448

  • Internet havola
  • DOI
  • UzSCI tizimida yaratilgan sana 18-12-2020
  • O'qishlar soni 438
  • Nashr sanasi 20-11-2020
  • Asosiy tilO'zbek
  • Sahifalar18-24
Kalit so'z
English

Both raw and recycled fiber materials are used for paper production. The increase in percentage use of the latter is due to their paper-forming properties, availability and low cost. The article explores the possibility of using pulp from the inner layer of mulberry twig bark. Mulberry twigs, after removing leaves, which are the main raw material in silk production, have no practical industrial application. Recycling waste - mulberry branches - for the production of pulp is therefore relevant as it is aimed at solving raw material and environmental problems. The purpose of this work is to use local raw materials for paper production, study the impact of processing method of the grinding process on paper forming properties. During grinding the mechanical processes of changes of fibers determine mainly structure of a paper sheet, and colloidal-physical processes - bind and ability of fibers to form strong, homogenous and smooth structure of paper. The structure of the sheet of paper facilitates excessive or "selective" ink absorption into the pores of the paper and thus predetermines the quality of reproduction during the printing process.  Methods for determining the physical and mechanical properties of papers were used in this work, and changes in the surface structure of samples cast at various technological modes of the milling process were studied. The results of the study revealed that the addition of cellulose mass from the inner layer of mulberry twig bark helps to obtain a strong paper. The optical properties of the paper, which contains cotton and cellulose from the inner layer of mulberry branch bark, are explained by the whiteness of the added fibers themselves. The strength properties of the paper at a weight grinding degree of 300 CWR are explained by the bond between the split and strongly interwoven fibers of the cellulose fibers. It has been established that the addition of more than 30% cellulose from the inner layer of the mulberry branch bark to the paper pulp mass is undesirable, as this adversely affects the whiteness of the paper.

№ Havola nomi
1 1. Baratov, A.N.; Konstantinova, N.N.; Molchadsky, I.S. Fire hazard of the textile materials // M, 2006. -273 p.
2 Zubkova, N.S.; Antonov, Yu.S. Textile materials combustibility reduction - the solution of ecological and socio-economic problems // Russian Chemical Journal (Journal of Mendeleev Russian Chemical Society). М, 2002. T. XLVI. № 1. pages 96–102 (in Russian).
3 Sabirzyanova, R.N. Application of the bloating flame retardant for giving the materials fire resistance // Vestnik of Kazan National Research Technological University. Т.17. №19. 2014. pages 140-142 (in Russian).
4 . Sabirzyanova, R.N. Investigation of the inflammable flame retardants influence on the textile materials fire resistance increase // Vestnik of Kazan National Research Technological University. Т.17. №3. 2014. pages 53-54 (in Russian).
5 Balakin, V.M. Primary estimation of the fire-protective properties of the swelling up coatings on the basis of the various water dispersions // Fire explosion safety. М, 2010. Т. 19. № 6. pages 14-19 (in Russian).
6 Sabirzyanova, R.N. Application of the bloating flame retardant for giving the materials fire resistance // Vestnik of Kazan National Research Technological University. 2014. Т.17. №19. С. 140-142 (in Russian).
7 Kremenetskaya, I., Tereshchenko, S., Alekseeva, S., Mosendz, I., Slukovskaya, M., Ivanova, L., & Mikhailova, I. (2019). Vermiculite-lizardite ameliorants from mining waste. In IOP Conference Series: Earth and Environmental Science (Vol. 368). Institute of Physics Publishing. doi.org/10.1088/1755-1315/368/1/012027
8 Ma, L., Su, X., Xi, Y., Wei, J., Liang, X., Zhu, J., & He, H. (2019). The structural change of vermiculite during dehydration processes: A real-time in-situ XRD method. Applied Clay Science, 183. doi.org/10.1016/j.clay.2019.105332
9 Feng, J., Liu, M., Fu, L., Ma, S., Yang, J., Mo, W., & Su, X. (2020). Study on the influence mechanism of Mg2+ modification on vermiculite thermal expansion based on molecular dynamics simulation. Ceramics International, 46(5), 6413–6417. doi.org/10.1016/j.ceramint.2019.11.119
10 Liu, Y., Gao, C., Wang, Y., He, L., Lu, H., & Yang, S. (2020). Vermiculite modification increases carbon retention and stability of rice straw biochar at different carbonization temperatures. Journal of Cleaner Production, 254 . https://doi.org/10.1016/j.jclepro.2020.120111
11 Berlin, A.A. Polymer burning and the polymer materials of the reduced combustibility // Sorosovsky educational journal. №9. 1996. Pages 57-69 (in Russian).
12 Hanifi Binici., Orhan Aksogan. Fire resistance of composite made with waste cardboard, gypsum, pumice, perlite, vermiculite and zeolite // SN Applied Sciences. Springer Nature jurnal. 2019. 1:1244 doi.org/10.1007/s42452-019-0720-0
13 Suvorov S.A., Skurikhin V.V. Vermiculite – a promising material for high-temperature heat insulation, Refract. Ind. Ceram 44 (3) 2003. P. 186-193.
14 S. Abdul Rahman, G. Babu, An experimental investigation on light weight cement concrete using vermiculite minerals, Int. J. Innovative Res. Sci. Eng.Technol. 5 (2) 2016. P. 2389–2392.
15 S. Abidi, Y. Joliff, C. Favotto. Impact of perlite, vermiculite and cement on the Young modulus of a plaster composite material: experimental, analytical and numerical approaches, Compos. B 92. 2016. -P. 28–36.
16 Rashad A.M. Vermiculite as a construction material – A short guide for Civil Engineer // Construction and Building Materials. -№125. -2016. -Pages 53-62.
17 Ismailov, R.I.; Khaidarov, I.N. Application of the bloating flame retardant for giving the materials the fire resistance // Proc. of International conference "Modern innovations: Chemistry and chemical technology of acetylene compounds. Petrochemistry. Catalysis", Tashkent. 15-16 November. 2018. Pages 174-175 (in Russian).
18 18. I.N.Khaydarov, R.I.Ismailov. Compositions on the basis of vermiculite intended for the materials of technical purpose // Republican scientific and technical conference "Resource- and energy-saving, ecologically harmless composite and nanocomposite materials", Tashkent. April 25-26. 2019. Pages 66-67 (in Russian).
19 19. Khaydarov, I.N.; Ismailov, R.I. Investigation of fire resistance of cellulose materials physically modified with antipyrene suspensions // Universum, Moscow. 2020. No. 6 (75) part3. 2020. №6. Pages 67-71 (in Russian).
20 20. Khaydarov I.N., Ismailov R.I. Study of properties and composition of vermiculite for use as suspension antypirenes for textile materials // Technical science and innovation, Tashkent. 2020. №2. Pages 34-38.
21 Savitskaya T.A., Shimanovich M.P. Workshop on colloid chemistry. "Surface appearances". -Minsk. -BSU, 2003. - – 100 p.
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