Influence of the nature of the grind is considered In article on mechanical characteristic of the
paper on base cotton with different percent accompaniment of the wheat cellulose. The Known
that process of the milling of the paper mass is conducted solely big importance in creation the
most varied characteristic paper sheet. Depending on the duration of the grinding, the nature of
the degree of grinding and the properties of the paper change. For example, with a low (cage)
degree of grinding the pulp, it is predominantly chopped fibers above the surface fibrillation,
resulting in a loose and porous sheet structure. To obtain a dense, closed and strong sheet
structure, a high degree of grinding of the mass (greasy mass) is necessary, ensuring the
predominance of fibrillated fibers with a well-developed surface. Studies have established that
the duration of milling of pulp from coniferous species of wood with sulfate bleached ennobled at
150 minutes achieves a degree of grinding of 60 ShR ° C, then 10 minutes are enough for straw
sulfate bleached. It Is Installed that for reception of the paper with accompaniment of the wheat
cellulose with mechanical toughness, being up to quality standard, sufficient degree of the grind
40
0
ShR and does not follow to use the thick concentration of the mass. The Studies of the
influence composite composition on toughness of the paper has revealled that under 10% before
Chemistry and chemical technology
101
20% accompaniment of the wheat cellulose is provided stability of importances, the most further
accompaniment promotes the reception of the porous paper.
Maqolada yanchilish tavsifining turlicha foizlarda bug’doy cellyulozasi qo'shilgan
qog’ozlarning mehanik xossalariga ta'siri ko'rib chiqilgan. Ma'lumki, qog’oz varag’ining turlituman hossalarini yaratishda qog’oz massasining yanchilishi jarayoniga katta ahamiyat
qaratiladi. Yanchishning davomiyligiga bog’liq holda yanchilish darajasi tavsifi va qog’ozning
hossalari o'zgaradi. Masalan, qog’oz massasini yanchish darajasi past bo'lganda yuzadan
fibrillanish ustida tolalarning asosan uzilishi ta'minlanadi, buning natijasida yumshoq va
g’ovakli qog’oz tuzilmasi hosil bo'ladi. Varaqning tuzilmasi zich va mustahkam bo'lishi uchun
yuzasiga yahshi ishlov berilgan fibrillangan tolalarning ustuvorlik qilishi ta'minlanadigan
massani yanchishning yuqori darajasi talab qilinadi. Tadqiqotlarda aniqlandiki, ignabargli
yog’och navlaridan olinadigan sul’fatli oqartirilgan pardozlangan cellyulozani yanchish
davomiyligi 150 daqiqa bo'lganda 60
o
SHR yanchish darajasiga erishilsa, somondan
olinadigan sulьfatli oqartirilgan cellyuloza uchun 10 daqiqa etarli. Aniqlandiki, standart
talablariga javob beruvchi mehanik mustahkamlikka ega bo'lgan, bug’doy cellyulozasi
qo'shilgan qog’oz olish uchun yanchilish darajasi 40
o
SHR bo'lishi etarli va massaning quyuq
konsistenciyasidan foydalanish kerak emas. Kompozicion tarkibning qoqozning
mustahkamligiga ta'sirini tadqiq qilish shuni ko'rsatdiki, bug’doy cellyulozasi 10 dan 20 %
gacha qo'shilganda qiymatlarning barqarorligi ta'minlanadi, keyinchalik yana qo'shish g’ovakli
qog’oz olinishiga hizmat qiladi.
Influence of the nature of the grind is considered In article on mechanical characteristic of the
paper on base cotton with different percent accompaniment of the wheat cellulose. The Known
that process of the milling of the paper mass is conducted solely big importance in creation the
most varied characteristic paper sheet. Depending on the duration of the grinding, the nature of
the degree of grinding and the properties of the paper change. For example, with a low (cage)
degree of grinding the pulp, it is predominantly chopped fibers above the surface fibrillation,
resulting in a loose and porous sheet structure. To obtain a dense, closed and strong sheet
structure, a high degree of grinding of the mass (greasy mass) is necessary, ensuring the
predominance of fibrillated fibers with a well-developed surface. Studies have established that
the duration of milling of pulp from coniferous species of wood with sulfate bleached ennobled at
150 minutes achieves a degree of grinding of 60 ShR ° C, then 10 minutes are enough for straw
sulfate bleached. It Is Installed that for reception of the paper with accompaniment of the wheat
cellulose with mechanical toughness, being up to quality standard, sufficient degree of the grind
40
0
ShR and does not follow to use the thick concentration of the mass. The Studies of the
influence composite composition on toughness of the paper has revealled that under 10% before
Chemistry and chemical technology
101
20% accompaniment of the wheat cellulose is provided stability of importances, the most further
accompaniment promotes the reception of the porous paper.
В статье рассмотрено влияние характера помола на механические свойства бумаги
на основе хлопковой целлюлозы с различным процентным добавлением пшеничной
целлюлозы. Известно, что процессу размола бумажной массы отводится исключительно
большое значение в создании самых разнообразных свойств бумажного листа. В
зависимости от продолжительности размола меняется характер степени помола и
свойства бумаги. Например, при низкой степени помола бумажной массы
обеспечивается преимущественно рубка волокон над поверхностным фибриллированием,
в результате образуется рыхлая и пористая структура листа. Для получения плотной,
сомкнутой и прочной структуры листа необходима высокая степень помола массы
(жирная масса), обеспечивающая преобладание фибриллированных волокон с хорошо
разработанной поверхностью. Исследованиями установлено, что если
продолжительность размола у целлюлозы из хвойных пород древесины сульфатной
беленой облагороженной при 150 мин достигается степень помола 60 ºШР, то для
соломенной сульфатной беленой достаточно 10 мин. Установлено, что для получения
бумаги на основе хлопковой целлюлозы с добавлением пшеничной целлюлозы с
механической прочностью, соответствующей требованиям стандарта, достаточна
степень помола 40
0
ШР и не следует использовать густую концентрацию массы.
