Tag: Polyurethane hmoov txheej
Polyaspartic Txheej Technology
Chemistry yog ua raws li cov tshuaj tiv thaiv ntawm aliphatic polyisocyanate thiab polyaspartic ester, uas yog aliphatic diamine. Cov thev naus laus zis no tau pib siv nyob rau hauv cov pa roj carbon monoxide ob-tivthaiv polyurethane hnyav-yob txheej formulations vim hais tias cov polyaspartic esters yog cov zoo heev reactive diluents rau siab solids polyurethane coatings Ntau tsis ntev los no kev loj hlob nyob rau hauv polyaspartic txheej txheej technology muaj concentrated nyob rau hauv kev ua tau zoo tsawg los yog zero-zero VOC coatings qhov twg cov polyaspartic. ester yog qhov tseem ceeb ntawm cov co-reactant rau cov tshuaj tiv thaiv nrog polyisocyanate. Qhov tshwj xeeb thiabNyeem ntxiv…
Dab tsi yog Polyurea Txheej thiab Polyurethane Txheej
Polyurea Txheej thiab Polyurethane Coatings Polyurea txheej Polyurea txheej yog qhov tseem ceeb ntawm ob lub ntsiab lus raws li Amine terminated prepolymer crosslinked nrog Isocyanate uas tsim cov urea linkages. Kev sib txuas ntawm cov polymers reactive tshwm sim ntawm qhov nrawm nrawm ntawm qhov kub thiab txias. Feem ntau cov tshuaj tiv thaiv no tsis tas yuav muaj cov catalyst. Txij li thaum lub lauj kaub-lub neej ntawm xws li txheej yog nyob rau hauv vib nas this; yam tshwj xeeb ntawm Plral Cov tshuaj tsuag phom yog xav tau los ua daim ntawv thov. Cov txheej txheem tuaj yeem tsim txog li 500 mus rauNyeem ntxiv…
Dab tsi yog Moisture-kho polyurethane
Dab tsi yog Moisture-kho polyurethane Moisture-kho polyurethane yog ib feem polyurethane uas nws kho yog pib ib puag ncig noo noo. Cov dej noo-kho tau polyurethane feem ntau muaj cov isocyanate-terminated pre-polymer. Ntau hom pre-polymer tuaj yeem siv los muab cov khoom tsim nyog. Piv txwv li, isocyanate-terminated polyether polyols yog siv los muab kev yooj yim vim lawv qhov kub hloov pauv iav qis. Kev sib xyaw cov ntu mos, xws li polyether, thiab ntu nyuaj, xws li polyurea, muab cov tawv tawv zoo thiab ua kom yooj yim ntawm cov txheej. Ntxiv mus, cov khoom kuj yog tswj los ntawmNyeem ntxiv…
Ob lub tswv yim tsim cov txheej txheem nrog tshwj xeeb mar kuj
Muaj ob lub tswv yim muaj rau kev tsim cov txheej txheem nrog tshwj xeeb mar kuj. Lawv tuaj yeem ua kom tawv txaus kom cov khoom sib yuav tsis nkag mus rau hauv qhov chaw; los yog Lawv tuaj yeem ua kom elastic txaus kom rov zoo tom qab kev ntxhov siab raug tshem tawm. Yog hais tias lub tswv yim hardness raug xaiv, lub txheej yuav tsum muaj qhov tsawg kawg nkaus hardness. Txawm li cas los xij, cov txheej txheem zoo li no tuaj yeem ua tsis tiav los ntawm kev tawg. Cov yeeb yaj kiab yooj yooj yim yog qhov tseem ceeb cuam tshuam rau kev puas tsuaj puas. Siv 4-hydroxybutyl acrylate hloovNyeem ntxiv…