DiMethylthiotoluenediaMine (DMTDA) cas 106264-79-3
DimethylthioToluene Diamie / DMTDA, lambar CAS. 106264-79-3, magani ne na diamines don duka tsarin TDI da MDI. Kasancewa ruwa mai danko a dakin da zafin jiki yana haifar da fa'idodin sarrafawa, watau sauƙin canja wuri, shirye don amfani ba tare da narke daskararrun kamar MOCA ba. DMTDA shine madaidaicin wakili na warkewa da ake amfani dashi don yin elastomer na polyurethane mai ɗorewa da sassauƙa.
DMTDA na iya zama duka wakili na warkewa da sarƙoƙi don diisocyanate pre-polymers, musamman don tsarin polyurea wanda ke ba da kyawawan kaddarorin inji da kuzari. DMTDA wakili ne na duniya don haɗawa da sauran diamines na ruwa, misali DETDA, don bambanta ƙimar warkewa da kaddarorin injina don biyan buƙatu daban-daban. Sabili da haka, akwai aikace-aikacen DMTDA mai fa'ida akan ƙafafun polyurethane, taya, siminti, rollers, elastomeric coatings da sauransu. Kuna iya samun samfuran tushen tushen DMTDA a ko'ina, gami da gini, ma'adinai, motoci, kayan lantarki, yadi da wuraren bugu.
Ba kamar MOCA ba, 4,4'-Methylenebis(2-chloroaniline), DMTDA ba a zargin carcinogens. Yana da aminci ga muhalli, mara guba kuma yana da aminci ga ma'aikata su kula da shi yayin sarrafawa. Fa'idodin kasancewa cikin nau'in ruwa, DMTDA ba zai haifar da ƙura mai guba, tururi ko tururi yayin aiki ba. Don haka, ma'aikata ba za su fuskanci haɗarin ba yayin da suke mu'amala da DMTDA. A farkon lokuta, masu samar da polyurethane na EU suna amfani da MOCA a matsayin babban wakili na warkewa don tsarin polyurethane na tushen TDI saboda ƙarancin farashi, kyakkyawan aiki akan ƙarfin ƙarfi, karko, juriya da juriya. Don kare ma'aikata da muhalli, ƙasashe da yawa sun hana amfani da MOCA, don haka, yana tilasta masu kera polyurethane su nemo madaidaicin MOCA, DMTDA, wanda ake kira MOCA ruwa. DMTDA yana kawar da mafi yawan haɗarin kiwon lafiya da ke hade da sarrafa MOCA kuma yana ba da kyawawan kaddarorin jiki idan aka kwatanta da polyurethanes/polyureas elastomers na tushen MOCA.
Akwai wani muhimmin fa'ida na DMTDA idan aka kwatanta da MOCA. Tun da DMTDA yana cikin nau'in ruwa, yana ba da damar aiki a ƙananan zafin jiki fiye da MOCA. Ba tare da tsarin narkewa ba wanda shine dole akan MOCA, zaku iya adana yawan kuzarin kuzari yayin masana'antu. Yiwuwar ƙarfafawa baya faruwa a cikin kwantena masu haɗawa ko injunan hadawa. Bugu da ƙari, ana iya sarrafa shi a ƙananan yanayin zafi fiye da MOCA don yanayin ruwan sa. Matsakaicin nauyin DMTDA shine 107 idan aka kwatanta da MOCA shine 133.5. Wannan yana nufin raguwar 20% na nauyin prepolymer a wannan stoichiometer
Ana amfani da DMTDA azaman wakili na warkarwa na PU. Zai iya rage ayyukan ƙungiyar "NH2", don haka, don tsawaita rayuwar tukunya yayin yin simintin.
DMTDA , kasancewar ruwa a dakin zafin jiki yana haifar da fa'idar aiki mai mahimmanci idan aka kwatanta da MOCA, narkewar daskararru ba lallai bane. Hakanan, nau'in ruwan sa yana ba da damar aiwatar da prepolymer a ƙananan zafin jiki fiye da na MOCA kuma ba tare da ƙarfi ba yayin haɗuwa. DMTDA yana da daidai nauyi na 107 idan aka kwatanta da 133.5 na MOCA. Wannan yana nufin cewa ana buƙatar kusan 20% ƙasa da nauyi don wanda aka ba da prepolymer a wannan stoichiometry.
