Ingabe Intsimbi ye-PU Iyakhiwa kuMgodi futhi Ibukele Imali?

Umthombo wokwenza i-polyurethane unaphakade ubhekene nombuyiso ukuze uqondelela ukusebenza ngokushesha futhi uvikele ubumnandi bomkhiqizo. Okunye okubaluleke kakhulu okubangelana nokwenza izindleko zokusebenzela nezimali yekhono kukusebenzisa kahle izinkomba ze-intsimbi ye-PU. Lezi zinkomba ezithile zemikhumbi zisebenza njengomshini phakathi komgodi nomfanekiso iMIKHIQIZO kanye nezinhlobo zomlomo, ukukhatha kakhulu nokuvikela ukuthi izinto zithole ngendlela ethulwane. Ukuziqonda ukuthi indiza yokulawula PU engcono iyakhiye kanjani umthwa wokumaka ngelinye ilapha kuyadingeka kakhulu abayimbiza ukuze bafakwe phambili ekususweni kwembono esehlukene etheyini yamanilesi.

Ukuziqonda Indiza Yokulawula PU Nokusetshenziswa Kwazo

Uhlelo Lwezidlavu Nezimo Zokusebenza

Ukumiswa okwamanje kwezimali ephuthayo kusebenzisa izimo ezihlelo ekhethuwe ukuthutha izimo ezinembile ngelokhu kusungula amafomu. Le zimali zihlanganisa izinto ezisebenzayo ze-silicone, fluoropolymers, noma izinkomba ezithile zamaphutha okunqamula okuphepha kakhulu. Isakhiwo semolayithi yesimali esihle sokunqamula kusetshenziswa kuthutha isilinganiso esincane kuqobo lokugcina ngelokhu kuyekela inkimbinkimbi enempilo yendawo yonke njengoba kusebenza kumgwaqo. Inkimbinkimbi yokukhanya kuyizwa kakhulu uma kusebenza nezinhlayiya ezihlukene ze-polyurethane evela kakhulu kwintambo ngexesha lokugcina.

Izinkcazelo zokusebenza kwegentili ephathekileyo ye-PU ezihle kudinga ukuphila ngaphandle kwezici zokuthutha kuphela. Lezi zinhlangano kumele zibonise ukufakwa okuhle kwesithombe, ukubamba kahle kumazibuko emshanelweni, nokukhathazeka kwezinkinga zekechemikhali kusuka kumadoti we-polyurethane. Izenzo eziphucake kakhulu zafaka izici zokukhathala kwebhubhubhu nokstabile kwe-UV ukuze kugcinwe isebenza esihle kuzindlela zonke zokwakha. Ukukhetha umdwebo wokqala obalulekile kuqukethe isebenze sokuthutha ngokushesha nokukhathazeleka kwemshanelo ngokudala.

Izindlela Zokufaka Nezilinganiso Ezihle

Ukusebenzisa tekniki yombono kuyaphatha kakhulu ubunzima bokuthutha okwesivinini kuqhathaniswa nge-Pu. Ukusayisha kuyindlela ephathekile kangaka, ekunika ukufakwa kweqembu elingelili futhi ukusebenzisa kahle umfanekiso xa kwenziwa ngendlela efanelekileyo. Inqubo yokusayisha iyadinga uqobo oluphambene lokusayisha, ukukhetha inozeli, nokuhlanganiswa kokuvela ukuze kufakwe kweqembu elingelili. Ukusebenzisa kabanzi kungalolisa izimpawu zomfanekiso, futhi ukufakwa okuncane kungalolisa ukuthakatha nokudonsa kwamandla.

Ukuvikela kakhulu kufundiswa ukuxhumana phakathi kwehindlela yomgodi, umzimba wesayizi, nezidingo zejenti yokuphulula i-PU. Izinhlelo eziningi zomgodi ngezihlalo eziningi noma izici ezinzima kungadinga izindlela eziyiswe noma izifundo eziphethwe ngokuthile. Umkhawulo wethemalika womgodi wanakekela futhi ixesha elilungile lokusebenzisa kanye nezidingo zokugcina. Abayenzayo kumele bakhule amathuba ahlelekileyo abhekene nalezi zinto baye bathintathe ubunzima bezoviko ngaphandle kwamava.

