PU Release Agent Kuhlela Kanjani Ukuhlanjuluka Kwe-Mold?

Ukwenza kwe-polyurethane okomzekelo kudinga ukubophelela ngokucophele kuyo yonke indawo yokuphatha, nobunikazi bokuqhathaniswa kwe-mold obhekene njengendawo ebalulekile kangaka ekubaleni ubumnandi beprofuthi nemali yokusebenza. Ukusebenzisa okuphelele kwe Umphawuli wemoldi wePU izakhono zakhiwe kabusha indlela labasebenzisela abakhethi bafaka izinhlayiya zefoam ezinembuzi, bekunika uhlaziyo olungenamandla emva kohlobo lomsebenti ne-binishi yezinxesha.

Ubukhulu bokuphathwa kwezinkulungwane zepolyurethane kwenza izinkinga ezihlukileyo kumsebenzi wokukhupha isimboni, kudinga izindlela ezibuyekezela okuqukethwe okuthinta ubunzima nesilinganiso sezinkulungwane. Ukuziqonda indlela ethintana ngayo into ekususwa kwayo ye-PU nokhemikhali yepolyurethane kunceda abayengcisha ukufunda okoqukethwe ukuze bakhethule izinyathelo zakho kanye nokufakela imiphumela embalwa nezinhle kuzo zonke izimo zokwakha.

Umbiko Wokugcina Wezokuphatha Kwesimilo Se-PU

Isahluko SeMolekiyuli Nenkcubeko YokuKhubeka

Ubungako bokuthulwa kwe-PU kube yisisekelo esiphumelelayo kumthombo walo wemolekyuli nokuthi lezi zinhloso zidlala kanjani ngevenkile yokudweba nokuthulwa kwe-polyurethane. Izimo ezihlelekile zokuthulwa kuyasebenzisa izinkomo ze-siloxane nezinkinga ezinezinto eziphazinyayo ezidala izigaba ezincane phakathi kwesigaba nenkomo ethuthakalisa. Lezi zigaba zemolekyuli zisebenza ngokuchatha okusemncane kwegunya lomoya nokuphazimula kwegunya lekimikhono lokuthi kungahlobelwe kodwa kugcinwe ubunzima bokuthepha kwemithombo.

Ichemikhali ye-PUR esemthethweni isebenza ngokulungiswa kwezilinganiso zomthamo wemolekyuli ukuze ikhuthaze ifilimu futhi ibe neminyaka yobuhle. I-backbone ye-siloxane libe nesisthemelekile kusihlangothini ku-250°C ngelikahle libonakala ngemiphumela emiselwe ekulungeniseni. Ngakule ndawo, izigaba ezitholakeleyo ze-funtional zivumela ukuthi kube nenqwelo ne-adhesion echanekileyo kumayudini ngaphandle kokuthinta imvume yokulungiswa kwe-polyurethane noma imithombo yesiphrotheni.

Ukuzimisa Kakhulu Nokwamukelwa Kwemisebenzi

Amathemphekhure ekusebenziseni polyurethane ekulungeniseni kuyadinga amathemphekhure okweseka phakathi kuka-40°C ku-80°C ekusebenzisa ifo epholile, kanti kube kudinga i-PUR release agent ebalulekile ekubonakaleni kwesikhathi esifanayo kuleli qembu lamathemphekhure. Ukwaziswa okuphucukile kusho ukuthi okulinganiselwe amaphutha wesibayi kubonakala ubuchule obuncane kweviscosity futhi kugcine ukufakwa okuphathelene noma ngemva kokunqula kude. Lokhu kugcina kusetshenziswa ngokushesha ekusungulweni kwebhloko futhi kunciphisa izinkinga emidabeni yezimali.

Ukukhanya okukhanyayo phakathi kwezinhlayiya zomsebenzi wokukhupha PU nezinhlangothi ezangaphambi kwe-polyurethane kudinga ukuqashwa kahle kweminyaka yokuxhumana noma kwezimpampa. Izimo ezintsha zihlanganisa izinhlayiya ezingenamandla okuxhumana ezingavuku isocyanates, polyols, nokuthutha, njengoba zinikeza ukuphepha okuthembekile. Lokhu kukhanya okukhethekile kunesiza ukuthi izilimi zomsebenzi wokukhupha akuzange kuhlukanise imbonding engafakiwe noma ukulungiswa kweyephansi kwegunya eliqediwe iMIKHIQIZO .

