Kev sib piv nrog lwm cov kev hloov tshiab phenolic npuas huab cua ciav hlau
Qhov tshiab ntawm lub teeb hluav taws xob qhov hluav taws xob ciav hlau tau zoo heev tsim nyob rau thaum xaus ntawm lub xyoo pua 20th. Ntxiv rau cov huab cua phenolic compound cum, qhov ntau yam xws li polyurethane composite aluminium foil cua ciav thiab cam khov fib ntau pab pawg huab cua duct.Com nrog cov xim sib tov sib xyaw insulated, ciav ciav muaj cov nram qab no zoo:
(1) Kev tiv thaiv ib puag ncig
Phenolic npuas SIV tsis yog fluorine foaming, thiab polyurethane ua npuas nyob rau hauv txoj kev ua ntau ntau yuav ODS ntau heev, ua rau kom muaj kev puas tsuaj rau lub ozone. Fiberglass tsis khiav ODS, tab sis nws ua tau rau cov neeg ua hauj lwm kev noj qab haus huv thaum lub sij hawm raug.
(2) Kev Noj Qab Haus Huv
Cyanated roj yog ua thaum cov tshuab polyurethane raug kub hnyiab, thiab 2-methacrylamide, muaj teeb meem, tau kuaj pom thaum qhov fiberglass ciav raug kub hnyiab [5] .Txhais fiberglass phaj hauv plhaub npoo nrog pp, tab sis, txoj hauv kev thev naus laus zis ntawm iav fiber inevitably rau cuct ua paug, yog hais tias lub khob fiber ntau nrog tawg ri mus rau sab hauv tsev cua, yuav inevitably ua rau tib neeg lub cev huv [6].
(3) Incombustible
Phenolic resin yog qhov zoo tshaj plaws ntawm cov hluav taws kub ntawm cov khoom siv hluav taws xob, cov hluav taws roj hmab phenolic ua npuas tsuas yog tsim los ntawm hluav taws kub tsuas yog txhua qhov kev ntsuas tag nrho mus txog Ib theem ntawm cov nplais qhwv ntsej, hluav taws xob thaiv hluav taws xob ducts, xws li polyurethane composite aluminium foil cua ducts, yog flammable nyob rau hauv cov ntaub ntawv pov thawj, thiab thaum hlawv, hluav taws kub mob yog ua.
(4) Muaj peev xwm hloov tau kom muaj kev tiv thaiv phenolic
(5) Cov dej cawv muaj qhov sib txawv hauv qhov kub thiab txias, muaj peev xwm nyob rau hauv siab thiab tsis kub (140 ℃ txog 150 ℃) raws li cov kev siv ntawm kev siv, ntau dua lwm cov cum ciav dej, tsuas siv tau rau hauv 50 ℃.
(5) Daim ntawv thov dav dav
Cov ciav dej muaj peev xwm siv tau los siv rau ntau yam kev lag luam thiab kev ua haujlwm thiab lwm yam kev cai tshwj xeeb.Polyurethane vim tias muaj teeb meem los ua kom tsis muaj teeb meem hluav taws kub, yog li khawm txwv tsis pub siv, thiab cov fiberglass phaj hauv tsev kho mob, zaub mov ua zaub mov, muaj kev txwv tsis muaj kev tsis zoo thiab cov kev siv cov av qis heev heev.
Cov cwj pwm tau siv
Txhuas cov kab hluav taws ciav hlau yog ib yam tshiab ntawm cov cua ciav. Muab piv rau cov pa ciav hlau, cov hauv qab no yuav tsum raug sau tseg thaum siv:
(1) Thaum lub tsheb thauj mus los thiab kev txav ntawm kev ua pa phenolic foam, kev sib tsoo, extrusion, ntxhib loading, tshem tawm thiab kev sib kis yuav tsum raug zam, thiab qhov chaw tsim kho yuav tsum tsis txhob tawg thiab khi.
(2) Rau cov khoom siv hluav taws xob tsis yog cov kua nplaum, tsis li ntawd, nws yuav ua rau kom txo cov txuag hluav taws kub thiab hluav taws kub, cov khoom siv hluav taws xob tom qab nkag mus rau hauv qhov chaw ua haujlwm, yog li ntawd, yuav tsum tsis txhob cia rau hauv cov cua qhib thiab nag drenched, sab nrauv rwb thaiv tsev yuav tsum tsis txhob yuav tsim nyob rau hauv rainy hnub.
(3) Aluminium foil ciav ua ke los yog ntug kev puas tsuaj thaum tsim kho, yuav tsum nruj nruj nrog cov cement sib koom thiab filling, thiab tom qab ntawd ces lub ntsej muag nrog ib qho hnyav ntawm cov nplaim hluav taws qub txheej pov tseg thiab txheej txheem kaw nrog aluminium nplaum nplaum, ua tiav cov moistureproof txheej, kom tsis txhob los nag hauv.
(4) Kev pabcuam kev sibraug thiab kev tswj kav yuav tsum muaj kev pabcuam kev txhuam cov ntaub qhwv thiab ntawv ci kom tsis txhob muaj kev puas tsuaj, tshwjxeeb los ntawm kev siv ntau yam khoom siv hluav taws xob ua kom tsis muaj pa thiab crushing.
(5) Cov khoom siv ntsug ntsug los sis cov kav ntsaws kav hlau yuav tsum pib, coj los ua ib qho kev sib tw hauv qab los ntawm pob ntiv taw los yog pob zeb, thiab lub nplhaib kom khi nrog cov ntaub qhwv ntsej muag, thaum cov khoom siv kab rov tav, tsim los ntawm kev ntim tho pob zeb los yog pob zeb, cov khib nyiab thiab txoj hlua khi nrog cov ntaub qhwv ntsej muag.
(6) Roughness ntawm aluminium foil composite ciav yog li ntawm 0.15 mus rau 0.3, kev tsis sib haum xeeb thaum cov ciav tsim feem ntau yog xam raws li cov yeeb nkab steel galvanized, yog li ntawd, yuav tsum nce hauv cov nyiaj tau los ntawm cov nqi coefficient.
