Hollow iav microspheres rau xim filling
Hollow iav microspheres yog iav microspheres nrog tsawg ntom, lub teeb yuag thiab siab zog. Vim yog cov yam ntxwv hollow, piv nrog cov iav hlaws zoo tib yam, nws muaj cov yam ntxwv ntawm lub teeb yuag, tsis muaj qhov ntom ntom thiab zoo thermal rwb thaiv tsev ua haujlwm. Cov txheej txheem yog ncaj qha ntxiv rau txheej txheej txheej, yog li cov txheej txheem txheej txheem tsim los ntawm kev kho cov txheej txheem muaj thermal rwb thaiv tsev. Ntxiv rau nws qhov nqus roj tsawg thiab qhov ntom ntom, ntxiv 5% (wt) tuaj yeem nce cov khoom tiav los ntawm 25% mus rau 35%, yog li tsis nce lossis txawm txo cov nqi ntim ntawm cov txheej.
Hollow iav microspheres raug kaw hollow spheres, uas tau ntxiv rau hauv txheej los tsim ntau lub microscopic ywj siab thermal rwb thaiv tsev kab noj hniav, yog li zoo heev txhim kho cov rwb thaiv tsev ntawm txheej zaj duab xis tiv thaiv tshav kub thiab suab thiab ua lub luag haujlwm zoo hauv kev rwb thaiv tsev kub thiab suab nrov txo. Ua kom cov txheej txheem dej ntau dua, tiv thaiv fouling thiab tiv thaiv corrosion. Lub chemically inert nto ntawm microbeads yog resistant rau tshuaj corrosion. Thaum cov zaj duab xis yog tsim, cov particles ntawm lubiav microbeads Cov txheej txheem zoo sib xws los tsim cov porosity tsawg, yog li cov txheej txheej saum npoo tsim cov yeeb yaj kiab tiv thaiv uas muaj kev cuam tshuam ntawm cov dej noo thiab corrosive ions, uas plays lub luag haujlwm zoo hauv kev tiv thaiv. nyhuv.
Cov qauv kheej kheej ntawm hollow iav hlaws dai ua rau nws muaj qhov cuam tshuam zoo rau kev cuam tshuam quab yuam thiab kev ntxhov siab. Ntxiv nws rau txheej txheej tuaj yeem txhim kho qhov cuam tshuam ntawm cov zaj duab xis txheej thiab tuaj yeem txo qhov thermal expansion thiab contraction ntawm txheej. ntawm kev ntxhov siab tawg.
Zoo dua whitening thiab shading nyhuv. Cov hmoov dawb muaj qhov ua kom zoo dua qub dua li cov xim zoo tib yam, txo cov nqi ntawm lwm cov khoom siv kim thiab cov xim (piv nrog titanium dioxide, cov nqi ntim ntawm microbeads tsuas yog li 1/5) Txhim kho qhov adhesion ntawm txheej txheej kom pom tseeb. Cov yam ntxwv ntawm cov roj tsawg ntawm cov iav microbeads tso cai rau ntau cov resin los koom rau hauv cov yeeb yaj kiab tsim, yog li ua kom cov adhesion ntawm txheej los ntawm 3 mus rau 4 zaug.
Ntxiv 5% ntawm microbeads tuaj yeem ua rau txheej txheej ntom ntom ntawm 1.30 mus rau qis dua 1.0, yog li txo cov txheej txheej hnyav thiab zam qhov tshwm sim ntawm phab ntsa txheej txheej.
Microbeads muaj qhov cuam tshuam zoo ntawm cov kab hluav taws xob ultraviolet, tiv thaiv cov txheej los ntawm yellowing thiab aging.
Lub siab melting point ntawm microbeads zoo heev txhim kho qhov kub thiab txias ntawm cov txheej thiab plays lub luag haujlwm zoo heev hauv kev tiv thaiv hluav taws. Cov thooj me me ntawm cov microbeads ua lub luag haujlwm ntawm cov kabmob, thiab kev sib txhuam quab yuam me me, uas tuaj yeem txhim kho cov txheej txheem ntws ntawm txheej txheej thiab ua rau kev tsim kho yooj yim dua.
Cov lus pom zoo rau kev siv: Tus nqi ntxiv yog 10% ntawm tag nrho qhov hnyav. Cov microbeads yog nto-kho thiab muaj qhov ntom ntom, uas ua rau cov txheej txheem tuaj yeem nce viscosity thiab ntab thaum khaws cia. Peb pom zoo kom nce cov viscosity thawj zaug ntawm txheej (los ntawm kev nce qhov ntxiv ntawm cov thickener tswj cov viscosity saum 140KU), qhov no, qhov tshwm sim ntab yuav tsis tshwm sim vim qhov viscosity tsawg dhau, thiab cov khoom ntawm txhua yam khoom siv hauv cov khoom. Lub kaw lus raug txo qis hauv kev ua haujlwm vim qhov siab viscosity, uas yog qhov zoo los tswj cov viscosity. ruaj khov. Peb pom zoo kom siv cov qauv hauv qab no: vim hais tias cov microbeads muaj cov phab ntsa nyias nyias thiab tsis tshua muaj shear tsis kam, thiaj li yuav siv tag nrho cov yam ntxwv hollow ntawm microbeads, nws raug nquahu kom siv txoj kev sib ntxiv zaum kawg, uas yog, muab cov microbeads rau ntawm qhov chaw. kawg ntawm qhov sib ntxiv yog dispersed los ntawm stirring cov cuab yeej nrog tsawg ceev thiab tsawg shear quab yuam kom ntau li ntau tau. Vim hais tias cov duab kheej kheej ntawm microbeads muaj fluidity zoo thiab kev sib txhuam ntawm lawv tsis loj, nws yooj yim rau disperse. Nws tuaj yeem moistened kiag li nyob rau hauv ib lub sij hawm luv luv, tsuas yog ncua lub sij hawm stirring kom ua tau zoo dispersion.
Microbeads yog chemically inert thiab non-toxic. Txawm li cas los xij, vim nws qhov hnyav hnyav heev, yuav tsum tau saib xyuas tshwj xeeb thaum ntxiv nws. Peb pom zoo kom ib kauj ruam ntxiv rau txoj kev, uas yog, tus nqi ntawm txhua qhov sib ntxiv yog 1/2 ntawm cov microbeads ntxiv, thiab maj mam ntxiv, uas tuaj yeem tiv thaiv cov microbeads zoo dua los ntawm ntab mus rau hauv huab cua thiab ua kom cov khoom tawg yooj yim dua.
