Effect of different additives on the physical and mechanical properties of liquid-glass core mixtures

In the article, it was determined that furan oligomer added to the composition causes additional structuring in the process of vulcanization, and as a result, the density and hardness of the vulcanization network in the composite increases, and the value of the relative length decreases. It was shown that the optimal amount of furan oligomers in the composition of rubber compounds is equal to 10 weight units per 100 weight units of rubber. With the inclusion of the secondary product of acetylene production in the elastomer compositions, it was found that the amount of carbon-rubber gel and the vulcanization network increased, and the level of vulcanizate shrinkage decreased, which was shown to be mainly due to the presence of oligomeric components on the surface of carbon particles. It is shown that the inclusion of this raw material in elastomeric compositions based on butadiene nitrile rubber increases the interaction at the “rubber-filler” boundary and the formation of additional bonds between rubber macromolecules and functional groups of the oligomer, and as a result, the overall technological and technical properties of the compositions are improved.

Section: Resultsmentioning

confidence: 99%

Creation of special compositions based on butadiene-nitrile elastomers for diesels

Mamayev,

Ibadullayev,

Nigmatova

et al. 2023

“…The elastic properties of ball bearings as a factor affecting the accuracy of machines and devices are the subject of research in the works of L.V.Novikov, V.A.Pavlov, V.A. Nikitin [19][20][21][22][23][24][25].…”

Section: Introductionmentioning

confidence: 99%

Shafts of technological machines with combined supports

Yunusov,

Kenjayev,

Makhmudova

2023

This article discusses experimental studies of a saw cylinder (SC) composite shaft with combined support. We proposed a new design of the support that provides a reduction in the shaft. The article considers the influence of changing the parameters of the elastic element of the support of the composite shaft (CS) of the SC using the ANSYS software, calculates and analyzes the reaction forces of the supports for different parameters of the elastic elements, and also considers the effect on the stresses of the system, as well as the results of experimental and comparative tests in production conditions on the SC of the cotton gin machines with a composite bearing, where the parameters of the elastic element differ from each other by different elasticity. The fiberization process took place according to the established technological parameters. The experimental and standard SC models were compared during the experiment.

“…The Licomont BS 100 additive inclusion leads to a greater decrease in the viscosity of the binder at process temperatures than the Sasobit additive [14][15]. According to [12] Licomont BS increases the adhesion of bitumen-mineral mixtures determined by the "rotating bottle" method.…”

Section: Introductionmentioning

confidence: 99%

The effect comparative evaluation of energy-saving additives on the bitumen properties

Riskulov,

Sidikova,

Khakimov

et al. 2023