I-Urethane ikhulwa ngokuba yenza kakhulu ngokweqile, lokhu kuyindlela yokukhetha engcono yezilinda zokugcina zokuxhumana. Kungakhathaliseki ukuba kuzo izimo ezingcono noma kuzo izimo eziphakeme, i-urethane iyakhuphela izici zayo zokwenza, ngokuvumelana nokuba ingaba yizimo ezingu -30°F ukuya +240°F ngokukhululekile. Lokhu kuyindlela okutholwe ngokuvavanywa okhombisa ukuba kusebenza ngokuvamile ngokuba yinto ephakeme. Ngaphezulu, ukukhanya komkhiqizo i-urethane kuxhomeke kakhulu ekuvuneni ukuthi kuthole ukweqile ngaphandle kokuthi kuthole ukusebenza kwalo. Lokhu kuyindlela yokuthola ukunciphisa okukhulu kwamandla, ngoba le nto ayitholi ukuthi kusebenze ngokweqile noma ukuba kuthole ukuthi kuzo izimo.
Imampakhi yokuqina kwe-urethane kakhulu ibangelwa kizinhlelweni zayo, njengokwehalela nokweqina kwekugcisa. Lezi zici zivikela ukungcola, ukunikeza ukusebenza okuhlangene nokuqinisekisa. Urethane nakunale ukwehalela kwekugcwala, okuyindlela ngokwezimali kuzo zindlela zokusebenza zinezinto ezihambisanayo noma izindlekile ezingakwazi ukuthutha kwezinye izinto ngokukhulu. Ngokunye, izici zalo zokwehalela kwezilindeko kuyindlela ngokwezimali kuzo ziqinisekile ezikhunjwe kuzo ngokwezifaniso eziningi kuzo zindlela zokuxhumana. Lokhu kuyindlela ukuthi urethane seals ikhale ukusebenza ngendlela efanele ngaphandle koko okungaba yindlela yokuthi kwezinye izinto, ukunikeza ukusebenza okuphezulu nokudala okude kuzo zindlela zokusebenzela ezinhloso.
Intemperature yokusebenza okujulileyo kwezilinda zokusebenza kwenza indima entsha ekuphakamiseni i-performance, ukugcina ubudlelwane, nokugcina indawo yokusebenza ngokuvumelana. Izifundo kubonise ukuthi lapho izilinda zokusebenza zikhonakala kuzindlela zokusebenza eziyinhloko, izindleko zokusebenza zingakhansela kabusho 40%. Ukuzwa kwezi zindlela zokusebenza kwenza indima ekunqumiseni uhlelo lokusebenza, ngakho ukuthuthukisa kwehlelo lapho. Ngakho, ukuthuthukisa sebenziso samaphakethe, kudingeka ukugcina kuzindlela zokusebenza eziyinhloko ukugcina amaphakethe abo.
Izindleke ezihigh ayasingenza kakhulu kwezilinda zokugcina ngokuhlatshelwa kwezindleke, okwenza ukuba kube lula nezindleke eziphansi. Izigcino ezinhlelweyo zekhombisa ukuba kukhona ukulandela okuphansi kwezilinda ngama-20% xa ezilinda zisebenza ngaphezulu kwezindleke eziyinhloso. Ukuthola amathiphu okungena ngemoya wokugcina kwezindleke ezihlukahlukene kuvumela izinkampani ukulawula izicelo zokulungiswa, ukwenza ukuba kube lula kwezikhathi ezingenakusebenza ngazo. Ngakho, ukwazi futhi ukulandela izindleke eziyinhloso kuyakho ukugcina iqendani lezilinda nokunciphisa izinkinga ezingenakubeki.
