Isano iri hagati yubwiza bwa fibre nibikoresho bya fibre

 

 

(1) Isano iri hagati ya fibre morphologie nubwiza bwibicuruzwa

 

Kubireba imiterere yihariye ya fibre, hariho itandukaniro rikomeye hagati yibikoresho bitandukanye.Kurugero, impuzandengo yuburebure bwa fibre tracheide yibiti byimeza ni mm 2-3, naho igipimo ni 63-110;impuzandengo yuburebure bwa fibre tracheide hamwe nibiti bikomeye byibiti byamababi yagutse ni 0.8-1.3 mm, naho igipimo ni 35-110 58;naho ibyatsi bya fibre fibre mbisi, impuzandengo ya fibre tracheide ni mm 0.8-2.2 mm gusa, igipimo cyerekezo ni 30-130, naho ibiri muri selile idafite fibre ni byinshi.

 

Urebye uburebure bwa fibre hamwe nu kigereranyo cya aspect, birasa nkaho fibre ikozwe mumashanyarazi yoroshye.Ariko, byaragaragaye ko imikorere ya fibre ikanda nibikoresho byose bifatika ntabwo byanze bikunze ari byiza.Ni ukubera ko ubunini bwa fibre tracheide yibikoresho bya conifile ari tubular, kandi ubunini bwurukuta rwakagari ni bunini kuruta ubugari bwa fibre.Igice cyose cyo guhuza kibaye gito.Ibinyuranye na byo, fibre tracheide, fibre ikomeye yibiti, hamwe numuyoboro wibiti byamababi yagutse ni uruzitiro ruto kandi rufite uruzitiro, ku buryo ahantu ho guhurira hagati ya fibre ari nini, kandi umutungo uhuza ni mwiza.Ibicuruzwa bya Fibreboard bifite ubucucike bwinshi nimbaraga.

 

Imbaraga zisanzwe za fibre ubwazo nazo zigira uruhare runini ku mbaraga z'ibicuruzwa bya fibre.Umuntu yigeze gukoresha uburyo bwo gusiga irangi kugirango atsinde ibizamini byo kunanirwa no kunanirwa kwa fibre ikomeye, hanyuma akareba munsi ya microscope, byagaragaye ko 60% kugeza 70% bya fibre imwe yangiritse.Kuva ikizamini kirangiye, abantu bemeza ko imbaraga za fibre ya monomer ubwayo ntaho ihuriye nimbaraga za fibre yoroshye ifite ubucucike bwa 0.25-0.4g / cm3.Ifite ingaruka zigaragara cyane ku mbaraga za fibre yububiko buciriritse hamwe n'ubucucike bwa 0.4-0.8g / cm3.Bizagira ingaruka zikomeye kumbaraga za fibre-fibre nyinshi zifite ubucucike burenze 0.9g / cm3.Ni ukubera ko imbaraga zisanzwe za fibre imwe ubwayo ifitanye isano nuburebure buringaniye bwurunigi rwa selile (ni ukuvuga urwego rwa polymerisation), kandi uburebure bwa fibre imwe burashobora kugera kuri 40000Pm.Nyuma ya fibre imaze gushyirwaho kaburimbo hanyuma igashyirwaho ibisate, gahunda idasanzwe iri muburyo bwo gutatana kandi bidasanzwe.Nyuma yo gukuraho ingaruka zizindi mpamvu, ukeka ko impuzandengo yo kumeneka ya fibre imwe ari 20 000 Pm, hanyuma ukabarwa ukurikije umubare w’ibidukikije wa 40%, fibre imwe Uburebure bwavunitse bushobora kugera kuri 8 000 Pm.Birashobora kugaragara ko isano iri hagati yimbaraga zisanzwe za fibre ubwayo nimbaraga zibicuruzwa bya fibre.

