DiMethylthiotoluenediaMine (DMTDA) cas 106264-79-3
DimethylthioToluene Diamie / DMTDA, lambarka CAS. 106264-79-3, waa daawo diamines ah oo loogu talagalay nidaamyada TDI iyo MDI labadaba. Ahaanshaha dareere fiiqan heerkulka qolka waxay keentaa faa'iidooyin farsamayn oo muhiim ah, tusaale ahaan wareejinta fudud, diyaar u ah in la isticmaalo iyada oo aan la dhalaalin walxaha adag sida MOCA sameyso. DMTDA waa wakiil daaweyn ku habboon oo loo isticmaalo in lagu sameeyo elastomers polyurethane/polyurea oo waara oo dabacsan.
DMTDA waxay noqon kartaa wakiil daaweyn iyo fidiye silsilad ah oo loogu talagalay diisocyanate pre-polymers, gaar ahaan nidaamka polyurea oo bixiya sifooyin farsamo iyo firfircoon oo wanaagsan. DMTDA waa wakiil daaweyn caalami ah oo lagu daro diamines kale oo dareere ah, tusaale ahaan DETDA, si loo kala saaro heerarka daaweynta iyo sifooyinka farsamada si loo daboolo shuruudaha kala duwan. Sidaa darteed, waxaa jira codsi ballaaran oo DMTDA ah oo ku saabsan giraangiraha polyurethane, taayirada, casters-ka, rollers-ka, dahaarka elastomeric iyo wixii la mid ah. Waxaad ka heli kartaa alaabada DMTDA-saldhig ahaan meel kasta, oo ay ku jiraan dhismaha, macdanta, baabuurta, elektaroonigga, dharka iyo meelaha daabacaadda.
Si ka duwan MOCA, 4,4'-Methylenebis(2-chloroaniline), DMTDA looma tuhunsana inay keento kansar. Waa mid deegaanka u fiican, aan sun ahayn oo ammaan u ah shaqaaluhu inay la macaamilaan inta lagu jiro farsamaynta. Faa'iidooyinka ay leedahay in lagu jiro qaab dareere ah, DMTDA ma keeni doonto wax boodh sun ah, qiiq ama uumi ah inta ay shaqaynayso. Sidaa darteed, shaqaaluhu lama kulmi doonaan khatarta marka ay la macaamilayaan DMTDA. Waqtiyadii hore, soosaarayaasha polyurethane ee EU waxay MOCA u isticmaalaan sidii wakiilka ugu weyn ee daaweynta nidaamyada polyurethane ee ku salaysan TDI sababtoo ah qiimo jaban, waxqabad aad u fiican oo ku saabsan xoogga jiidista, adkeysiga, adkeysiga iyo iska caabbinta xoqidda. Si loo ilaaliyo shaqaalaha iyo deegaanka, dalal badan ayaa mamnuucay isticmaalka MOCA, sidaas darteed, waxay ku qasbeysaa soosaarayaasha polyurethane inay helaan beddelka MOCA, DMTDA, oo sidoo kale loo yaqaan MOCA dareere ah. DMTDA waxay meesha ka saartaa inta badan khataraha caafimaad ee la xiriira maaraynta MOCA waxayna bixisaa sifooyin jireed oo heer sare ah marka la barbar dhigo polyurethanes/polyureas elastomers ee ku salaysan MOCA.
Waxaa jira faa'iido kale oo muhiim ah oo DMTDA ay leedahay marka la barbar dhigo MOCA. Maadaama DMTDA ay ku jirto qaab dareere ah, waxay u oggolaanaysaa in lagu shaqeeyo heerkul ka hooseeya kan MOCA. Iyada oo aan lahayn habka dhalaalinta taas oo lagama maarmaan u ah MOCA, waxaad badbaadin kartaa kharash tamar badan inta lagu jiro wax soo saarka. Suurtagalnimada in la adkeeyo laguma sameeyo weelasha isku darka ama mashiinnada isku darka. Intaa waxaa dheer, waxaa lagu maarayn karaa heerkul ka hooseeya kan MOCA xaaladdeeda dareeraha ah. Miisaanka u dhigma ee DMTDA waa 107 marka la barbar dhigo MOCA waa 133.5. Tani waxay ka dhigan tahay in 20% hoos loo dhigo miisaanka prepolymer-ka isla stoichiometer-ka.
DMTDA waxaa loo isticmaalaa sidii wakiilka daaweynta PU. Waxay hoos u dhigi kartaa dhaqdhaqaaqa kooxda "NH2", sidaas darteed, si loo dheereeyo cimriga dheriga inta la shubayo.
