Iimfuno zomgangatho wefayibha zokwenziwa kwe-fiberboard zimiselwa ngokubanzi ngokodidi lwemveliso, inkqubo yokuvelisa kunye nemeko yezixhobo.Ngokubhekiselele kumgangatho wefayibha, iintsinga ezahluliweyo ziyafuneka ukuba zibenendawo ethile yomphezulu kunye neempawu ezilungileyo zokuluka, kwaye zifuna umlinganiso othile, ixabiso le-sieve, kunye ne-fiber drainage, ukungena emoyeni, amacandelo ekhemikhali, kunye ne-fiber polymerization.Kukho iimfuno ezingqongqo.Njengokuveliswa okumanzi, kwinkqubo yokwenza i-slab kunye noxinzelelo olushushu, i-fiber slab iyadingeka ukuba ibe nomsebenzi wokukhupha ngokukhawuleza kunye nokulula.Imveliso eyomileyo ayifuni kuphela i-interweaving efanelekileyo yeentsinga, kodwa kunye nokuhamba kakuhle komoya we-slab.Ngaphandle koko, ii-slabs ezenziwe ngeendlela ezimbini zokuvelisa ziya kutshabalalisa isakhiwo se-slabs kwaye zichaphazele umgangatho wangaphakathi weemveliso ngexesha lokuthutha kunye noxinzelelo olushushu.Nangona kunjalo, xa uvelisa i-low-density okanye i-fiberboard ethambileyo, i-fiber ayinakunyanzeliswa kwangaphambili okanye icinezelwe kancinci ukuze yomise ebhodini emva kokwenza i-slab.Iqondo lomtshayelo linyusa i-interweaving kunye nendawo yokunxibelelana phakathi kwemicu ngokwawo.
(1) Ubudlelwane phakathi kwe-fiber morphology kunye nomgangatho wemveliso
Ngokubhekiselele kubume bendalo befiber, kukho umahluko omkhulu phakathi kwemathiriyeli ekrwada eyahlukeneyo.Ngokomzekelo, ubude obuqhelekileyo be-fiber tracheids yokhuni lwe-coniferous yi-2-3 mm, kunye ne-aspect ratio yi-63-110;ubude obuqhelekileyo be-fiber tracheids kunye nemicu yokhuni eqinile yokhuni olunamaqabunga abanzi ngu-0.8-1.3 mm, kunye nomlinganiselo we-35-110 58;ngokubhekisele kwizinto eziluhlaza zefiber, ubude obuqhelekileyo be-fiber tracheids yi-0.8-2.2 mm kuphela, i-aspect ratio yi-30-130, kunye nomxholo weeseli ezingezo-fiber ziphezulu.
Ngokwembono yobude befayibha kunye ne-aspect ratio, kubonakala ngathi i-fiberboard eyenziwe nge-softwood fibers ingcono.Nangona kunjalo, kuye kwangqinwa ukuba ukusebenza kwe-fiberboard ecinezelwe zizo zonke izinto ze-coniferous ayisiyiyo eyona ilungileyo.Oku kungenxa yokuba ubukhulu be-fiber tracheids ye-coniferous materials yi-tubular, kwaye ubukhulu bodonga lweseli bukhulu kunobubanzi bemicu.Indawo yoqhagamshelwano iyonke iba yincinci.Ngokuchasene noko, i-fiber tracheids, i-fiber fibers, i-fiber fibers, kunye ne-conduits yokhuni olubanzi olunamaqabunga amancinci kunye ne-band-shaped, ukwenzela ukuba indawo yokudibanisa phakathi kwee-fibers inkulu, kunye nepropati ye-interweaving ilungile.Imveliso yeFibreboard enoxinano oluphezulu kunye namandla.
Amandla endalo efayibha ngokwawo anempembelelo ethile kumandla emveliso yefiberboard.Omnye umntu wakha wasebenzisa indlela yokudaya ukuphumelela ukugoba kunye novavanyo lokungaphumeleli kwe-fiberboard enzima, kwaye waqaphela phantsi kwe-microscope, kwabonwa ukuba i-60% ukuya kwi-70% yentsinga enye yonakele.Ukususela ekugqityweni kovavanyo, kukholelwa ukuba amandla endalo e-monomer fiber ngokwayo ayinayo impembelelo kumandla we-fiberboard ethambileyo enobuninzi be-0.25-0.4g / cm3.Inempembelelo ecacileyo ngakumbi kumandla we-fiberboard yoxinaniso oluphakathi kunye nobuninzi be-0.4-0.8g / cm3.Kuya kuba nefuthe elikhulu kumandla eebhodi ze-fiberboards ezinoxinaniso oluphezulu kune-0.9g / cm3.Oku kungenxa yokuba amandla endalo efayibha enye ngokwayo inxulumene nomndilili wobude bekhonkco leselulosi (oko kukuthi, iqondo lepolymerization), kunye nobude bokuqhawuka kwefiber enye bungafikelela kwi-40000Pm.Emva kokuba iifiber zihlanjululwe kwaye zenziwe zibe yi-slabs, ilungiselelo elingaqhelekanga likwimeko yokusabalalisa kunye nokungaqhelekanga.Emva kokuphelisa impembelelo yezinye izinto, kucingwa ukuba umyinge wokuqhawula ubude be-fiber enye yi-20 000 Pm, kwaye emva koko ibalwe ngokwenani elilondolozayo le-40%, i-fiber enye Ubude be-fracture bunokufikelela kwi-8 000 Pm.Inokubonwa ukuba ubudlelwane phakathi kwamandla endalo efayibha ngokwayo kunye namandla emveliso ye-fiberboard.