 

(2) Isano iri hagati yurwego rwo gutandukanya fibre nubwiza bwa fibre

 

Urwego rwo gutandukanya fibre rwerekana urwego rwo gutandukanya fibre nyuma ya defibration, nikintu kigaragaza muburyo butaziguye ubwiza bwa fibre.Nibyiza gutandukanya fibre, nini nini yubuso bwihariye bwa fibre, kandi amazi mabi hamwe nubushobozi bwimyuka ya fibre.Ku rundi ruhande, ibyiza byo kuyungurura amazi no guhumeka neza kwa fibre, ariko fibre muriki gihe usanga iba ndende kandi ubuso bwihariye bwa fibre ni nto.Nyuma yo gutandukana kwa fibre, ubuso bwihariye bwa fibre buringaniye muburyo bwo kuvoma amazi.Nubuso bunini bwubuso bwihariye, niko fibre nziza nini, kandi namazi meza ya fibre.Impamyabumenyi idahwitse ya fibre Coarse fibre (28 ~ 48 mesh) ifite imbaraga zo kurwanya ikirere gito, mugihe urwego rwo hejuru rwo gutandukanya fibre hamwe na fibre nziza ifite ubuso bunini bwihariye (100 ~ 200 mesh), umwuka mubi wa fibre, kwuzuza icyapa cyiza, ariko umwuka munini kurwanywa.Ninini yubuso bwihariye bwa fibre, nubunini bwa fibre, naho ubundi.Rero, dushobora kwemeza ko kuyungurura, guhumeka ikirere hamwe nubunini bwa fibre byose bifitanye isano runaka nurwego rwo gutandukanya fibre.Kubwibyo, dushobora kuvuga ko urugero rwo gutandukanya fibre ari ikimenyetso cyingenzi cyerekana ubwiza bwa fibre pulp, bigira ingaruka ku buryo butaziguye ku musaruro wa fibre no ku bwiza bw’ibicuruzwa.Imyitozo yanagaragaje ko murwego runaka, urwego rwo hejuru rwo gutandukanya fibre, ni ukuvuga, fibre nziza, niko guhuza intera hagati ya fibre yicyapa, nimbaraga, kurwanya amazi nubucucike bwibicuruzwa bya fibre bizaba na none kwiyongera.

 

Byongeye kandi, hanzuwe kuburambe bufatika ko urugero rwo gutandukanya fibre rugomba kugenzurwa murwego runaka hashingiwe ku guhuza ubwiza bwibicuruzwa ukurikije ubwoko butandukanye bwibicuruzwa nibiranga inzira.

 

(3) Isano iri hagati ya fibre yerekana agaciro nubwiza bwa fibre

 

Imiterere ya fibre, uburebure bwa fibre, nuburinganire bwa fibre yubwoko butandukanye bwibikoresho fatizo bya fibre bizagira ingaruka zitandukanye kumiterere ya fibre.Uburyo bwo gupima ubuziranenge bwa fibre mubisanzwe ni ugukoresha fibre itandukanye (fibre freeness DS na fibre percussion degree SR).Kuberako fibre ubwayo itandukanye cyane, akenshi biragoye kwerekana ishingiro ryubwiza bwa fibre mugupima urugero rwo gutandukanya fibre yonyine.Rimwe na rimwe, indangagaciro zubusa za fibre zombi zirasa cyane, ariko uburebure nubunini bwikigereranyo cya fibre biratandukanye.Kubwibyo, hiyongeraho mugupima fibre yogusuzuma agaciro kugirango isesengure ubwiza bwa fibre yatandukanijwe.

 

Kugenzura fibre bifite akamaro kanini mubikorwa nyabyo.Guhindura fibre slurry igenzura agaciro birashobora kunoza imiterere ya fibre hamwe nuburyo bworoshye, bityo bikazamura ubwiza bwibicuruzwa bya fibre.Ubushakashatsi ku ngaruka zo gusuzuma fibre ku bwiza bwa fibre kuva kera byitabweho, kandi habonetse tekiniki isanzwe.Imiterere ya fibre yibasiwe cyane nubwoko bwibintu nuburyo bwo gutandukanya fibre.Ibiti byimeza biruta fibre-amababi yagutse.Uburyo bwa mashini yimiti iruta uburyo bwo gushyushya imashini (ni ukuvuga uburyo bwo gusya amashyuza), kandi uburyo bwubukanishi bwera burakora neza.abakene.

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