DiMethylthiotoluenediaMine (DMTDA) cas 106264-79-3

DimethylthioToluene Diamie / DMTDA, nimero ya CAS. 106264-79-3, ni umuti wa diamines kuri sisitemu za TDI na MDI. Kuba amazi afite viscous ku bushyuhe bw'icyumba bitanga inyungu zikomeye zo kuyatunganya, ni ukuvuga ko byoroshye kuyatwara, yiteguye gukoreshwa adashongesheje ibintu bikomeye nk'uko MOCA ibikora. DMTDA ni umuti mwiza ukoreshwa mu gukora polyurethane/polyurea elastomers ziramba kandi zoroshye.

DMTDA ishobora kuba umuti uvura cyangwa umuyoboro w'uruhererekane rw'ibikoresho bya diisocyanate pre-polymers, cyane cyane kuri sisitemu ya polyurea itanga imiterere myiza ya mekanike n'ihindagurika. DMTDA ni umuti uvura uhuriweho n'izindi diamine z'amazi, urugero nka DETDA, kugira ngo uhindure ingano y'umuti n'imiterere ya mekanike kugira ngo huzuzwe ibisabwa bitandukanye. Kubwibyo, hari ikoreshwa rya DMTDA ku mapine ya polyurethane, amapine, amakaseti, amarongi, irangi rya elastomeric nibindi. Ushobora gusanga ibikoresho bya DMTDA-based fraisers ahantu hose, harimo ubwubatsi, ubucukuzi bw'amabuye y'agaciro, imodoka, ibikoresho by'ikoranabuhanga, imyenda n'aho bicapa.

Bitandukanye na MOCA, 4,4'-Methylenebis (2-chloroaniline), DMTDA ntabwo ikekwaho gutera kanseri. Ni nziza ku bidukikije, ntabwo ari uburozi kandi ni umutekano ku bakozi kuyikoresha mu gihe cyo kuyitunganya. Inyungu zo kuba iri mu mazi, DMTDA ntabwo izatera ivumbi ry’uburozi, imyuka cyangwa umwuka mu gihe cyo kuyitunganya. Kubwibyo, abakozi ntibazahura n’akaga mu gihe cyo kuyitunganya DMTDA. Mu bihe bya kera, abakora polyurethane bo mu Burayi bakoreshaga MOCA nk'igikoresho cy'ingenzi cyo kuvura sisitemu za polyurethane zishingiye kuri TDI bitewe nuko ihendutse kandi ikora neza ku mbaraga zo gukurura, kuramba, kwihanganira no kudashwanyagurika. Mu rwego rwo kurinda abakozi n'ibidukikije, ibihugu byinshi byabujije ikoreshwa rya MOCA, bityo, ihatira abakora polyurethane gushaka indi nsimbura MOCA, DMTDA, yitwa MOCA y’amazi. DMTDA ikuraho ingaruka nyinshi ku buzima zijyanye no kuyitunganya kandi itanga imiterere myiza y’umubiri ugereranije na elastomer za polyurethane zishingiye kuri MOCA/polyureas elastomers.

Hari ikindi cyiza cy'ingenzi cya DMTDA ugereranije na MOCA. Kubera ko DMTDA iri mu ishusho y'amazi, yemerera gukora ku bushyuhe buri hasi kurusha MOCA. Hatabayeho gushonga, bikaba ari ngombwa kuri MOCA, ushobora kuzigama ikiguzi kinini cy'ingufu mu gihe cyo kuyikora. Ntabwo bishoboka ko ikomera mu bikoresho bivanga cyangwa mu mashini zivanga. Byongeye kandi, ishobora gufatwa ku bushyuhe buri hasi kurusha MOCA bitewe n'imiterere yayo y'amazi. Uburemere bungana na DMTDA ni 107 ugereranije na MOCA ni 133.5. Ibi bivuze ko uburemere bwa prepolymer kuri stoichiometr imwe bugabanukaho 20%.