Izindlela Zokusebenzisa Nezibopho Zokuhlelwa Kwizilingo

Izindlela Zokusebenzisa Ngokushaywa

Ukusebenzisa kahle kwespray ye-PU release agent kudinga ukulawula ngokucophelela ubungakanani be-droplet, ukuphathelwa kweqembu, nokusetyenziswa kwexesha ukuze kufumaneka imiphumo emehlene. Iisistemu zosayensi ezinezimiso zihamba ngokuvumelekileyo ngu-20-30 PSI ngezi nozzle ezikhethiweyo ezenziweyo ukuba zenze izithunzi ezipheleleyo ze-50-80 micron droplet. Oluhlukaniso olulawulwayo luhlanza ukuphathelwa okulinganayo ngelishwa kungakhokelele ekuthintsheni kwaye akukhokelele ekunzuzeni kakhulu engakungekho kube yeyiphi into eyinxalenye yesayizi yesayizi okanye ubungakanani bokulingana.

Ixesha lokusebenzisa kwespray ye-PU release agent ngokomgca wempilo wenjini kunye nokunyusa kwe-polyurethane kubangela ngokugqitywayo inkqubo yokuhlisa kunye nokusebenza kwe-cycl. Ukusebenzisa okulinganayo kuqala xa iintsontelo zenjini zifikelela i-45-55°C, zinika ifomu eqinisekileyo ngaphandle kokukhokeleka ekudaleni ngaphambili. Iinkundla ezinezimali eziphuculeyo zisebenzisa iisistemu zosayensi ezigcweleyo nezibambekayo zolawulo lwempilo ukuze zilawule izixhobo zokusayisha ngokulinganayo ngoweentsuku zokwakha.

Ukubala Kwekhuba nokhuquleka kwezindikimba

Ukufunda okucophele kudingeka ekubaleni izindlela zokukhulula kwe-PU ngokuhlanganisa ngeometri yemoldi, ubunjalo bokudluliswa, nezidingo zomgcobo wokwakha. Izigaba zesivikelo sizama ukuchaza izindlela zokukhulula phakathi kwe-0.8-1.2 grams kusangqa omnye wesilume kakhulu kumasekelo apholile, nakuba imithombo engcono noma izimodi ezibuthakathaka kungadinga izindlela ezihlelekileyo zokusebenzisa. Ukubala okucophele kwekhuba kuvulela abayenzelaphasi ukulungiselela ukusetshenziswa kwemali futhi kuhlale kukhona isebenza esisodwa.

Izinhlelo zokulandela okuzimeleyo kwe-PU ngokulinganisa nokwakha kuvabaza izinqumo eziphathelene nokhuquleka kwezindlela zokusebenzisa futhi kuzoze kube khona amandla okulungiselela. Izinkampani eziphumelelayo zisetshenzisa ukulandela okuzimeleyo okuxhumanisa ukusetshenziswa kwe-PUR nezikhathi zomgcobo, izinkinga, nezindikimba zokudluliswa ukuze kutholakale izindlela ezifanele zokusebenzisa kwezinhlelo efanayo.

Ukuthuthuka Kwesimo Ngokusebenzisa Izimodi Ezinhle

Izinhlelo Zokulula Ezinezikhathi

Ukwenziwa kwe-Polyurethane kwenzelwa yizinhlelo ezinezikhathi eziphakeme ezibandla izimo ezahlukene zokugcina ukufakwa okunembala. Lezi zinhlelo ziphawula ikhanda lokuqala elinamandla ekugcineni komlomo, ngemuva kwalokho ikhanda lesebenzo elihlelekileyo kanye nokutholakala kwe-polyurethane. Lokhu kubiza izikhathi ukuba kuzenze isebenta kwayo ngaphandle kokuchithwa, okusinika umlando omude wemlomo kunye nokulula okuphambene.

Izint advantages zezinhlelo zokulula ezinezikhathi zika-Polyurethane zibonakala kakhulu emazingeni aphakeme yokwakha apho izinhlelo eziyodwa zezinto eziyodwa kudinga ukubuyiselwa kakade. Izigaba ezihlelekile ziya kunceda ukulula okuhle kuma-50-100 ngaphambi kokudinga ukuhlaziywa, okususa izindleko zomsebenzi kunye nokungahleli komsebenzi wayenziwa njalo xa kutholakala ubumfihlo obuphambene.

