DiMethylthiotoluenediaMine (DMTDA) cas 106264-79-3
DimethylthioToluene Diamie / DMTDA, CAS tus lej. 106264-79-3, yog ib qho tshuaj kho diamines rau ob qho tib si TDI thiab MDI systems. Ua ib qho kua nplaum ntawm chav tsev kub ua rau muaj txiaj ntsig zoo rau kev ua haujlwm, piv txwv li yooj yim hloov pauv, npaj siv yam tsis yaj cov khoom khov zoo li MOCA ua. DMTDA yog ib qho tshuaj kho zoo tshaj plaws uas siv los ua cov polyurethane/polyurea elastomers uas ruaj khov thiab yoog tau.
DMTDA tuaj yeem ua tau ob qho tib si tus neeg sawv cev kho thiab tus txuas saw rau diisocyanate pre-polymers, tshwj xeeb tshaj yog rau polyurea system uas muab cov khoom siv kho tshuab zoo thiab dynamic. DMTDA yog tus neeg sawv cev kho thoob ntiaj teb los ua ke nrog lwm cov kua diamines, piv txwv li DETDA, los hloov pauv tus nqi kho thiab cov khoom siv kho tshuab kom tau raws li cov kev xav tau sib txawv. Yog li ntawd, muaj kev siv dav dav ntawm DMTDA ntawm polyurethane log, log tsheb, casters, rollers, elastomeric coatings thiab lwm yam. Koj tuaj yeem nrhiav tau DMTDA-base tiav cov khoom tiav txhua qhov chaw, suav nrog kev tsim kho, kev khawb av, tsheb, khoom siv hluav taws xob, textiles thiab thaj chaw luam ntawv.
Tsis zoo li MOCA, 4,4'-Methylenebis (2-chloroaniline), DMTDA tsis yog cov tshuaj carcinogens. Nws yog ib puag ncig-phooj ywg, tsis muaj tshuaj lom thiab muaj kev nyab xeeb rau cov neeg ua haujlwm tuav thaum lub sijhawm ua haujlwm. Cov txiaj ntsig nrog kev nyob hauv daim ntawv kua, DMTDA yuav tsis ua rau muaj hmoov av lom, pa luam yeeb lossis pa thaum ua haujlwm. Yog li ntawd, cov neeg ua haujlwm yuav tsis raug rau qhov txaus ntshai thaum tuav nrog DMTDA. Thaum ntxov, cov neeg tsim khoom polyurethane EU siv MOCA ua tus neeg sawv cev tseem ceeb rau TDI-raws li polyurethane systems vim nws tus nqi qis, kev ua tau zoo heev ntawm lub zog tensile, durability, resiliency thiab abrasion tsis kam. Txhawm rau tiv thaiv cov neeg ua haujlwm thiab ib puag ncig, ntau thiab ntau lub tebchaws txwv tsis pub siv MOCA, yog li, nws yuam cov neeg tsim khoom polyurethane nrhiav MOCA hloov, DMTDA, tseem hu ua kua MOCA. DMTDA tshem tawm feem ntau ntawm cov kev phom sij kev noj qab haus huv cuam tshuam nrog kev tuav MOCA thiab muab cov khoom zoo heev piv rau MOCA-raws li polyurethanes / polyureas elastomers.
Muaj lwm qhov zoo tseem ceeb ntawm DMTDA piv rau MOCA. Vim tias DMTDA nyob rau hauv daim ntawv kua, nws tso cai rau kev ua haujlwm ntawm qhov kub qis dua li MOCA. Yog tsis muaj cov txheej txheem yaj uas yog qhov yuav tsum muaj ntawm MOCA, koj tuaj yeem txuag tau ntau tus nqi hluav taws xob thaum lub sijhawm tsim khoom. Qhov ua tau ntawm kev khov tsis tshwm sim hauv cov thawv sib tov lossis cov tshuab sib tov. Tsis tas li ntawd, nws tuaj yeem ua haujlwm ntawm qhov kub qis dua MOCA rau nws lub xeev kua. Qhov hnyav sib npaug ntawm DMTDA yog 107 piv rau MOCA yog 133.5. Qhov no txhais tau tias txo 20% ntawm qhov hnyav ntawm prepolymer ntawm tib stoichiometr.
DMTDA siv ua tus neeg sawv cev PU curing. Nws tuaj yeem ua rau qeeb qeeb ntawm "NH2" pawg, yog li, kom ntev lub neej ntawm lub lauj kaub thaum casting.
