PTFE Dispersion Emulsion
Teflon nta thiab siv:
Emulsion polymerization ntawm polytetrafluoroethylene (PTFE), los yog dispersion polymerization, yog ib qho aqueous dispersion ntawm PTFE. Nws muaj cov ntsiab lus ntawm li ntawm 60% thiab yuav siv tau rau impregnation ntawm fabrics thiab porous hlau, ua films, hlau coatings thiab lwm yam substrates. Txheej, thiab lwm yam.
Lub ntiaj teb dispersion yog stabilized los ntawm ib tug non-ionic sizing uas muaj kev tsis zoo cov nqi colloidal particles hauv dej. Cov kev sib sau ua ke yog khoob khoob khawm thiab muaj ib qhov luaj li cas ntawm 0.15 rau 0.17 um. Qhov ntsuas ntawm 20 ° C yog kwv yees li 5 X 10-3 Pa • s, thiab cov pH muaj li 10 los yog li ntawd. Nws cov viscosity yuav tau tom los ntawm kev ntxiv rau ib qho dej caw los yog dej distilled. Yuav kom txo cov pH, me ntsis organic acid xws li acetic acid yuav ntxiv. Txawm li cas los xij, ceev faj thaum muab cov kua qaub. Thaum cov siab concentration ntawm ions reached, tus dispersion yuav condense. Lub PTFE aqueous dispersion muaj lub txee ntev ntawm 20 ° C, tab sis nws yuav precipitate rau hauv qab ntawm lub nkoj thiab yuav tsum tau maj mam tom qab ib lub lim piam ntawm sawv.
Cov Kev Qhia:
Yam khoom | Chav tsev | Nominal tus nqi |
Tsos | - | Ntsuab dawb los sis daj |
PTFE ntsiab lus | % | 58 ~ 62 |
Surfactant | % | 4.0 ~ 7.0 |
pH | - | 8 ~ 10 |
Viscosity | x 10 .3 Pa.S | 20 ~ 40 |
Cim npe nrov: ptfe dispersion emulsion, lwm tus neeg, hais, nqe, yuav
