Khatisong ea liphutheloana, 'mala oa bokamorao o atisa ho hatisoa pele ho ntlafatsa boleng bo phahameng ba mokhabiso oa paterone le ho phehella boleng bo phahameng ba sehlahisoa.Ts'ebetsong e sebetsang, ho fumanoe hore tatellano ena ea khatiso e na le tšekamelo ea ho kristale ka enke.Lebaka la sena ke lefe?
1, E le ho finyella semelo se khanyang le se khanyang, lesela la enke hangata le hatisoa le letenya kapa le hatisoa hape hang kapa ka khatello e eketsehileng ea khatiso, 'me oli e omeletseng e eketsoa nakong ea khatiso.Le hoja lera la enke le koahela ka ho feletseng mochine oa khatiso, ho omisa ka potlako ho fella ka lera le boreleli haholo la enke holim'a enke ea khatiso ka mor'a ho thehoa ha filimi, ho etsa hore ho be thata ho hatisa hantle, joaloka khalase.Sena se etsa hore enke e hatisoe ka mokhoa o sa leka-lekaneng kapa o se khonehe ho hatisoa ka botlalo.Enke ea oli e hatisitsoeng sekoahelong (stack) e fana ka lifaha tse kang kapa tse fokolang tsa mebala ea khatiso holim'a 'mala oa motheo,' me khokahanyo ea enke e fokola, e meng ea eona e ka hlakoloa.Indasteri ea khatiso e e bitsa filimi ea enke ea crystallization, vitrification, kapa mirrorization.
E le ho ntlafatsa ho hlaka ha litšoantšo le litemana, bahlahisi ba bangata ba kentse oli ea silicone ho mekhoa ea enke lilemong tsa morao tjena.Leha ho le joalo, oli e feteletseng ea silicone hangata e baka shrinkage e otlolohileng ea filimi ea enke.
Hona joale ho na le maikutlo a 'maloa a fapaneng ka mabaka a crystallization ea lifilimi tsa enke.Ho ea ka khopolo ea crystallization, crystallization ke mokhoa oa ho etsa likristale ho tloha mokelikeli (mokelikeli kapa o qhibilihisitsoeng) kapa boemo ba khase.Ntho eo ho qhibiliha ha eona ho fokotsehang haholo ka mocheso o ntseng o theoha, 'me tharollo ea eona e ka fihlang ho tlala le ho phatsima ka ho pholisoa;Ntho eo ho qhibiliha ha eona ho fokotsehang ha thempereichara e ntseng e fokotseha, e phatsima ha metsoako e meng e fetoha mouoane ebe e kokobela.Batho ba bang ba lumela hore crystallization ea liphutheloana tsa khatiso ea litšoantšo le litemana (lesela la filimi ea enke) e bitsoa recrystallization ... Sistimi ea filimi ea khatiso ea enke e entsoe ka mouoane oa solvent (evaporation) ebe o pholile, o tsejoang hape e le recrystallization.
2, Batho ba bang ba lumela hore crystallization (crystallization) ea enke ea khatiso ea liphutheloana e bakoa haholo-holo ke crystallization ea li-pigments tsamaisong ea enke.
Rea tseba hore ha likristale tsa pigment li le anisotropic, boemo ba tsona ba kristale bo tšoana le nale kapa molamu.Ha ho etsoa filimi ea enke, tataiso ea bolelele e hlophisoa habonolo hammoho le tataiso ea phallo ea resin (lintho tse kopanyang) tsamaisong, e leng se bakang ho fokotseha ho hoholo;Leha ho le joalo, ha ho na tlhophiso ea tataiso nakong ea kristallise ea spherical, e bakang shrinkage e nyane.Li-pigments tse sa bonahaleng lits'ebetsong tsa enke tsa khatiso hangata li na le likristale tse chitja, joalo ka enke ea khatiso ea cadmium, e nang le shrinkage e nyane (crystallization).
The particle size e boetse e ama molding shrinkage rate le molding shrinkage ratio.Ha likaroloana tsa pigment li le kholo kapa li le nyane ho isa tekanyong e itseng, sekhahla sa ho nyenyefala ha ho bopa le karo-karolelano ea shrinkage ke tse nyane ka ho fetisisa.Ka lehlakoreng le leng, li-resin tse nang le likristale tse kholo le libopeho tse chitja li bonts'a ho putlama ho honyenyane, ha li-resin tse nang le likristale tse kholo le libopeho tse se nang chitja li bonts'a ho fokotseha ho hoholo ha ho bōptjoa.
Ka bokhutšoanyane, ho sa tsotellehe hore na ke motsoako o fokolang oa li-pigments tsa mebala kapa ho kopanya ho kopanya ha leseli la mebala, tšebeliso e nepahetseng ea li-pigments ha e amane feela le sebopeho sa bona sa lik'hemik'hale, empa hape e itšetlehile haholo ka thepa ea bona ea 'mele, e kang kabo ea boholo ba kristale. liketsahalo tsa condensation, tharollo e tiileng, le lintlha tse ling tse susumetsang;Hape re lokela ho etsa tlhahlobo e hlokang leeme ea melemo le bofokoli ba li-pigment tsa inorganic le organic, e le hore li phele hammoho, 'me tse qetellang li tšoere maemo a mantlha.
Ha u khetha enke ea khatiso ea liphutheloana (pigment), ho boetse hoa hlokahala hore u nahane ka matla a eona a mebala (ho hasana hantle, ho eketsa matla a ho mebala, empa ho na le moeli o fetang oo matla a mebala a tla fokotseha) Matla a koahelang (litšobotsi tsa ho monya). ea pigment ka boeona, phapang ea index ea refractive lipakeng tsa pigment le resin binder e hlokahalang bakeng sa mebala, boholo ba likaroloana tsa pigment, mofuta oa kristale oa pigment, le symmetry ea sebopeho sa limolek'hule tsa pigment li phahame ho feta tsa symmetrical. foromo e tlase ea kristale).
Matla a koahelang a mofuta oa kristale a maholo ho feta a sebopeho sa molamu, 'me matla a ho koahela a li-pigment tse nang le kristale e phahameng e kholo ho feta ea li-pigment tse nang le kristale e tlaase.Ka hona, matla a ho koahela a filimi ea enke ea khatiso ea khatiso, ho na le monyetla o moholo oa hore khalase e hlolehe.Ho hanyetsa mocheso, ho hanyetsa ho falla, ho hanyetsa boemo ba leholimo, ho hanyetsa ho qhibiliha, le ho sebelisana le li-polymers (li-resin ka har'a mekhoa ea enke ea oli) kapa li-additives li ke ke tsa nyenyefatsoa.
3, Basebelisi ba bang ba lumela hore khetho e fosahetseng le eona e ka baka liphoso tsa crystallization.Ke hobane enke ea motheo e omella ka thata haholo (ka ho feletseng), e baka ho fokotseha ha matla a mahala.Hona joale, haeba nako ea polokelo ka mor'a ho hatisa 'mala o le mong e le nako e telele haholo, mocheso oa workshop o phahame haholo, kapa ho na le li-desiccants tse ngata tsa khatiso, haholo-holo cobalt desiccants, haeba mekhoa ea ho omisa ka potlako le e matla, e kang ho omisa, e sebelisoa, ketsahalo ea crystallization. tla etsahala.
Nako ea poso: Nov-22-2023
