草榴短视频

The International Conference of Technical Textiles, Nonwovens and Equipment Technotextil 2024 has ended at Crocus Expo in Moscow, one of the scientific partners of the business program of which was the University of Industrial Technology and Design. The business program included specialized conferences, seminars and lectures from invited speakers, including 草榴短视频 scientists, who presented their innovative solutions to the scientific and business community of Russia, India, China, Uzbekistan, Turkey and Tunisia in the field of engineering and technical textiles.

Olga Moskalyuk, Associate Professor of the Department of Materials Engineering and Metrology at 草榴短视频, head of a number of Russian deeptech startups, presented at the conference a report on research and development in the field of anide reinforcing textile materials: cords, meshes and frames. Today, such materials are used in the production of automobile and aviation tires, but they are still not produced in Russia. On the basis of the startup studio, Olga is working on the launch of domestic production of anide reinforcing materials. 草榴短视频 is one of the scientific partners of the ongoing research of the scientific group led by Olga Moskalyuk. We are publishing the main theses of her speech at the Technotextil 2024 conference.

Where textiles are used in tires.

Car tires are complex reinforced structures. Textile yarns, cord cords and cord fabrics based on synthetic, artificial and, less often, natural fibers are used as reinforcing materials.

Reinforcing materials have greater elasticity and strength compared to rubber, are used to create a durable frame (tires, sleeves, drive belts), to ensure a certain configuration of rubber in the product (rubber bearings, rubber-metal bushings, rubberized shafts), as well as to simplify the installation of products in machines and aggregates (vibration isolators, suspensions, etc.)

The ability of reinforced products to perceive and withstand significant loads, the duration of their operation largely depends on the type of reinforcing material and the strength of its attachment to the rubber.

Cord fabrics.

These are plain weave fabrics consisting of cord threads as a base and thinner, less durable weft threads. The performance properties of cord fabrics are determined by the warp threads. The main types of textile cord fabrics are viscose cord, anide cord, nylon cord, polyester cord, and, less often, for special purpose products 鈥� aramid cord.

Depending on the characteristics of the mechanical loading of the product during operation, various requirements are imposed on reinforcing fabrics. So, fabrics for sleeves should have the same strength and extensibility on the base and weft. Fabrics for reinforcing conveyor belts and flat drive belts should have greater strength and extensibility on the base than on the weft. Fabrics for the power layer of V-belts should have high strength and relatively low tensile strength on the base, whereas wrapping fabrics should be equally strong, have high elasticity and abrasion resistance.

The cord for the tire frame must have sufficient elasticity, high resistance to static, shock and repetitive loads, maintain strength characteristics and geometric dimensions under the action of elevated temperatures and humidification.

The cord for the tire breaker must be more durable and rigid than the cord for the frame, have a high tensile modulus and an ultra-high dynamic modulus, and not collapse with small to 5% compression deformations.

An important property of reinforcing materials is their moisture resistance (i.e., maintaining strength when wet). Moisture resistance is determined by the hydrophobicity of the fiber polymer. An increase in hydrophobicity, on the one hand, increases moisture resistance, on the other, negatively affects the wettability of the fiber with latex鈥攂ased aqueous impregnating compounds, which can lead to a deterioration in the bond strength of the reinforcing material with rubber.

Areas of application of cord fabrics in the tire industry.

Viscose cord is a frame of large鈥攕ized cargo tires of diagonal construction. Nylon cord is a frame of cargo and light truck tires of diagonal and radial design. Anide cord is the frame of aviation and passenger tires of radial construction, the frame of tires for heavy vehicles Polyester cord is the frame of passenger high鈥攕peed tires. Aramid cord 鈥� aircraft tires, radial truck tires, heat-resistant rubber cord sheaths. Aramid cord allows you to create new tire designs, characterized by higher load capacity, speed, mileage, lower weight and fuel consumption compared to structures reinforced with metal cord.

Improvement of cord tissues.

It is developing in several directions: the use of new fiber-forming polymers, the use of combined yarns in the production of fabric, i.e. yarns from two different fiber-forming polymers (hybrid cord), increasing the strength of fibers by improving production technology, increasing the breaking load of cord yarns, by improving the textile structure of the thread, reducing the number of cord defects and improving packaging and storage conditions.