I-DiMethylthiotoluenediaMine (DMTDA) cas 106264-79-3
I-DimethylthioToluene Diamie / DMTDA, inombolo ye-CAS. 106264-79-3, iyisithako sokwelapha ama-diamine kuzo zombili izinhlelo ze-TDI kanye ne-MDI. Ukuba uketshezi oluqinile ekushiseni kwegumbi kuphumela ezinzuzweni ezibalulekile zokucubungula, okungukuthi ukudlulisa kalula, ukulungela ukusetshenziswa ngaphandle kokuncibilikisa izinto eziqinile njengoba kwenza i-MOCA. I-DMTDA iyi-ejenti yokwelapha efanelekile esetshenziselwa ukwenza ama-polyurethane/polyurea elastomers aqinile futhi aguquguqukayo.
I-DMTDA ingaba yi-ejenti yokwelapha kanye ne-chain extender yama-pre-polymer e-diisocyanate, ikakhulukazi ohlelweni lwe-polyurea olunikeza izakhiwo ezinhle zemishini neziguquguqukayo. I-DMTDA iyi-ejenti yokwelapha ehlanganisiwe namanye ama-diamine e-liquid, isibonelo i-DETDA, ukushintsha amazinga okwelapha kanye nezakhiwo zemishini ukuze kuhlangatshezwane nezidingo ezahlukene. Ngakho-ke, kukhona ukusetshenziswa okubanzi kwe-DMTDA kumasondo e-polyurethane, amathayi, ama-caster, ama-rollers, izembozo ze-elastomeric njalo njalo. Ungathola imikhiqizo eqediwe esekwe yi-DMTDA yonke indawo, kufaka phakathi ukwakhiwa, izimayini, izimoto, izinto zikagesi, izindwangu kanye nezindawo zokunyathelisa.
Ngokungafani ne-MOCA, i-4,4'-Methylenebis (2-chloroaniline), i-DMTDA ayisolwa ukuthi iyimbangela yomdlavuza. Inobungani nemvelo, ayinabo ubuthi futhi iphephile ukuthi abasebenzi bayiphathe ngesikhathi sokucubungula. Izinzuzo zokuba semoyeni, i-DMTDA ngeke ibangele uthuli olunobuthi, umusi noma umhwamuko ngenkathi isebenza. Ngakho-ke, abasebenzi ngeke bavezwe engozini ngenkathi bephatha i-DMTDA. Ezikhathini zakuqala, abakhiqizi be-polyurethane be-EU basebenzisa i-MOCA njenge-ejenti eyinhloko yokwelapha yezinhlelo ze-polyurethane ezisekelwe ku-TDI ngenxa yentengo yayo ephansi, ukusebenza okuhle kakhulu emandleni okudonseka, ukuqina, ukuqina kanye nokumelana nokuklwebheka. Ukuze kuvikelwe abasebenzi kanye nemvelo, amazwe amaningi ayenqabela ukusetshenziswa kwe-MOCA, ngakho-ke, iphoqa abakhiqizi be-polyurethane ukuthi bathole indawo ye-MOCA, i-DMTDA, ebizwa nangokuthi i-MOCA ewuketshezi. I-DMTDA isusa izingozi eziningi zempilo ezihlobene nokuphatha i-MOCA futhi inikeze izakhiwo zomzimba ezinhle kakhulu uma kuqhathaniswa ne-polyurethanes/polyureas elastomers ezisekelwe ku-MOCA.
Kukhona enye inzuzo ebalulekile ye-DMTDA uma iqhathaniswa ne-MOCA. Njengoba i-DMTDA isesimo soketshezi, ivumela ukusebenza ekushiseni okuphansi kune-MOCA. Ngaphandle kwenqubo yokuncibilikisa okuyimfuneko ku-MOCA, ungonga izindleko eziningi zamandla ngesikhathi sokukhiqiza. Amathuba okuqina awatholakali ezitsheni zokuxuba noma emishinini yokuxuba. Ngaphezu kwalokho, ingaphathwa emazingeni okushisa aphansi kune-MOCA ngesimo sayo soketshezi. Isisindo esilinganayo se-DMTDA singama-107 uma siqhathaniswa ne-MOCA singama-133.5. Lokhu kusho ukwehla okungu-20% kwesisindo se-prepolymer ku-stoichiometr efanayo.
I-DMTDA isetshenziswa njenge-ejenti yokwelapha ye-PU. Inganciphisa umsebenzi weqembu le-"NH2", ngaleyo ndlela, yandise impilo yebhodwe ngenkathi iphonswa.
I-DMTDA, njengoba iyi-liquid ekamelweni lokushisa, iholela enzuzweni enkulu yokucubungula uma kuqhathaniswa ne-MOCA, ukuncibilika kwezinto eziqinile akudingekile. Futhi, isimo sayo soketshezi sivumela ukucubungula i-prepolymer ekushiseni okuphansi kune-MOCA futhi ngaphandle kokuqina ngesikhathi sokuxuba. I-DMTDA inesisindo esilingana ne-107 uma kuqhathaniswa ne-133.5 ye-MOCA. Lokhu kusho ukuthi kudingeka cishe u-20% ngaphansi ngesisindo ku-prepolymer ethile ku-stoichiometry efanayo.