Ukufakwa Kwe-Additive Kunye Nezibophozi Zokusebenza

Iifomulayithi ezisemthethweni ze-PU zilandelayo zibandakanya i-additives ezithile ezingenhla izibophozi eziphathelene nokusebenza ngaphandle kokuchasana nesiseko sokukhupha. Izinto eziphula umoya zilungisa ukugcina kwamapulo kwiiveleli zomgca, wozinto okungena kwe-oxidation zakhanda ubunzima bokwanda xa kukhawulezwa ngemini encinane. Le zibophozi zokusebenza zinika abafumani indlela yokuthintela izinkinga eziphathelene nokwakha ngaphandle kokuphila kwezibophozi zakho ekukhupheni.

Ukufakwa kwe-nanotechnology kwiifomulayithi ezideye ze-PU release agent kunceda ubudala kunye nezibophozi zokulungiswa ngokuzayo ezingenisa izikhathi zokusebenzisa kwaye zizidanga ngokujikeleza. Iipartikili eziphakeme kakhulu zenza iiveleli ezimfutshane ezingekela ukubambeka kodwa zibuyelele isimo esisodwa sephrodo, zibonisa uguqulelo olukhulu lolwazi lokuqwalaselwa lokukhupha kwiindlela ezidingayo.

Ukulawula Ubomi Kunye Nokubeka Inyaniso Yokusebenza

Izigaba Zokuchazwa Nezindlela Zokuvikwa

Ukuthuthukisa imithetho engcono yokulawula ubunzima yezivumelwano ze-PU kudinga izibhalo zokuchaza okubalulekile ezingaqashelwa kuzivumelwano zokuvuselela ngokushesha nokuphila kwezinsuku eziningi. Iindlela ezisebenzayo zokuchaza kufana nokulinganisa ukudluliswa ngeemephe ezilungisiweyo, ukuchazwa kwamandla wesandla ngokulinganisa isikhathi sokuxhumana, kunye nokulinganisa ukuphila kwegazi ngokusebenzisa iiprothokholi zokuphila kusasa. Le ndlela ephathekayo inika amandla okulingana ngokuhambelana kwezivumelwano zezixhobo zokuvuselela emva kokwakhiwa kwizigaba ezahlukene.

Ukusebenzisa iindlela zakonzi lokulinganisela zinika amabhange iindlela ezilinganiselwa yokulondoloza izivumelwano zesivumelwano se-PU kwaye zifumanise iinkokhelo zokuphucula. Izicathulo zokulinganisa ixesha lekhondla, izilinganiso zobubi, neendikimba zesandla zenza kube lula ukwenza utshintsho olungenatshabalalo ukuze lukhokele ixesha elide lokwakha kodwa ulindelele utyala obunzima.

Ukususa iziciro eziphathelene nokusebenza

Ukuthwala kwezinhlelo zokugcina i-PU release agent kuvula amandla ekuxazululwa kakhulu kwizinkinga zokukhokha nokunciphisa izindleko zokupheka. Izinga ezifana nowekwa okungafanelekile, ukwebulwa kwegunyathi, noma ukumathulwa kudinga izibonelo eziphathelene ngokuphathelene ekuboneni izizathu esuka kuzo akungenani izimpawu. Ukucoca kahle kususa izibonelo zobukala, izindlela zokuchaneka kwegemistri, nokubonakala kwezilinganiso zokwenza ukuqinisekise ukubona kahle izinkinga.

Ukudala kwezinhlelo zokuhlela phambi kwesimo se-PU release agent systems kusetyenziswa idatha yekhiye yekinselelo ukuze kube lungele izinkinga ezingaba khona ngaphambi kokuba zilungise indlela yokukhokha. Lezi zinhlelo ezenzekelayo zivumela izenzo zokuhlela ezigciniweyo ukuze zilungise indlela yokusebenza komthetho futhi zicophe izigcobo ezingahlali zaziwa.

Izidingo Zamanzi Namaqhawe Emandla

Ukuncipha Kwesimo Kanti Nezinhlelo Zokudluliswa Kwakhona

Imisebenzo yokwakha kamanje iyahlukana ngokuzenzekala kakhulu ekuthinteni inkohlakalo ye-PU ngezindlela ezithembekileyo zokufaka futhi nezinhlelo zokubuyisela okusemvelweni okubuyiselwe. Izinxenye ezigcwele zokufaka zilungisa izimo ephelile zemvelo njengoko zivikela izinto ezingafakiwe ukuze zibuyiselwe. Leliqiniso lezimali lijulile emaqsobhecweni ethu yokuzenzela njengoko lilahlekelwa amathuba okuhlukumeza kanye namathuba okulondoloza izimali.

