Umucu wokuvala omelana nezinga lokushisa eliphezulu ubhekisela kwinto evalayo engaba nokusebenza okuhle kokuvala endaweni yokushisa ephezulu.Uhla lwayo lokusebenza lubanzi kakhulu, futhi lusetshenziswa kabanzi emikhakheni eminingi efana nezindiza, i-aerospace, imoto, i-electronics, imboni ye-petrochemical njalonjalo.
Okokuqala, emikhakheni yezindiza kanye ne-aerospace, izintambo zokuvala ezimelana nokushisa okuphezulu zisetshenziselwa ukuvala izikhathi ezishisa kakhulu njengezinjini zomoya, izinjini zamarokhethi kanye nemicibisholo.Kulezi zindawo eziyingozi kakhulu, izinto zokubeka uphawu ziyadingeka ukuze zibe nokumelana nokushisa okuphezulu, ukumelana nokucindezela okuqinile, ukumelana nokugqwala kwamakhemikhali nezinye izici ukuze kuhlangatshezwane nezidingo eziqinile.
Okwesibili, emkhakheni wokukhiqiza izimoto, izintambo zokuvala ezimelana nokushisa okuphezulu zisetshenziselwa ukuvala izingxenye ezishisa kakhulu njengezinjini, amabhokisi egiya, amasistimu okupholisa, amasistimu okuthatha kanye nesistimu yokukhipha umoya.Lezi zingxenye zizokhiqiza izinga lokushisa eliphezulu ngesikhathi sokusebenza kwesivinini esikhulu isikhathi eside, futhi imichilo yokuvala evikela izinga lokushisa eliphezulu iyadingeka ukuze kuvalwe uphawu ukuze kuqinisekiswe ukuphepha nokuthembeka kwemoto.
Ngaphezu kwalokho, emkhakheni we-elekthronikhi, izintambo zokuvala ezimelana nokushisa okuphezulu zisetshenziselwa ukuvala izinhlelo zokusebenza ezishisa kakhulu ezifana nokukhiqizwa kwe-semiconductor, i-optoelectronics, amandla kagesi, nezinto zikagesi.Kule mikhakha, izinto zokufaka uphawu ziyadingeka ukuze zibe nokumelana nokushisa okuphezulu, ukumelana nokugqwala, ukuqhutshwa kahle kwe-thermal nezinye izici.
Ekugcineni, embonini ye-petrochemical, amapheshana okufaka uphawu okumelana nokushisa okuphezulu asetshenziselwa ukuvala ezindaweni zokushisa okuphezulu njengokucwenga uwoyela kanye nemboni yamakhemikhali.Kulezi zindawo ezidlulele, izinto zokuvala ziyadingeka ukuthi zibe nezici ezinjengokumelana nokugqwala, ukumelana nokugqoka, nokumelana nezinga lokushisa eliphezulu.
Ngamafuphi, amapheshana okuvalwa okumelana nokushisa okuphezulu anezinhlobonhlobo zezinhlelo zokusebenza.Ezimweni ezimbi kakhulu ezibandakanya izinga lokushisa eliphezulu, ukucindezela okukhulu, nokugqwala, izinto zokuvala zidlala indima ebalulekile ukuze kuqinisekiswe ukuphepha, ukwethembeka, nokuzinza kwemishini.
Imichilo ye-Styrofoam ingasetshenziselwa ukuvalwa kwemishini kagesi, futhi ibe nemiphumela yokubopha, ukuvalwa, ukubuyiswa kwamalangabi futhi ingangeni manzi, ngakho-ke abakhiqizi abaningi bemikhiqizo yenjoloba yangokwezifiso basebenzisa lolu hlobo lwemicu yegwebu lapho benza izinto zikagesi, futhi kwesinye isikhathi Izosetshenziselwa ukubekwa uphawu kwezingxenye ze-elekthronikhi.Ngokombono, amapheshana egwebu enziwe nge-polyurethane angadlala indima ekuvaleni, ekuvimbeleni amanzi, nasekubambezelekeni komlilo, kodwa umphumela awugculisi ngemva kokusebenza kwangempela.Ngakho-ke siyini isizathu somphumela ongemuhle wokuvikela amanzi emicu yegwebu?
Eqinisweni, umugqa werabha we-polyurethane foam unomphumela omuhle wokungangeni kwamanzi nokuvala.Uma u-opharetha engenakho ukuhlangenwe nakho okwanele noma ubuchwepheshe bokusebenza bungalingani ngesikhathi sokusebenza kwangempela, kuzobangela ukuthi umugqa werabha we-polyurethane foam ungasebenzi ngemva kokwelashwa.Umthelela omuhle ongangeni manzi, noma umphumela ongemuhle wokuvikela amanzi.Ukwengeza, ekusebenzeni kwangempela, uma indawo okumele iboshwe ingahlanzekile, umphumela uzoba mubi ngemva kokuphulukiswa, umphumela olindelekile wokungena kwamanzi ngeke ufezwe, futhi impilo yesevisi izoncishiswa.
Isikhathi sokuthumela: Aug-11-2023