DiMethylthiotoluenediaMine (DMTDA) cas 106264-79-3
Ko te DimethylthioToluene Diamie / DMTDA, nama CAS. 106264-79-3, he rongoā diamine mō ngā pūnaha TDI me MDI. Nā te mea he wai matotoru i te pāmahana rūma, he nui ngā painga tukatuka, arā, he ngāwari te whakawhiti, he rite ki te whakamahi me te kore e whakarewa i ngā mea totoka pērā i te MOCA. He matū whakaora pai te DMTDA e whakamahia ana hei hanga i ngā elastomers polyurethane/polyurea pakari me te ngāwari.
Ka taea e te DMTDA te noho hei kaiwhakaora me te whakaroa mekameka mō ngā diisocyanate pre-polymers, inā koa mō te pūnaha polyurea e whakarato ana i ngā āhuatanga miihini me te hihiri pai. He kaiwhakaora whānui te DMTDA hei whakakotahi me ētahi atu diamine wai, hei tauira ko te DETDA, hei whakarerekē i ngā tere whakamaroke me ngā āhuatanga miihini kia tutuki ai ngā whakaritenga rerekē. Nō reira, he whānui te whakamahinga o te DMTDA ki ngā wira polyurethane, ngā potae, ngā wira hurihuri, ngā roera, ngā paninga elastomeric me ētahi atu. Ka kitea e koe ngā hua kua oti te hanga DMTDA i ngā wāhi katoa, tae atu ki te hanga, te keri maina, te motuka, te hikohiko, te kakahu me ngā wāhi tā.
He rerekē ki te MOCA, 4,4'-Methylenebis(2-chloroaniline), kāore te DMTDA e whakapaetia he matū whakaputa mate pukupuku. He pai mō te taiao, kāore he paitini, ā, he haumaru hoki mō ngā kaimahi ki te whakamahi i te wā e tukatukahia ana. Nā te mea he wai te āhua, kāore te DMTDA e whakaputa puehu paitini, paowa, kohu rānei i te wā e mahi ana. Nō reira, kāore ngā kaimahi e tūpono ki te mōrearea i te wā e whakamahi ana i te DMTDA. I ngā wā o mua, ka whakamahia e ngā kaihanga polyurethane o te EU te MOCA hei matū whakamaroke matua mō ngā pūnaha polyurethane e hangai ana ki te TDI nā te mea he iti te utu, he pai te mahi ki te kaha kume, te roa, te ātete me te ātete ki te pakū. Hei tiaki i ngā kaimahi me te taiao, he maha ngā whenua i aukati i te whakamahinga o te MOCA, nō reira, ka akiakihia ngā kaihanga polyurethane ki te kimi i te whakakapinga MOCA, te DMTDA, e kiia ana ko te MOCA wai. Ka whakakorea e te DMTDA te nuinga o ngā mōrearea hauora e pā ana ki te whakahaere i te MOCA, ā, ka whakaratohia he āhuatanga ā-tinana pai rawa atu ki te whakataurite ki ngā polyurethane/polyureas elastomers e hangai ana ki te MOCA.
Tērā atu anō tētahi painga nui o te DMTDA ki te whakataurite ki te MOCA. Nā te mea he wai te DMTDA, ka taea te whakahaere i te pāmahana iti iho i te MOCA. Ki te kore he tukanga rewa, he mea nui ki te MOCA, ka taea e koe te penapena i te nui o te utu pūngao i te wā hanga. Kāore e taea te whakapakeke i roto i ngā ipu whakaranu, i ngā mīhini whakaranu rānei. Hei tāpiri, ka taea te whakahaere i ngā pāmahana iti iho i te MOCA mō tōna āhua wai. Ko te taumaha ōrite o te DMTDA he 107, ki te whakataurite ki te MOCA he 133.5. Ko te tikanga he 20% te hekenga o te taumaha o te prepolymer i te stoichiometr kotahi.
Ka whakamahia te DMTDA hei matū whakaora PU. Ka taea e ia te whakaroa i te mahi a te rōpū "NH2", ā, ka roa ake te ora o te kohua i te wā e maka ana.
He wai te DMTDA i te pāmahana rūma, ā, he painga nui tēnei ki te tukatuka i te MOCA, kāore e hiahiatia te whakarewa i ngā mea totoka. Waihoki, mā tōna āhua wai ka taea te tukatuka i te prepolymer i te pāmahana iti iho i te MOCA, ā, kāore hoki e totoka i te wā e whakaranua ana. Ko te taumaha ōrite o te DMTDA he 107 ki te 133.5 o te MOCA. Ko te tikanga he 20% te iti iho o te taumaha e hiahiatia ana mō tētahi prepolymer i te stoichiometry kotahi.
