N,N,N',N'-Tetramethylethylenediamine (BDMAEE)** yog ib qho tshuaj siv dav davpolyurethane catalystpaub txog nws qhov kev ua tau zoo thiab kev ua haujlwm zoo hauv kev tsim ntau hom polyurethane ua npuas ncauj. Cov organic compound no, nrog rau cov mis molecular C6H16N2, ua lub luag haujlwm tseem ceeb hauv kev tsim cov polyurethane ua npuas ncauj mos, feem ntau siv rau hauv rooj tog, ntaub pua chaw pw, rooj zaum hauv tsheb, thiab lwm yam kev siv uas cuam tshuam nrog kev nplij siab.
Cov yam ntxwv ntawm BDMAEE
1. Kev Ua Haujlwm Zoo ntawm Catalytic: BDMAEE yog ib qho tshuaj amine catalyst zoo heev, ua rau cov tshuaj tiv thaiv ntawm isocyanates thiab polyols tsim polyurethane yooj yim dua. Nws cov khoom muaj zog ua rau cov txheej txheem tsim polyurethane sai dua, ua kom cov tshuaj tiv thaiv sai thiab tiav.
2. Kev Sib Haum Xeeb: BDMAEE sib haum nrog ntau hom polyurethane formulations. Nws tuaj yeem siv ua ke nrog lwm cov catalysts los kho cov khoom ntawm cov ua npuas ncauj, xws li qhov ceev, qhov tawv, thiab kev ywj pheej.
3. Kev Hloov Pauv: Cov tshuaj catalyst no muaj qhov kub qis, uas ua rau nws haum rau cov ntawv thov uas xav tau lub sijhawm kho sai. Txawm li cas los xij, qhov kev hloov pauv no kuj xav tau kev ua tib zoo tuav kom txo qis cov pa phem thiab xyuas kom muaj kev nyab xeeb thaum lub sijhawm tsim khoom.
4. Kev Ruaj Ntseg Hydrolytic: BDMAEE paub txog nws qhov kev ruaj ntseg hydrolytic zoo heev, uas txhais tau tias nws tseem ua haujlwm tau zoo txawm tias muaj dej noo. Tus cwj pwm no yog qhov tshwj xeeb tshaj yog nyob rau hauv cov chaw tsim khoom noo noo lossis hauv cov ntawv thov uas cov ua npuas ncauj yuav raug dej noo.
Daim Ntawv Thov Txoj Cai ntawmBDMAEEua npuas ncauj mos
Kev tsim cov ua npuas polyurethane mos mos muaj kev sib npaug zoo ntawm cov tshuaj lom neeg thiab cov txheej txheem lub cev. BDMAEE ua lub luag haujlwm tseem ceeb hauv kev ua tiav cov yam ntxwv ua npuas xav tau los ntawm cov txheej txheem hauv qab no:
1. Kev Ua Kom Gelling: BDMAEE ua rau muaj kev ua kom gelling ntawm cov khoom polyol thiab isocyanate. Qhov kev ua no tsim cov kev sib txuas urethane uas muab cov qauv ntawm cov ua npuas ncauj. Qhov nrawm ntawm kev ua kom gelling cuam tshuam ncaj qha rau cov qauv ntawm cov ua npuas ncauj, qhov ceev, thiab cov khoom siv kho tshuab.
2. Kev Tawg: Ntxiv rau qhov kev tawg gelling, BDMAEE kuj tseem ua rau muaj kev tawg, qhov twg dej cuam tshuam nrog isocyanate los tsim cov pa roj carbon dioxide. Cov pa roj no tsim cov npuas hauv cov polymer matrix, tsim cov qauv cellular ntawm cov ua npuas ncauj. Qhov sib npaug ntawm cov kev tawg gelling thiab kev tawg, cuam tshuam los ntawm BDMAEE, yog qhov tseem ceeb rau kev ua tiav cov qauv cell sib xws thiab qhov mos xav tau.
3. Kev Kho Kom Zoo Dua Cov Khoom Ua Npuas Ncauj: Los ntawm kev kho qhov concentration ntawm BDMAEE, cov chaw tsim khoom tuaj yeem tswj cov nqi tshuaj tiv thaiv, uas ua rau cuam tshuam rau qhov ntom ntom, elasticity, thiab resilience ntawm cov npuas ncauj. Piv txwv li, qhov concentration ntau dua ntawm BDMAEE tuaj yeem ua rau lub sijhawm kho sai dua thiab cov qauv cell zoo dua, thaum qhov concentration qis dua yuav tsim cov npuas ncauj mos dua, elastic dua.
4. Kev Ruaj Ntseg thiab Kev Sib Xws: Qhov kev ruaj khov hydrolytic ntawm BDMAEE ua kom muaj kev ua tau zoo sib xws thoob plaws ntau pawg ntawm cov ua npuas ncauj. Qhov kev ntseeg siab no yog qhov tseem ceeb rau kev tsim khoom loj qhov twg kev sib xws hauv cov khoom ua npuas ncauj yog qhov tseem ceeb rau kev siv kawg.
Xaus lus
BDMAEE yog ib qho tseem ceeb hauv kev tsim cov ua npuas polyurethane mos, muab kev ua haujlwm zoo, kev sib haum xeeb, thiab kev ruaj khov. Nws lub peev xwm los sib npaug cov tshuaj gelling thiab blowing ua rau cov chaw tsim khoom tsim cov ua npuas zoo nrog cov khoom tshwj xeeb uas tsim rau ntau yam kev siv. Kev nkag siab txog cov yam ntxwv thiab cov ntsiab cai ntawm kev siv BDMAEE pab txhim kho cov txheej txheem tsim ua npuas, kom ntseeg tau tias muaj kev ua tau zoo tshaj plaws hauv cov khoom kawg.
Lub sijhawm tshaj tawm: Lub Xya Hli-08-2024