On February 18, Gu Ailing won the final championship of the beijing Winter Olympics freestyle skiing women's U-shaped pool, and in the zhangjiakou awards square of the Winter Olympic Games, the bright five-star red flag was raised in the hands of the honor guard of the army, navy and air force of the Chinese People's Liberation Army, which made countless Chinese people excited. Due to the low temperature at the scene, the honor guard members wore heated gloves in their hands and raised the national flag with "hands". It is worth noting that the core component of the glove is a new generation of safety flexible heating sheet developed by the flexible magnetic and electrical functional materials and devices team of the Ningbo Institute of Materials of the Chinese Academy of Sciences.
It can work in a low temperature environment from minus 20 °C to minus 30 °C
The elastic conductive materials and elastic electrodes developed by the flexible magnetoelectric functional materials and devices team of Ningbo Materials Institute have been transformed into flexible elastic intelligent heaters, elastic intelligent sensors and other products in Ningbo Renhe Technology Co., Ltd., which has been incubated by the institute. "We have integrated and designed a new generation of safety flexible heating sheets with elastic conductive materials, bend-resistant electrodes and carbon nanotube flame retardant composite film materials, which have been industrialized and made into intelligent heating clothing and textiles to send the warmth of winter to the general public." Liu Yiwei, who is engaged in the research of flexible magnetoelectric functional materials and devices at the Ningbo Institute of Materials, said.
Carbon nanotube flame retardant composite film material has the advantages of light and soft, rubbing resistance, and washable. "It can achieve facial heat, far infrared physiotherapy, and has a flame retardant function, comfortable, healthy and safe." Liu Yiwei said that as long as the heating gloves of the honor guard of the three armed services use a rechargeable battery of about 2,000 milliamps and half the size of ordinary mobile phone batteries, they can work for more than 2 hours in a low temperature environment of minus 20 ° C - minus 30 ° C.
"In December 2021, with the accumulation and good reputation of Ningbo Institute of Materials and Tough and Technology in elastic electronic materials and devices, we received an order for heating gloves from the honor guard of the three services at the Winter Olympics." Liu Yiwei said that the team created a new generation of safe flexible heating glove components based on the properties of carbon nanotube flame retardant composite films and elastic conductive materials.
It can be heated to 26 °C-40 °C and not less than 20,000 times folded
In the toughness and technology sample room located in the high-end new material industrial park in our district, the reporter saw a new generation of safe flexible heating glove components. After repeated experiments, the team used carbon nanotube flame retardant composite film material combined with cloth to a thickness of less than 0.3 mm, thinner than the diameter of a human hair, and did not affect the comfort of the hand at all. The reporter touched the heating glove component with his hand, and felt that there was no obvious difference from the softness of ordinary cloth.
Through the infrared tester, the reporter saw that it took only 1 minute to heat the glove assembly and heat up to 22 ° C. "According to the requirements, it can be heated to 26 ° C - 40 ° C, and not less than 20,000 times in half." Liu Yiwei introduced that in order to test the performance of the component, the relevant samples were sent to the northeast region in advance for outdoor environmental testing in winter, and the test results met the requirements.
The team has overcome difficulties such as resistance matching, and specially developed a control circuit board with an area of only 1 square centimeter for heating gloves, so that the control circuit of heating gloves is small and exquisite, and the temperature control is more accurate.
After day and night, carefully built, in mid-January this year, Renhe Technology delivered a new generation of safe and flexible heating glove components on time. With the precise help of science and technology departments in our district, Renhe Technology was rated as a national high-tech enterprise, selected as a second-class project of Xiongzhen Yingcai in the district, and obtained 1200 square meters of office space in the high-end new material industrial park, and the industrialization of a new generation of safety flexible heating sheets, elastic sensors and wearable control systems showed a gratifying development trend.
"Everyone is a participant in the Beijing Winter Olympics. As a scientific and technological worker, it is our responsibility to use the power of hard-core science and technology to warm the 'hand' to protect the Beijing Winter Olympics, and we also hope to help the high-quality development of China's ice and snow sports industry and ice and snow economy, so that more people can participate in ice and snow sports. Liu Yiwei said.
Source: Zhenhai Release