Ngophuhliso olukhawulezayo loqoqosho lwelizwe lam kunye nokuphuculwa kwemigangatho yokuphila kwabahlali basezidolophini nasezilalini, iye yaba yindlela ethandwayo yokusetyenziswa ukwenza umhombiso wangaphakathi obanzi kunye nokuhlaziywa kwefenitshala.Nangona kunjalo, iipaneli ezisekelwe kwimithi zisetyenziswa ngokubanzi njengezinto ezisisiseko kumhlobiso wangaphakathi kunye namashishini efenitshala, ngoko kukho ingxaki yokungcola kwe-formaldehyde.Ngaphambili, ingeniso yezoqoqosho yabantu yayiphantsi, ubuninzi bomhlobiso wangaphakathi wenziwa ngokuyinxenye, kwaye ifenitshala yayihlala ihlaziywa ngexabiso elincinci, ngoko ungcoliseko lwe-formaldehyde aluzange luvelele kwaye lunokunyamezela.
Kule mihla, iphantse ixhaphake into yokuba abo bafudukela kwikhaya elitsha benze ulungiso olubanzi kunye nohlaziyo lwefanitshala.Ngale ndlela, ukuqokelela kwe-formaldehyde volatilization kwanda kakhulu, ukufikelela kwinqanaba elinganyamezelekiyo, kubeka engozini ngokuthe ngqo indawo yokuhlala yabasebenzisi.Ngenxa yesi sizathu, ingxabano phakathi kwesebe lokuhlobisa kunye nomsebenzisi ibe yingxaki yentlalontle, kwaye izinto ezibonakalayo zokuhlobisa okanye ifenitshala zivela kwiimarike, kwaye akukho ndlela yokuyicombulula.Ngokuphuculwa kokuqwashisa ngokukhuselwa kokusingqongileyo kwihlabathi lonke, ungcoliseko olubangelwa yigesi ye-formaldehyde lufikelele kwinqanaba ekufuneka liqwalaselwe.Ngesi sizathu, umsebenzi wezenzululwazi kunye nobuchwepheshe usebenze imilinganiselo emininzi kwaye uzama ukusombulula.Njengokuphucula ifomula efanelekileyo ye-urea kunye ne-formaldehyde, okanye nokusebenzisa i-formaldehyde scavengers, njl., kodwa ayisisisombululo esinamandla.Ukongezelela, izinto zokupakisha zezinto ezithile, ezifana nokutya, iti, i-cigarettes, njl., azivumeli ubukho be-formaldehyde.Ngaphambili, iinkuni zendalo zazisetyenziswa kakhulu.Ngenxa yokuphunyezwa komgaqo-nkqubo kazwelonke wokukhusela imithombo yamahlathi, ukusetyenziswa kwezinto zokupakisha iinkuni kuthintelwe.Xa ukhangele ezinye izinto, iipaneli ezisekelwe ngamaplanga zikhethwa kuqala.Nangona kunjalo, kunzima ukuyiqonda ngenxa yongcoliseko lwe-formaldehyde.Konke oku kwenza imfuno yongcoliseko-free "iiphaneli eziluhlaza ezisekelwe ngamaplanga" kwi-ajenda.Umthombo wokukhutshwa kwegesi ye-formaldehyde yi-adhesive esetyenziselwa ukuveliswa kweepaneli ezisekelwe kwimithi - i-urea-formaldehyde resin.Inzuzo enkulu yolu hlobo lokuncamathelisa kukuba umthombo wezinto eziluhlaza ubuninzi, ukusebenza kakuhle, ixabiso liphantsi, kwaye akukho nto ithatha indawo okwangoku.Nangona kunjalo, i-urea-formaldehyde resin ilinganiselwe yinkqubo yokudibanisa.Kungakhathaliseki ukuba i-formula iphuculwe njani, i-chemical reaction ayikwazi ukugqibelela.Ngexesha lokwenziwa kunye nokusetyenziswa kwemveliso, kuhlala kukho ingxaki ye-formaldehyde engaphezulu ekhutshwe kwaye iphendule, kuphela isixa.Ukuba inkqubo yokudibanisa ibuyele ngasemva, igesi engaphezulu ye-formaldehyde iya kukhutshwa.Phakathi kwamashishini amaninzi eepaneli ezenziwe ngomthi kwilizwe lethu, iteknoloji yokwenziwa kwe-urea-formaldehyde resin iphelelwe lixesha, ngoko akumangalisi ukuba iipaneli ezisekelwe kwiplanga ezingena kwimarike zibangela ukungcola okukhulu.Akukho ntlobo zeglue ze-formaldehyde-free, kodwa mhlawumbi umthombo weglue unqabile okanye ixabiso liyabiza.Ngokutsho kwemveliso yangoku yeepaneli ezisekelwe kwimithi kwilizwe lam, ukusetyenziswa kwe-adhesive liquid ngonyaka malunga neetoni ezi-3 zezigidi, okunzima ukuhlangabezana nazo.Kwaye eyona resin yokwenziwa ngexabiso eliphantsi kumaxesha angoku yiglue ye-urea kuphela.
