface through damping technology, so as to increase the reactivity, control and speed of athletes. The core of shock absorption technology is to reduce the transmission of vibration energy through the energy dissipation characteristics of shock absorbers.