Hardboard Thiab Fiberboard: Nws Yog Dab Tsi Thiab Qhov Sib Txawv Yog Dab Tsi? Qhov Sib Txawv Ntawm Kev Tsim Khoom Yog Dab Tsi? Cov Yam Ntxwv Sib Txawv

2024 Tus sau: Beatrice Philips | [email protected]. Kawg hloov kho: 2024-01-18 12:13

Cov lus nug ntawm qhov sib txawv ntawm hardboard thiab fiberboard tuaj yeem hnov ntau zaus. Qhov tseeb, qhov sib txawv ntawm lawv dag tsuas yog qee qhov ntawm cov yam ntxwv ntawm kev tsim khoom, uas ua rau lawv cov thwj cim ntawm cov yam ntxwv ntawm cov khoom no. Tab sis qhov no tsis tiv thaiv ob qho tib si hardboard thiab fiberboard los ntawm cov khoom nrov nrov rau kev kho kom zoo nkauj sab hauv, thaum mus muag hauv lwm lub npe txawv.

Nws yog dab tsi?

Fiberboard (Fibreboard) yog tsim los ntawm cov khoom pov tseg, muag muag thiab coj mus rau lub xeev sib xws . Cov khoom siv no muaj ntau yam sib txawv, sib txawv hauv lub zog, tawv thiab hom sab nrauv sab nrauv. Txhua cov ntaub ntawv hauv pab pawg no tau tsim tawm raws li GOST 4598-86 , nias rau hauv cov ntawv nrog tuab ntawm 2 txog 15 mm (qee hom mus txog 40 mm rau qhov ntsuas no). Nyias ntau yam qhia qhov yooj yooj yim, tsim nyog rau sheathing nkhaus qauv.

Cov ntaub ntawv nyoos rau kev tsim cov fiberboard tau txais los ntawm cov ntoo ua pov tseg. Qhov no suav nrog cov ntoo ntoo, hluav taws, sawdust, ntxuav kom huv thiab qhuav, thiab tom qab ntawd tsoo rau cov fibers. Qib ntawm kev sib tsoo nyob ntawm cov yam ntxwv ntawm cov nplais yav tom ntej. Yav tom ntej, lub hauv paus ntoo tau sib xyaw nrog lwm cov khoom siv:

• cov roj hmab khi;
• cov tshuaj tiv thaiv dej kom ua rau muaj kev tiv thaiv ya raws;
• antiseptics los tiv thaiv rotting;
• hluav taws kub nyhiab (rau cov khoom ntawm chav kawm tiv taus hluav taws).

Cov txheej txheem ntawm kev tsim cov phaj los ntawm cov khoom siv raw tau ua nyob rau hauv siab ntawm 3-5 MPa nrog cua sov txog li +300 degrees Celsius. Hardboard yog cov khoom siv uas tsis muaj chav kawm cais, vim nws tau suav nrog hauv cov npe ntawm cov khoom siv fiberboard . Qhov txawv yog feem ntau hauv qhov nyuaj ntawm cov ntawv txheeb thiab lawv tus yam ntxwv, nrog rau hauv cov txheej txheem tsim khoom.

Lwm hom fiberboard yog hu ua masonite - nws tau txais siv cov txheej txheem ntub, thaum hardboard raug nias kom qhuav.

Kev sib txawv hauv kev tsim khoom

Thiab txawm hais tias cov ntaub ntawv no koom nrog pawg ntoo-fiber, lawv cov khoom tsim muaj qee qhov sib txawv uas cuam tshuam rau yam ntxwv kawg ntawm daim ntawv. Ntub dej ntub - txoj kev ib txwm kom tau txais fiberboard - txiav txim siab tus phooj ywg ib puag ncig . Qhov no yog vim qhov tseeb tias cov tshuaj sib txuas raws li formaldehyde yuav luag tsis tau siv ntawm no, txij li lawv feem ntau tsis ntxiv txhua yog tias cov khoom siv raw yog keeb kwm coniferous. Hauv qhov no, thaum ua kom sov, qhov sib piv ntawm cov resins, lignin, raug tso tawm los ntawm ntoo.

Yog tias nws tsis txaus, ntxiv 3-7% ntawm cov khoom siv hluavtaws.

Txoj kev ntub ntawm cov khoom siv fiberboard (ntub nias) koom nrog ntau theem ua tiav

• Chopped ntoo fibers tau sib xyaw nrog dej hauv qhov yuav tsum tau ua, nqa mus rau lub xeev sib xws.
• Cov tshuaj ntxiv uas tsim nyog tau tshaj tawm.
• Qhov sib tov nkag mus rau lub dispenser.
• Lub slab yav tom ntej yog nyem tawm mus rau daim kab xev hauv ib txheej txawm tias. Nws cov nplaim muaj cov yam ntxwv ntxaij lim dej kom nrawm tshem tawm cov dej ntau dhau. Tias yog vim li cas cov phaj ntub -nias tau yooj yim kom paub qhov txawv ntawm lwm hom - nws sab nraub qaum tau npog nrog cov qauv tshwj xeeb.
• Cov ntawv ua tiav mus rau hauv qab xovxwm, qhov uas lawv raug cua sov thiab nyem nyem. Lub sijhawm nruab nrab xav tau los tsim 1 phaj yog li 15 feeb.
• Cov khoom tiav tau xa mus rau chav tshwj xeeb nrog qhov ntsuas kub ib puag ncig, qhov twg nws qhuav ("ripens") tau ob peb teev. Lub sijhawm no, huab hwm coj tau sintered zoo, tau txais txhua tus yam ntxwv tshaj tawm hauv tus qauv.
• Thaum lub caij txias, cov ntawv raug xa mus rau lwm chav, uas lawv tau txais ntuj noo. Yog tias qhov no tsis ua tiav, cov khoom yuav nquag ua pa ntawm kev sib cuag nrog huab cua. Cov ntawv ua tiav tau xa mus ntxiv - rau xim, lamination.

