Lub cim tshwj xeeb ntawm sublimation luam tawm thaj ua rau thaj yog nyob rau hauv lawv cov ntawv tsis yog -nto. Es tsis txhob tsuas luam cov qauv mus rau saum npoo, lawv siv cov cua sov hloov mus rau cov xim molecules kom nkag mus rau cov fiber ntau, ua tiav kev sib sib zog nqus ntawm cov qauv thiab cov ntaub. Cov txheej txheem no tso siab rau cov khoom siv hluav taws xob ntawm thermal sublimation, dhau mus rau theem kev hloov pauv thiab molecular migration los ntawm cov khoom mus rau cov pa thiab rov qab mus rau hauv cov khoom kub. Qhov no ua rau cov xim uas tsis yog tsuas yog vibrant tab sis kuj tiv taus fading thiab tev tawm lub sijhawm.
Lub hauv paus ntsiab lus pib nrog kev xaiv ntawm sublimation number case. Cov number case no feem ntau siv cov xim uas tuaj yeem hloov pauv ncaj qha los ntawm cov khoom rau cov roj ntawm qhov kub thiab txias, feem ntau disperse dyes, uas muaj cov qauv molecular ruaj khov thiab muaj xim saturation. Thaum lub sij hawm tsim khoom, tus qauv tsim yog thawj zaug luam tawm rau hauv daim ntawv tshwj xeeb uas siv sublimation number case. Nyob rau theem no, cov dye tseem nyob ntawm daim ntawv raws li cov khoom siv, thiab cov duab kos tiav pom ntawm qhov muag liab qab. Daim ntawv hloov pauv tsis yog tsuas yog nqa tus qauv xwb tab sis kuj tseem tswj hwm tus nqi tso tawm thiab kev taw qhia ntawm tus number case los ntawm nws cov txheej thaum lub sij hawm kub nias, tiv thaiv ntxov ntxov evaporation los yog diffusion poob siab.
Lub tshav kub nias theem yog lub hauv paus ntawm tag nrho cov mechanism. Thaum cov ntawv hloov pauv thiab cov substrate tau pub rau hauv cov xovxwm kub lossis xovxwm kub, cov cuab yeej siv qhov ntsuas kub thiab siab zoo -feem ntau ntawm 190 txog 210 degrees Celsius-thiab tswj qhov kub thiab txias rau qee lub sijhawm. Qhov kub siab ua rau cov xim ntawm cov ntawv hloov mus sai sai nqus cua sov thiab sublimate rau hauv cov pa roj. Tsav los ntawm lub siab thiab cua sov, cov pa roj carbon monoxide molecules nkag mus rau qhov sib txawv me me ntawm cov fibers ntawm cov substrate, diffusing raws cov fiber ntau thiab cov pores sab hauv. Vim tias cov saw hlau molecular ntawm polyester fibers yog nplua nuj nyob rau hauv qhov chaw uas tuaj yeem khi rau cov zas xim, cov pa roj carbon monoxide yog adsorbed thaum sib cuag nrog cov fibers thiab re-condenses rau hauv cov khoom, yog li raug kaw hauv cov qauv fibers. Cov txheej txheem no zoo ib yam li "cog" cov xim rau hauv cov fiber ntau, es tsis yog "thaum xim" rau nws.
Cov khoom siv ntawm lub substrate txiav txim siab qhov zoo ntawm cov nyhuv sublimation. Polyester fibers, vim lawv cov qauv molecular compact thiab muaj zog affinity rau disperse dyes, yog zoo tagnrho substrates; ntuj fibers xws li paj rwb, tsis muaj qhov sib txuas qhov chaw, ua rau nws nyuaj rau dyes kom nkag mus tau zoo, uas ua rau cov qauv uas nquag plam los yog tev tawm. Yog li ntawd, lub hauv paus ntaub rau sublimation luam tawm thaj ua rau thaj yog feem ntau yog ua los ntawm 100% polyester los yog siab -polyester sib tov kom ntseeg tau tias cov xim molecules yog sib npaug thiab ruaj khov tom qab kub nias.
Tom qab kub nias, daim ntawv hloov pauv cais tawm ntawm lub hauv paus ntaub, thiab cov qauv tau raug xa mus rau lub thaj. Thaum lub sij hawm txias, cov xim yog tsau nyob rau hauv cov fibers, tsim ib tug ruaj khov qauv nrog colourfastness ze rau ntawm lub hauv paus ntaub nws tus kheej. Txawm tias tom qab rov qab ntxuav, txhuam, lossis khoov, tus qauv tsis tuaj yeem tawg lossis ploj vim tias cov xim tsis yog qhov chaw ntxiv lawm -txuas tab sis coexisting nrog cov fibers.
Lub hauv paus ntsiab lus ntawm sublimation luam tawm thaj ua rau thaj yog siv cov sublimation thiab recondensation ntawm dyes nyob rau hauv meej kub tswj thiab cov khoom txuam, hloov lub tiaj tus tsim rau hauv ib tug breathable ib feem ntawm cov ntaub, tso cai rau cov kev pom thiab tactile kev nyob twj ywm vibrant lub sij hawm thiab siv.
