Kungani Isisekelo sika-PU Siyanele kumaqiniso amaphepha akhokhelwe ngokuphelele?

Ukwenza amaphrothothi angezantsi angcono asebenzisa i-polyurethane iMIKHIQIZO kudinga ukubophelela ngqobanga kuzo zonke izinto zomsebenzi wokwakha, kuze kube yisikhathi sokukhupha kwesibhamu esiphelile. Phakathi kwezinqawatha ezibalulekile eziphatha inkinga yokuphila kweprodukthi, isenzimano se-PU sibe yindawo ebalulekile kakhulu ekufuneni ubumfihlo obugcwele nokusebenza kahle. Leli fomulayithi lesendlethini eliseceleneyo liba njengendlu yekhono phakathi kwe-polyurethane ethintayo nendawo yokwakha, libe sigcine ukuthulaswa ngaphandle kokulahla ubumfihlo bempilo yesiprodiyisi nezixhobo zokwakha.

Umcebo wokwenza i-polyurethane foam wabuyekezeka kakhulu ngeminyaka engamaqashini, kanti amabhengele angcono ayadinga izisombululo ezivamile ukuze zihlale kwiimali eziphambene kakhulu nemiqhuba yokwakha. I-Polyurethane release agents yashintsha ngokuvamile ukulungelela lezi zidingo ngokufaka izixhobo zokugcinwa okuqukethwe ezibonelela ngemisebenzi emihle kuzo zonke izimo zokwakha. Ukuziqonda indima eyisiseko yalezi zixhobo kuyafuneka kwizikhumbuzo ukuba zilungise imisebenzi yawo nokufumana ubunzima obuchanekileyo.

Izinto ezinobukhono zibandakanya izinkinga ezininzi ezidlulana, kodwa ukukhetha nokusebenzisa ezifanelekileyo amaphutha wesibayi husulela ukuthetha kakhulu phakathi kwezimali ephathekayo zokwakha kanye nezindleko eziningi zokwakha okungahle. Ubunzima bechemically ye-polyurethane badinga izimpendulo zokuhlukunyezela ezingcono ezaqhubeka ngendlela ethembekile phakathi kwezimo ezahlukene ze-temperature, izikhathi zokulungisa, kanye nezinhlelo zomlomo ngenkathi zilondoloza ubulandelwayo bechemically ngefothi yomlando.

Ukulwazi ngezibonelo ze-PU Release Agent

Umboniso Wokulinganisa Nenkinga

Ubunconyi obuphumelelayo bezimpawu zezimpawu ze-PU bubukeka ngokuchazwa kwegunya le-chemical, eyayike kakhulu ibandakanya izigaba, izixhenxezelo, kanye nezimpawu ezithile ezenzelwe ukwenza isidingo esihle phakathi kwezinto ze-polyurethane kanye nesayithi somlomo. Lezi zigaba kumele zifinyelele indlela eqinile phakathi kwezobunjalo zokuhlukunyezela kanye nokungathintelani nokulungiswa komlando noma izici zokugcina.

Izivivinyo ezintsha zisebenzisa izinhlelo eziphucansi zemolekyuli ezakha izifanekiso ezizwakalala zokuphepha kumathe. Lezi zifanekiso kumele zibe nezici ezithile zokuthuthana kwesibindi ukuze zilinde iziphazamiso ezihlukahlukene ezabekwa ngenkathi kuyenzeka ifomu ye-polyurethane. Isayensi sekhemikhali yesivivinyo esihle isetshenzisa izici zomkhuhlane futhi okunye okungaphathelani nomvini, ukuqinisekisa ukuthi kutholakale ukubangelana nokuthi kusekelwe kuzo zonke izimo zepoliyurethani ngemuva kokuthi kugcinwe ubume bezivivinyo.

Ukukhathazeka kusibindi kuyinxenye ebalulekile esibili sekhemikhali yezivivinyo ze-PU. Ngenkathi kuyenzelwa ifomu, amathe angaba nobude obuhlukene ngokwehlukwana kwezimo nezidingo zokuphepha. Iziphiwo ezinhle zezivivinyo zizokuphepha kakhulu kuleli bume, zikhubaza ukudibanisa okungaba khona okungahlinza ubume bomfanekiso noma kuhluma izixweba eziningi.

