Njengoba kuqhubeka ukwanda kwesidingo sezithasiselo ezisebenzayo, ezinobungani nemvelo kanye nokusebenza kahle embonini yezinto ezintsha ezifana ne-polyurethane kanye ne-epoxy resin,i-dimethyl thio-toluene diamine(DMTDA, inombolo ye-CAS: 106264-79-3) kancane kancane ibe yimbangela eyinhloko yokuthuthukiswa kwemboni ngenxa yezici zayo zomkhiqizo ezihlukile kanye nezimo zokusetshenziswa ezibanzi. Njengohlobo olusha lwe-aromatic diamine curing agent kanye ne-chain extender, i-DMTDA ithatha indawo kancane kancane ye-solid curing agents zendabuko. I-Dimethyl thio-toluene diamine isetshenziswe ngezinga elikhulu emikhakheni eminingi efana nezimoto, ukwakhiwa, i-cold chain, kanye ne-anti-corrosion, okukhuthaza imboni ukuthi iguqukele ekuthuthukisweni okune-carbon ephansi, ukusebenza kahle okuphezulu kanye nentuthuko ephezulu.
Izici ze-dimethyl thio-toluene diamine (DMTDA)
Izinzuzo eziyinhloko zeI-Dimethyl thio-toluene diamine (DMTDA)ivela empahleni yayo ebonakalayo yokuba sesimweni soketshezi ekushiseni kwegumbi kanye nokusebenza kwayo okuhle kakhulu kwamakhemikhali. Uma kuqhathaniswa ne-ejenti yokwelapha eqinile yendabuko i-MOCA, lo mkhiqizo ungapompelwa ngqo futhi usetshenziswe ngaphandle kokushisa. Lokhu akugcini nje ngokunciphisa kakhulu ukusetshenziswa kwamandla kanye nobunzima bokusebenza enqubweni yokukhiqiza, kodwa futhi kungashintshwa ukuze kusetshenziswe izimo zokwakha ezisezingeni eliphansi lokushisa, kubhekane ngempumelelo namaphuzu obuhlungu embonini njengokwakheka kwe-ejenti yokwelapha ngesikhathi sokukhiqizwa kwasebusika kanye nokwakhiwa okungafanele.
Idatha ikhombisa ukuthi ukusabela kwe-DMTDA kuphindwe izikhathi ezingu-3.7 kune-MOCA. Ingakha ngokushesha isakhiwo se-urea esiqinile ngama-isocyanates, ithuthukise amandla okudonseka kanye namandla okudabuka kwemikhiqizo ye-elastomer ngo-20%-30%. Ku-minus 40 degrees Celsius, isagcina ukuqina kwayo okuhle kakhulu futhi ukusebenza kwayo kwe-hydrolysis kuthuthukiswa ngo-30% uma kuqhathaniswa ne-MOCA, okwenza ifaneleke ezimweni ezimbi kakhulu njengomswakama kanye namazinga okushisa aphansi.
Ukusetshenziswa kwe-dimethyl thio-toluene diamine (DMTDA)
Emkhakheni wama-elastomer e-polyurethane, i-DMTDA isibe yinto ebalulekile yokukhiqiza imikhiqizo esezingeni eliphezulu. Isetshenziswa kabanzi ezinqubweni ezifana nama-elastomer e-polyurethane, i-reaction injection molding (RIM), kanye ne-spraying polyurea (SPUA), futhi ingasetshenziswa ukukhiqiza imikhiqizo efana nama-rollers enjoloba ahambayo kakhulu, ama-casters ezimboni, ama-scraper amapayipi kawoyela, kanye nezingxenye zokumunca ukushaqeka kwezimoto. Ngenxa yamandla ayo avelele omshini kanye nokumelana nowoyela, ukumelana nokuguga, i-dimethyl thio-toluene diamine (DMTDA) ihlangabezana nezidingo eziqinile zokukhiqiza imishini kanye nemboni yezimoto ukuze izingxenye zihlale isikhathi eside. Ikakhulukazi emkhakheni wokuthutha uchungechunge olubandayo, ama-seal nama-pad okumunca ukushaqeka alungiselelwe nge-DMTDA angazivumelanisa nezimo ezishisa kakhulu, anikeze isiqinisekiso sokusebenza okuzinzile kwezimoto zochungechunge olubandayo kanye nemishini yokuqandisa, futhi abe ukwesekwa okubalulekile kokuthuthukiswa kwezinto zochungechunge olubandayo.