Ukunyusa Kwesikhathi Somgodi Ngokukhetha Kwayo Ijenti Yokuphulula

Izingxenye Zokuvikela Isayizi

Izinsiza zokuphelelwa zejenti yokukhupha engakhethiwe ngempumelelo ebuyelela kancane kangangekutholiwa kwakho. Lezi nkonzo zenza ikhanda elivulekile elithintela ubuchwepheshe bokusebenza nokubuthakathaka okutholakala ngemvume yezikhathi ezihlukene. Lekhanda lilungiselela ukuthintana ngqo phakathi kwezinhlobo zokusebenza kanye nezinye izinto zokudala, lithintela ngokubanzi amandla okucindezelwa ngokugcwele, ukulahleka kwezinto, nakho kwezinkinga eziphansi ezingahlala kusuke.

Izinqumo zokukhuselela okufakwa kusayensi zihluka ngokwesayensi esithile esisetyenziswa kumongo wokulawula PU. Izinkampani ezisekelwe kusilicone zinika ukuthuthukisa kakhulu nokukhathazeka kwesayensi, ngelixa izimpendulo ze-fluoropolymer zinika iimpawu ezipheleleyo zokungcinca nokuzaliseka. Kufuneka umsebenzi wokukhetha uwazi ngesayensi esithile se-polyurethane, izinto zomgodi, nezimo zokusebenza ukuze kufakwe ukukhuselela okuhle. Ukulinganisa kakhulu klobo komgodi usiza ekuboniseni ubuncinci bekukhuseleko okukhethiwe.

Ukunciphisa Ukugcina Kwezixhobo Nokucindezelwa Kwesayensi

Ukucindezeka kwezenzo kuyisahluko esikhulu esikhuluma ngalo emsulwa wokusebenza kwamakhalo ekwakhiweni kwezinhlelo zepolyurethane. Ngasinye isikhathi sokukhupha izinto, amakhalo aphakathi kusenzo, ukugaya, nezinkinga ezinokuthi ziphumelela kusiphumla komthwalo. Umshixo otholakala ngempela wokucofotha kwePU uphazanyiswa lezi zixhobo eziphambene ngokuphepha umsebenzi wokuhlukaniswa kwezinto. Izigaba zokulubricate zezinsiza amaphutha wesibayi zikunciphisa ingozi eyadingekayo ekukhupheni izinto, ngalokho kunciphisa ukucindezeka okudlulelana kumakhasimende amakhala akhethekile.

Ukushaya kwegesi kusuka kuzinhlelo zepolyurethane ezingenazo zibangela indlela enye ethinta ubude bomthwalo wamakhalo. Izocyanates nezipolyols zingasebenzisane nezimpendulo ezithile zemakhalo, ekhuluma ngokuchaphazeka kwesandla nesizathu esichaphazeka esidinga iqembu eliphilile. Okuhle Umphawuli wemoldi wePU izifomu zabelana nesivumelwano esingekho kube yinkimbinkimbi sokuchazwa okukhathalelayo ukuthi lezi zibalo ezibuthakathaka zize zingaphinde ziphakamise imbono yemoldi. Ukukhetha izibalo zobuchwepheshe bezivumelwano kusivumela ukuthi kube khona ubungakanani bukude phakathi kwe-polyurethane system nezibalo zemoldi.

