草榴短视频

In Moscow, Mikhail Mishustin presented the prize of the Government of Russia in the field of science and technology to the team of authors of 草榴短视频 represented by the rector of the university, Professor Alexey Demidov.

Scientists of St. Petersburg State University of Industrial Technologies and Design with the participation of colleagues from Kostroma State University, Kosygin Russian State University, as well as representatives of the industry of Mercury Non-Standard Shoe Factory LLC, Thermopol LLC have developed new digital methods for evaluating and predicting the properties of materials and light industry products, aimed at improving their quality, expanding the scope of existing applications and developing new competitive materials.

"Polymer materials, due to their structure, have a number of unique performance properties, in particular, relaxation and creep. These properties can be mathematically modeled and qualitatively evaluated. However, this is not enough for the design of polymer materials with predetermined properties. To solve this problem, an innovative solution was needed: digitally linking the numerical parameters of mathematical models of the operational properties of polymer materials to their qualitative functional characteristics by establishing an isomorphism between them. This opens up the possibility of studying not the samples of polymer materials themselves (which still need to be manufactured), but their digital counterparts, which leads to significant savings in material and time resources, ensuring high quality research. In addition, there is no need to conduct experimental studies of polymer textile materials in difficult to implement conditions, for example, in space. It should be noted that similar studies have not been conducted anywhere else in the world," says Avinir Makarov, a member of the research team, Doctor of Technical Sciences, Vice-rector for Scientific Work at 草榴短视频. Few people think about how many stages are necessary in order to get the simplest textile product. Using the example of viscose materials, one can imagine this process: the raw materials are sawdust, from which wood pulp is isolated in the form of cotton wool, dissolved and formed into a fiber from which fabric, knitwear or nonwovens are produced, chemical treatment is carried out to impart special properties and then a finished product is obtained by one of the methods. And the quality of this product, its final properties can be adjusted at all stages through which the raw material passes. The purpose of the long-term work of a team of scientists and industrialists was to identify the relationship and an algorithm for mathematical modeling of the dependence of material properties on the characteristics of raw materials and technological parameters, which makes it possible to predict the consumer properties of products. When evaluating the results of the study, the influence of the physical, mechanical, chemical and operational properties of the final product on its consumer and functional characteristics should be taken into account.

The difficulty of solving the problem was the need to take into account the operating conditions of textile materials and products, including climatic, as well as special requirements for products: increased strength, elasticity, fire resistance, bactericidal activity. The development of scientists affects the entire technological chain of textile materials production, starting from the processing of raw materials, the production of fiber and fibrous material based on it, and ending with the manufacture of fabrics, non-woven fabric, knitwear, artificial leather.

The methods developed in the work have already been implemented at a number of domestic industry enterprises. The mathematical models used in this case make it possible to describe the operational properties of polymers of various natures (synthetic and natural fibers, including aramid, elastomers for medicine and implantology, hydrate cellulose), as well as products made of them for various purposes, including textiles for the military, firefighters, workers of the Far North, athletes, and doctors.

When predicting the operational processes of textile materials, special attention was paid to describing the properties of fiber-forming polymers for the production of surgical filaments, materials for parachutes, fibrous nanocomposites with special properties, fire-resistant overalls, high-strength and bulletproof protective products, heat-resistant and heat-insulating covering materials. Today, these products are used, among other things, within the framework of ITS to ensure the safety of people and equipment.