Kunzima ukulungelelanisa ukuchasana phakathi kokunciphisa ukungcola, iindleko kunye nomthombo weglue kwixesha elizayo elikufutshane.Ngoko ke, abaphengululi basekhaya nakwamanye amazwe bahlola enye indlela, oko kukuthi, ukuvelisa iipaneli ezenziwe ngamaplanga kunye nenkqubo yeglue.Ngaphezulu kweminyaka engama-30 eyadlulayo, iSoviet Union kunye neRiphabhliki yaseCzech zagqiba uphononongo lokwenzeka kwethiyori kunye netekhnoloji, kwaye iRiphabhliki yaseCzech nayo yenze imveliso encinci.Andazi kwakutheni ukuze ndingaqhubeki ndiyifunda?Mhlawumbi esona sizathu siphambili kukuba ubunzulu bongcoliseko abuzange butsale ingqalelo kuluntu ngelo xesha, kwaye amandla okuqhuba imfuno alahlekile, ngoko ke kwakungathandi ukuqhubeka nokuphucula inkqubo yemveliso.
Ngoku ukuqaphela ukukhuselwa kwendalo kuye kwafikelela kwindawo ephakamileyo engazange ibonwe ngaphambili, kwaye kwangaxeshanye, ekusebenzeni, abasebenzisi ngokwenene abakwazi ukunyamezela.Ngaphandle koko, iJapan ayinakuvelisa i-formaldehyde scavenger.Ke ngoko, abaphengululi basekhaya nakwamanye amazwe baye banikela ingqalelo engakumbi kuphando lwesi sihloko, bamkela iindlela ezahlukeneyo zobugcisa, kwaye bafumana iziphumo ezithile ngokulandelelanayo.Nangona kunjalo, akukho namnye kubo oye wenza imveliso enkulu ukwenza iimveliso zingene kwimarike.Ukuphuhliswa kweepaneli ze-glue-free-wood-based panels yeyona ndlela isebenzayo yokusombulula ukungcoliseka kwendalo, kwaye ikwayindlela yokuphuhlisa.Okwangoku, kukho ukhuphiswano phakathi kobuchule obutsha kunye nexesha, nabani na oneyona teknoloji iphambili, ilula kwaye ilula kakhulu ukukhuthaza itekhnoloji iya kuba ngowokuqala ukwenza imveliso kwaye ithathe indawo yentengiso.
Ngokutsho kwe-gluing theory yokuba i-fibers yezityalo iyakwazi ukuzimela, eye yaqinisekiswa ngabangaphambili, ngovavanyo oluphindaphindiweyo kunye nokuphucula okuqhubekayo, ukuphumelela kuye kwenziwa kwinkqubo yokwenza i-fiberboard engekho iglue.Isitshixo sokunqoba kukuphucula ukusebenza kwebhodi ye-non-glue kunye nokwenza lula iinkqubo zokusebenza Iyakwazi ukusebenzisa umgca wokuvelisa i-medium density fiberboard ukuvelisa i-fiberboard engenaglu ngaphandle kokwenza naluphi na utshintsho kuzo zonke izixhobo zokuvelisa (kuphela isixhobo sokwenza iglue. ayisebenzi).Amandla omatshini wemveliso alingana okanye angaphezulu kwe-particleboard eqhelekileyo, kwaye ukusebenza kwamanzi kufana ne-urea fiberboard.
