ʻO DiMethylthiotoluenediaMine (DMTDA) cas 106264-79-3
ʻO DimethylthioToluene Diamie / DMTDA, helu CAS. 106264-79-3, he diamines curative no nā ʻōnaehana TDI a me MDI. ʻO ka lilo ʻana i wai viscous ma ka mahana o ka lumi e hopena i nā pono hana koʻikoʻi, ʻo ia hoʻi ka hoʻoili maʻalahi, mākaukau e hoʻohana me ka ʻole o ka hoʻoheheʻe ʻana i nā mea paʻa e like me ka hana a MOCA. ʻO DMTDA kahi mea hoʻōla kūpono i hoʻohana ʻia e hana i nā elastomers polyurethane/polyurea paʻa a maʻalahi hoʻi.
Hiki i ka DMTDA ke lilo i mea hoʻōla a me kahi mea hoʻolōʻihi kaulahao no nā diisocyanate pre-polymers, ʻoi aku hoʻi no ka ʻōnaehana polyurea e hāʻawi ana i nā waiwai mechanical a me nā waiwai dynamic maikaʻi. He mea hoʻōla honua ʻo DMTDA i hui pū ʻia me nā diamines wai ʻē aʻe, no ka laʻana ʻo DETDA, e hoʻololi i nā helu hoʻōla a me nā waiwai mechanical e hoʻokō i nā koi like ʻole. No laila, aia kahi noi ākea o DMTDA ma nā huila polyurethane, nā kaila, nā casters, nā rollers, nā uhi elastomeric a pēlā aku. Hiki iā ʻoe ke loaʻa nā huahana i hoʻopau ʻia ma ke kumu DMTDA ma nā wahi āpau, me ke kūkulu ʻana, ka mining, nā kaʻa, nā mea uila, nā lole a me nā wahi paʻi.
ʻAʻole e like me MOCA, 4,4'-Methylenebis (2-chloroaniline), ʻaʻole i manaʻo ʻia he carcinogens ka DMTDA. He launa kaiapuni, ʻaʻohe mea ʻawahia a palekana no nā limahana e lawelawe me ia i ka wā o ka hana ʻana. ʻO nā pōmaikaʻi me ke ʻano wai, ʻaʻole e hoʻoulu ka DMTDA i ka lepo ʻawahia, nā uahi a me nā mahu i ka wā e hana ana. No laila, ʻaʻole e hōʻike ʻia nā limahana i ka pōʻino i ka wā e lawelawe ai me DMTDA. I ka wā mua, hoʻohana nā mea hana polyurethane EU iā MOCA ma ke ʻano he mea hoʻōla nui no nā ʻōnaehana polyurethane TDI ma muli o kona kumukūʻai haʻahaʻa, hana maikaʻi loa ma ka ikaika tensile, ka lōʻihi, ka resiliency a me ke kū'ē ʻana i ka abrasion. I mea e pale ai i nā limahana a me ke kaiapuni, ua pāpā ka nui o nā ʻāina i ka hoʻohana ʻana iā MOCA, no laila, koi ia i nā mea hana polyurethane e ʻimi i kahi pani MOCA, ʻo DMTDA, i kapa ʻia hoʻi he MOCA wai. Hoʻopau ʻo DMTDA i ka hapa nui o nā pōʻino olakino e pili ana i ka lawelawe ʻana iā MOCA a hāʻawi i nā waiwai kino maikaʻi loa i ka hoʻohālikelike ʻana i nā polyurethanes/polyureas elastomers i hoʻokumu ʻia ma MOCA.
Aia kekahi pono koʻikoʻi o DMTDA i ka hoʻohālikelike ʻana me MOCA. ʻOiai aia ka DMTDA ma ke ʻano wai, hiki iā ia ke hana ma ka mahana haʻahaʻa ma mua o ka MOCA. Me ka ʻole o ke kaʻina hana hoʻoheheʻe ʻana he mea pono ia ma MOCA, hiki iā ʻoe ke mālama i ka nui o ke kumukūʻai ikehu i ka wā o ka hana ʻana. ʻAʻole hiki ke hoʻopaʻa ʻia i loko o nā ipu hoʻohuihui a i ʻole nā mīkini hoʻohuihui. Eia kekahi, hiki ke lawelawe ʻia ma nā mahana haʻahaʻa ma mua o MOCA no kona kūlana wai. ʻO ke kaumaha like o DMTDA he 107 ke hoʻohālikelike ʻia me MOCA he 133.5. ʻO ia hoʻi ka hōʻemi ʻana o 20% i ke kaumaha o ka prepolymer ma ka stoichiometr like.
Hoʻohana ʻia ʻo DMTDA ma ke ʻano he mea hoʻōla PU. Hiki iā ia ke hoʻolohi i ka hana o ka hui "NH2", no laila, e hoʻolōʻihi i ke ola o ka ipuhao i ka wā e hoʻolei ana.
