Thenga Isimemezelo se-Polyurethane PU Elastomer - Isisindo esiphathelene sokucofa isikhumba

Zonke Izigaba

cula umshado wesiPU we-polyurethane

Xa ubhengeza umthusi opholile polyurethane pu, ubhengezisa isicelo esithuthukile sokugcina esenzelwe ukwakha kakhulu ekususa kakhulu kwezinhlayiya zokupholile ezizulazulwe ku-molds nezixweba zokwakha. Lolu cwaningo olubaluleke kulokusebenza lusebenza njengomshini phakathi kwezinhlayiya zokupholile nemaphoyila, ukuvikela ukudluliswa okungafuneki ngexesha lokuzulazula. Umthusi wokuphosa polyurethane pu uphosa ngendlela eyisiseko sechemistry yehhepo, wenza igumbi elincinci eliqinileyo eliphazanya ixesha lehhepo kwaye livale ukudlala ngaphandle kokuchaphazela ubume bezimpendulo. Izifundo ezintsha ziphatha izinto eziphathelene no-silicone, fluoropolymers, okanye izixhobo ezithile zobumba obuphucu ezinika imfundo eqinileyo phantsi kwemilinganiso yamandla nasekugqibeleni kwemisebenzi yokwakha. Le mithombo inika ubume obugqibeleleyo bokuchaphazela, ibuyisela inkqubo yakhe ngaphandle kokuba ikhokele kakhulu kwizikhala ezikhokeleyo eziphumelelayo eziphumeleleyo kumthombo wezinhlayiya. Umthusi wokuphosa polyurethane pu unika ubume obuhle bechemical resistance, uqinisekisa ukulingana nokubikezela kwezinye i-polyurethane indlela eziquka i-MDI-based, i-TDI-based, kunye neepoloyola. Iindlela zokusebenzisa kusebenza kwiindawo ezahlukeneyo zezimoto, iigasket ezindalo, iiseyile, iiroliwe, kunye nezimpande ezithile zezinhlayiya apho ubume obucophele bokulingana nobume behhepo bubaluleke kakhulu. Ubuncinci bomoya wokuphosha kwegesi engachaphazekiwo kubantu kwenzeke kube yinxalenye yesiko ngelishumi elide, kwaye libuyekele iistandaadhi ezibukekayo zokuphatheka kwisimo somsebenzi. Izigaba ezininzi zokusebenzisa zinika izindlela ezahlukeneyo zokusebenzisa kuxhomekeke kwiindlela ezahlukeneyo zokusebenza kunye neengxaki zokubhengezela. Umthusi wokuphosa polyurethane pu uphazanya ixesha elingekhokelekanga ngokuphuma komsebenzi ngokuphuma kwezixhobo zokuphuma okungcolile okunokondiza iimoldi ezobomi. Inkqubo yakhe eqinileyo ibuyisela amagama abalulekile emva kokutshintshwa kwezinye izikhala zokwakha, enyanisela ekuphazanyeni kwezimali zokwakha kunye nokunciphisa kwezinto ezihlakelwe.

