Izidingo zekhwalithi yefayibha yokukhiqiza i-fiberboard ngokuvamile zinqunywa ngokuya ngesigaba somkhiqizo, inqubo yokukhiqiza kanye nesimo semishini.Mayelana nekhwalithi yefayibha, imicu ehlukanisiwe idingeka ukuthi ibe nendawo ethile ethile kanye nezakhiwo ezinhle zokuluka, futhi idinga isici esithize se-aspect ratio, inani lesisefo, ne-fiber drainage, ukungena komoya, izingxenye zamakhemikhali, kanye ne-fiber polymerization.Kunezidingo eziqinile.Njengokukhiqizwa okumanzi, ohlelweni lokwakhiwa kwe-slab nokucindezela okushisayo, i-fiber slab iyadingeka ukuze ibe nomsebenzi wokukhipha amanzi ngokushesha nokulula.Ukukhiqizwa okomile akudingi nje ukuthungathwa okufanelekile kwemicu, kodwa futhi nokungena komoya okuhle kwe-slab.Uma kungenjalo, ama-slabs akhiwe wezindlela ezimbili zokukhiqiza azobhubhisa ukwakheka kwama-slabs futhi athinte ikhwalithi yangaphakathi yemikhiqizo ngesikhathi sokuthutha nokucindezela okushisayo.Kodwa-ke, lapho ukhiqiza i-low-density noma i-fiberboard ethambile, i-fibre ingase ingacindezelwa ngaphambili noma icindezelwe kancane ukuze yomiswe ebhodini ngemva kokwenza i-slab.Izinga le-brooming likhulisa i-interweaving kanye nendawo yokuxhumana phakathi kwemicu ngokwayo.
(1) Ubudlelwano phakathi kwe-fiber morphology nekhwalithi yomkhiqizo
Ngokuphathelene nokuma okungokwemvelo kwefayibha, kunomehluko omkhulu phakathi kwezinto zokusetshenziswa ezihlukene.Isibonelo, ubude obujwayelekile be-fiber tracheids yezinkuni ze-coniferous buyi-2-3 mm, futhi isilinganiso se-aspect ratio singama-63-110;isilinganiso sobude be-fiber tracheids nemicu yokhuni eqinile yokhuni olunamaqabunga abanzi buyi-0.8-1.3 mm, kanye ne-aspect ratio ngu-35-110 58;ngokuqondene nezinto zokusetshenziswa zefiber yotshani, ubude obujwayelekile be-fiber tracheids bungu-0.8-2.2 mm kuphela, i-aspect ratio ingu-30-130, kanti okuqukethwe kwamaseli angewona ama-fiber kuphakeme kakhulu.
Ngokombono we-fiber ubude ne-aspect ratio, kubonakala sengathi i-fiberboard eyenziwe ngemicu ye-softwood ingcono.Kodwa-ke, kufakazelwe ukuthi ukusebenza kwe-fiberboard ecindezelwe yizo zonke izinto ze-coniferous akuyona into engcono kakhulu.Lokhu kungenxa yokuthi ubukhulu be-fiber tracheids yezinto ze-coniferous buyi-tubular, futhi ubukhulu bodonga lwamaseli bukhulu kakhulu kunobubanzi bemicu.Ingqikithi yendawo yokuxhumana iba ncane.Ngokuphambene nalokho, ama-fiber tracheid, izintambo zokhuni eziqinile, namapayipi okhuni anamahlamvu abanzi anezindonga ezincane futhi amise okwebhande, ukuze indawo yokuxhumana phakathi kwemicu ibe nkulu, futhi impahla yokuluka inhle.Umkhiqizo we-Fibreboard onokuminyana okuphezulu namandla.
Amandla emvelo efayibha ngokwayo nawo anethonya elithile emandleni omkhiqizo we-fiberboard.Othile wake wasebenzisa indlela yokudaya ukuze aphumelele ukuhlolwa kokwehluleka ukugoba nokuqinile kwe-fiberboard eqinile, futhi wabheka ngaphansi kwesibonakhulu, kwabonakala ukuthi u-60% kuya ku-70% wemicu eyodwa yonakele.Kusukela esiphethweni sokuhlolwa, kukholakala ukuthi amandla emvelo e-monomer fibre ngokwawo cishe awanawo umthelela emandleni ebhodi elithambile le-fiberboard elinobukhulu obungu-0.25-0.4g/cm3.Inomphumela osobala kakhulu emandleni e-fiberboard e-medium density enomthamo we-0.4-0.8g/cm3.Izoba nomthelela omkhulu emandleni amabhodi e-fiberboard anokuminyana okukhulu kuno-0.9g/cm3.Lokhu kungenxa yokuthi amandla emvelo efayibha eyodwa ngokwayo ahlobene nobude obumaphakathi beketango le-cellulose (okungukuthi, izinga le-polymerization), futhi ubude bokuphuka kwefayibha eyodwa bungafinyelela ku-40000Pm.Ngemuva kokuthi izintambo zivuliwe futhi zenziwe zibe ama-slabs, ukuhlelwa okungajwayelekile kusesimweni sokuhlakazeka nokungajwayelekile.Ngemva kokuqeda umthelela wezinye izici, kucatshangelwa ukuthi ubude obujwayelekile bokuphuka kwefayibha eyodwa buyi-20 000 Pm, bese kubalwa ngokwenani elilondolozayo elingu-40%, i-fiber eyodwa Ubude bokuphuka bungafinyelela ku-8 000 Pm.Kungabonakala ukuthi ubudlelwano phakathi kwamandla emvelo efayibha ngokwayo namandla omkhiqizo we-fiberboard.
