Vestnik of Vitebsk State Technological University

16-24

Authors: Pavel Dzerkachenka, Alexander Burkin

The aim of the research is to assess and analyze the physical and mechanical properties of cardboards for stiffeners, as well as to develop an integral quality indicator that allows determining the best sample of materials. The object of research is modern leather cartons used for the production of stiffeners. The subject of research is their physical and mechanical properties. The article describes a set of indicators selected to evaluate the physical and mechanical properties of cardboard for stiffeners. Their characteristics and methods of assessment are given, the obtained data are presented. The results of assessing the quality of materials for stiffeners as a complex of their property indicators are discussed. The method used is an integral quality assessment method. As the result of the work the best article of cardboard for using in the production stiffeners is determined. The application area of the results is the footwear industry.

34-42

Authors: Katsirina Mileeva, Galina Kazarnovskaya

The paper solves the problems of creating a technology for producing costume jacquard fabrics using a mixed harness ties of arched cords into a kossein board, designed to produce tablecloth cloths with a border pattern on the OptiMax-4 loom of the Picanol company with a Bonas jacquard machine in the conditions of the Orsha Flax Processing Plant. The rational dimensions of the pattern rapport on the basis, the compositional features of the pattern, the types of patterns of interlacing are determined, allowing to exclude the presence of spoilage at the junction of the reverse and ordinary harness ties. Recommendations have been developed for adjusting the number of warp threads in the filling of the loom. As a result of the work done, costume fabrics were created on the basis of technology including filling of a loom for the production of jacquard tablecloths with a border pattern, the types and methods of constructing weaves were determined, allowing to obtain fabrics of high artistic and coloristic design and quality.

51-58

Authors: Darya Pankevich, Igor Bulanchikov

The article is devoted to the evaluation of the wear resistance of threaded seams of membrane materials on the knitted basis in the simulation of operation according to the criterion of reduction of strength indicators. As a result of the experiment, it has been detected that the breaking load of all the studied samples of thread seams practically does not change when the tensile strength increases in the range from 0 to 25 %, both along and across the seam. Absolute elongation of all specimens decreases with increasing percentage of specimen stretch when simulating operational loads, but it is not critical. Threaded seams of three-layer membrane materials on a knitted base made using the modes recommended in the article are characterized by stable strength and sufficient wear resistance.

73-80

Authors: Dzmitry Ryklin, Dzmitry Kvetkovsky

The object of research is antistatic fabrics containing Bekinox steel fibers. The aim of the work is to determine the minimum percentage of Bekinox fibers in a fabric which provides a required level of antistatic properties. The information received will be used for development of the method to design fabrics for special application. As a result of statistical processing of experimental data a mathematical model was developed that describes the dependence of the surface electrical resistance of fabric on the Bekinox steel fibers percentage in their structure in the range from 0 to 1 %. It was found that the deviation of the observed value of the electrical resistance of fabrics from the predicted one does not exceed 1 degree of order regardless of the location of antistatic yarns in their structure. Based on the analysis of the resulting model and the requirements for antistatic fabrics recommendations for their design have been developed.

90-103

Authors: Svetlana Furashova, Tatsiana Borisova

Currently, the range of manufactured shoes of thread fastening methods for special purposes is quite diverse. Traditionally used rigid leathers for the details of the bottom of shoes of thread fastening methods increase the cost and complexity of shoe manufacturing, since they require the introduction of a large number of processing operations into the technological process. In this regard, at enterprises specializing in the production of shoes with thread fastening methods, there was a need to find a cheaper and more affordable analogue of hard leathers. The purpose of this work is to study the physical, mechanical, technological and operational properties of shelving cartons intended for shoes of thread fastening methods, in order to select the substrate material for shoes of a sandal-adhesive method of fastening for special purposes, which has the necessary set of properties. In accordance with standard methods, the physical and mechanical properties of cartons intended for shoe parts of thread fastening methods are studied: tensile strength, stiffness under static bending, water ratio and delamination resistance. The adhesive ability of the cartons and the optimal stitching frequency were determined, which ensures the normative strength of the thread seam. The analysis of physical and mechanical properties, the results of production testing and experimental wear showed that Ibisolex cardboard can be used for the substrate in shoes of the sandal-adhesive method of fastening, since it has the necessary complex of properties, reduces the complexity of shoe manufacturing and its cost.

115-123

Authors: Elena Lashkina

A method has been developed for the production of multifunctional polymer film materials based on high-pressure polyethylene by modifying the polymer matrix with chemically active reagents: insecticides (class synthetic pyrethroids (permethrin, cypermethrin, β-cypermethrin) organophosphorus compounds (pyrimiphos-methyl), neonicotinoids (imidacloprid)), fine particles of calcium carbonate, UV-absorbent class hydroxybenzophenones, optimized for physical, physical-chemical properties, microbiological activity Studies by the method of IR spectroscopy have shown that in insecticidal polymer composites, an ether bond is formed between the molecules of the components. Insecticide molecules immobilized in the loose structure of calcium carbonate particles retain their mobility and ability to evaporate, providing a prolonged action of the film. The developed samples of insecticidal polymer films will reduce losses from biological damage to light industry products packed in film cases.

132-140

Authors: Dzmitry Mytsko, Petr Vaytsekhovich

The paper, discusses one of the important problems associated with environmental pollution due to the entrainment of liquid droplets from the mass transfer apparatus together with chemically hazardous elements. Experimental studies have been carried out and graphical dependences of the change in the value of the relative spray loss on the gas flow rate and irrigation density for three types of zigzag regularly-structured packing have been obtained. The influence of the dimensions of the triangular cell of the packings and the separation space on the size of the spray loss is described, and the most effective variant of their installation in the mass transfer apparatus is determined. A technique for calculating unknown coefficients of the empirical regression equation is presented. Equations for determining the relative spray loss are obtained. The relative error has been calculated. Recommendations are given on the operation of packed mass transfer apparatus at maximum fictitious speeds.

152-160

Authors: Irina Prokhorenkova, Elena Demchenko

The article examines the development trends of the sports services market, taking into account the industry factor, features of mass sports, forms of physical activity of consumers. The main directions of mass sports marketing in the Republic of Belarus are revealed: children, school and student sports, sports of veterans, sports of people with disabilities; wellness fitness; spontaneous sports. The socio-economic content of eco-trails as a joint product in the field of sports services and ecological tourism has been investigated. The most popular eco-trails of the Republic of Belarus are determined, their classification is given and the advantages of creation for economic entities are analyzed. The authors carried out a marketing study of the target audience, gave practical recommendations for promoting this sports service, taking into account consumer preferences, strengthening loyalty and informing the client, crossselling.

179-190

Authors: Olga Sovetnikova, Olga Levshitskaya

In the context of market reforms, expansion and deepening of the integration of the Republic of Belarus and China into the system of world economic relations, the role of foreign trade in the economic development of countries has significantly increased. China is gradually becoming not only the world's largest producer of goods, the most important exporter and importer of capital, but also a source of global economic growth. In the article, the authors analyzed the place and role of the People's Republic of China in the foreign trade turnover of the Republic of Belarus; analyzed the foreign trade balance of the People's Republic of China and the Republic of Belarus, as well as the volume and structure of exports of the Republic of Belarus and the People's Republic of China; studied the issue of state regulation of foreign trade in the People's Republic of China and the Republic of Belarus, and also developed directions for the development of foreign trade cooperation between the Republic of Belarus and the People's Republic of China.