Iindlela Nezethulo Zokusebenzisa

Ukusebenzisa kahle kwesivuno se-PU sikhomba ukuziqonda kwezinto zomkhiqizo nokufuna okuthile kwezinhlelo yokwakha. Ukusayisha kuyindlela eyisisekelweni, ibeka imvume yokuqasha kakhulu kumjelo wokufaka nokubanzi kwesivuno. Lendlela ibeka amaphara akwazi ukufaka ngokulinganayo emigangeni engcono yezimodi njalo ekulindeleni izindleko futhi ibeke iziphumo ezifanayo.

Isikhathi sokufaka kusivuno sekuphathelene kakhulu nokufakwa kwezimali eziphathelene. Ukufaka isivuno emathekeni apholile kakhulu esisekelweni kakhulu kusivuno kusivikela ukuthi kungabi nomdaka ngaphambi kwehla. Amabhizinisi abagcini bahlala behlela izibonakude zokusebenzisa eziyavuma izilinganiso zokufaka, izikhathi zokuhlala, nezikhathi zokufakwa futhi ngokufanele kwezimali zakho.

Izimo zezulu ngexesha lokusebenzisa kuthinta kakhulu ubunzima bomsebenzi wokusebenza kwamaphoyintsi. Izinga lemhlabathi, ubungakanani bokuphuma kwezulu, kunye nekhamva yezulu zonke ziyinxalenye ekuthintela indlela efomu ngayo i-release film kumgama wesimame. Ukuziqonda le ngxaki kuvumela abasebenzi ukulungiselela imiyalelo yokusebenzisa ukuze bafumane iziphumo ezifanayo phantsi kwemeko eyahlukileyo yokwakha.

Ukubangelwa Kwezimali Kwinkqubo Yokwenza i-Foam

Isenzo Sehlelo Kunye Nombono

Ubuncinci bezinye iifomu zezinto ezenziwa kubaluleke kakhulu kwiimpawu zokusebenza ze Umphawuli wemoldi wePU esetyenziswayo ngexesha lokwakha. Iiphowintsi ezinezibonelelo ezipheleleyo zenza iihlelo ezingelushwanga ezingaphantsi kokuprosesa emva koko, zikweleza imali yokwakha kwaye ziphucule umbono wokugcina. Ubume bomthetho wefilm yesipho buqukethe ngqo indlela amathuba okuphendula aya kusuka kumgama.

Ukuphila kwezivuno elingafanelekile kuyaphakama njengoko kunezinkinga zokubonakala, kanye nokuthinta okukhulu, amashushu, ama-ghraw marks, noma izinto eziphakeme ezingaqedi kumsebenzi ophelelwe. Lezi ziphikiswa ziyaphatha ubunzima kodwa futhi zingahlawula izici ezisebenzayo njengebophelo, ukufaka, nokukhathazeka kumazinga. Iziphunjwa zezivuno ezinezindlela ezahle zilungisa lezi zinkinga ngokusebenzisa izinhlelo eziphucansi ukuze ziphule umsebenzi wokuphatha.

Ukulingana kwembala kuyinxalenye ethile ebalulekile yokulinganiso kwesayizi esinenzuzo kusukela ekukhethweni kwezivuno. Kukhona izinhlelo ezithile azizungezela nezibambisana nezibambisana kanye nezibambisana kulesi siyasi sepolyurethane, okuyakhiqiza izinkinga zokubonakala komsebenzi ophelelwe. Iziphunjwa ezinezindlela ezahle zilondoloza ukulingana kwezinkinga ukuze ziphule izici zombala engcwele ngelinye ilungise izinkinga zokulahleka.

Ubuncane Nokulingana

Ukufinyelela kwezilinganiso eziphumelelayo kumaprodukthi akrekete kudinga izimbondo zokuphuma ezinikeza imiphumo engafani ngenxa yokungahleli kweqondo le-expand na-le-cure. Ubude bendawo nesilinganiso sekhefana sokuphuma singahlukanisa indlela i-polyurethane ingcwalisa ikhayili futhi ibeke isimo sakhe ngexesha lokucula.

Uhluka kwemiphumo yezimbondo zokuphuma kungethulwa kuhluka kwezilinganiso okukhathazeka ekufakweni nokusebenza kweprodukthi, ikakhulu emisebenzini efuna izilinganiso ezigcwele. Abasebenzi abaqhubekile basebenzisa izimbondo zokuphuma nezilinganiso ezitholakeleyo ukuze bakhumbule ubukhulu besilinganiso ngokujikeleza kokwenzeko futhi bakhuselele ukuchithwa kwezinto ezingaphandle kwezigaba.