Ukujikeleza kwezimpendulo ebase ku-manji ze-PU kunciphisa izindlela zokuphuma kwezinto eziphathelene ne-manji futhi kunciphisa izinselelo zokususa isinqumo. Lezi zimpendulo eziphilayo zizolima iziqiniso zobuchwepheshe njengezomthetho waseManje, kodwa zazinzima kakhulu emsulwa futhi kumzabalazo wokusebenza kwizikhathi zokwakha.

Ukulandela Kwezombhalo Nezinhlelo Zokuphepha

Ukugcina iqiniso lokufaneleka ngezimfuneko zokuphepha kwegalasi nezimali kumsebenzi kudinga ukuqonda okuphelele kwesimo sokulungiswa kwe-PU njengoko kutholakala futhi imithombo eshiyekayo yokutholwa. Izinhlelo eziphethwe kakhulu zilandela izinto ezingaphansi kokucopheleka futhi zicime izinto ezibangelwa ucingo ukulandela izimfuneko eziyenzekelayo. Ukudokolozelwa okuhle nokubeka izigaba zokwaziswa kusidla ukuthi imisebenzi yamanufacturing ichaze iqiniso ngelikala ethuthile isimo sezilimi ye-PU.

Ukusebenzisa izibongo ezifanamathanga zokuphepha nokusebenzisa i-PU kusindisa ubube bomuntu ngelikala ethuthile inkampani. Lezi zibongo zifaka izimfuneko ezihle zokuvila, izici zezixhobo zokuphepha komntu, nezibongo zokuphendula ngokushesha ekuhluphekweni kwezimo ezitholakalayo.

Imibuzo Evame Ukubuzwa

Iziphi izindlela ezichaza isilinganiso esihlelokile sokusebenzisa i-PU?

Isilinganiso esifanele sabeka sisebenzisa kusukela ekwelasheni yomjikelezo wemoldi, ukuhlanganiswa kwegesi ye-polyurethane, inzuzo yokwakha, nezimo zemini. Imijikelezo emihle yemoldi ihlala iyadinga 0.8-1.0 g/m² ngelixa imijikelezo enegesi ingadinga 1.2-1.5 g/m². Igezi eziphambenekayo ezinenzuzo ephezulu yesinkwa yamandla zihlala ziyingcinga ukuba kusekelwe kakhulu ukuze kugcinwe isebenza esifanayo ngesikhathi sokulungiswa.

Ibe yini i-PU release agent iba yisimo kumjikelezo wemoldi?

Ubude bezinsuku zokusebenta kwezenzo ze-PU release agent kuguqula kakhulu ngokwesimo semvula, igesi ye-polyurethane, nokuthathu kwezinsuku zokwakha. Ngeminyaka engcono yokwakha kwe-foam ethintekayo, izinto ezinhle zobumba zaba nemsebenzi ethembekile kumaqondana angu-20-50. Ukubekwa kakhulu kwimini engaphezu kwesikhombisa 80°C noma ichemicals eziningiwe kakhulu eziphambene kakhulu zingasusa lokhu ku-10-20 izinsuku.

Kungaba yini umnqwengo wokuphuma kuka-PU ukuthi kuthintele iqamu lesayensi sangaphandle seziphiwo polyurethane ezivuselelwe?

Umnqwengo wokuphuma kuka-PU onenziwa ngendlela efanele kumele angathintele ngokungahle iqamu lesayensi uma izilinganiso nezinsuku zokunikezwa zilungile. Ukunikezwa okwengeziwe kunako kwenza amathambo oqobo noma kuthintele imisebenzi emandla yokudibanisa, ngelika ukutholakala okungafanelekile kungathinta ukuthembeka kwesonto futhi kuthathe isimo. Izinhlelo zakamuva zavela ngokuphelele ukuze kugcinwe ubunjalo bezinhlangothi zomsebenzi wokukhupha ngelikhathi kuyakhupha.

Yiziphi izigaba zokugcina ezingadingeka ukuze kugcinwe ubumbi bezimali ze-PU release agent?

Izinhlayiya zokulula PU kudinga ukugcinwa emathontweni athintekayo emaqondini phakathi kwe-10-25°C ukuze zilindeleke ngendlela efanele. Ukuthi manje ngezulu, amaqondini aphelele, noma izikhwela ze-UV zingalawula iziqhudeni ezisebenza futhi zilungishe isimo. Izinguqulo eziningi zilindile indlela yazo ya-12-24 izinyanga uma gcinwa ngemiphumela etholakele, nakuba ubude besikhathi sobude singahluke ngokwesilingo nesigaba segunya.