Ukuqhathaniswa Kwezakhiwo Ezibonakalayo ze-Prepolymer Ephulukisiwe nge-DMTDA kanye ne-MOCA
Izakhiwo zomzimba ze-prepolymer, zombili izinhlobo ze-ether kanye ne-ester, uma zilashwa nge-ejenti yokwelapha ye-DMTDA, ziyafana nalezo ezisekelwe ku-MOCA. Njengasesimisweni sokwelapha se-MOCA, izakhiwo zomzimba zizwela i-ration (stoichiometry) yokwelapha ku-prepolymer. Ukubekezelela ukubonakaliswa kokwelapha kwe-DMTDA ekushintsheni kwe-stoichiomety okufana nokwe-MOCA. I-stoichiomety ephansi (80~90%) ngokuvamile ivame ukukhulisa ukumelana kwesethi yokucindezela, kuyilapho i-stoichiomety ephezulu (100-105%) ivame ukukhulisa amandla okudabuka nokuphila okuguquguqukayo. Imiphumela emihle kakhulu yokusetshenziswa okuningi itholakala ku-stoichiometry engaba ngu-95%. Ngenkathi izimo zokwelapha (izinga lokushisa kanye nezikhathi) zifana nalezo ezisetshenziswa ne-MOCA, i-DMTDA yokwelapha idinga ukunakwa okuseduze ezimweni zangemva kokwelapha ukuze kutholakale izakhiwo zomzimba eziphezulu, ikakhulukazi zesethi yokucindezela kanye nezakhiwo eziguquguqukayo.
I-DMTDA isetshenziswa kabanzi ezinhlelweni zokumboza emikhakheni yokulungisa izakhiwo, yezimoto, yasolwandle kanye neyezimboni. I-DMTDA-based polyurethanes coating isebenza kahle kakhulu, njengokuqina nokunwebeka, amandla aphezulu, ukungangeni manzi, ukumelana nesimo sezulu, ukumelana nokuklwebheka, ukuklwebheka kanye nokumelana nokugqwala. I-DMTDA-based polyurethanes ingasetshenziswa ngezindlela ezahlukene zokumboza ezindaweni ezingaphansi komhlaba, okungukuthi izinsimbi, ukhuni, ukhonkolo, ukhuni kanye nezindawo zepulasitiki.
I-DMTDA ingasetshenziswa futhi njenge-epoxy resin curing agent/insulation material kanye ne-PU elastomers, njenge-polyurethane kanye ne-polyurea esetshenziswa kukho konke kusukela ekugqokeni okuqinile kuya ezivalweni ze-foam eziguquguqukayo, ngisho namasondo namathayi. Ngaphezu kwalokho, i-DMTDA ingasetshenziswa ezimotweni, ezakhiweni, ezimayini, ezindwangu, kuma-rollers okunyathelisa, amasondo etroli, kuma-glue kanye nasezimbonini ze-elekthronikhi.
Ukupakisha: 25kg, 200kg/isigubhu sensimbi. noma i-IBC TANK.
Ukugcina kanye nokuthuthwa: Gwema ukuthintana namanzi. Gcina kude nokukhanya kwelanga.
Isikhathi sokuphila: izinyanga eziyi-12
| Into | Inkomba |
| Ukubukeka | uketshezi olukhanyayo oluphuzi kuya kophuzi olubonakalayo |
| iphunga | Okufana ne-Amine |
| Okuqukethwe kwe-Diamine iyonke | 99%min |
| I-Dimethylthiotoluenediamine | 95%min |
| I-Monomethylthiotoluenediamine | 4% ubuningi |
| I-Trimethylthiotoluenediamine | 1% ubuningi |
| Okuqukethwe kwe-TDA | 0.1%ubuningi |
| Umbala, isikali sombala sikaGardner | 2-8 |
| Inani le-amine (mgKOH / g) | 520-540 |
| Umswakama (%) | 0.1%ubuningi |
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| 3. | |
| 4. | |
| 5. | |
| 6. | I-TDI 80/20 |
| 7. | Izisekelo ze-TDI Polyisoyanurate (RC) |
| 8. | I-NDI(1,5-Naphthalene Diisocyanate) CAS 3173-72-6 |
| 9. | I-RF(JQ-4) |
| 10. | I-RN |
| 11. | I-DETDA CAS 68479-98-1 |
| 12. | I-DMTDA CAS 106264-79-3 |
| 13. | I-MMEA CAS 19900-72-2 |
| 14. | I-TODI CAS 91-97-4 |
| 15. | I-TEOF CAS 122-51-0 |
| 16. | I-MOCA CAS 101-14-4 |
| 17. | I-PTSI CAS 4083-64-1 |
| 18. | njll... |