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Ukuthenga kohlelo lokuphulula okubandakanyayo ku-polyurethane pu elastomer kuphatha izindleko ezinkulu ngokuhlengahlenga izikhathi zokupheliswa kwezimali futhi kuzivikela ukuthi kudingeka ukulungisa imimandla engcono ekwakhiwa yizindleko eziphakeme ezakhiwa yiindlela ezibangela ukususa izinto. Izisebenzo zokwakha zithola ukuqina kakhulu ngokushesha njengoba izinto ziphulula ngaphandle kwezinkinga ngokokuqala, zihlukumeza izindlela zokususa ngendlela ethintelene ngesandla ezihlatshelwa izikhathi futhi zihlanze izinhlangano zokwakha. Ukusebenza kwehlangothi kwehlelo kumkhonza ukuvikela imimandla ukuthi kungabi nomdanga wokugcina owathakathaka uma abasebenzi baya kusebenzisa izixhumanisi zomlando noma ukunqamuka ukuze basuse izinto ezilahlekile. Kukhona izimpawu zokuhleleka kwisimo sokukhokha kuzo zonke izinto ezakhiweyo, kanti kube khona isilinganiso esingaphansi sokucindezelwa nokulungiswa kwazinga okuphazinywa izindleko. Uhlelo lokuphulula okuthengiwe ku-polyurethane pu elastomer lukhula ubude bebuso bommandla ngokukhuselela amaso akho ukuthi angapholakali ngokugcina noma ngokwenza umsebenzi omubi wokudonsa okwenzeka xa kuyadingeka ukususa izinto. Abasebenzi bafaniya ngezimo ezihlonipheka kakhulu ngoba uhlelo luvikela izindlela ezihlukumezayo zokususa ngendlela ethintelene ngesandla ezinokuthi zibangela ukulahlekelwa ngamathuluzi ahlebayo noma ngokusetshenziswa kwezimali ezinkulu. Kunezimpawu zezenzo ezingcono njengekuthulaswa kwezindleko ezithile kususwa izinto ezilahlekile futhi ukusetshenziswa okuncane kweziqu kulingana nezindlela ezinye zokususa. Ukwahlukana kwehlelo ngezinhlelo zokufakwa okuzimeleyo kumenza ukuthi kuthole indlela efanayo futhi kuhlengahlenga izindleko zomsebenzi okutholakala ekufakeni ngendlela ethintelene ngesandla. Ukusabela kwezimali kuthembeka kangakanani uma uhlelo lokuphulula okuthengiwe ku-polyurethane pu elastomer lukhomba ukuthi izinto ziphulule ngempilo, likhomba abakhiwa ukuthi bafanele amandla okugcina ngaphandle kwezidingo ezingavamile. Izinga lezindleko eliphansi libe khona njengoba imimandla inezidingo ezingaphansi kakhulu yokulungiswa futhi ukulungiswa kwesimo somphakathi. Ubude bebhedi bempilo yehlelo futhi i-formulations ezinezindleko ezinkulu zihlengahlenga izindleko zokugcina izicelo zokugcina futhi zihlengahlenga ukutholakala kwezimali zokwakha. Iziphawu zokstabile kwe-temperature zivumela ukusetshenziswa kuyo phakathi kwezinguquko zezono futhi phakathi kwezisebenzo ezihluke-hluke ngaphandle kokuthi kuthatheke ukusebenza. Izikhathi eziningi zokuphulula kusuka kufakwa okukodwa zihlengahlenga ukusetshenziswa kwezinto futhi izidingo zomsebenzi okuthi kufakwe kabusha. Iziphawu ezinemvelo zehlelo lokuphulula okuthengiwe ku-polyurethane pu elastomer zivikela ukuthi izinto ezibalwayo azizange zibuthakathaleki, zihluphele izinhlelo zokwakha ezihloniphekile futhi zihluphele izidingo zokuthulaswa kwezindleko.

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cula umshado wesiPU we-polyurethane