(2) Ubudlelwano phakathi kwezinga lokuhlukaniswa kwefayibha kanye nekhwalithi ye-fiberboard
Izinga lokuhlukaniswa kwefayibha libhekisela ezingeni lokuhlukaniswa kwefayibha ngemva kokuwohloka, okuyingxenye ebonisa ngokungaqondile ikhwalithi yemicu.Uma ukuhlukaniswa kwefayibha kucolekile, kuba nkulu indawo ethile engaphezulu yefayibha, futhi kuba mpofu kakhulu ukugeleza kwamanzi kanye nokungena komoya kwefayibha.Ngokuphambene, kungcono ukuhluzwa kwamanzi kanye nokungena komoya kwefayibha, kodwa ifayibha ngalesi sikhathi ivamise ukushuba futhi indawo ethile yefiber incane ngokuhambisanayo.Ngemuva kokuhlukaniswa kwe-fiber, indawo ethize ye-fiber ilingana ngokuphambene nokugeleza kwamanzi.Uma indawo ethize iba nkulu, kuba nemicu emincane kakhulu, futhi kuba kubi kakhulu ukugeleza kwamanzi kwefayibha.Idigri yokuhlukanisa i-fiber empofu I-coarse fiber (28~48 mesh) inokumelana komoya okuncane, kuyilapho idigri ephezulu yokuhlukanisa i-fiber kanye ne-fiber enhle inendawo enkulu ethile (100 ~ 200 mesh), ukungena komoya okungekuhle kwefayibha, ukugcwaliswa kwe-slab okuhle, kodwa umoya omkhulu. ukumelana.Ubukhulu bendawo ethile yefiber, ivolumu yefiber ibe mncane, futhi ngokuphambene nalokho.Ngakho-ke kungatholakala ukuthi ukuhlungwa, ukungena komoya kanye nevolumu yefiber konke kunobudlelwane obuthile nezinga lokuhlukaniswa kwefayibha.Ngakho-ke, kungashiwo ukuthi izinga lokuhlukaniswa kwe-fiber liyinkomba ebalulekile yekhwalithi ye-fiber pulp, ethinta ngokuqondile inqubo yokukhiqiza i-fiber kanye nekhwalithi yomkhiqizo.Ukuzijwayeza kufakazele futhi ukuthi phakathi kwebanga elithile, ukuphakama kwezinga lokuhlukaniswa kwefayibha, okungukuthi, ukucoleka kwemicu, kuba ngcono ukuluka phakathi kwemicu ye-slab, namandla, ukumelana namanzi kanye nokuminyana komkhiqizo we-fiberboard kuzoba ngcono. futhi anda ngokufanele.
Ngaphezu kwalokho, kuphetha ngokuhlangenwe nakho okungokoqobo ukuthi izinga lokuhlukaniswa kwefayibha kufanele lilawulwe phakathi kwebanga elithile ngesisekelo sokusimamisa ikhwalithi yomkhiqizo ngokwezinhlobo ezahlukene zemikhiqizo nezici zenqubo.
(3) Ubudlelwano phakathi kwevelu yokuhlolwa kwefayibha kanye nekhwalithi ye-fiberboard
Umumo wefayibha, ubude befayibha, kanye nesilinganiso sogqinsi lwefayibha yezinhlobo ezahlukene zezinto zokusetshenziswa kwefayibha kuzoba namazinga ahlukahlukene omthelela kukhwalithi ye-fiberboard.Indlela yokuhlola ikhwalithi yefayibha ngokuvamile ukusebenzisa ukuhlukaniswa kwefayibha (fiber freeness DS kanye ne-fiber percussion degree SR).Ngenxa yokuthi i-fiber ngokwayo ihluke kakhulu, kuvame ukuba nzima ukukhombisa ingqikithi yekhwalithi yefayibha ngokukala izinga lokuhlukaniswa kwemicu yodwa.Ngezinye izikhathi amanani okukhululeka emicu emibili ayafana ngokuyisisekelo, kodwa isilinganiso sobude nokujiya kwemicu kuhlukile.Ngakho-ke, yengezwa ngokuhlola inani le-fiber sieving ukuze kuhlaziywe ikhwalithi ye-fiber ehlukanisiwe.
Inani lokuhlola i-fiber libaluleke kakhulu ekukhiqizeni kwangempela.Ukulungisa inani lokuhlola i-fiber slurry kungathuthukisa ukwakheka kwefayibha kanye nezakhiwo eziludaka, ngaleyo ndlela kuthuthukise ikhwalithi yemikhiqizo ye-fiberboard.Ucwaningo ngomphumela wevelu yokuhlolwa kwefayibha kukhwalithi ye-fiberboard selunakwe isikhathi eside, futhi sekutholakele isisekelo sobuchwepheshe esijwayelekile.I-fiber morphology ithintwa ikakhulukazi uhlobo lwezinto ezibonakalayo kanye nendlela yokuhlukaniswa kwefayibha.Ukhuni lwe-coniferous lungcono kunomucu wokhuni onamaqabunga abanzi.Indlela yomshini wamakhemikhali ingcono kunendlela yokushisa yomshini (okungukuthi, indlela yokugaya okushisayo), futhi indlela ehlanzekile yomshini iphumelela kakhulu.mpofu.
I-Dongguan MUMUInkampani Woodworking Co., Ltd.ingumkhiqizi nomphakeli wezinto zokwakha zaseShayina ezimunca umsindo.NgiyacelaXhumana nathiukuze uthole ulwazi olwengeziwe!
Isikhathi sokuthumela: Jul-22-2023
