Voronezh, Voronezh, Russian Federation
Russian Federation
Voronezh, Voronezh, Russian Federation
Voronezh, Voronezh, Russian Federation
Voronezh, Voronezh, Russian Federation
Voronezh, Voronezh, Russian Federation
Drevesina yabloni yavlyaetsya cenneyshim materialom i shiroko ispol'zuetsya dlya izgotovleniya razlichnyh izdeliy, v tom chisle i vysokohudozhestvennyh podelok, blagodarya svoim vysokim dekorativnym i prochnostnym svoystvam (plotnosti i tverdosti). Eta drevesina yavlyaetsya sil'nousyhayuschey i sklonna k korobleniyu i rastreskivaniyu, v svyazi s chem ee otnosyat k trudnosohnuschim porodam. Poluchenie kachestvennoy vysushennoy drevesiny vozmozhno pri ispol'zovanii tehnologii atmosfernoy sushki ili kamernoy myagkimi rezhimami, sochetaya ih s vlagoteploobrabotkoy. Poetomu na praktike bol'shoe znachenie imeyut svedeniya o kinetike i dinamike processa sushki. Dlya opisaniya processov vysyhaniya i uvlazhneniya drevesiny neobhodimo znat' velichinu ee koefficienta vlagoprovodnosti. Vlagoprovodnost' drevesiny zavisit ot mnogih faktorov: plotnosti, napravleniya toka vlagi, vlazhnosti, anatomicheskoy struktury, temperatury i dr. Odnim iz faktorov, okazyvayuschih naibol'shee vliyanie na vlagoprovodnost' drevesiny, yavlyaetsya temperatura. Pri povyshenii temperatury vlagoprovodnost' drevesiny suschestvenno vozrastaet vsledstvie vozrastaniya koefficienta diffuzii kak para, tak i vlagi, nahodyascheysya v zhidkoy faze. Koefficient vlagoprovodnosti byl opredelen eksperimental'no metodom stacionarnogo toka vlagi v tangencial'nom napravlenii dlya zabolonnoy i yadrovoy drevesiny yabloni. V rezul'tate vypolnennogo issledovaniya ustanovleno izmenenie koefficienta vlagoprovodnosti zabolonnoy i yadrovoy drevesiny yabloni v intervale vlazhnosti ot 5 do 25 % i pri temperature 20 °S i 60 °S. Opredeleno razlichie vlagoprovodnosti zabolonnoy drevesiny i yadrovoy. Poluchennye rezul'taty pozvolyat proizvesti analiticheskie raschety processov vysyhaniya i uvlazhneniya drevesiny, razrabotat' racional'nye rezhimy kamernoy sushki i rekomendacii dlya tehnologii atmosfernoy sushki.
drevesina yabloni, temperatura, plotnost', vlazhnost', yadro, zabolon', koefficient vlagoprovodnosti
1. Alpatkina, R. P. O vlagoprovodnosti drevesiny vazhneyshih otechestvennyh porod [Tekst] / R. P. Alpatkina // Derevoobrabatyvayuschaya promyshlennost'. − 1967. − № 9. − S. 12-14.
2. Arcihovskaya, N. V. Issledovanie peredvizheniya vlagi v drevesine v processe vysyhaniya [Tekst] / N. V. Arcihovskaya // Trudy instituta lesa. − M. : Izd-vo AN SSSR, 1957. - T. 9. − S. 158-185.
3. Lykov, A. V. Teoriya sushki [Tekst] / A. V. Lykov. − M. : Energiya, 1968. − 328 s.
4. Platonov, A. D. Intensifikaciya processa sushki drevesiny trudnosohnuschih porod [Tekst] : avtoref. dis. … d-ra tehn. nauk: 05.21.05 / A. D. Platonov. - Voronezh, 2006. - 32 s.
5. Platonov, A. D. Issledovanie vlagoprovodnosti drevesiny posle himicheskoy obrabotki [Tekst] / A. D. Platonov // Vestnik Moskovskogo gosudarstvennogo universiteta lesa - Lesnoy vestnik. - 2005. - № 2. - S. 56-63.
6. Sergovskiy, P. S. Raschet processov vysyhaniya i uvlazhneniya drevesiny [Tekst] / P. S. Sergovskiy. − M. :Goslesbumizdat, 1952. − 75 s.
7. Solute diffusion into cell walls in solution-impregnated wood under conditioning process I: effect of relative humidity on solute diffusivity [Text] / S. Tanaka, M. Seki, T. Miki, I. Shigematsu, K. Kanayama // Journal of Wood Science. - 2015. - Vol. 61. - P. 543-551.
8. Solute diffusion into cell walls in solution-impregnated wood under conditioning process II: effect of solution concentration on solute diffusion [Text] / S. Tanaka, M. Seki, T. Miki, I. Shigematsu, K. Kanayama // Journal of Wood Science. - 2016. - Vol. 62. - P. 146-155.
9. Solute diffusion into cell walls in solution-impregnated wood under conditioning process III: effect of relative-humidity schedule on solute diffusion into shrinking cell walls [Text] / S. Tanaka, M. Seki, T. Miki, I. Shigematsu, K. Umemura, K. Kanayama // Journal of Wood Science. - 2017. - Vol. 63. - P. 263-270.
10. Solute diffusion into cell walls in solution-impregnated wood under conditioning process IV: effect of temperature on solute diffusivity [Text] / S. Tanaka, M. Seki, T. Miki, K. Umemura, K. Kanayama // Journal of Wood Science. - 2017. - Vol. 63. - P. 644-651.
11. Effect of solvent evaporation rate on solute diffusion into cell walls in solution-impregnated wood under conditioning process [Text] / S. Tanaka, M. Seki, T. Miki, I. Shigematsu, K. Umemura, K. Kanayama // J. Soc. Mater. Sci. Japan. - Vol. 65. - P. 359-364. (in Japanese)
