Kev faib tawm thiab kev ntsuas ntawm polyurethane thickenters

Raws li tus tseem ceeb ntxiv rau hauv cov txheej txheem ntxiv, inks thiab txhua yam tshuaj lom neeg txhua hnub, polyurethane thickeners tau txuas ntxiv rau hauv kev lag luam teb nyob rau hauv lub xyoo tsis ntev los no. Nws cov teeb meem rawv tshwj xeeb cov teeb meem ua rau nws ib qho tseem ceeb rau kev ua kom zoo cov khoom siv. Kab lus no yuav soj ntsuam cov kev faib tawm ntawm polyurethane thickeners los ntawm kev pom ntawm cov qauv tshuaj thiab tshawb ntau hom kev thov cov xwm txheej.

Cov tsis yog-ionic polyurethane thickeners yog cov kev xaiv tseem ceeb hauv cov khoom tsis yog-polar. Hom thickener tuab ntawm hydrogen kev sib txuas ntawm hydrophobic pawg thiab polymer chains, thiab yog haum rau cov tshuab dej thiab cov dej. Nws qhov zoo dua yog tias nws yog qhov tsis txaus siab rau PH thiab electrolytes thiab yog ruaj khov nyob rau hauv cov txheej txheem tsheb thiab muaj cov txheej txheem tiv thaiv. Qee cov khoom lag luam high-end-end kuj tseem muaj cov khoom siv tshuaj tiv thaiv kab mob antimicrobial, uas tuaj yeem txuas ntxiv rau lub neej txee ntawm cov khoom.

Anionic Polyurethane Thickeners tau zoo dua ntawm cov khoom siv dej raws li cov qauv. Los ntawm kev qhia cov carboxylic acid pawg, hom tuab no nthuav dav micelles nyob rau hauv Alkaline tej yam kev mob, nce lub viscosity ntawm lub system. Cov cuab yeej kos duab kos duab thiab cov ntawv luam ntawv textile proses yog nws cov ntawv thov raug cai. Nws yog tsim nyog sau tseg tias anionic cov khoom lag luam yog nkag siab txog calcium ions thiab yuav tsum tau siv nrog cov dispersants nyob rau hauv ib puag ncig dej nyuaj.

Cationic Polyurethane Thickeners yog ib qho tseem ceeb tab sis cov ceg tshaj lij. Lawv cov luas qaib ammonium ntsev qauv muab lawv cov khoom zoo tshaj plaws, thiab lawv muaj qhov chaw hauv cov khoom lag luam thiab tshuaj tua kab mob. Cov tshiab tsim hyperbranched cationic therenters tau ua tiav cov kev cuam tshuam zoo ntawm cov tshuaj tsawg.

Hybrid polyurethane thickeners coj mus rau hauv tus account ntau txoj kev ua tau los ntawm kev sib txuas cov qauv molecular ntawm cov nqi sib txawv. Hom khoom no muaj kev ua tau zoo nyob rau hauv lub tshav xim looj cov xim zoo, thiab tuaj yeem hloov kho cov khoom sib txuam ua ke thaum muab qhov zoo thixotropy. Qee cov khoom kuj tseem ua ke txhawb nqa tus neeg sawv cev qib ib zaug kom yooj yim rau cov txheej txheem qauv qauv.

Raws li cov kev cai ib puag ncig ua cov stricter, cov khoom siv qis (volatile organic sib xyaw) polyurethane thickeners tau dhau los ua cov kev tshawb fawb thiab kev loj hlob hotspot. Los ntawm kev qhia cov txheej txheem xyoob ntoo thiab ua cov txheej txheem synthemes, ib tiam tshiab cov khoom lag luam yog ua lub luag haujlwm tseem ceeb hauv kev ntsuab ntawm cov txheej txheem. Nyob rau hauv lub neej yav tom ntej, nrog kev nkag ntawm nanotechnology, polyurethane thickeners yuav tsum tau qhib cov xwm txheej tshiab hauv thaj chaw ntawm cov chaw ntse.