Kwatanta Abubuwan Jiki na Prepolymer Warke da DMTDA & MOCA
Kaddarorin jiki na prepolymer, duka nau'ikan ether da ester, lokacin da aka warke tare da wakili na warkarwa na DMTDA, sun yi daidai da waɗanda ke da MOCA. Kamar yadda yake cikin tsarin warkarwa na MOCA, kaddarorin jiki suna kula da rabon (stoichiometry) na curative zuwa prepolymer. DMTDA curative nuni haƙuri ga stoichiomety bambancin kama na MOCA. Ƙananan stoichiomety (80 ~ 90%) gabaɗaya yana kula da haɓaka juriya na matsawa, yayin da babban stoichiomety (100-105%) yana kula da haɓaka ƙarfin hawaye da sassauya rayuwa. Mafi kyawun sakamako ga yawancin aikace-aikacen ana samun su a kusan 95% stoichiometry. Yayin da yanayin warkewa (zazzabi da lokuta) yayi kama da waɗanda aka yi amfani da su tare da MOCA, DMTDA curative yana buƙatar kulawa sosai ga yanayin warkewa don samun matsakaicin kaddarorin jiki, musamman don saitin matsawa da kaddarorin masu ƙarfi.
DMTDA ne yadu amfani a shafi tsarin a gine-gine, mota, marine da kuma masana'antu tabbatar filayen. DMTDA-tushen polyurethane shafi yana da babban aiki, kamar tauri da elasticity, babban ƙarfi, hana ruwa, juriya yanayi, juriya abrasion, karce da lalata juriya. Za a iya amfani da polyurethane na tushen DMTDA ta hanyar dabaru daban-daban na sutura zuwa abubuwan da ake amfani da su, watau ƙarfe, itace, kankare, masonry da filayen filastik.
DMTDA kuma za a iya amfani da matsayin epoxy guduro curing wakili / rufi abu da PU elastomers, kamar polyurethane da polyurea amfani da komai daga high m coatings zuwa m kumfa like, ko da ƙafafun da taya. Bugu da ƙari, DMTDA na iya amfani da mota, gini, ma'adinai, yadi, bugu na bugu, trolley wheels, adhesives da lantarki masana'antu.
Shiryawa: 25kg, 200kg/drum na baƙin ƙarfe. ya da IBC TANK.
Adana da sufuri: Guji tuntuɓar ruwa. Ka nisanci hasken rana.
Rayuwar rayuwa: asu 12
| Abu | Fihirisa |
| Bayyanar | Haske rawaya zuwa rawaya m ruwa |
| wari | Amin kamar |
| Abun ciki na jimlar Diamine | 99% min |
| Dimethylthiotoluenediamine | 95% min |
| Monomethylthiotoluenediamine | 4% max |
| Trimethylthiotoluenediamine | 1% max |
| TDA abun ciki | 0.1% max |
| Launi, Ma'aunin launi na Gardner | 2-8 |
| Darajar Amin (mgKOH / g) | 520-540 |
| Danshi (%) | 0.1% max |
| 1. | |
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| 3. | |
| 4. | |
| 5. | |
| 6. | TDI 80/20 |
| 7. | TDI-Bases Polyisoyanurate (RC) |
| 8. | IS (1,5-Naphthalene Diisocyanate) CAS 3173-72-6 |
| 9. | RF (JQ-4) |
| 10. | RN |
| 11. | Bayanan CAS 68479-98-1 |
| 12. | DMTDA CAS 106264-79-3 |
| 13. | MMEA CAS 19900-72-2 |
| 14. | YAU CAS 91-97-4 |
| 15. | TEOF CAS 122-51-0 |
| 16. | MOCA CAS 101-14-4 |
| 17. | PTSI CAS 4083-64-1 |
| 18. | da dai sauransu... |