Kufanele kube khona ukuzimiswa kakhulu ngokuhlanganiswa kwezivuno zokukhupha nezinyathelo ezahlukene ze-polyurethane ukuze kutholakale ubungakanani. Izinga le-chemistry yezivuno zokukhupha zingasuka kwenza iziphazamiso ku-manifold expansion characteristics noma ukushisa kwe-curing rate, okungaba yindlela yokuba kube nenhlansi noma amandla ophakeme angavikeli iqiniso.

Ubunzima beZokwakha kanye Nezimali Ezitholakala

Ukulungiswa Kusuku Lokuqala

Ukukhetha kwezivuno ezihle zokukhupha kwe-PU kubangelwa ngokudla kusuku lokuqala lwemfundo ngokunciphisa nokuhlala kakhulu kwe-demolding processes. Xa izinto zikhuphela kahle kumold uma ziyaphakama noma azifuni amandla aphezulu, abasebenzi bangahlala nezindima eziphila kakhulu emsebenzini wabo futhi bahlule amandla ekulahlekelwa kwizinto noma ukulahlekelwa kwemold.

Izimo zokugcina kwezinhlayiya ezihle zokulula kungaqondileka izikhathi zokukhupha izinto. Izinhlayiya ezingaphuli ngempela emva kokugcinwa kwizikhathi ezifanelekileyo zizingenisa ukuthi abayimbenzeli bakhusele izimu ukuze bangcono izindlela zokusebenza nezimali. Lokhu kusabalalisa ngqo ekwandisweni kwezimali zokwakha nokuncipha kwezimali yokwakha.

Ukusebenza okuhambisanayo kokulula kungasivikeli ukuthi kufunekene ukulungisa imiba noma ukubuyekeza izinhlayiya eziphakeme noma ezilahlekile. Abayimbenzeli abasebenzisa izinhlayiya ezihlakaniphileyo ze-PU zibona ukuthuleka okuncane kwezinyathelo zokwakha futhi bangcono izindlela eziyisikhathi eziyisikhathi ezingasetshenziswa kuzindlela zokusebenza nokubekezela izinyathelo zokuletha kumasese.

Ukuvikela Kuhlomo Nokuhlela

Izimali ezobumnene zabelana ukuphatha okubalulekile kumakhasini athengisiwe ngokukhathazeka kokudluliswa kwe-polyurethane okungasivimba umugqa womakhasi noma kudinga izindlela ezikhiqiziweyo zokucwasa. Ifulemhi esekelwe yezimali eziphatha kakhulu isebenzisa njengephanga kusivimba kwesayensi kanye nokusebentisa komugqa ngemisebenzi yokunika.

Ukuncipiswa kokudinga kokuphatha umakhasi kukhishwa ukusebenzisa ngokuvamile izimali ezifanelekileyo ezingakhathazi ibumba lomsebenzi olodwa futhi zilapha ukudinga okusheshayo kokucwashwa noma ukulungisa umugqa. Lokhu kuphatha kusondeza ubude bomakhasi bese kunciphisa izindleko zokufaka futhi kuyakhula amandla okunika nezigaba zenhloso.

Ukutholakala kwegcebo lokulunga kwezinhlelo eziphathelene ngezibonelo zokukhupha kusivumela ukuthi izimbono zemold zilindele ngaphandle kokuthi zibe yisimo eside ngegcebo yokukhupha. Lokhu kukhupha kuvikela ukuciphisa, ukuchithwa kwesayizi, noma zenzo ezinye zokohlwa okungakhetha imvume yemold noma kudinga izilungiso ezinzima noma ukubuyiswa.

Izigaba Zokukhetha Nezimali Zokusebenza

Ukulinganisa Ukutholakala

Ukukhetha i-Pu release agent echanekileyo kudinga ukulondoloza ngokugcwele kokutholakala nokufaka kwezinhlelo eziyinxalenye ze-polyurethane, izimbono zemold, nezimo zokwakha. Ukulondoloza kokutholakala kwegcebo kusiza ekutholeni izinyathelo ezinconywayo ezikwenzeka ziyenzela ubunzima bezinto, ukusebenza kwokukhupha, noma ubomi bomfanekiso wokwenza.