DMTDA, ua kua dej ntawm chav tsev kub ua rau muaj qhov zoo dua ntawm kev ua haujlwm piv rau MOCA, kev yaj cov khoom khov tsis tsim nyog. Tsis tas li ntawd, nws cov kua dej tso cai rau kev ua cov prepolymer ntawm qhov kub qis dua li ntawm MOCA thiab tsis muaj kev khov thaum lub sijhawm sib tov. DMTDA muaj qhov hnyav sib npaug ntawm 107 piv rau 133.5 ntawm MOCA. Qhov no txhais tau tias kwv yees li 20% tsawg dua los ntawm qhov hnyav yog qhov yuav tsum tau rau ib qho prepolymer muab ntawm tib stoichiometry.
Kev Sib Piv ntawm Cov Khoom Siv Lub Cev ntawm Prepolymer Kho nrog DMTDA & MOCA
Cov khoom siv lub cev ntawm prepolymer, ob qho tib si ether thiab ester hom, thaum kho nrog DMTDA curing agent, zoo ib yam li cov uas siv MOCA. Ib yam li hauv MOCA curing system, cov khoom siv lub cev muaj kev nkag siab rau qhov sib piv (stoichiometry) ntawm curative rau prepolymer. DMTDA curative exhibition tolerance rau stoichiomety variations zoo ib yam li MOCA. Stoichiomety qis (80 ~ 90%) feem ntau ua rau muaj kev tiv thaiv compression set ntau tshaj plaws, thaum stoichiomety siab (100-105%) feem ntau ua rau muaj zog tear thiab flex life ntau tshaj plaws. Cov txiaj ntsig zoo tshaj plaws rau feem ntau daim ntawv thov tau txais ntawm kwv yees li 95% stoichiometry. Thaum cov xwm txheej kho (kub thiab sijhawm) zoo ib yam li cov uas siv nrog MOCA, DMTDA curative xav tau kev saib xyuas ze rau cov xwm txheej tom qab kho kom tau txais cov khoom siv lub cev ntau tshaj plaws, tshwj xeeb tshaj yog rau cov khoom siv compression thiab cov khoom siv dynamic.
DMTDA siv dav hauv cov txheej txheem txheej hauv kev tsim vaj tsev, tsheb, nkoj thiab kev lag luam txij nkawm. Cov txheej txheem polyurethanes DMTDA yog nrog kev ua tau zoo, xws li kev tawv thiab elasticity, lub zog siab, dej tsis nkag, tiv taus huab cua, tiv taus kev sib txhuam, khawb thiab tiv taus corrosion. DMTDA-based polyurethanes tuaj yeem siv los ntawm ntau txoj kev txheej txheem rau cov substrates, piv txwv li hlau, ntoo, pob zeb, masonry thiab yas nto.
DMTDA kuj tseem siv tau ua cov tshuaj epoxy resin curing agent/insulation material thiab PU elastomers, xws li polyurethane thiab polyurea siv rau txhua yam los ntawm cov txheej txheem ruaj khov mus rau cov foob ua npuas ncauj yooj ywm, txawm tias lub log thiab lub log tsheb. Tsis tas li ntawd, DMTDA tuaj yeem siv rau ntawm lub tsheb, kev tsim kho, kev khawb av, textile, cov menyuam luam ntawv, lub log trolley, cov nplaum thiab kev lag luam hluav taws xob.
Ntim: 25kg, 200kg / hlau nruas. lossis IBC TANK.
Kev Khaws Cia thiab Kev Thauj Mus Los: Tsis txhob cia dej kov. Khaws kom deb ntawm tshav ntuj.
Lub sijhawm khaws cia: 12 lub hlis
| Khoom | Cov Ntawv Qhia |
| Qhov tsos | Lub teeb daj rau daj pob tshab kua |
| tsw ntxhiab | Zoo li Amine |
| Cov ntsiab lus ntawm tag nrho Diamine | 99% feeb |
| Dimethylthiotoluenediamine | 95% feeb |
| Monomethylthiotoluenediamine | 4% siab tshaj |
| Trimethylthiotoluenediamine | 1% siab tshaj |
| Cov ntsiab lus TDA | 0.1% siab tshaj |
| Xim, Gardner xim nplai | 2-8 |
| Tus nqi Amine (mgKOH / g) | 520-540 |
| Cov dej noo (%) | 0.1% siab tshaj |
| 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. | CAS 91-97-4 |
| 15. | TEOF CAS 122-51-0 |
| 16. | MOCA CAS 101-14-4 |
| 17. | PTSI CAS 4083-64-1 |
| 18. | thiab lwm yam ... |