DMTDA, oo ah dareere heerkulka qolka ku jira waxay keentaa faa'iido weyn oo habayn ah marka la barbar dhigo MOCA, dhalaalka adkaha waa mid aan loo baahnayn. Sidoo kale, qaabkeeda dareeraha ah wuxuu u oggolaanayaa in lagu farsameeyo prepolymer heerkul ka hooseeya kan MOCA iyo iyada oo aan la adkeyn inta lagu jiro isku darka. DMTDA waxay leedahay miisaan u dhigma 107 marka la barbar dhigo 133.5 ee MOCA. Taas macnaheedu waa in qiyaastii 20% ka yar miisaanka loo baahan yahay prepolymer la bixiyay isla stoichiometry.
Isbarbardhigga Sifooyinka Jireed ee Prepolymer-ka lagu daaweeyay DMTDA & MOCA
Sifooyinka jireed ee prepolymer-ka, labada nooc ee ether iyo ester-ka, marka lagu daaweeyo wakiilka daaweynta DMTDA, waxay la mid yihiin kuwa ku salaysan MOCA. Sida nidaamka daaweynta MOCA, sifooyinka jireed waxay u nugul yihiin saamiga (stoichiometry) ee daaweynta prepolymer-ka. DMTDA daaweynta waxay u dulqaadataa kala duwanaanshaha stoichiometry oo la mid ah kan MOCA. Stoichiomety hooseeya (80~90%) guud ahaan waxay u janjeertaa inay kordhiso iska caabbinta dejinta cadaadiska, halka stoichiomety sare (100-105%) ay u janjeerto inay kordhiso xoogga jeexjeexa iyo cimriga dabacsanaanta. Natiijooyinka ugu wanaagsan ee inta badan codsiga waxaa laga helaa qiyaastii 95% stoichiometry. In kasta oo xaaladaha daaweynta (heerkulka iyo waqtiyada) ay la mid yihiin kuwa loo isticmaalo MOCA, daaweynta DMTDA waxay u baahan tahay fiiro gaar ah oo ku saabsan xaaladaha daaweynta ka dib si loo helo sifooyinka ugu badan ee jirka, gaar ahaan qalabka cadaadiska iyo sifooyinka firfircoon.
DMTDA waxaa si weyn loogu isticmaalaa nidaamyada dahaarka ee goobaha dayactirka dhismaha, baabuurta, badda iyo warshadaha. Dahaarka polyurethane-ka ku salaysan DMTDA wuxuu leeyahay waxqabad sare, sida adkeysi iyo dabacsanaan, xoog sare, biyo-celin, iska caabbinta cimilada, iska caabbinta xoqidda, iska caabbinta xoqidda iyo daxalka. Polyurethanes-ka ku salaysan DMTDA waxaa lagu dabaqi karaa farsamooyin dahaar oo kala duwan oo loo adeegsado substrates-ka, tusaale ahaan biraha, alwaaxa, sibidhka, dhagaxa iyo dusha sare ee balaastikada.
DMTDA waxaa sidoo kale loo isticmaali karaa sidii wakiilka daaweynta resin epoxy/qalabka dahaarka iyo PU elastomers, sida polyurethane iyo polyurea oo loo isticmaalo wax kasta laga bilaabo dahaarka sare ee waara ilaa shaabad xumbo dabacsan, xitaa giraangiraha iyo taayirada. Intaa waxaa dheer, DMTDA waxaa lagu dabaqi karaa gawaarida, dhismaha, macdanta, dharka, duubayaasha daabacaadda, giraangiraha trolley-ga, dhejisyada iyo warshadaha elektaroonigga ah.
Baakad: 25kg, 200kg/durbaan bir ah. ama TANK IBC.
Kaydinta iyo rarista: Ka fogow taabashada biyaha. Ka fogow iftiinka qorraxda.
Muddada kaydinta: 12 bilood
| Shay | Tusmada |
| Muuqaalka | Dareere hufan oo huruud khafiif ah ilaa jaalle ah |
| ur | Sida Amine-ka oo kale |
| Tusmada guud ee Diamine | 99%daqiiqad |
| Dimethylthiotoluenediamine | 95%daqiiqad |
| Monomethylthiotoluenediamine | 4% ugu badnaan |
| Trimethylthiotoluenediamine | 1% ugu badnaan |
| Tusmada TDA | 0.1% ugu badnaan |
| Midabka, miisaanka midabka Gardner | 2-8 |
| Qiimaha Amiin (mgKOH / g) | 520-540 |
| Qoyaanka (%) | 0.1% ugu badnaan |
| 1. | |
| 2. | |
| 3. | Polybutadiene-ka la joojiyay ee Hydroxyl-ka HTPB CAS 69102-90-5 |
| 4. | |
| 5. | |
| 6. | TDI 80/20 |
| 7. | Saldhigyada 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. | TEOF CAS 122-51-0 |
| 16. | MOCA CAS 101-14-4 |
| 17. | PTSI CAS 4083-64-1 |
| 18. | iwm... |