Nrog rau qhov pom tseeb zoo li kev phooj ywg zoo thiab tsis muaj kev puas tsuaj , ntub nias tseem yog kev ua haujlwm ntau dua thiab kim dua txheej txheem qhuav. Qhov no cuam tshuam rau tus nqi tsim khoom. Ib qho ntxiv, qhov txo qis hauv cov khoom siv hluavtaws cuam tshuam rau lub zog thiab tawv ntawm cov khoom siv tiav, txwv tsis pub ntau ntawm cov ntawv tuab. Kev ziab qhuav yog ib txoj hauv kev uas tau ua cov tawv tawv. Qhov tseeb, nws zoo ib yam li uas tau siv hauv kev tsim khoom ntawm MDF, tsuas yog cov khoom siv raw muaj cov feem loj dua. Cov laug cam tau tsim los ntawm kev sib xyaw ua ke ntawm cov fibers qhuav nrog cov khoom siv hluavtaws cob. Los ntawm kev nias qhuav, cov ntawv loj loj nrog tuab txog li 15-40 hli tau tsim, uas xav tau hauv cov rooj tog tsim khoom, kev tsim kho thiab lwm yam lag luam.

Cov txheej txheem tsim khoom hardboard tsis muaj zog ntau dua li fiberboard, nws tsuas yog siv sijhawm li 5 feeb, thaum lub sijhawm qhov saum npoo ntawm cov khoom tsim tau nthuav tawm rau cov cua sov nias . Yuav tsum muaj cov tshuaj ntxiv tsawg dua rau cov khoom no, vim tias lawv tsis tau diluted nrog dej. Qhov no txo qis tus nqi ntawm kev tsim khoom, tab sis kuj cuam tshuam rau kev xaiv cov khoom siv ntxiv (feem ntau lawv yog cov khoom siv hluavtaws uas pheej yig tshaj uas muaj formaldehyde). Thaum xaiv cov khoom siv, nws yog ib qho tseem ceeb kom tsom mus rau nws chav kawm tso pa tawm. Qhov ntsuas kev nyab xeeb tsis siab tshaj E1. Nws yuav tsum raug sau tseg tias hauv EU lub tebchaws hardboard nrog ntau dua qhov ntim ntawm qhov sib xyaw ntawm cov khoom phom sij tsis tsim tawm lawm.

Sib piv cov yam ntxwv

Qhov sib txawv tseem ceeb ntawm hardboard thiab lwm hom fiberboard nyob hauv cov yam ntxwv ntawm cov khoom siv tiav. Ntawm qhov sib txawv tseem ceeb yog cov hauv qab no.

• Thickness … Cov ntawv tawv tawv tau tsim txog 15 hli tuab, tsawg dua - txog 40 hli. Fibreboard ntawm hom mos muag feem ntau xav tau hauv cov ntawv nyias ntawm 2-8 hli.
• Lub zog … Cov txiaj ntsig raug rau fibreboard ntau ntawm 100-500 kg / m3. Rau hardboard, qhov ntsuas no yog 550-1100 kg / m3. Lub zog ob zaug ua rau cov khoom siv hauv cov ntawv kaw zoo ib yam rau cov ntoo.
• Cov cua sov rwb thaiv tsev . Kev ntub dej ntub ua rau cov khoom ntxeem tau. Muaj txawm tias tshwj xeeb hom fiberboard nrog cov ntawv "M" ua ntej, haum rau kev txhim kho lub suab tsis zoo thiab cov cua sov-insulating yam ntxwv ntawm thaj chaw. Cov phaj ntawm qhov ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntaws tsis muaj qhov ua tau zoo.

Tau pom tias qhov sib txawv ntawm hardboard thiab masonite (fiberboard), tsim los ntawm ntub nias, koj tuaj yeem txiav txim siab qhov tseeb ntawm cov khoom siv . Cov pob zeb tawv tsis hloov pauv tau yooj yim, tab sis muaj peev xwm nqa tau ntau dua. Kev xaiv ya raws tiv taus yog tsim nyog rau kev ua tiav cov phab ntsa sab nrauv ntawm cov tsev, ib txwm siv rau hauv pem teb, tsim kev faib sab hauv, hauv kev tsim cov rooj tog thiab ntim khoom.

Ib daim ntawv nyias nyias ntawm fiberboard khoov tau zoo, yog li nws tuaj yeem siv los tsim cov arches thiab lwm yam txheej txheem nkhaus. Ib qho ntxiv, cov khoom siv yog ib puag ncig zoo thiab nyab xeeb rau kev noj qab haus huv.