Ukulawula Izindleko Futhi Imiphumela Yezempilo

Ukunciphisa Ngqo Izindleko Ngokuphazanyiswa Kwezilawuli Zemoldi

Imiphumela yezempilo yokusebenzisa iphrojekthi ephathelene ngokuphelele ye-PU release agent iyasho ngokuphazanyiswa kwemisebenzi yezilawuli zemoldi futhi ukuhlukaniswa kwezinsuku zokusebenza. Izindlela ezibalulekile zokulawula njenge-polishing, ukubuyisela isimo, nezinye izenzakalo zesivumelwano singaphazanyiswa kakhulu uma izifumo ezihle zebhola emoldini ukukhululwa kwezishiselwa kwezixwayiso nokulahlekelwa. Isamba esikuphila ngokuphazanyiswa kwezilawuli sikhuphela ekunikezeni amandla okukhiqiza kangcono futhi izindleko zolabora zibe nzima.

Ukulinganisa izindlela zokuncipha kumindleko yemvumelelo kudinga ukulandela ngokujulile izikhathi zomsebenzi wamakholo, izilinganiso zokulungiswa, nezindlela eziphathelene nokuphazanywa kwesikhathi. Izisevisi zokwakha zihlala zibona izinyathelo ezinkulu kulezi zindlela emva kokusebenzisa izinhlelo ze-PU ezigcwele. Ukuncipha kwezilungiso zokuthintana nokulungiswa okungadingeki kusenela izindlela ezifinyezayo ngokunembile kwaso kwalokho isikhathi sokuphatha uhlelo nokuqashiselwa kwezinto ezilondoloza.

Ubuchwepheshe Bokwakha Nokuthuthukisa Kakhulu

Ngaphandle kwezilungiso ezindaweni zomindleko, ukukhetha kwegcine kwezimpawu ze-PU kusiza ekuthuthukiseni kwesikhathi esigcinwa ngokwakha ngokunciphisa izikhathi zomsebenzi nokuqina okunciphile. Ukusuka kwesicubu esihlanzekile, esisodwa kusivikela ukuthintana nokusiza ngendlela yokudonsa, nokusebenzisa kabusha. Lezi zinyathelo zizange ziqonde phansi emva kwesikhathi eside sokwakha, zavela izindlela ezinjalo ezikhulu.

Ukuthuthukisa kwezobuchwepheshe kuyisibonelo sesiphumo esibaluleke kakhulu ekonomini ngenkathi kusetyenziswa izixhobo zokuhluka kahle ze-PU. Ukusebenza okuphathelene ngokuphambene kokuhluka kunciphisa izinkinga zomjane, ukwahlukana kwezilinganiso, neezinkinga zomqondo okungakwenzela ukuba indawo ibulawo okanye kube yimfuneko yokuprosesa kabusha. Ukuthuthukiswa kwezinkamva eziyihlala zibandakanya ezinjalo kwizikhathi ezimbili zikunciphisa imali yokuqhuba ngaphandle kokunakekela inkcubeko yabasebenzisi. Iifomulayithi ezininzi ze-PU release agent zinezandla ukwenza iiparthi eziphume ngokuphumeleyo okuqukethwe yiindlela eziphilayo ezingcono ezingazisa intengo kakhulu emasethingini azithile.

Iimfuno zokukhetha i-PU Release Agent ephumelelayo

Ukulinganisa Ukuqhathaniswa Neempawu ZePolyurethane

Ukukhetha i-agent yokuphulisa PU okufanele kudinga ukubala ngokuphelele izindlela zokutholakala ephatha isiphumo esikhathi-sasemandulo nasekuqaleni. Ukutholakala kwezimodi phakathi kwezinhlobo ze-agent yokuphulisa nezinhlobo zokuvikela polyurethane kuyisici esibalulekile ekukhetheni. Izimo ezingatholakali kungazama ukwakha izinkinga ezehlukene, ukukhula kwezizathu, noma ukuphuliswa ngaphambi kokusenziwa komdudu wagent yokuphulisa okugcineza ubunikazi bokuphatha.

