Polyurethane elastomers yog los thaiv cov polymers, uas yog, polyurethane macromolecules yog tsim los ntawm "nqe mos" thiab "seg nyuaj" thiab tsim ib tug micro-phase cais qauv, nyob rau hauv uas cov ntu nyuaj (los ntawm isocyanates thiab saw extenders) yog dispersed nyob rau hauv cov mos mos. ntu theem cheeb tsam (los ntawm oligomer polyols) los ua lub luag haujlwm ntawm lub cev sib txuas cov ntsiab lus.Yog li, piv nrog lwm cov roj hmab hluavtaws (elastomers), polyurethane elastomers muaj zog zoo dua thiab hnav tsis kam, Siab elongation tseem tuaj yeem khaws cia thaum lub hardness siab.
Cov ntaub ntawv elastic polyurethane, hu ua "CASE" txawv teb chaws, feem ntau suav nrog cov khoom lag luam polyurethane elastomer, cov ntaub ntawv paving xws li polyurethane yas khiav, polyurethane waterproof coatings, nplaum, sealants, potting adhesives, thiab lwm yam., accounting txog li 40% ntawm tag nrho cov nyiaj. ntawm cov khoom siv polyurethane.Feem ntau ntawm cov khoom kho mob ntawm CASE cov ntaub ntawv (dej-raws li thiab hnyav raws li cov khoom tom qab tshem tawm cov dej thiab cov kuab tshuaj) yog cov ntaub ntawv uas tsis yog npuas elastic polyurethane.PU hluavtaws tawv cob, ib co coatings thiab adhesives yog cov kuab tshuaj los yog dej-raws li cov khoom, uas kuj yuav xam tau tias yog polyurethane elastomer cov ntaub ntawv nyob rau hauv ib tug dav dav.Hauv kev nkag siab nqaim, polyurethane elastomers xa mus rau castable polyurethane elastomers (CPU), thermoplastic polyurethane elastomers (TPU) thiab sib xyaw polyurethane elastomers (MPU), suav txog 10% lossis tsawg dua ntawm tag nrho cov nyiaj ntawm polyurethane.CPU thiab TPU yog lub ntsiab polyurethane elastomers, thiab lawv qhov sib txawv nyob hauv cov txheej txheem tsim khoom thiab cov saw txuas ntxiv.Hom tshuaj polyurethane elastomer, tseem hu ua "polyurethane roj hmab", belongs rau ib hom tshwj xeeb ntawm hluavtaws roj hmab.High-performance polyurethane elastomer yog qhov zoo tshaj plaws hnav-resistant cov ntaub ntawv ntawm tag nrho cov hluavtaws polymer cov ntaub ntawv, hu ua "tus huab tais ntawm hnav tsis kam", thiab yog dav siv nyob rau hauv ntau lub teb, thiab daim ntawv thov tshiab tseem nthuav.
Polyurethane elastomer tuaj yeem siv los hloov cov hlau, yas thiab cov roj hmab zoo tib yam hauv qee qhov chaw.
Piv nrog cov ntaub ntawv hlau, polyurethane elastomer muaj qhov zoo ntawm lub teeb yuag, tsis muaj suab nrov, hnav tsis kam, tsis tshua muaj nqi ua haujlwm thiab acid corrosion kuj.Muab piv nrog cov yas, nws muaj qhov zoo ntawm kev ua haujlwm siab thiab siab hnav tsis kam.Piv nrog rau cov roj hmab zoo tib yam, polyurethane elastomer muaj qhov zoo ntawm hnav tsis kam, txiav tsis kam, tsim kua muag tsis kam, siab muaj peev xwm, ozone tsis kam, thiab lwm yam, thiab yog ib qho yooj yim los tsim, yuav potted, poured, thiab muaj ntau yam hardness.
Post lub sij hawm: Feb-14-2023