umthengi wokuvalwa polyurethane pu elastomer

umthengi wophrofilo lwePU elastomer

umthengi wokulayisha we-polyurethane elastomers

umphumelelo weElastomer lasePU kwisezulwini lesibhayisihali

umshado wokubhetheka kwezintsha ezindlela zokugcina amabhabha

umphumelelo weElastomer lemicrocellular lasePU

Ukuphepha Kweviki Ekhethekile Nokwakha Kwezulu

I-agent yokukhupha kuphathelene ku-polyurethane pu elastomer enika ukuphatha kakhulu ngokusebenzisa ubuchwepheshe obuthuthukisiwe obukhokha ukudaniswa kwegesi phakathi kwezinto ze-elastomer neziganeko zamakhiwa. Lomthetho wokuphatha usebenza ekugcineni komoya, wakha isihluku esingavumeli okuqhubeka kwemodi kanye nokuphatha kwazo zonke izikhathi ezigcinile zokwakha. Izisekelo ezakhela imali kuze kube yizindlela zobuchwepheshe bezifundiswa futhi zibonakala izinkinga eziphazanyayo zokubuyisela imodi, njengoko isihluku sokuphatha sikhokha ukuchithwa kwegesi, ukulahlwa kweziganeko, nokudamageka kokusebenza okuhlanganisa okuhlukahlukene xa kususwa izinto ngendlela ephikisanayo. Isakhiwo sesinikezelo se- agent sekungezwe izinhlelo ezivikela iziganeko zemetali ukuhlangulelwa nokuthintwa kwegesi, okungaba khona kakhulu uma kusebenziswa emanzini amandla noma xa kusekelwa izinkampani ezithintwayo ze-polyurethane. Ukuguquguquka kwesitayela, okunjalo emsebenzini we-elastomer, kwenza uhlu lwesitayela okungaba yindumba yomodi engavunyelwa, kodwa ukuzimisela kwebhodi yesitayela ye-buy polyurethane pu elastomer release agent kugcina ukuphatha kwezidingo zonke. Akukho mlando owodwa ongakushiyi umlando wokuphatha kwezimali kanti imodi ingcono inquma imali enkulu etholakeleyo eyafuna ukuthuthukisa ngokuphatha nokuvikela. Ukusebenzisa kahle kwebhodi yobuchwepheshe bezifundiswa kususa into yokufaka kabusha imodi kangangokusheshayo, kunciphisa isikhathi esingavunyelwa kuzisekelo nokuthinta kwezimali zokuvikela. Ukungaphandle kwesimilo se- agent kakhokha ukuxhasana nezimo zemodi, ugcine ukucindezelwa kwezilinganiso kanye nokuphatha kwazo zonke izikhathi zokwakha. Umgcipheko wesiganeko uphatha kakhulu njengoba isihluku sokuphatha sikhokha ukudamageka okucinga okuphansi kweziganeko okuthatha isikhathi futhi kuthinta kakhulu igunya lesiprodiyu. Abasebenzi bathola ukuphakama kwezimali kwezimali zokusebenza kwezimali zokusebenza kwezimali zokusebenza kwezimali zokusebenza kwezimali zokusebenza kwezimali zokusebenza kwezimali zokusebenza kwezimali zokusebenza kwezimali zokusebenza kwezimali zokusebenza kwezimali zokusebenza kwezimali zokusebenza kwezimali zokusebenza kwezimali zokusebenza kwezimali zokusebenza kwezimali zokusebenza kwezimali zokusebenza kwezimali zokusebenza kwezimali zokusebenza kwezimali zokusebenza kwezimali zokusebenza kwezimali zokusebenza kwezimali zokusebenza kwezimali zokusebenza kwezimali zokusebenza kwezimali zokusebenza kwezimali zokusebenza kwezimali zokusebenza kwezimali zokusebenza kwezimali zokusebenza kwezimali zokusebenza kwezimali zokusebenza kwezimali zokusebenza kwezimali zokusebenza kwezimali zokusebenza kwezimali zokusebenza kwezimali zokusebenza kwezimali zokusebenza kwezimali zokusebenza kwezimali zokusebenza kwezimali zokusebenza kwezimali zokusebenza kwezimali zokusebenza kwezimali zokusebenza kwezimali zokusebenza kwezimali zokusebenza kwezimali zokusebenza kwezimali zokusebenza kwezimali zokusebenza kwezimali zokusebenza k......

Ukuzenhlela Kwezenzo Yento Nokuncipha Kwesikhathi Somthetho

Ukuthuthukisa kokwenza kuyisiphumo esikhulu esingaqondwa ngokushesha uma izikhalo ziyathenga isisekelo sangaphandle se-polyurethane pu ukulawula izinto ezenziwa. Ukuncipha kwesikhathi sikati kwezimali ezingu-20-40% sitholakala kangako, njengoba izinxenye zilawulwa ngaphandle kohlelo olunikelwa ngumsebenzisi, okungasivimba umlando wokusebenza lapho abasebenzisi bahlupha nezinkinga zezinxenye ezihluphekileyo. Ukusebenzisa ngokushesha nokusala kwasenkilima kweyagenthi kunciphisa isikhathi sokulungelela phakathi kwezimali, kube lunye ulawulo olunakekayo olunamandla kakhulu ekusetyenzisweni kwezixhobo. Izindlela zokwakhiwa ezenziwa ngomthwalo bezimali zifana ngokubanzi ngenhloso yokulawula izinto ngendlela ethembekileyo, ngempela izinhlelo ze-robotic zingathola izinxenye ngaphandle kwezinkinga zokulungiswa izimo ezahlukene. I-agenthi yethembeko le-yagenthi elibuyiselwe ngokuchanekileyo iyakha izinhlelo zokwakhiwa ezingcono ngokuthintana nezinkinga zezinxenye ezivalelwe kanye nezisebenzo zokulungiswa. Umgomo wobubi buhle buyakhazimula ngokushesha uma izimo zokulawula zilindelwe njengezimali, okunciphisa ukwahlukana kwezibalo okuzama ukulawula ulawulo kanye nokuthandwa komkhakha. Kukhona ukuthuthukisa kwezimali uma abasebenzisi abagqimiwe bakhathalela izisebenzo ezinengqondo kunokulungiswa kwezinkinga zezinxenye ezihluphekileyo noma ukwenza izinyathelo zokukhupha ngendlela eyodwa. Ukubaluleka kwe-agenthi ngezindlela ezahlukene zokusebenzisa kuvumela ukuthuthukisa izidingo zokwakhiwa, ngaphandle kwezimali eziphakeme zezixhobo zokudonsa noma izixhobo zokubhisha ezincanyiweyo kuma-geometries ahlukeneyo. Inani elikhulu lokulawula lisuka ku-application eyodwa engaba yilokulawula kakhulu kumazwe amaningi okwakhiwa, okunciphisa ukusetshenziswa kwezinto kanye nesikhathi sokusebenzisa. Ukhlathiywa kwezimali kuthuthukisa uma izimo zokulawula zilindelwe, kube khona imvume ukuze abayeni bavumele izinkathazo ngokuthemba. Isisekelo sangaphandle se-polyurethane pu singancipha izinkinga ezingasheshi zokwakhiwa lapho izindlela ezinje zihluleka, okususa izinhlelo zokwakhiwa ezingcono kakhulu. Izikhathi zokulungiswa kuzothunyelwa ngapriori kunokuthunyelwa ngokushesha, ngoba izimo ezilindelwayo zokulawula zizivimba izishuthelezeli ezingcono kakhulu ukukhupha izinxenye ezihluphekileyo. Umphumo wokusebenza kwezixhobo ungabuye ngaphezu kakhulu uma izisekelo zangaphandle zisebenza ngendlela ethembekileyo, okuhlanganisa ngokugcwele ekukhethweni kwebaviyo kanye nokuthuthukisa kwebaviyo emakhathini aphathelene kakhulu.