ʻOiai he wai ka DMTDA ma ka mahana o ka lumi, he hopena ia i kahi pono hana koʻikoʻi i ka hoʻohālikelike ʻana me MOCA, ʻaʻole pono ka hoʻoheheʻe ʻana i nā mea paʻa. Eia kekahi, ʻo kona ʻano wai e ʻae ai i ka hana ʻana i ka prepolymer ma ka mahana haʻahaʻa ma mua o ka MOCA a me ka ʻole o ka paʻa ʻana i ka wā o ke kāwili ʻana. Loaʻa iā DMTDA kahi kaumaha like o 107 i hoʻohālikelike ʻia me 133.5 o MOCA. ʻO ke ʻano kēia, ma kahi o 20% emi ma ke kaumaha e pono ai no kahi prepolymer i hāʻawi ʻia ma ka stoichiometry like.
Ke hoʻohālikelike nei i nā waiwai kino o ka Prepolymer i hoʻōla ʻia me DMTDA & MOCA
ʻO nā waiwai kino o ka prepolymer, ʻo nā ʻano ether a me ester, i ka wā e hoʻōla ʻia ai me ka mea hoʻōla DMTDA, ua like ia me nā mea i hoʻokumu ʻia me MOCA. E like me ka ʻōnaehana hoʻōla MOCA, pili nā waiwai kino i ka ratio (stoichiometry) o ka curative i ka prepolymer. ʻO ka hoʻomanawanui hōʻikeʻike DMTDA curative i nā ʻano stoichiomety e like me MOCA. ʻO ka stoichiomety haʻahaʻa (80 ~ 90%) maʻamau e hoʻonui i ke kū'ē ʻana o ka compression set, ʻoiai ʻo ka stoichiomety kiʻekiʻe (100-105%) e hoʻonui i ka ikaika haehae a me ke ola flex. Loaʻa nā hopena maikaʻi loa no ka hapa nui o ka noi ma kahi o 95% stoichiometry. ʻOiai ua like nā kūlana hoʻōla (mahana a me nā manawa) me nā mea i hoʻohana ʻia me MOCA, koi ka DMTDA curative i ka nānā pono ʻana i nā kūlana post cure e loaʻa ai nā waiwai kino kiʻekiʻe loa, ʻoi aku hoʻi no ka compression set a me nā waiwai dynamic.
Hoʻohana nui ʻia ʻo DMTDA i nā ʻōnaehana uhi i nā kahua mālama hale, kaʻa, moana a me nā ʻoihana. ʻO ka uhi ʻana o nā polyurethanes i hoʻokumu ʻia e DMTDA me ka hana kiʻekiʻe, e like me ka paʻakikī a me ka elasticity, ka ikaika kiʻekiʻe, ka pale wai, ke kū'ē i ka wā, ke kū'ē i ka abrasion, ke kū'ē i ka ʻōpala a me ka corrosion. Hiki ke hoʻopili ʻia nā polyurethanes i hoʻokumu ʻia e DMTDA ma o nā ʻano hana uhi like ʻole i nā substrates, ʻo ia hoʻi nā metala, ka lāʻau, ka sima, ka masonry a me nā ʻili plastik.
Hiki ke hoʻohana ʻia ʻo DMTDA ma ke ʻano he mea hoʻōla resin epoxy/mea hoʻokaʻawale a me nā elastomers PU, e like me ka polyurethane a me ka polyurea i hoʻohana ʻia no nā mea āpau mai nā uhi paʻa kiʻekiʻe a hiki i nā sila huʻa palupalu, a me nā huila a me nā kaila. Eia kekahi, hiki ke hoʻopili ʻia ʻo DMTDA ma nā ʻoihana kaʻa, hale, mining, textile, nā wili paʻi, nā huila trolley, nā mea hoʻopili a me nā ʻoihana uila.
Hoʻopili ʻana: 25kg, 200kg/pahu hao. a i ʻole IBC TANK.
Ka mālama ʻana a me ka halihali ʻana: E pale i ka hoʻopili ʻana me ka wai. E mālama mai ka lā.
Ola papa: 12 mahina
| Mea | Papa Kuhikuhi |
| helehelena | Wai melemele māmā a melemele moakaka |
| ʻala | ʻAno like me ka ʻAmine |
| ʻO ka nui o ka Diamine holoʻokoʻa | 99% minuke |
| ʻO Dimethylthiotoluenediamine | 95% minuke |
| ʻO Monomethylthiotoluenediamine | 4% kiʻekiʻe loa |
| ʻO ka Trimethylthiotoluenediamine | 1% max |
| ʻIke TDA | 0.1% max |
| Waihoʻoluʻu, unahi kala Gardner | 2-8 |
| Ka waiwai o ka amine (mgKOH / g) | 520-540 |
| Ka makū (%) | 0.1% max |
| 1. | |
| 2. | |
| 3. | |
| 4. | |
| 5. | |
| 6. | TDI 80/20 |
| 7. | Nā kumu TDI 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. | ʻO TEOF CAS 122-51-0 |
| 16. | MOCA CAS 101-14-4 |
| 17. | PTSI CAS 4083-64-1 |
| 18. | a pēlā aku... |
