Urea Formaldehyde Umgubo weGlue, ulungele ukuthunyelwa ~

Ingcaciso yeMveliso

I-Urea-formaldehyde resin (UF), ekwaziwa njenge-urea-formaldehyde resin, yi-polycondensation ye-urea kunye ne-formaldehyde phantsi kwesenzo se-catalyst (i-alkaline okanye i-acidic catalyst) ukwenza i-urea-formaldehyde resin yokuqala, kwaye emva koko yenza into enganyibilikiyo kwaye Isigaba sokugqibela esinganyangekiyo phantsi kwesenzo se-arhente yokunyanga okanye isongezo. I-resin ye-thermosetting. Iresin ye-urea-formaldehyde enyangisiweyo ikhaphukhaphu ngombala kune-phenolic resin, iyaguquguquka, iyamelana neeasidi ezibuthathaka kunye nealkali ebuthathaka, ineempawu ezilungileyo zokugquma, ukumelana nokunxiba okugqwesileyo, kwaye inexabiso eliphantsi. Lolona didi luqhelekileyo lusetyenziswayo phakathi kwezinto zokuncamathelisa, ngakumbi ekwenziweni kweebhodi ezahlukeneyo ezenziweyo kwishishini lokulungisa iinkuni, i-urea-formaldehyde resin kunye neemveliso zayo eziguquliweyo zithatha malunga ne-90% yokusetyenziswa kokuncamatheliswa kukonke. Nangona kunjalo, i-urea-formaldehyde resin kulula ukubola xa ibonakaliswe kwi-acids eqinile kunye ne-alkalis. Inokumelana nemozulu embi, i-viscosity yokuqala engalunganga, ukushwabana okukhulu, i-brittleness, ukumelana namanzi, kunye nokuguga lula. Iibhodi ezenziweyo eziveliswe nge-urea-formaldehyde resin ekhupha i-formaldehyde ngexesha lokwenziwa kunye nokusetyenziswa kwenkqubo. ingxaki, ngoko kufuneka iguqulwe.

Isicelo

Ingasetyenziswa kwiimveliso ezingadingi ukumelana namanzi aphezulu kunye neepropathi ze-dielectric, ezinje ngemigca yamandla, iiswitshi, izibambo zoomatshini, izixhobo zokuhombisa, amaqhina, iimfuno zemihla ngemihla, imihombiso, iithayile ze-mahjong, iziciko zendlu yangasese, kwaye zinokusetyenziswa kwindawo yokuhlambela. ukuveliswa kwezinto zetafile.

Iresin ye-Urea-formaldehyde lolona hlobo lusetyenziswa ngokuqhelekileyo lokuncamathelisa. Ngokukodwa xa kusenziwa iibhodi ezenziweyo ezahlukeneyo kwishishini lokulungisa iinkuni, intlaka ye-urea-formaldehyde kunye neemveliso zayo ezilungisiweyo zithatha malunga ne-90% yokusetyenziswa kokuncamatheliswa.