Исследования влияния композиционного состава на прочность бумаги выявили, что при
10% до 20%-ом добавлении пшеничной целлюлозы обеспечивается стабильность
значений, дальнейшее добавление способствует получению пористой бумаги.
| № | Муаллифнинг исми | Лавозими | Ташкилот номи |
|---|---|---|---|
| 1 | Atakhanova N.K. | bakalavr | Ташкентского института текстильной и легкой промышленности |
| 2 | Galimova Z.K. | assistent | Ташкентского института текстильной и легкой промышленности |
| 3 | Babahanova K.A. | professor | Ташкентского института текстильной и легкой промышленности |
| № | Ҳавола номи |
|---|---|
| 1 | Kozarovitskiy A.A. Bumaga i kraska v protsesse pechataniY. – M.: Kniga, 1965. – 368 p. 2. Alimova X.A. Osnovi bezotxodnoy texnologii pererabotki naturalnogo shelka: dis. … dokt. texn. nauk. – Tashkent, 1994. – 264 p. 3. Axmedova Z.A., Babaxanova X.A. Vliyaniye kompozitsii bumagi na kachestvo pechati // Problemi tekstilya – Tashkent, 2013. – №2. – S. 98-102. 4. Axmedova Z.A., Babaxanova X.A. Otsenka vliyaniya svoystv bumag na kachestvo vosproizvedeniya // Vestnik. – SPb: SPGUTD, 2013. – № 2. – S. 43-45. 3142 3901 3666 3713 4371 3666 5264 3142 5140 5140 3442 3564 3199 4700 0 1000 2000 3000 4000 5000 6000 1 2 3 4 5 6 7 Breaking length, m On grinding degree 60 ShR On grinding degree 42 ShR Chemistry and chemical technology 105 5. Babaxanova X.A., Alimova X.A. Issledovaniye mexanicheskoy prochnosti bumagi s vklyucheniyem voloknistix otxodov tekstilnoy promishlennosti// Ipak – Tashkent, 1999. – №4. – S. 44-46. 6. Babaxanova X.A., Alimova X.A. Izucheniye svoystv bumag, izgotovlennix iz voloknistix otxodov tekstilnoy promishlennosti// Rastr – Tashkent, 1999. – №3. – S. 31-32. 7. Babaxanova X.A., Alimova X.A. Vliyaniye solnechnoy radiatsii na ekspluatatsionniye svoystva bumagi, izgotovlennoy iz volokon naturalnogo shyolka i kenafa// Ipak – Tashkent, 1999. – №4. – S. 46-48. 8. Babaxanova X.A., Alimova X.A. Bumaga iz otxodov tekstilnoy promishlennosti// Poligrafiya – M., 2000. – №1. – S. 96-97. 9. Babaxanova X.A., Alimova X.A. K otsenke effekta primeneniya v bumajnix izdeliyax otxodov naturalnogo shyolka i kenafa// Ipak – Tashkent, 2000. – №1. – S. 20-21. 10. Babaxanova X.A. Pechatno-texnicheskiye svoystva bumag s komponentami volokon shelka i kenafa: dis. … kand. texn. nauk. – Tashkent: TITLP, 2000. – 132 p. 11. Babahanova X.A. Paper with addition textile industry waste// Proceeding of joint scientific seminar of winners of “Istedod” Foundation of President of the Republic of Uzbekistan and Shanghai University scientists// Shanghai University, 2005. – S. 36-37. 12. Texnologiya sellyulozno-bumajnogo proizvodstva. Spravochniye materiali. – SPb: Politexnika, 2006. – T.1. 13. Smirh M.K. Formation potential of west coast kraft pulps// Pulp&Paper Canada, Vol.87, N10. – P. 387-394 14. Kajanto I.M. The effect of formation on absolute print unevenness in offset printing, Pap. Puu. – 1990. Vol.72, N6. – P. 600-610 15. Flyate.D.M. Svoystva bumagi. M.: Lesnaya promishlennost, 1986, 7 – 14, 20 p. 16. http://vseprosto.com/ Sellyuloza iz solomi zlakov i drugix odnoletnix rasteniy. 17. Bryanseva Z.YE. Atlas ultrastrukturi drevesnix polufabrikatov, primenyayemix dlya proizvodstva bumagi. M.: Lesnaya promishlennost, 1984. 232 p. 18. Alashkevich Y.D. Osnovi teorii gidrodinamicheskoy obrabotki voloknistix materialov v razmolnix mashinax: diss….dokt.texn.nauk. L., 1980. 334 p. 19. Kutovaya L.V. Kompleksniy parametr protsessa obrabotki voloknistix suspenziy beznojevim sposobom v ustanovke tipa «struya-pregrada»: diss….kand.texn.nauk. Krasnoyarsk. 1998. 150 s. 20. Mirzayeva M.B., Babaxanova X.A. Vliyaniye protsessa razmola bumajnoy massi na mexanicheskuyu prochnost bumag// Problemi tekstilY. – Tashkent, 2012. – №2, – S. 52-54. |