Kodi mitundu ya pulasitiki iyenera kukhala ndi chiyani?

Hue, kupepuka, ndi machulukitsidwe ndi zinthu zitatu zamtundu, koma sikokwanira kusankhapulasitiki colorants kokha zochokera zinthu zitatu za mtundu.Nthawi zambiri ngati utoto wa pulasitiki, mphamvu yake yopangira utoto, mphamvu yobisala, kukana kutentha, kukana kusamuka, kukana nyengo, kukana zosungunulira ndi zinthu zina ziyenera kuganiziridwanso, komanso kulumikizana kwa utoto ndi ma polima kapena zowonjezera.
(1) Kutha kupaka utoto mwamphamvu
Mphamvu ya tinting ya colorant imatanthawuza kuchuluka kwa pigment yomwe imafunikira kuti munthu apeze mtundu wina wamtundu, wofotokozedwa ngati kuchuluka kwa mphamvu ya tinting yachitsanzo chokhazikika, ndipo amagwirizana ndi mawonekedwe a pigment ndi kubalalitsidwa kwake.Posankha mtundu, nthawi zambiri pamafunika kusankha mtundu wokhala ndi mphamvu zopendekera kuti muchepetse kuchuluka kwa utoto.

(2) Mphamvu yophimba yolimba.
Mphamvu yobisalira yamphamvu imatanthawuza kuthekera kwa pigment kuphimba mtundu wakumbuyo wa chinthucho ikagwiritsidwa ntchito pamwamba pa chinthucho.Mphamvu yobisala imatha kufotokozedwa mowerengeka ndipo ndi yofanana ndi kuchuluka kwa pigment (g) yofunikira pagawo lililonse pomwe mtundu wakumbuyo waphimbidwa.Nthawi zambiri, inorganic pigment imakhala ndi mphamvu zotchingira zolimba, pomwe ma organic pigment amaonekera komanso alibe mphamvu zophimba, koma amatha kukhala ndi mphamvu zophimba akagwiritsidwa ntchito limodzi ndi titanium dioxide.

(3) Kukana kutentha kwabwino.
Kutentha kukana kwa inki amatanthauza kusintha mtundu kapena katundu wa inki pa processing kutentha.Nthawi zambiri, kukana kutentha kwa pigment kumafunika kukhala 4 ~ 10min.Nthawi zambiri, ma inorganic pigment amalimbana bwino ndi kutentha ndipo sizosavuta kuwola pa kutentha kwa pulasitiki, pomwe ma organic pigment samatha kutentha.

(4) Kukana kusamuka kwabwino.
Kusuntha kwa pigment kumatanthawuza chodabwitsa kuti zinthu zapulasitiki zamitundu nthawi zambiri zimalumikizana ndi zolimba zina, zakumwa, mpweya ndi zinthu zina, ndipo inkiyi imachoka mkati mwa pulasitiki kupita kumalo aulere a chinthucho kapena zinthu zomwe zimalumikizana nazo.Kusamuka kwa mitundu mu mapulasitiki kukuwonetsa kusagwirizana pakati pa utoto ndi utomoni.Nthawi zambiri, inki ndi ma organic pigment amakhala ndi madzi ambiri, pomwe ma inorganic pigment amakhala ndi madzi ochepa.

(5) Kukana kuwala kwabwino komanso kukana nyengo.
Kuwala komanso kusinthasintha kwanyengo kumatanthawuza kukhazikika kwamtundu pansi pa kuwala ndi chilengedwe.Kuthamanga kwa kuwala kumagwirizana ndi kapangidwe ka maselo a colorant.Mitundu yosiyanasiyana imakhala ndi mamolekyu osiyanasiyana komanso kupepuka.

(6) Good acid kukana, kukana alkali, zosungunulira kukana ndi kukana mankhwala.
Zogulitsa zamapulasitiki zamafakitale nthawi zambiri zimagwiritsidwa ntchito posungira mankhwala ndikunyamula mankhwala monga ma acid ndi alkalis, kotero kukana kwa asidi ndi alkali kwa inki kuyenera kuganiziridwa.