Ubunjiniyela bezakhiwo kanye nokulwa nokugqwala kungenye indlela eyinhloko yokusetshenziswaI-DMTDANjenge-epoxy resin ephilisayo, i-dimethyl thio-toluene diamine ingasetshenziswa ukulungiselela izembozo zokulwa nokugqwala ezisebenza kahle kakhulu kanye nezembozo ezingashi, ezisetshenziswa kabanzi ekulweni nokugqwala kwezindonga zangaphakathi zamapayipi ensimbi, ukwelashwa okungenamlilo kophahla lwesakhiwo kanye nezindonga eziseceleni, njll. Izembozo ezilungisiwe zinokunamathela okuhle kakhulu, ukumelana nokugqwala kwamakhemikhali kanye nokuqina kwesakhiwo, okungandisa ngempumelelo impilo yenkonzo yengqalasizinda. Ezimweni ezinokugqwala okukhulu njengobunjiniyela basolwandle kanye nemishini yezimayini, izembozo ezisekelwe ku-DMTDA zingamelana nokuguguleka okuvela emanzini olwandle, imithombo ye-acidic kanye ne-alkaline, zinciphise kakhulu izindleko zokugcinwa kwemishini, futhi zisize ukuthuthukisa ubuchwepheshe emkhakheni wezindlela zokulwa nokugqwala eziphezulu.
Amathemba okuthuthukiswa kwe-dimethyl thio-toluene diamine (CAS 106264 793)
Ukuthobela imvelo kanye namathuba emakethe kuye kwasheshisa inqubo yokufaka esikhundleni i-dimethyl thio-toluene diamine. Njengoba izifunda ezifana ne-EU zisebenzisa imikhawulo ekusetshenzisweni kwama-ejenti okwelapha aqinile anobuthi njenge-MOCA, i-DMTDA amine enobuthi obuphansi futhi enobungani nemvelo isibe yindlela ekhethwayo embonini. Ayigcini nje ngokuthobela imithethonqubo yokuvikela imvelo yamazwe ngamazwe kodwa futhi inciphisa ukungcola kothuli ngesikhathi senqubo yokukhiqiza futhi ithuthukisa ukuphepha kwemisebenzi ye-workshop. Kusukela embonweni wethrendi yemakethe, usayizi wemakethe yomhlaba wonke we-DMTDA kanye nemikhiqizo efanayo ufinyelele ku-2.873 billion yuan ngo-2024. Kulindeleke ukuthi ikhule ngesilinganiso sokukhula sonyaka esihlanganisiwe esingu-17.06% kusukela ngo-2025 kuya ku-2030. Phakathi kwazo, insimu ye-polyurethane elastomer yokukhipha iyisimo esikhulu kunazo zonke sokusetshenziswa, futhi ukukhula kwesidingo esivela ekukhiqizeni okuphezulu kube yimbangela eyinhloko yokwanda kwemakethe.
Ochwepheshe bemboni bathi ukusetshenziswa okukhulu kweI-DMTDA ethacure 300Akugcini nje ngokukhuthaza ukuphindaphinda komkhiqizo embonini yama-ejenti okwelapha, kodwa futhi kusiza izimboni ezingezansi ukuthi zifinyelele ekunciphiseni izindleko, ekuthuthukiseni ukusebenza kahle, kanye nokuthuthukiswa okuphezulu. Esikhathini esizayo, ngentuthuko eqhubekayo kubuchwepheshe obusha bezinto, ukusetshenziswa kwe-DMTDA amine ezindiza, kumadivayisi ezokwelapha, kanye nezinamathiselo eziphezulu nakwezinye izinkambu kuzokhula kakhulu. Ngesikhathi esifanayo, ukuhlanzeka okuphezulu (≥99%) kanye nemikhiqizo ye-DMTDA elinganiselwe ngokwezifiso izoba yindawo yokuncintisana emakethe futhi iholele imboni esiqondisweni esicwengekile nesisebenza kahle kakhulu. Imboni ye-Unilong, ngokusungula ubuchwepheshe kanye nokwandiswa kwamandla, ithuthukisa kancane kancane izwi layo emakethe yomhlaba wonke ye-DMTDA futhi inikeze ukwesekwa okubalulekile kokuzimela kanye nokulawulwa kweketanga lezimboni.
Isikhathi sokuthunyelwe: Jan-23-2026