IMethylene diphenyl diisocyanate, okanye MDI, ingxelo elisekisiyo kakhulu elihlukile ngokwesintsho. Ingcazeleyo yahlukileyo kunye nomsebenzi wakhe nguqoqweni lwezinto ezilandelwayo lokuhlala kwiimfo esincane ezinamandla ezaziwa njalo polyurethane foam. Imfo leyi yiingxenye zokugcina imikhiqizo yesikhuthazelo esizenzelayo ukusetyenziswa kwindawo ezinikezelayo ezinikezisayo ngesikhathi sonyaka. Ukufunda ukuba ngubani i-MDI kunye nokusebenza kwakhe kuhlanganisa ukuba uhlale kuyona ngokuphathelana neentsono eziningi.
UMethylene diphenyl diisocyanate ungenziwa njenge-chemical, akukho indlela efanayo kodwa amabini amahluke amachemical amadifanekiso. Zibonakalisa njenge-diphenylmethane diisocyanate kunye nepolymeric MDI. Uma uzama ukulanda amabini amachemical ngaphandle kwezinye, uzoba umethylene diphenyl diisocyanate, liquide elingangqangiyo kunye nemva wobunxele. Akukho lokhu olungaba liquide leyi yi very useful lokuhlola ukuba ipolyurethane foam. Ipolyurethane foam iyinkqubo enye yokuziphindaphinda eyayisebenzisanga kumiliyoni emasemeni angaphakathi komntu, amabhodi, amatré, kunye nokuphucuka kwindawo.
Sanying silikon polyether ngumveliso omphumeleyo kuhlanganiswa komhlaba lepolyurethane foam. MDI, inhlanganiswa noma amacala anganye, njengepolyols kunye nezinyathelo, zikhutheza kunye ziphinda ukufika nokulula ifoam. Lefoam ayiqhelekanga lokuphambili; ingqayi, inesithombo kunye nokusavuma ukudibanisa. Ngoko ke, lingakwazi ukuba uhlale kanye nokubuyekeza ngemibono engaphezulu. Ngokuvamile, ulihlala kwiimbali ezininzi — kusukela izindlu ezincongca edolobheni kucomponyenti eziphambili zomshini. Ukungenziwa kwesinye isimo sokuqhuma i-foam yakhiwo ngaphandle kokuba kune-MDI, uzoba kudinga umoya omkhulu okuhlukene ukwenza ukuthi i-Polyurethane foam iphumeleleyo lokunikezela izindlela eziningi zezindawo.
Xa uvulekile kweSANYING 1 naphthyl isocyanate , ukuhlala ngemva kwezinto ezikhulu zokubusa. Kunezicatshulwa eziningi ezifanele uziwe ngaphandle kokuthi ube usizo ngezinye nezintathu. Izinto ezinzenzayo ukuba uzisebenzise amaxesha omphumeleyo njengamanje, amagwesini namasheke. Izinto zakho zizihlola ukuba azikopisele ngamandla yezinto ezifana nokugcina. Ngakho xa ungene kusekwiqhakamsele eliphakamisile okanye umoya omphumeleyo wenza ukuba ungakwazi ukususa izithelo eziziqhamo. Uya kufuneka uze ngaphandle kokuhamba ngokuyenza imibuzo eziphakeme xa udipumele MDI
UMDI uyahlukile kwindawo elikhulu lokuhlola, ngokuphezulu ngenqanawa okanye nezinye izinto zokugcina isipho. Oku kungenani amagama ababili labamathathu elibizwa njengamanje alonakala akhona ukuba zihlola ngokubanzi: uzakwenza ukulandela umpho wemithombo, okungaba ukuze uthole amaphu athi awunamandla; uzakwenza ukufa amaxhobo, okungaba ukuze akwazi ukubhala ngokukhombisa; okanye uzakwenza ukufa i-rekshiyoni, okungaba ukuze ziqale amaninzi okanye amakhulu elilandelayo elilandelanga ukusetyenziswa kwezinye izinto ezilandelayo. Hlobise amahazo amaningi apha kunye nokuhamba kumazwi omkhulu ukusebenzisa MDI kulesi siseko. Ngoku kuziphumelela: shiya amagogotyana akho kakhulu futhi shintsha imigomo yezindlovu yokugcina emva kokushintsha MDI.
Kodwa namhlanje, kube londawo oluningi lomncedisi olushesha kunye nenkinga eyafuneka kuSANYING utoxikiti wewadi edayini ukusebenzisa kwiindlela ezidingeki lweendawo. Iindawo zokubona zikhululekile; ukuyenza nokuthetha ngokugcinwa kwamandla amahhovu aphaqathi we-MDI ephakamisayo isiphumo esibonakalisiyo. Amatekonoloji amahlukile angaphambili ukuze aphumelelwe ukuphakamiswa kokuthi i-MDI ayiqhubekanga nge-isosanekhate, lokunyelelwa ukuthi uphakamiswa kokwemali wamahhovu angayiphathekeleyo ngokungasebenza — into engazange asetyenziswa ukukholela ukuba umsebenzi ungaba ubukhulu obuhle ekwesonto. Izimpendulo zakho zihluke kakhulu ngoba zingabuyeleya i-MDI ngamanye amandla ukusuke kube kudingeka ngokushesha kwindawo ezininzi zokusebenza, ukuba izifundo zisebenze amaxwebhu okungenani kodwa abantu ababangene nenkasa yezilimo.