Ukuthuthukisa Kwezinkinga Zezibopho Nezilinganiso Ezinhle Zokusebenzisa

Ukuthenga kwe-polyurethane pu elastomer ukulawula umsebenzi othile okhulu kuzo zonke izimo zokwenza i-polyurethane elastomer, kube yisiphetho esihle kuzindlela zokwakha ezahlukene. Lokhu kusuke kumigqa yesimo esihlenzele ngempela ehlala isimo sokugcina chemically futhi ngenjalo ihlinzeka ngemisebenzi yokulawula kwi-MDI-based systems, i-TDI formulations, i-polyester polyols, i-polyether polyols, nezinye iziqhamo ezithile ezigcinwa khona kakhulu ekwenzekweni kwe-elastomer. Abawekwa abasebenzisa izinhlobo ezahlukene zezinto bafuna ukulawula izimpahla zokulawula ezenza kanjalo kuzo zonke izimo zezimpahla, ukuchazela ukuhlelwa kwesitokhu nokuncipha izidingo zokfunda kubantu abasebenza. Izici zesimo zomkhuba zokulawula zenzela ukuthi kungaphunyuki imisebenzi yokucindezela, ukuqinisekisa ukuthi izici ze-elastomer zifanele izimiso ngaphandle kokulahleka kwezici zomkhuba njenge-tensile strength, ukuphindeka, noma ubukhulu. Ukufanakala kuyekelwa kuzo zonke izimo zokulunga, kanye nezinothongo, amehlo amanzi, nezinye izici ezibophephayo ezingcinwa khona kakhulu kuzo zonke izimo zokucindezela. Umsebenzi we-agent uwukhona kuzinkinga ezahlukene kusukela emsulweni wempilo kuya kuzinkinga ezikhulu ezintweni eziphindwe kangaka kune-200°F, ukuvikela izidingo zokwakha nezinkinga ezahlukene zezikhala. Iziphetho ezivalelwe ngamathambo neziphetho ezivalelwe ngamanzi zinikeza izinketho kwezikhala ezingenazo izidingo ezithile zomoya noma obubi, futhi ngenjalo zilondoloze izici zomsebenzi wokulawula. Umsebenzi uyasebenza kahle kwe-rigid ne-flexible polyurethane systems, ukuvikela abawekwa abawenza izinto ezahlukene kugcineni elinye. Iziphetho ezifanele kwe-foam ehlinzeka ngokulawula ngaphandle kokuthinta ukudala kwe-cellular structure kwi-microcellular elastomers. Izici zokugcina kwezitokhu zivikela ukuhlelwa kwezitokhu ngokudala, ukuvikela ukuthenga okuhle nokulawula izindleko. Ubunzima bomsebenzi buhlanganisa ukusayina, ukushayisha, ukulayisha, nokudonsa, ukuvikela izilinganiso ezahlukene zokwakha nezimodi zezixhobo. Umfanekiso wokufanakala ka-buy polyurethane pu elastomer release agent okhulu kuncipha izidingo zokuthenga kwezimpahla ezithile eziningi, ukuchazela izisekelo futhi ukuqinisekisa umsebenzi ohlelekile kuzo zonke izisekelo zokwakha.