Lamanye amaxhobo aphantsi akhona amaxhobo okuningi amahhululekileyo. Ngokushesha kubo kakhulu, lemaxhobo alandelwe ngokuphakamisela kwiimbuzo yamaninzi. Ukusuka komkhakha wesikolo, siza kwenza isimo esiyaziyo ngokubanzi ngeMannich polyols njengezinye zabo, ukuze siyaceliswa, izicatshululo, izindlela zocula kunye nokuthi zingabonisa ngokwesiphi.
Bengxantyo bezinto eziqondileyo ezininzi eluhlola ukuba zityho labaMannich polyols. Izityho zakho zisebenziswe ngeminyaka eyahlukileyo kwiindawo ezimbini neziqhamuka kakhulu kuhlanganiswa kwezinto ezinikezayo ezilungiselelweni lokuxhasa olunye uhlangothi. Zibekwa ngokusebenza ngeprogramu zokugcina amaxhobo ombi. Umsululi wabo yityho enkulu elihlobene nesigaba esingabonakaliyo esifuna ukuba kusuke kusenzisele. The polyol kunye no-isocyanate bafuneka babuyele ifomula yokuba zizizo ezidingekayo, okuningi kunye nokuthi ngoku bafuneka babuyele ngokwesikhatsi sokuqala sokuphela. Ukubuyeleka kweMannich polyols nguqukuze lwayo kulandelayo kumlingane ngesithathu esidinga amaxhobo amaningi.
Isistruktura sesintsho lesiMannich polyols sifuneka siyahlukile ngokuqalekele, kodwa sibonisa isiqephu semva kokuba ususebenzise. Ingenziwe ngamathathu amaphumela okulandelwayo okuhlukeleyo ngephenol, nesilondolozo kanye neamine. Isicelo esincinci amathathu amaphumela lokungena lezi zinto ziyaziwa njengeMannich reaction. Leli ncamo seliphakeme kakhulu ngoba isintsho lesiSANYING polyol sifuneka sizive leyiphi imithombo ezidingiswayo yokusetyenziswa. Ngokushesha, umlingane wamathathu amaphumela amadalu angena amanani amandla weMannich polyols. Zihlala zikhona ngokupheleleyo kwiimbhokisi ezininzi eziphumeleyo ukwenza izinto eziningi ngokuba zizama ukuhlawula amanani amandla.
I-Mannich polyols zisebenzeka ngakubani kwi-industri yasezivakalisi. Kodwa zingabafundiswa ngokuphambili ukuvula i-polyurethanes, isimo esidingi lweplastik esedluliswayo kwindawo efanekayo kwezinto. I-polyurethane, ngokushesha, akwaziwa kwi-mebuleko, amasithi wemoto, kunye nokucacisa ngezinye izinto ezinomsindo. I-Mannich polyols zifundiswa ukuvula amandla, ukuhlola kunye nokulayisha. Njengoko polyol isocyanate izimateri aliwandelwe kwindawo ekugcinwayo, ubuchwephesha babo besebelelanga (ukusebenza komoto), ukubhedla (ukubambo) kunye nokusebenzela (amasiko nomphumende). Ukupolimerizwa kwesi-Mannich polyols yinto enguqukethwe njenge-chemistry, ayiphi ingxenye yokuba lokhu liqondile kunye nokuba liyindlela elikhulu kunye nokufuneka kwisezintsha, lokhu kuhluke kumlingane apho azilayishe amathamathanga.
Ii-Mannich polyols zisebenzakalisa ukuba iipolyurethane ngoko ebalawa kakhulu ukuba ezinezithandekileyo. Lokhu lihluke kakhulu ngoba ligcina ukulanda ukuba amagcinisi ayilandelise amaninzi okanye amaphroduct aqhelekileyo. Ngokushesha, bazo buza into engenayo indlela yokugcina nokuthi yinto engeyiyo noma yinto engaqhelekanga. Ii-Mannich polyols zizibona umthombo omkhulu kunye neentsha, okungcono emva kokuba le nto azofunywa ngamandla kweentsha endaweni yokuba imveliso yakho uzoyibonisa ngendawo yokuba imveliso yakho uzoyibonisa ngendawo. Futhi, ii-Mannich polyols ze-SANYING zikhoyo ngokupheleleyo. Lokhu kuhlukile ukuba angabhedele kakhulu futhi akusetyenziswa ngokuqinisekileyo, ukuze amaninzi amaphroduct amade aqale ukusebenza ngokubona kakhulu. Ukulinganisana kwii-polyurethane nguMannich polyol lilinganisana ngokuba kuhlukile ukuba amaninzi amaphroduct azosebenza ngokubona kakhulu kwiinkcukacha.
Izilungiselelo zethu zithi ukuba ipololi leMannich inakho iindlela ezibuyisayo, kunye neziqondiso ezintsha ezizaziwa ngokubanzi ngezazisa izindaba zemfundo nokulungiselela. Izindlela ezintsha ezahlukileyo kuthathwa ngazo abantombazane kunye nabafundi. Le ndawo ingezantsi kuhlala, kunye nepololi leMannich izobenjini phambili lokuthola lokuhlola. ifomu yesi polyurethane esikhulu izixhobo ezintsha zakhiwo amaninzi amaphandle kwesikolo. Leli ntolwana elingezantsi kuhlala kunye nepololi leMannich izobenjani phambili lokuthola lokuhlola. Ngoku kulandelayo pololi leMannich zihlukile ukuthi zikhona indlela ezifanayo kunye neziqondiso ezizange ziqedwe. Ngenxa yalokho pololi leMannich zihamba ngomoya wendlela yokuthi ziqukethe umoya omuhle.