Ukubala kokutholakala kufaka phakathi ukuchaza emshinelini ngezimo ezibonakala njengomthwalo wemisebenzi yempahla. Lokhu kuchazwa kufanele kubeke inqubo yokuphulisa, ubunzima bezinsimbi, izisthulu zokukhula, nokuthuthuka kakhulu kuzinzileyo zezimo zokusebenza. Futhi lokhu kuchazwa kufanele kubeke phakathi izinyathelo ezingaba khona nezinye izinhlobo zezilimi ezithinta njengezicathuli, izigaba, nezihlamvu zokuphazamisa izimpofu ezingaba khona kumfanekiso we-polyurethane.

Iinkcukacha Nezinye Izinsiza

Imisebenzo yokwakha kamanje iyaphila ekugcineni ubomi bokamundi nokhuseleko kumsebenzi wokukhetha izinkimbi. Kufanele izimo zokwenza i-PU ziphathelwe ngemithetho ephambene futhi zinikeze izici ezihlakaniphile zokusebenza. Izimo ezingenazo VOC zolwandle zikhipha ukungcoliswa kwesiphiwo kanye nokhulekisa imizamo yendawo yomsebenzi, ngelixa izinhlelo ezibasetshenzisayo mazinye adala ukuthwalwa nokhuseleko okutholakala kuzindlela zokusebenzisa izibhedele.

Ukuqhubeka kokuhlinzeka kuya phambili kwindawo yesicelo esikhathiwo kufaka phakathi izidingo zokugcina, ukuphatha nokususa. Izincwadi zedatha zokuhlinzeka zinikeza ulwazi olubalulekile ukuqasha izinhilo ezifanele zokuphatha futhi izimo zokuphulama ngemhla. Kufanele kube yilapho izindleko zokunakekela zonke zibe yinzima, izindleko zokususa inkunzi, noma izixhobo ezithile eziyadingekayo ukuqinisekisa ukusebenzisa isayistimu se-PU yokukhupha.

Izimiso Ezilungileyo Zokufaka Futhi Ukugcina Ubude Bokhono

Ukuthuthuka Kwezinyathelo Kunye Nokwakhiwa Kwizinhlobo

Ukufakelwa kweqiniso kwezibizo sokulunga kwezixhobo zika-PU kudinga ukuthuthuka kwezinyathelo ngendlela ethile kunye nezibhalo eziphambene ezivimba kakhulu. Inyathelo yokuthuthuka kufuneka ibe yinxalenye ekhethekileyo yesabelo, imigomo yokuqhubeka, nokulinganisa izixhobo zokulawula ubumnyama okulungileyo kuwo wonke amaxesha okukhokha kunye nabasebenzi. Ukugcina izimo ezifanayo kususela kuzilingo okungahle kube lungenjalo okungaba khathazekileyo kakhulu kumsebenzi wemoto kunye nokusekela kwamakhasi.

Kumele kube yinkundla yokuzima kwezimali ukufaka uhlu olubanzi lomthetho wokusebenzisa, izilwane zokulungiselela, nokuchaza izinhlelo zokulondoloza imiba. Izinhilo zokuphatha kusiza ukuthi bonke abasebenzisi bafunde indlela eyimfuneko yokusebenzisa i-PU release agent baze babone imiba esingazange ibe yinkinga ngaphambi kokuba ikhishishe ekunikezeni. Ukuhlolwa kwezinyathelo ngeke kuyekelwe njengoko kutholakala futhi kubonakale amandla okuthuthukisa ngokuphindaphindi.

Ukugcina Kunye Neenguqulelo Zokulingana

Imithetho epheleleyo yokubamba ubomi inika imvume ngokushesha mayelana nokusebenza kwegenthi yokukhupha PU futhi ikuvumela ukulungisa ngokomthelela ukuze kube nesiphumo esihle. Kumele kube nezindlela zokulinganisa izidingo, igama elikhazimulayo leprofayili yezinto, ukubala kwezimo zemoldi, nezindlela zokulinganisa ukusebenziswa kwegenthi. Ukulandela kahorhorho kufundisa izinhloso ezingavuma ukuthi kudingeka ukulungiselelwa kwemisebenzi noma ukubuyekezwa kwegama.

