EVA khoom yog dab tsi? Kev tsom xam ntawm cov yam ntxwv thiab kev siv ntawm EVA cov ntaub ntawv
EVA yog cov khoom siv ntau heev thiab siv dav hauv kev lag luam tshuaj, EVA yog dab tsi? Hauv tsab xov xwm no, peb yuav qhia meej txog cov yam ntxwv tseem ceeb ntawm EVA, cov txheej txheem tsim khoom thiab nws daim ntawv thov hauv kev lag luam sib txawv los pab koj nkag siab zoo dua cov khoom siv ntau yam no.
Ua ntej, lub ntsiab txhais thiab muaj pes tsawg leeg ntawm EVA
EVA (ethylene vinyl acetate copolymer) yog cov khoom siv polymer ua los ntawm cov khoom siv copolymerisation ntawm ethylene thiab vinyl acetate (VA). Nws cov qauv tshuaj txiav txim siab nws qhov kev hloov pauv zoo heev, tshuaj tiv thaiv thiab tsis tshua muaj melting point.Cov yam ntxwv ntawm EVA tuaj yeem hloov kho los ntawm kev hloov cov ntsiab lus ntawm vinyl acetate, cov ntsiab lus siab dua, qhov zoo dua qhov yooj ntawm cov khoom, tab sis cov neeg kho tshuab lub zog yog txo.
Thib ob, cov txheej txheem tsim khoom ntawm EVA
EVA ntau lawm feem ntau yog los ntawm kev kub siab polymerisation cov tshuaj tiv thaiv. Nyob rau hauv cov txheej txheem polymerization, ethylene thiab vinyl acetate ntawm qhov kub thiab txias thiab kev kub siab los ntawm cov dawb radical pib copolymerization, tsim cov nqi sib txawv ntawm VA EVA resin. Kev hloov kho ntawm cov txheej txheem tsim khoom tuaj yeem cuam tshuam qhov kev ua tau zoo ntawm cov khoom siv, piv txwv li, cov ntsiab lus vinyl acetate siab dua tuaj yeem txhim kho cov pob tshab thiab softness ntawm EVA, EVA resin tuaj yeem ua tiav rau hauv zaj duab xis, ntawv lossis cov ntaub ntawv ua npuas dej, siv ntau yam kev lag luam.
Thib peb, cov yam ntxwv tseem ceeb ntawm EVA cov ntaub ntawv
EVA cov khoom siv dav siv vim nws lub cev thiab tshuaj lom neeg tshwj xeeb. Nws muaj qhov ua tau zoo thiab elasticity, txawm tias qhov kub thiab txias tuaj yeem nyob twj ywm mos.EVA muaj kev cuam tshuam zoo heev thiab kev puas tsuaj, uas ua rau nws xav tau kev ua haujlwm ntev thiab kev tiv thaiv ntawm daim ntawv thov kev ua tau zoo heev.EVA cov khoom kuj muaj kev tiv thaiv zoo rau ultraviolet rays thiab tshuaj tiv thaiv, uas ua rau nws haum rau siv sab nraum zoov.
Plaub, thaj chaw thov ntawm EVA cov ntaub ntawv
Tom qab nkag siab tias cov khoom siv EVA yog dab tsi, cia peb saib nws cov ntsiab lus ntawm daim ntawv thov, EVA cov khoom siv dav siv hauv kev tsim cov khau, tshwj xeeb tshaj yog nyob rau hauv kev tsim cov khau khiab thiab midsoles, vim nws cov cushioning zoo thiab cov yam ntxwv ntawm lub teeb pom kev zoo, EVA kuj tseem siv rau hauv kev lag luam ntim, ua los ntawm kev tiv thaiv ua npuas ncauj lossis zaj duab xis, siv hauv cov khoom siv hluav taws xob, cov khoom siv hluav taws xob thiab cov khoom siv hluav taws xob maj mam nce ntxiv. EVA tseem maj mam nce nws cov kev siv hauv kev lag luam kho mob, feem ntau yog siv los ua cov hnab ntim tshuaj thiab cov tshuaj ntim tshuaj.
Thib tsib, kev txhim kho yav tom ntej ntawm EVA cov ntaub ntawv
Nrog rau kev txhim kho ntawm ib puag ncig kev paub, EVA cov ntaub ntawv kuj tseem nyob rau hauv kev coj ntawm kev txhim kho kom ruaj khov. Degradable EVA cov ntaub ntawv tshawb fawb yog nyob rau hauv tag nrho viav vias, yav tom ntej tej zaum yuav qhia ntau tus phooj ywg EVA cov ntaub ntawv kom tau raws li qhov xav tau ntawm ntau qhov chaw. Nrog rau kev nce qib ntawm kev tshawb fawb thiab thev naus laus zis, kev ua haujlwm ntawm EVA cov ntaub ntawv yuav tsum tau ua kom zoo dua qub, qhib cov ntawv thov ntau dua.
Xaus
EVA yog cov khoom siv nrog kev ua haujlwm zoo thiab ntau yam kev siv. Los ntawm kev taw qhia ntawm kab lus no, koj yuav tsum muaj kev nkag siab ntau ntxiv ntawm qhov teeb meem ntawm "dab tsi yog EVA khoom". Txawm hais tias hauv lub neej niaj hnub, cov khoom lag luam, lossis cov khoom siv kho mob, cov ntaub ntawv EVA ua lub luag haujlwm tseem ceeb. Nyob rau hauv lub neej yav tom ntej, nrog kev nce qib ntawm kev siv technology thiab kev tiv thaiv ib puag ncig, kev siv cov ntaub ntawv EVA yuav yog qhov kev cia siab ntau dua.