Ke lumela hore batho ba bangata ba tšoenyehile haholo ka bothata bo ntseng bo fela ba polasetikiMekotla ea lisebelisoa tsa EVA, joale ke eng e etsang hore mekotla ea lisebelisoa e fele? Ho fela ha lihlahisoa tsa polasetiki tse mebala ho amana le ho hanyetsa khanya, ho hanyetsa oksijene, ho hanyetsa mocheso, ho hanyetsa acid le alkali ea li-pigment le dae, le thepa ea resin e sebelisitsoeng. A re e hlahlobeng ka bokhutšoanyane ka tlase.
1. Acid le alkali resistance Ho fela ha lihlahisoa tsa polasetiki tse mebala ho amana le khanyetso ea lik'hemik'hale ea colorant (acid le alkali resistance, redox resistance).
Mohlala, bofubelu ba molybdenum chromium bo hanana le ho hlapolla acid, empa bo na le kutloelo-bohloko ho alkali, 'me bosehla ba cadmium ha bo hanyetsane le asiti. Li-pigment tsena tse peli le resin ea phenolic li na le phello e matla ea ho fokotsa mebala e itseng, e ama ka botebo ho hanyetsa mocheso le ho hanyetsa boemo ba leholimo ba mebala le ho baka ho fela.
2. Antioxidation: Li-pigments tse ling tsa manyolo li nyamela butle-butle ka lebaka la ho senyeha ha li-macromolecules kapa liphetoho tse ling ka mor'a hore ho be le oxidation.
Ts'ebetso ena e kenyelletsa oxidation ea mocheso o phahameng nakong ea ts'ebetso le oxidation ha o kopana le li-oxidants tse matla (joalo ka chromate e mosehla oa chromium). Ha matša, li-azo pigments le chrome yellow li kopantsoe, 'mala o mofubelu o tla fela butle-butle.
3. Ho tsitsisa ha mocheso oa li-pigment tse thibelang mocheso ho bolela tekanyo ea ho lahleheloa ke boima ba mocheso, ho fifala, le ho fela ha 'mala tlas'a mocheso oa mocheso.
Li-pigment tsa inorganic li entsoe ka li-oxide tsa tšepe le letsoai, tse nang le botsitso bo botle ba mocheso le ho hanyetsa mocheso o phahameng. Li-pigments tse entsoeng ka metsoako ea lintho tse phelang li tla ba le liphetoho mohahong oa limolek'hule le palo e nyenyane ea ho bola ka mocheso o itseng. Haholo-holo bakeng sa lihlahisoa tsa PP, PA, le PET, mocheso oa ho sebetsa o ka holimo ho 280 ° C. Ha re khetha li-colorants, ka lehlakoreng le leng, re tlameha ho ela hloko ho hanyetsa mocheso oa pigment, 'me ka lehlakoreng le leng, re lokela ho nahana ka nako ea ho hanyetsa mocheso oa pigment. Nako ea ho hanyetsa mocheso hangata ke 4-10 pula. .
4. Lightfastness Ho khanya ha mebala ho ama ka ho toba ho fela ha lihlahisoa.
Bakeng sa lihlahisoa tsa ka ntle tse pepesehetseng khanya e matla, boemo bo bobebe (ho chesa letsatsi) ba 'mala o sebelisitsoeng ke pontšo ea bohlokoa. Haeba boemo ba lightfastness bo fokola, sehlahisoa se tla fela ka potlako nakong ea tšebeliso. Sekhahla sa ho hanyetsa khanya se khethiloeng bakeng sa lihlahisoa tse hanyetsanang le boemo ba leholimo ha sea lokela ho ba ka tlase ho boemo ba botšelela, 'me ho molemo ho khetha maemo a supileng kapa a robeli. Bakeng sa lihlahisoa tsa ka hare, boemo ba bone kapa bohlano bo ka khethoa.
Ho hanyetsa ha leseli la resin ea carriers ho boetse ho na le tšusumetso e kholo phetohong ea 'mala. Ka mor'a hore resin e khantšitsoe ke mahlaseli a ultraviolet, sebōpeho sa eona sa limolek'hule sea fetoha 'me' mala oa fela. Ho eketsa li-stabilizers tse kang li-ultraviolet absorbers ho masterbatch ho ka ntlafatsa ho hanyetsa ha mebala le lihlahisoa tsa polasetiki tse mebala.
Nako ea poso: Jul-05-2024