Dab tsi yog polyurethane ptmg?
Polyurethane PTMG (polyTetrahyDrofuran) yog ib qho tseem ceeb polyurethane raw khoom nrog cov yam ntxwv hauv qab no:
Cov qauv tshuaj thiab cov khoom:
PTMG yog polyether polyol uas nws cov qauv tshuaj muaj TetrahyDrofuran (Thf) rov ua dua cov qauv linear lossis ceg.
Nws muaj kev hloov tau zoo, huab cua tiv thaiv thiab tsis tshua muaj kub tau, thiab tsim nyog rau ntau hom polyurethane khoom.
Chaw Thov:
PTMG tau dav siv nyob rau hauv kev npaj ntawm polyurethane elastomers. Nws tuaj yeem siv ib leeg lossis sib xyaw nrog lwm cov polyols los kho lub cev thiab cov kws kho tshuab ntawm cov khoom.
PTMG yog ib qho ntawm cov ntaub ntawv tseem ceeb hauv kev tsim cov tshuaj, cov log tsheb, cov nplaum, cov khoom siv ua npuas ncauj.
Cov Qauv Hluavtaws:
PTMG tuaj yeem tau txais los ntawm Direct Polymerization ntawm TetrahyDrofroDan Monomers, lossis npaj los ntawm lub nplhaib-qhib polymerization ntawm cyclohexanedione thiab cyclohexanediol ntxiv cov khoom.
Hauv polyurethane synthesis, feem ntau yog siv los ua polyol kom hnov mob nrog cov diisocyanates los ua polyurethane ntu.
Lub cev lub cev:
PTMG muaj qhov qis melting point thiab yog yooj yim rau cov txheej txheem.
Nws muaj kev sib raug zoo zoo thiab tuaj yeem ua kom tiav nrog ntau yam ntawm isocyanates thiab lwm polyols.
Cuam tshuam ib puag ncig:
Kev tsim khoom thiab kev siv PTMG yog tus phooj ywg ib puag ncig. Vim nws cov tshuaj ruaj khov, txoj kev rhuav tshem tau qeeb qeeb, tab sis nws yog biodegradable nyob rau hauv qee qhov xwm txheej.
Kev Loj Hlob:
Nrog rau kev nce ntawm ib puag ncig kev paub, kev tshawb fawb thiab kev txhim kho PTMG tau tsiv mus rau kev txhim kho ntawm biodegradable ptmg derivatives.
Hauv kev ua haujlwm ntawm kev ua haujlwm siab polyurethane cov ntaub ntawv, daim ntawv thov ntawm PTMG yuav txuas ntxiv mus ua kom tau raws li cov kev xav tau ntau dua.
Raws li kev ua haujlwm ntau polyurethane raw khoom, PTMG muaj cov qauv tshuaj tshwj xeeb thiab kev ua tau zoo, uas ua rau nws dav siv hauv ntau daim teb.