Izindleke ezibangelwa kakhulu kuma-seal amiyo yekhiwe ngokuba kungase kuba yekhiwe futhi kakhulu kungase kuvale kakhulu lapho kusebenza. Imaphakathi eshacile ukuthi izi-seal eziphakathi kuzindleke ezincane kune -20°F zinezindleke zokuvale kakhulu ngama-30% futhi kusebenziswe kuzindleke eziphakathi kwezindleke eziphakathi. Ukulungisa lezi zindleke, abasebenzisi kungase bakhetha izi-formulation ezithile zekhiwe ezifakwe ngokuthi zilinde izindleke eziphezulu. Ngokukhetha i-formulation eliyini, i-resilience nezinhloso zekhiwe zingase zibilile, ukuthi zilinde izindleke eziphakathi.
Ukushintshana kwezinkelosi kungase kube yimaliphi engqweni yamaphakathi okusebenza kwe-urethane esikoleni se-skirtboard. Xa kunezinkelo ezingashintshi, i-urethane iyakhula neyayizohla, okungase kube yengqo yokuqala kweziphakathi nezindleke. Kukhona ukwaziwa ngemvelo yesiphakathi sokushintsha kwezinkelo. Kwi-urethane, iyahlukana ngokuphelele kwezingu-5.5 ku-6.5 x 10^-5, okusebenza njengesibonelo esikhulu sokulandela ngokulandelelwa ngokulandelelwa ukuze kuthathwe ukushintshana kwezinkelo. Ngokwenza izilungiselelo ezingcono ukuxazulula ukushintshana kwezinkelo, singasebenzisa inkorekthi yamaphakathi, ukuqinisekisa ukuthambiswa okuphelele kweziphakathi nokunyusa isikhathi eside sokusebenza kwezinhlelo.
Ukuphatha ngokuthulukisa izindlela zokugapwayo kuzindlela zokuthutha kuyindlela ebalulekile ekunqubeni izinkinga eziphakathi kwezindlela zokugapwayo ezithintekayo ngokushiphilelwa kwezulu. Indlela ethile yokwenza oku kukusebenzisa izinhlelo zokuthintela zokugapwayo ezinhlelwe ukuthutha izinto zokuguqula amaphosition ngokushiphilelwa kwezulu. Imicabango ikhombisa ukuthi izinhlelo ezenziwe ngokuthutha izindlela zokugapwayo zihlala zingaxhunyiwe kakhulu kwezindlela zokugapwayo. Ngokusebenzisa izindlela zokugapwayo ezinhlelwe, kungakhona ukuthuthwa kwezulu kakhulu, okuyindlela enhle kakhulu kuzindlela ezithintekayo ngokushiphilelwa kwezulu. Ngokusebenzisa lezi zindlela, kungakhona ukuthuthwa kwezulu kakhulu futhi kungakhiwe kakhulu ukusebenza kuzindlela zokuthutha.
Ukufaka amathiphu kakhulu kwe-urethane ayetholeni ukuthiwa kweyona intambo yokunqanda kakhulu, okuhambisa kakhulu isebenta sakhe. Ngokuthetha kakhulu lawa mathiphu futhi awubhlanthi kanye ne-urethane, abasebenzisa kahle amaphormula amathiphu okuthiwa kweyona angitholeni kumathuba amakhulu. Imathiphu ithi ukuthi lawa mathiphu kakhulu angaholela kulindeleko kwezinto ngaphezu kwe-25% lapho kuthiwa kweyona kumathuba amakhulu, okuyindlela yokuthiwa amasele ayetholeni ukuthiwa kweyona noma lapho kuthiwa kweyona imathuba. Ukukhetha amaphormula angitholeni kakhulu; lokhu kumele kutholwe ngokuthiwa kweyona inqubo yokuthiwa kweyona ukuthiwa kweyona amasele ayetholeni ukuthiwa kweyona noma lapho kuthiwa kweyona imathuba amakhulu.
Ukuze kubekeke ukusebenza kumaqondo amakhane, kubalulekile ukusebenzisa izigaba zokwenza i-urethane evelwe ngokuthuluka ukuthi zinezinhlanhla zokulula kumaqondo amakhane. Lezi zinhlanganiso zasebenzisa i-urethane evelwe ngokuthuluka zinikeza ukulula okuningi, okwesiqephu sabonile ukuthi kubangelwa amaphela kwezindlela ezingaphezu kwe-15% kumaqondo amakhane. Le mproveyimenti iyisisekelo sokusebenza kumaqondo amabunu, lapho ubumfihlakalo bendlawo bungenzeka. Ukuhlakanipha ngokudla kwezinhlangano zokwenza izinto kuzinikeza abasebenzisa abathintana nezimo ezikhulu izisombululo ezinhle, ukuthi zikhombise ukuthi zonke izisebenziso zifumane isikhwama esidingekayo kumaqondo amakhane.