Ukutholakala kwezinkinga zokugcinwa kwicala kuyisahluko esibalulekile ekukhetheni isipho sezikhalo, ngoba izici ezahlukene zingasebenzi ngendlela eyahlukene ngaphansi kwezimo ezihlukene. Abayenzelwa kufanele bahlawule bothekwabo okuphumelelayo ekuqashini kuka-polyurethane nokulinganiso kwezimo zangaphandle kwemfundo yabo xa bahlwayela izinketho zezipho zesikhalo.

Ukubaluleka kokusebenza kufaka phakathi izici ezifana nokusetshenziswa komthwalo, izidingo zokufaka, nezikhathi zokufaka futhi ezidinga ukuthi zilandelane nembhalo etholakalayo yokwenza. Izipho zesikhalo ezintfotha kahle emhlabathini wokwakha etholakalayo zinika imiphumo engaphezu kwezinye ezingadinga ubuchwepheshe obukhulu noma izixhobo ezithunyelweyo.

Izindlela Zokuhlola Ukusebenza

Ukufaka izikhathi zokusebenza kwe-PU yokuvikela ukuthembeka kufaka ukuthuthukisa izimiso zokuchaza ephathelene ngqo nezimo zokwakha kanye nezidingo. Lezi zimiso kumele zifaka ukubala kokuthembeka, ubumfihlo bomjiko, ubuncane bezinga, kanye nokulindile kakhulu emva kwezikhathi eziningi zokwakha.

Izindlela zokuphawula okubalwa kuzivikela abayika ukulinganisa ngokwayo iziphi na izinhlelo zokuvikela futhi bakhethe izinto ezinikeza isebenza esihle kunezidingo zabo. Izinkinga ezithi: inani lokuthembeka, ubunjini bomjiko, kanye nobuncane bezilinganiso bekunika idatha eyodwa ekusebenziselwa ekunqumeni.

Ukubala okude kuhlinza izidingo ezithi: ukugcinwa kwesikhathi eside, isebenza sokuthenga, kanye nesifo sokusebenza emva kwezikhathi ezide zokwakha. Lokhu kubala okuphelele kusincoma ukuthi izivikelo ezikhethiwe ziphila zisebenza ngokushesha ngemva kwezikhathi zokugcina kanye nokusetshenziswa.

Okusebenziswayo Okuphucansi Kanti Ngezinhlelo Zomlando

Izinhlanzi Ze-Foam Ezispecialiswe

Ukuzalwa kwezinhlanzi zomthwalo we-polyurethane ezigunyazwe usebenziswa ekugcineni izihlathi, ukulwa kwezulu, nokusebenzisa kwedokotela kwalapha kudala ububi bezindlela zokuphazanyiswa kwePU ezingcono ngemiphihlo yasebenza. Lezi zisebenziso ziyadinga izindlela zokuphazanyiswa ezingcono ezifakiwe imithetho ethile futhi zenze kahle ngokulinganiselwe.

Izisebenziso ezinemphefumulo yokwenza izinhlanzi kungafuneka ziphazanye nezici ezifinyezwayo njengezici ze-antistatic, ukuthuthukisa okuningi kokuthuthukisa, noma izici ezithile zezinkuni ezenza kube lula ukusebenzisa noma ukubopha. Ukufunda lezi zidingo zinezici kusiza abakhi kakhulu ekukhetheni izisombululo zokuphazanyiswa eziyisichazamchazam.

Ukuzimiswa kwezinsiza zempilo kakhulu kuthatha indlela ekhethwa ngayo izimo ezinikezela ukuthi izakhiwo zilungise izimo ezingavamile zokuphazanyiswa kwegesi, ngelikusindisa izimo zokusebenza. Izimo ezisekelwe yamani nezimali-z-OC engaphansi zinika izinketho eziphathelene nempilo ngaphandle kokulahleka kweqiniso leproduksi noma ubunzima bempilo.

Ukuxhumiwa kwezinhlelo yokusebenza kanye nokuvuleka

Izithuthi zamandla okwakha zamanje ziphatha kakhulu izinhlelo zokunikezela izimo ezifakwayo ezothuthukisa eziyadinga izakhiwo ezibaluleke kakhulu ukuze zisebenze kahle emshineni wokuzothuthuka. Lezi zinhlelo zidinga izimo zokuthembeka ezinezimo ezihlakaniphile zokudluliswa nezisebenza kahle phakathi kweminyaka yohlelo lokunikezela.