(2) Ubudlelwane phakathi kweqondo lokuhlukana kwefayibha kunye nomgangatho we-fiberboard
Iqondo lokwahlulwa kwefayibha libhekisa kwiqondo lokwahlulwa kwefiber emva kokuchaneka, nto leyo ebonisa ngokungangqalanga umgangatho wemicu.Okukhona ulwahlulo lwefayibha lucoleka, kokukhona usiba mkhulu indawo ethile yomphezulu wefayibha, kwaye kokukhona uhlwempuzekile umjelo wamanzi kunye nokugqobhoza komoya kwefiber.Ngokuchasene noko, ngcono ukuhluzwa kwamanzi kunye nokungena komoya kwefayibha, kodwa ifayibha ngeli xesha ihlala ijiyile kwaye indawo ethile yomphezulu wefiber incinci ngokuhambelanayo.Emva kokuhlukana kwefayibha, indawo ethile yendawo yefiber ihambelana ngokungafaniyo nokuhamba kwamanzi.Ubukhulu bendawo ethile yomphezulu, kokukhona imicu ecolekileyo ingaphezulu, kwaye kokukhona ukutsalwa kwamanzi kumbi kakhulu.Idigri yokwahlula ifayibha embi (28 ~ 48 mesh) inokumelana komoya omncinci, ngelixa idigri ephezulu yokwahlula ifayibha kunye nefiber entle inommandla omkhulu ongaphezulu (i-100 ~ 200 mesh), ukungenwa komoya kakubi kwefayibha, ukuzaliswa kakuhle kwe-slab, kodwa umoya omkhulu. ukuxhathisa.Inkulu indawo ethile yendawo yefiber, encinci umthamo wefiber, kwaye ngokuphambeneyo.Ngaloo ndlela kunokufunyaniswa ukuba ukuhluzwa, ukufikeleleka komoya kunye nomthamo wefiber zonke zinobudlelwane obuthile kunye neqondo lokuhlukana kwefayibha.Ngoko ke, kunokuthiwa iqondo lokuhlukana kwefayibha luphawu olubalulekileyo lomgangatho wefiber pulp, echaphazela ngokuthe ngqo inkqubo yokuvelisa ifayibha kunye nomgangatho wemveliso.Ukuziqhelanisa nako kubonakalise ukuba kuluhlu oluthile, kokukhona iqondo eliphezulu lokwahlulwa kwefayibha, oko kukuthi, kokukhona imicu icolekileyo, kokukhona uthungelwano phakathi kwemicu ye-slab, kunye namandla, ukuxhathisa kwamanzi kunye nokuxinana kwemveliso ye-fiberboard iya kuthi. ukwandise ngokufanelekileyo.
Ukongezelela, kugqitywa ngamava asebenzayo ukuba iqondo lokuhlukana kwefayibha kufuneka lilawulwe ngaphakathi koluhlu oluthile ngesiseko sokuzinzisa umgangatho wemveliso ngokweentlobo ezahlukeneyo zeemveliso kunye neempawu zenkqubo.
(3) Ubudlelwane phakathi kwexabiso lokuhlola ifayibha kunye nomgangatho we-fiberboard
Ubume befiber, ubude befayibha, kunye nomlinganiselo wefayibha ubukhulu beentlobo ezahlukeneyo zefiber ekrwada ziya kuba neempembelelo ezahlukeneyo kumgangatho wefiberboard.Indlela yokuvavanya umgangatho wefayibha iqhele ukusebenzisa ukwahlula ifayibha (fiber freeness DS kunye nefiber percussion degree SR).Ngenxa yokuba ifayibha ngokwayo yahluke kakhulu, kudla ngokuba nzima ukubonakalisa undoqo womgangatho wefayibha ngokulinganisa iqondo lokwahlulwa kweentsinga zodwa.Ngamanye amaxesha amaxabiso akhululekileyo eentsinga ezimbini zifana ngokusisiseko, kodwa ubude kunye nobukhulu bomlinganiselo weefayili ziyahluka.Ngoko ke, yongezwa ngokuvavanya ixabiso le-fiber sieving ukuhlalutya umgangatho wefayibha ehlukeneyo.
Ixabiso lokuhlola ifayibha libaluleke kakhulu kwimveliso yokwenyani.Ukulungelelanisa ixabiso le-fiber slurry screening lingaphucula imilo yefiber kunye nepropathi ye-slurry, ngaloo ndlela iphucula umgangatho weemveliso ze-fiberboard.Uphando malunga nefuthe lexabiso lokuhlola ifayibha kumgangatho we-fiberboard sele linikwe ingqwalasela, kwaye isiseko sobugcisa esiqhelekileyo sifunyenwe.I-fiber morphology ichaphazeleka kakhulu luhlobo lwezinto kunye nendlela yokwahlula ifayibha.I-coniferous wood ingcono kune-fiber yomthi enamagqabi abanzi.Indlela ye-chemical mechanical ingcono kunendlela yokufudumeza (oko kukuthi, indlela yokugaya i-thermal), kwaye indlela ecocekileyo yomatshini iyasebenza ngakumbi.ihlwempu.
Dongguan MUMUI-Woodworking Co., Ltd.ngumvelisi wezinto zokwakha ofunxa isandi kunye nomthengisi.NdiyacelaQhagamshelana nathingolwazi oluthe kratya!
Ixesha lokuposa: Jul-22-2023