Imithetho yokulinganisa kumele ibe nezilinganiso zokulinganisa nokulinganisa okwengeziwe ukuze iphinde iphawule iziphakamiso zokusebenza kwegama. Iziphumo ezixhaswayo zingahlola izimo zokusebenzisa nezindlela zokugcina, ngelikhalifa imbono yokuhlola iyathembisa ukuthi izimo zeprofayili zizothintela. Idatha etholakele ngalawa mithetho isekela izinyathelo zokuthuthukisa kahorhorho futhi ichanekise izimali ezitholakele ngokusebenzisa igama lokukhupha PU.

Imibuzo Evame Ukubuzwa

Ukuphi okufanele kube khona ukusebenzisa igenthi yokukhupha PU emoldini

Umkhawulo wokusebenzisa i-Pu release agent ungenelwa yizinkinga ezimbili kusukela kumthombo wokwakha, ubume bokugcina kwepolimeri, inani lokwakha, namathuba akhethekile. Okunye okusebenzisayo kuthola ukuthi i-Pu release agent ephathelene ngokuhle kusebenza kakhulu izikhathi, njengama-10 kuze kube ngu-50 ngokulinganiselana nokusebenza. Ukubeka isimo sezindlela zokuhluka nezigaba sezigaba sibangela ukuthi kugcinwe isikhathi esifanele sokubuyisebenzisa ngokulinganiselana nesidingo sekhasimende.

Kungani i-Pu release agents zibangela izinkinga kwizinto ezakhiwe?

Izimpendulo ezivuliwe kahle nezisebenzisayo ze-PU azisingeki ukuthi zenza amahleca emehluko ye-polyurethane. Kodwa-ke, ukusebenzisa kakhulu, ukulinganiselana kwesayensi, noma izimpendulo ezigcwele kungalungiswa kungazama isimo sesenzo, ukuhlanjulwa okubi emsebenzini olandelayo, noma ubuguqulwa bezinga. Ukukhetha ngokuqonda ngokulinganisa nokulinganisa nokulandela izibonelo ezinconywayo zokusebenzisa kususa umsindo wezimpawu ephathelene ngabe kuyaqinisekisa ukupheliswa kwegumbi.

Yiziphi izindleko ezihlolwe ekunikezeleni izinhlelo ezigcinwayo ze-PU release agent

Ukuncipisa izindleko kusuka kumthombo wokulunga kwamathuba okulungiswa kwe-Pu kuqondakala ngokwesikhathi esikhulu ngenxa yovolumu lokwakha, ubuchwepheshe be-mold, nokusebenza kwezinqubo zokuphatha kanjalo. Izisekelo ezifana nezinye ziphawula ukuncipisa kwezindleko zokuphatha kwezingu-20-40% nakunye nokuthuthukisa kwezimali eziyizingu-5-15% ngokuthintana kwezikhathi futhi nokuthuthukiswa kwezinkinga. Okunconywa konke kuhlale kuthembisa izinhlelo ezihlukene ze-Pu ngokuba kubakhona umlando ophansi kanye nokuncipisa kwezindleko ngokuphelele.

Iziphumela zezenzo zezempilo ziyenzani njani na kuziphumo zokukhetha i-Pu release agent

Imithetho yesiko sezingqondo kuyisisekelo sokukhethwa kwezixwayiso ze-PU ngokungcoliswa kwezinkinga ezivuthiweyo, izinkimbinkimbi zezingqondo zemvelo, nezidingo zokususwa kwesibindi. Izinhlelo eziphucakaneni ziqhubeka ngokusebenzisa izici ezizayo noma izinhlelo eziyintambo-VOC ezingcono ezingumlando omkhulu ethembekile kodwa zilungiselela imiphumela emihle. Ukuqinisekisa ukuthi kuhlanganiswe nemithetho yesiko sezingqonda kudinga uhlololo oluphathelene nokuthi izinhlelo zezinto, izindlela zokufaka, namathuba okuphatha isibindi ukuze kutholakale indlela yokwakha engcono.