Viscosity yog qhov taw qhia tseem ceeb uas macroscopically qhia txog cov ntaub ntawv ntawm cov tshuaj tiv thaiv poly Cov khoom siv, lub polyurethane exepromer, yuav nce raws li, uas yuav coj kev nyuaj rau cov haujlwm ntau lawm.
Cov laj thawj tseem ceeb rau kev nce hauv viscosity ntawm polyurethane prepomer cov ntaub ntawv yog:
1.Qhov kev xaiv lossis cov txheej txheem ntawm cov khoom siv raw, vim tias cov fluidity ntawm polyester hauv polyerethane ua ntej, lawv txoj kev ua haujlwm kuj tsis zoo; Yog tias koj yuav tsum xaiv polyester prefolders rau cov tshuaj tiv thaiv, koj tuaj yeem xaiv polyester tsis muaj txiaj ntsig, cov nyhuv yuav zoo dua; Tau kawg, koj tseem tuaj yeem siv cov semi- prepperoation txheej txheem los hloov cov tsis zoo nqa los ntawm polyester prepperers.
2.Qhov kev txiav txim siab ntawm cov kev sib piv ntawm cov ntaub ntawv raw, hauv qhov sib piv ntawm cov khoom siv raw yuav ua kom nrawm dua cov tshuaj tiv thaiv thiab cov khoom siv viscosity. Yog li ntawd, qhov sib piv ntawm ntu nyuaj rau ntu mos yog kho tau, thiab tom qab ntawd lawv cov kev sib piv yog txiav txim los ntawm kev sim.
3.Qhov kev xaiv ntawm cov tshuaj tiv thaiv kub thiab sijhawm, ntau dua qhov tshuaj tiv thaiv kub lossis lub sijhawm ntev ntawm polymerization ntawm cov khoom siv thiab cov viscorizity ntawm cov khoom. Qhov kev sib npaug ntawm qhov sib npaug ntawm cov tshuaj tiv thaiv kub thiab sijhawm yuav tsum tau hloov kho los ntawm kev sim.
Nyob rau hauv chav kawm ntawm ntau cov kev ntsuam xyuas, ib txoj kev ntawm yuav ua li cas kho lub viscosity tau kos. Tshwj xeeb, thaum cov khoom siv tshuaj tiv thaiv rau qee yam, tus nqi ntawm cov khoom siv tsis tau los txiav txim siab nws tus nqi ntawm lub sijhawm ua ntej, thiab piv nrog lub pre- Tsim tau pom tias nws nyob ze. Yog tias tus nqi nco txog yog ze rau tus qauv tsim, txias thiab npaj rau kev sib raug zoo ntawm cov kev sim tshuaj thiab cov qauv tshuaj tiv thaiv ntawm cov khoom siv tshuaj tiv thaiv kab mob polyurethane nyob rau hauv me me lossis sim theem.
Tsis tas li ntawd, kev sib raug zoo ntawm viscosity ntawm polyurethane prepomer thiab tus nqi noco tau txiav txim siab los ntawm kev sim ua haujlwm thiab sim kev sim. Raws li lawv txoj kev sib raug zoo sib piv, thiab nyob rau hauv ntau ntau qhov tshwj xeeb piv txwv, kev ceev ntawm tus agitator tau ntsuas, thiab cov qauv viscosity thiab kev ceev ntawm agitator tau ua. Daim duab ntawm kev sib txheeb ntawm viscosity / Nco tus piv txwv thiab kev ceev ntawm cov kauj ruam.Qhov kev tsim nyog rau loj ntawm polyurethane kev npaj tos muaj zog polyurethane.