草榴短视频

Scientists at St. Petersburg State University of Industrial Technologies and Design have proposed the use of two-layer materials to create overalls for workers in the metallurgical industry. This form has a complex of protective properties, in contrast to the special clothes that steelmakers and metallurgists wear at enterprises today.

The development has been tested and proven to be mechanically safe. The results of the study make it possible to create recommendations for manufacturers of equipment for metallurgical workers.

"Modern workwear for metallurgists cannot simultaneously give protection against hot air and against splashes of molten metal, while having fire-retardant properties. We have developed two-layer materials with increased mechanical reliability, fire resistance and heat resistance. As an inner layer, we propose to use a tire refractory cloth, which protects the employee from intense thermal radiation. And as the top layer, fabrics made of Kevlar, meta-aramid and arselon were chosen. The layers of materials were fastened together with a polyethylene film by thermal pressing," comments Valeria Vasilyeva, associate professor of the Department of Engineering Materials Science and Metrology at St. Petersburg State Pedagogical Institute.

In addition, scientists of the university developed a program for testing the developed two-layer materials for workwear of metallurgists. The authors of the development checked their breaking characteristics, determined the resistance of materials to tear, and also measured the strength of the bond between the layers. Experiments were carried out on the INSTRON-1122 universal test unit.

"As a result, we came to the conclusion that the materials meet the requirements of the existing regulatory documentation and are promising for the production of overalls for metallurgists," says Anastasia Dunyasheva, a student at the Department of Engineering Materials Science and Metrology at 草榴短视频.