Kuba amanzi esetyenziswa njenge "adhesive", amandla ancamathelayo phakathi kweentsinga agqityezelwe ngexesha lenkqubo yokucinezela eshushu, ngoko ke ukufuma kwe-slab kuphezulu kunoko kwe-siling slab, kwaye umjikelo wokucinezela kufuneka kwandiswe. ukuqinisekisa ukuba ukusabela kweekhemikhali kugqitywe ngokupheleleyo, ngaloo ndlela kuchaphazela imveliso yokuqala, kodwa akunampembelelo ekusebenzeni kwezoqoqosho.
1. Ukugcina iindleko zokubambelela kuyinzuzo ngqo kwaye kwandisa inzuzo eseleyo.
2. Imveliso ayinamaleko aqinisiweyo, i-sanding encinci, ukusetyenziswa kwamandla angaphantsi, kunye nokusetyenziswa kwamandla aphantsi kunye neendleko zebhanti ezinqabileyo.
3. Uninzi lwamanzi kwi-slab ludluliselwa kumshicileli ukuba lube ngumphunga, ukwenzela ukuba inxalenye ye-convective heat transfer in dryer iguqulelwe kwi-contact transfer heat, ukusebenza kakuhle kwe-thermal kuphuculwe, kwaye ukusetyenziswa kwamalahle kuyancitshiswa.Ezi zizibonelelo ezongezelelweyo.
Kwezi zinto zintathu zodwa, nokuba imveliso yonyaka iyancipha ukusuka kwi-30,000 m3 ukuya kwi-15,000 ukuya kwi-20,000 m3, isenokwenza inzuzo ye-3.3 yezigidi ukuya kwi-4.4 yezigidi ze-yuan ngonyaka (kuxhomekeke kwindleko yeglue).Ngaphezu koko, emva kokuba isiphumo sincitshisiwe, izinto ezisetyenziswa ekrwada kunye nokusetyenziswa kwamandla nazo ziyancitshiswa nge-30% ukuya kwi-50%, ilahleko yezixhobo kunye neendleko zokuzigcina zincitshisiwe, kunye nenkunzi esebenzayo iyonke ehlalayo nayo iyancitshiswa.Le yinzuzo engathanga ngqo eyenziwe.Ngoko ke, inzuzo epheleleyo ayikho ngaphantsi kwemveliso yokuqala, okanye nangaphezulu.Kwakhona kulula kakhulu ukugcina imveliso yokuqala, ngenxa yokuba umthamo wemveliso yenkqubo nganye yezixhobo zenkqubo phambi kokuba umshicileli oshushu ungatshintshi, ngoko kunokwenziwa ngokudibanisa umshicileli oshushu kunye nendlela yokuthutha, okanye ukutshintsha inani leengqimba ze cinezela eshushu .Lo mrhumo wokuhlaziya uyimfuneko.
Inzuzo enkulu ye-fiberboard engenaglue kukupheliswa ngokupheleleyo kwemithombo yongcoliseko kunye neendleko eziphantsi, kwaye ukusetyenziswa kwayo kunokwandiswa kwizinto zokupakisha zezinto ezithile ezingavumeli ungcoliseko.Isiphene sendalo se-fiberboard engena-glue: incamatheliswa ngamandla ancamathelayo enziwa sisenzo sekhemikhali samanzi kunye neemolekyuli zefayibha.Iifibers kufuneka zibe noqhagamshelwano olusondeleyo, ngaphandle koko ukubambelela kuya kuncitshiswa, ngoko ke ubuninzi buphezulu kunobuqhelekileyo be-MDF.Esi siphene asibonakali ukuba amashiti abhityileyo aveliswa.
DongguanI-MUMU Woodworking Co., Ltd.ngumvelisi wezinto zokwakha ofunxa isandi kunye nomthengisi.NdiyacelaQhagamshelana nathingolwazi oluthe kratya!
Ixesha lokuposa: Jul-31-2023