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Imigqa egudlana ngokulula iyaphakama kakhulu ngokwezindlela zokugcina ezifanayo, okungaba yindlela yokugcina amagugu kakhulu futhi kuthinte isikhathi eside sokusebenza. Kepha, imibono yesikali yonke ithi ukuthi ukusebenzisa izisombululo eziyisithandwa kakhulu zokugcina kuhlela kakhulu lezi ziphazamiso, zinikeza ukugcina okuhle kakhulu phakathi kwezindlela zokuguqulwa kwezinkelingi. Ngokwaziwa kahle kwezindlela zokusebenza zomgqa wokuvibrisha egudlana, izindustri zingakuvutha izindlela zokugcina ezinhle ngokwezidingo zabo. Le ndlela ayikhuthaze kuphela isikhathi esingatholakali kodwa futhi inikeza ukusebenza okude kakhulu kuzinye izindustri, kubonisa kakhulu ukubaluleka kwezisombululo eziyisithandwa.
Imishini yokusebenza ngokudlulisa amandla ifuna izisindo esetshenziswayo sokulondoloza ukuze iyilaphe ukusebenza kwayo nokubonwa kwezimali ezahlukene. Imibono yekhankaso ikhombisa ukuthi izisindo zase-urethane ezingenziwe ngokwezifiso lokusebenza kwe-dewatering zenza ukuthi zibe yimali futhi zilaphwe ukusebenza ngemva kwesikhathi eside. Umemulo olungile lalo msebenzi wokusebenza kwezisindo kwezindawo zokusebenza kwe-dewatering ungalandela amanye amaphethini, kubikisa ukuthi kudingeka kusebenziswe izisindo ezinhle ezidizaynwe ukuxazulula izidingo ezahlukene zokusebenza ngokudlulisa amandla. Lokhu kugcineni kwezisindo ezinhle akuthola kuphela ukuthi kusebenze ngokugcwele kodwa kuvule amakhono entsha kwezibonakaliso ngokwezifiso ezisetshenziswayo kuzo zonke izindawo zokusebenza.
Izisindo zase-urethane zase-skirtboard zisebenza ngokugcwele phakathi kwe-30°F futhi +240°F. Ngokuphakathi kwezi zindlela, izisindo ziqa kakhulu izimo zabo zokusebenza, zilapha ukuthi kube yimali ukungasebenzi.
Ukupheleka kakhulu kungase kubangela ukugayelela komoya, kubangela ukuthi izilayela zilayele ukulayela futhi zibe yimali, kuthola ukuphantsi kwemisebenzi ngama-20% uma kungaphelela amathreshiyo edvwa.
Ukupheleka okugcane kungase kube nemiphumela yokuthi zibe yimali futhi zilayele ukulayela, okungase kuthole amathreats angama-30% lapho kutholakala ukupheleka okuncane kune-20°F. Ukukhetha amafomithela okhanyayo kwezinkelosi zokupheleka okugcane kungase kuthulela lezi zindawo.
Yebo, amaditivu amakhulu angase akwenzelwa kuzilayela ukuthuthukisa ukulayela komoya, kuthuthukisa imisebenzi ngama-25% lapho kutholakala ukupheleka okupheleke ngemva kwezinsuku eziningi.
Ukulelele kwezibonelo ngokusebenzisa izibonelo ezingaphandle kwe-5.5 kuya kuma-6.5 x 10^-5 kwa-urethane kungavikela ukungqondakali kwezilinda ngokuguqula kwezinkelo, kube lula kakhulu nokusebenza kanye nekati yomsebenzi wamathina.