Izinkulungwane zokugcina ubuchwepheshe kuvumela ukulinganisa ngempela imsebenzi yomsebenzisi wokukhupha, kuvumela izimali ukulungiselela izimo zokusebenzisa bese bakwazi izinkinga ezingaphakathi ngaphambi kokuba zihlobane ngekwalithi yezinto. Ukudibanisa nezinhlelo zokwenza izinto kunciphisa ukulandelela kwemisebenzi yokusebenzisa nokulinganisa imiphumo.

Iindlela ezibhekene nokulunga kwezinto zisebenzisa idatha ekutholakala kumgcini umsebenzi wokukhupha ukuze kulungiswe izimpawu zokusebenzisa futhi ukuvikela ukuthintana kwezemfundo. Le ndlela ethembekile iyasesiza izimali ukugcina ikwalithi efanayo ngelinye ihluka lezindleko zokusebenzisa umsebenzisi wokukhupha.

Imibuzo Evame Ukubuzwa

Ukuthini okubangelwa kwi-PU release agent kumkhiqizo wokuphuma kwegesi?

Isisekelo sangempuma sokugcina siyaphazanyiswa kakhulu ngu-agent yokukhupha PU ngokuthi kungenza kanjani isimo sezinkawu, ubukhulu, nokubonakala ngokujwayelekile. Izimboni ezinhle zezisisekelo zokukhupha zibangela izinkawu eziqhubekayo, ezingenanto, ezingadingi ukusebenziswa kwengqondo futhi zibuyisela ubukhulu obuncane. Izisisekelo ezimbi noma ezisetshenziswa ngendlela engavumelekile zingathola inhambo, ukuhlukana kwebukhulu, nezinkinga zokudluliswa okungumgangatho okungapheleli nokubonakala.

Kuzomfanekiso owufuneka ukuzihlinzela lapho ukhetha isisekelo sangempuma sokugcina

Izinto ezikhethekayo kumele zihlanganise ukuthi kuyafani kanjani nokuchazwa okuthile kwe-polyurethane, izidingo zokusebenza kwesithakazelo, ukuthi kufane nawe ngolwazi lomoldi, nezidingo zedalwini. Abayenzelaphasi kumele babeke izindlela zokusebenzisa, izilinganiso zobunjalo, izikhathi zokubuyisela, nezidingo eziphathelene nokusebenza njengekufa noma iziprofethi zehlangothi. Ukuhlaziywa ngeminyaka yezimali yokwakha kunciphisa umnqamuzi wokukhetha.

Kuthini isikhathi esifunekayo sokubuyisela u-Pu release agent ngemuva kokwakha?

Ukuphindekwa kwezilingo kubangelwa ngeminyaka engaphezu kokuqeqeshwa kwesilingo, ubude bezilingo, imoto yezilingo, kanye nendimana yomfanekiso. Isilingo esikhokhelwayo sikhokhela kakhulu emaphakethini amaningi, okuphindekwa kufuneka kuqashelwe phansi kuye ngaphakathi kwezikhashi ezingu-10-50 ngokwesimo. Ukulandela isebenza sabukuqa kanye nokalula izivumelwano zokuphindela ukusebenzisa ngokuthi kugcineke kakhulu kusizo lwezimali.

Kungani ukukhetha kwezilingo ze-PU kusinike umthelela kuzimali zokwakha

Yebo, ukukhetha kwe-Pu inkcazelo yesabelo ikhathazekile kakhulu ekhwalipheni kwemisebenzi ngokuthi kuthinta izikhathi zokuphatha, izidingo zokulungisa iimoldi, ubunzima bomkhiqizo, kunye nokunciphisa inkunkuma. Iinkcukacha ezilungileyo zinokuba zineengxaki eziphakade kodwa zanokuba zihla ngaphezulu ngenxa yokwenza kakhulu imisebenzi, ukunciphisa kwezigigijelo, ukudlula kwezinto zomgibeli, kunye nokunciphisa kwezidingo zokulungisa. Kufuneka ukuchazwa okubanzi kukhangeleke konke oku kungekhangele kuphela ingxaki yokuza kuthenga.