Te Whakataurite i ngā Āhuatanga Ā-tinana o te Prepolymer i Whakaorahia ki te DMTDA me te MOCA
He rite tonu ngā āhuatanga ā-tinana o te prepolymer, arā, ngā momo ether me te ester, ina whakamaroketia ki te DMTDA, ki ērā i hangaia ki te MOCA. Pērā i te pūnaha whakamaroketia MOCA, he tairongo ngā āhuatanga ā-tinana ki te ōwehenga (stoichiometry) o te curative ki te prepolymer. He rite te manawanui o te DMTDA ki ngā rerekētanga stoichiomety ki tērā o te MOCA. Ko te stoichiomety iti (80~90%) te tikanga ka whakanui ake i te ātete huinga pēhi, ko te stoichiomety teitei (100-105%) ka whakanui ake i te kaha haehae me te roa o te piko. Ko ngā hua pai rawa atu mō te nuinga o ngā tono ka puta i te stoichiometry tata ki te 95%. Ahakoa he rite ngā āhuatanga whakamaroketia (pāmahana me ngā wā) ki ērā e whakamahia ana me te MOCA, me aro nui ake te DMTDA curative ki ngā āhuatanga muri i te whakamaroketia kia whiwhi ai i ngā āhuatanga ā-tinana tino nui, inā koa mō ngā āhuatanga huinga pēhi me te hihiri.
E whakamahia whānuitia ana te DMTDA i roto i ngā pūnaha paninga i roto i ngā mara tiaki whare, motuka, moana me te ahumahi. He tino pai te mahi o ngā paninga polyurethane e hangai ana ki te DMTDA, pērā i te pakari me te ngāwari, te kaha teitei, te ātete ki te wai, te ātete ki te huarere, te ātete ki te karawarawa me te waikura. Ka taea te whakamahi i ngā polyurethane e hangai ana ki te DMTDA mā roto i ngā tikanga paninga rerekē ki ngā papa, arā, ngā konganuku, te rakau, te raima, te pereki me ngā mata kirihou.
Ka taea hoki te whakamahi i te DMTDA hei matū whakamaroke/rauemi whakamarumaru o te kapia epoxy me ngā elastomers PU, pērā i te polyurethane me te polyurea e whakamahia ana mō ngā mea katoa mai i ngā paninga pakari ki ngā hiri pahuka ngāwari, tae atu ki ngā wira me ngā potae. Hei tāpiri, ka taea te whakamahi i te DMTDA ki ngā ahumahi motuka, hanga whare, keri maina, kakahu, roera tā, wira trolley, piripiri me ngā ahumahi hiko.
Tākai: 25kg, 200kg/pahu rino, IBC TANK rānei.
Te rokiroki me te kawe: Kaua e pā ki te wai. Puritia kia matara atu i te rā.
Te roa o te oranga: 12 marama
| Taonga | Rārangi |
| Āhua | Wai mārama kōwhai ki te kōwhai |
| kakara | He rite ki te amine |
| Te ihirangi o te Diamine katoa | 99% meneti |
| Dimethylthiotoluenediamine | 95% meneti |
| Monomethylthiotoluenediamine | 4% te mōrahi |
| Trimethylthiotoluenediamine | 1%mōrahi |
| Ngā ihirangi TDA | 0.1% mōrahi |
| Tae, tauine tae Gardner | 2-8 |
| Uara amine (mgKOH/g) | 520-540 |
| Makuku (%) | 0.1% mōrahi |
| 1. | |
| 2. | |
| 3. | |
| 4. | |
| 5. | |
| 6. | TDI 80/20 |
| 7. | TDI-Bases Polyisoyanurate（RC） |
| 8. | NDI(1,5-Naphthalene Diisocyanate) CAS 3173-72-6 |
| 9. | RF(JQ-4) |
| 10. | RN |
| 11. | DETDA CAS 68479-98-1 |
| 12. | DMTDA CAS 106264-79-3 |
| 13. | MMEA CAS 19900-72-2 |
| 14. | TODI CAS 91-97-4 |
| 15. | TEOF CAS 122-51-0 |
| 16. | MOCA CAS 101-14-4 |
| 17. | PTSI CAS 4083-64-1 |
| 18. | me ētahi atu... |
