Abubuwan da ake watsewa sune abubuwan da ake amfani da su don tabbatar da tsayayyen barbashi a cikin kafofin watsa labarai kamar adhesives, fenti, robobi da gaurayawan robobi.
A da, sutura ba ta buƙatar masu rarrabawa. Tsarin kamar alkyd da fenti nitro ba sa buƙatar masu rarrabawa. Masu watsawa ba su bayyana ba har sai fentin resin acrylic da fentin guduro polyester. Har ila yau, wannan yana da dangantaka da ci gaban pigments, saboda aikace-aikace na high-end pigments ba za a iya raba daga taimakon dispersants.
Abubuwan da ake watsewa sune abubuwan da ake amfani da su don tabbatar da tsayayyen barbashi a cikin kafofin watsa labarai kamar adhesives, fenti, robobi da gaurayawan robobi. Ɗayan ƙarshensa shine sarkar warwarewa wanda za'a iya narkar da shi a cikin kafofin watsa labaru daban-daban, kuma ɗayan ƙarshen shine rukuni na pigment anchoring wanda za'a iya adsorbed a saman nau'i-nau'i daban-daban kuma ana amfani dashi don canzawa zuwa wani m / ruwa dubawa (pigment / guduro bayani).
Maganin guduro dole ne ya shiga cikin sarari tsakanin pigment agglomerates. All pigments sun kasance a matsayin pigment agglomerates, wadanda "tarin" na pigment barbashi, tare da iska da danshi kunshe a cikin ciki sarari tsakanin mutum pigment barbashi. Barbashi suna cikin hulɗa da juna a gefuna da sasanninta, kuma hulɗar da ke tsakanin barbashi yana da ƙananan ƙananan, don haka waɗannan dakarun za a iya shawo kan su ta hanyar kayan aiki na yau da kullum. A daya bangaren kuma, aggregates sun fi karamci, kuma akwai haduwa ta fuska da fuska a tsakanin nau’in nau’in nau’in pigment, don haka yana da matukar wahala a tarwatsa su zuwa gabobin farko. A lokacin aikin niƙa mai rarraba pigment, pigment agglomerates a hankali ya zama ƙarami; madaidaicin halin da ake ciki shine don samun ɓangarorin farko.
Za'a iya raba tsarin niƙa pigment zuwa matakai uku masu zuwa: mataki na farko shine wetting. A ƙarƙashin motsawa, ana fitar da duk iska da danshi a saman pigment kuma a maye gurbinsu da maganin guduro. Mai watsawa yana inganta wettability na pigment, juya m / gas dubawa a cikin wani m / ruwa dubawa da kuma inganta nika yadda ya dace; Mataki na biyu shine ainihin tsarin niƙawar launin launi. Ta hanyar tasirin makamashi na inji da ƙarfin ƙarfi, pigment agglomerates sun karye kuma an rage girman barbashi zuwa ɓangarorin farko. Lokacin da pigment aka bude ta inji karfi, da dispersant zai yi sauri adsorb da kunsa kananan barbashi size barbashi; a mataki na uku na ƙarshe, tarwatsewar pigment ɗin dole ne ya tsaya tsayin daka don hana samuwar flocculation mara ƙarfi.
Yin amfani da mai watsawa mai dacewa zai iya kiyaye ɓangarorin pigment a nesa mai dacewa daga juna ba tare da maido da lamba ba. A mafi yawan aikace-aikace, ana son tsayayyen yanayi mara kyau. A wasu aikace-aikace, rarrabuwar launin launi na iya zama karɓaɓɓu a ƙarƙashin yanayin yanayin coflocculation mai sarrafawa. Taimakon wetting na iya rage bambance-bambancen tashin hankali na saman tsakanin pigment da maganin guduro, yana haɓaka jiko na pigment agglomerates ta guduro; tarwatsa kayan taimako suna haɓaka kwanciyar hankali na tarwatsa pigment. Sabili da haka, samfurin iri ɗaya sau da yawa yana da ayyuka na duka kayan jika da tarwatsawa.
Watsawa mai launi tsari ne daga tara zuwa tarwatsewar jihar. Yayin da girman barbashi ya ragu kuma wurin ya karu, makamashin farfajiyar tsarin kuma yana ƙaruwa.
Tun da tsarin makamashi na tsarin shine tsarin ragewa ba tare da bata lokaci ba, mafi yawan bayyanar da karuwa a sararin samaniya, ana buƙatar karin makamashi don amfani da shi daga waje yayin aikin nika, kuma ana buƙatar ƙarfafa tasirin mai rarraba don kula da kwanciyar hankali na watsawa na tsarin. Gabaɗaya, inorganic pigments da ya fi girma barbashi masu girma dabam, ƙananan takamaiman surface yankunan, da kuma mafi girma polarity surface, don haka suna da sauki tarwatsa da kuma tabbatar da; yayin da daban-daban Organic pigments da carbon baki da karami barbashi masu girma dabam, ya fi girma takamaiman surface yankunan, da ƙananan surface polarity, don haka ya fi wuya a tarwatsa da kuma tabbatar da su.
Saboda haka, masu rarrabawa galibi suna ba da nau'ikan ayyuka guda uku: (1) haɓaka jigon pigment da haɓaka haɓakar niƙa; (2) rage danko da haɓaka daidaituwa tare da kayan tushe, haɓaka mai sheki, cikawa da bambancin hoto, da haɓaka kwanciyar hankali na ajiya; (3) ƙara ƙarfin tinting pigment da haɓakar pigment da haɓaka kwanciyar hankali na launi.
Sabon Kayayyakin Reborn Nanjing yana bayarwawetting dispersant wakili ga fenti da coatings, ciki har da wasu waɗanda suka dace da Disperbyk.
In labari na gaba, Za mu bincika nau'ikan masu rarrabawa a lokuta daban-daban tare da tarihin ci gaban masu rarraba.
Lokacin aikawa: Afrilu-25-2025