Fakafonu lahi Resins faʻu ʻaki e malohi fakaʻata
ʻOku fakaʻata ʻe ultrasonic fakamovetevetea ʻa e lelei mo homogeneous incorporation ʻo nano fillers ki resins. ʻE faingofua pe hono tokangaʻi ʻe ultrasonic dispersers ʻa e tokanga lahi kae lava ke maʻu ha resins ʻoku fonu ʻi he teunga tau. ʻOku fenapasi ʻa e Sonication mo e faʻahinga resins angamaheni kotoa pe, polymers mo e fillers.
Fakafonu Resins mo e Polymers
ʻOku lahi hono fakaʻaongaʻi ʻo e resins mo e polymers ʻi hono ngaohi ʻo e ngaahi meʻa fakapisinisi coatings, vali, naunau pelesitiki pea pehe ki he saienisi ʻo e naunau. ʻIloa ko meʻa koʻeni, ʻoku kau ʻa e mixtures ko ʻeni ʻi he resins pe polymers, additives mo e fillers. Ko e Additives ko ha ngaahi konga ia hange ko e stabilizers mo e fillers, ʻa ia ʻoku ne ʻomi ʻa e fakatahatahaʻi ʻo e ngaahi ʻulungaanga makehe. Hange ko ʻeni, ʻe lava ʻe nano kihiʻi fillers ʻo fakamalohia ha composite ʻaki hono tanaki atu tensile malohi, fakafepaki, fakafepaki, fakapaaki ʻo e-tolonga pe ductility ki ha kiʻi angahala. ʻOku fakaʻaongaʻi ʻa e Stabilizers ke tauhi ʻaki hono fokotuʻutuʻu ʻo ha faitoʻo ki he maluʻi ʻi ha vahaʻataimi pea ʻi ha ngaahi tukunga kehekehe. ʻOku maʻu ʻe ha huhuʻa ʻoku fonu ʻaupito ʻa e ngaahi koloa makehe mei he faʻahinga fillers mo additives ʻoku fakaʻaongaʻi. Tautautefito ki he ngaahi momoʻi meʻa nano ʻoku ʻiloa ʻi honau ngaahi ʻulungaanga makehe mo e ivi fakamalohia lelei. Ko e fillers ʻoku lele lelei ko ha konga mahuʻinga ia ki he ngaahi naunau ngaue maʻolunga. Koeʻuhi ke lava ʻo fakakau ʻa e fillers ko ia ko ha ngaahi momoʻi meʻa ʻoku lele lelei ki resins mo polymer composites, ʻoku mahuʻinga ke tuifio kinautolu ko ha ngaahi momoʻi meʻa kuo fakamovetevete ki he composite. ʻOku fakaʻaongaʻi ʻa e ultrasonic fakamovetevete cavitational e ngaahi malohi ʻo e kili maʻolunga, ʻa ia deagglomerate mo e mill ʻi he nano-meʻafua ki he huhuʻa mo e polymers. Ultrasonic disperser faingofua hono fakaʻaongaʻi ʻo e ngaahi naunau viscous maʻolunga mo e kavenga fefeka. Ko hono ola, ʻoku fakatupu ʻe ultrasonic dispersers ha resins maʻolunga ange.
ʻE faingofua pe hono tokangaʻi ʻe Ultrasonic dispersers ʻa e ngaahi kavenga mo e viscosities maʻolunga pea ʻoku feʻunga ia mo hono ngaohi ʻo e resins mo e composites. ʻOku ha he fakatataa ʻa e ultrasonic laine disperser UIP16000hdt.
Ultrasonically faʻu resins mo composites ha ngaahi koloa maʻolunga ange koeʻuhi ko uniformly nano-fakamovetevete fillers. ʻI heʻetau fakatahaʻi ʻa e huhuʻa ʻoku lele lelei fillers ʻi he malumalu ʻo e ultrasonic, ʻoku hoko ai ʻa e fakatahatahaʻi ʻo e ngaahi fakaʻaliʻali ko ha ivi mo ha ngaue fakaʻofoʻofa mo ha ngaue hange ko e fakamamafaʻi ʻo e kalava, ʻuhila mo hono valaloto conductivity, ngaahi koloa mo e ductility.
ʻE lava ke fakaʻaongaʻi ʻa e ultrasonic dispersers ke maʻu ai ha ngaahi kulupu pule ʻo e resins kuo fakafonu lahi, polymers mo e composites kehe, ʻa ia ʻoku lelei ʻaupito hono fakahoko.
Ultrasonic hono ngaohi ʻo e resins lahi
ʻOku ʻiloa ʻa ultrasonic dispersers ʻi heʻenau malava ko ia ke ngaue lelei nano ngaahi momoʻi meʻa. Hielscher Ultrasonics ngaue maʻolunga ultrasonicators fakahaofi reliably amplitudes maʻolunga, ʻa ia ʻoku fie maʻu ke fakamovetevetea mo deagglomerate nano naunau uniformly ki hano fakamavaheʻi. ʻOku ʻikai ko ha palopalema ʻa e abrasiveness maʻolunga mo e tokanga lahi. ʻI heʻetau ultrasonic mai ki he niʻihi kehe, naʻa mo e viscous maʻolunga, ʻoku fakaʻaongaʻi ia ʻi he lavameʻa mo e ala falalaʻanga maʻolunga taha. Ko ia ai, ʻoku lelei ʻaupito ʻa e ultrasonic dispersers ki hono ngaohi ʻo e resins mo e composites.
ʻE lava ʻe ultrasonic dispersers ʻo matuʻuaki ha faʻahinga huhuʻa mo e polymer, hange ko e epoxy resins, Poliesita resins, vainolo esters, polymers mo e piokalafi-polymers, vali mo e coatings.
ʻE lava ke tanaki atu ha faʻahinga additives pe fillers ʻoku lele lelei kae lava ke maʻu ʻa e composite ʻo fakatatau mo hoʻo founga ngaue. ʻOku kau ʻi hono fakaʻaongaʻi angamaheni ʻo e fillers mo e additives ki he fakafonu resins ʻa e ngaahi momoʻi meʻa ʻoku fakahoko nano hange ko e CNTs, TiO2, SiO2, BaSO4, graphene, graphene oxide, Al2O3 nano platelets (corundrum), colour pigments etc.
ʻOku fakakau ʻa e fillers mo e additives ko ʻeni ki he resins kae lava ke ʻoange kiate kinautolu ha ngaahi ʻulungaanga maʻolunga ange hange ko e fakafepaki, tensile malohi, ili v fakafepaki, ʻikai ke talanoa, ductility, ngaahi koloa mo e ala meʻa pehe. ʻI ultrasonic fakamovetevete, ʻoku reliably mo reproducibly maʻu ai ʻa e ngaue makehe.
Ko e ultrasonic viviku-milling mo e fakamovetevetea ko ha founga lelei ʻaupito ia ki hono fakasiʻisiʻi e lahi ʻo e size, hange ko e TiO2
Technical drawing of the UIP4000hdT, a 4000 watts powerful industrial high-shear mixer for inline production of highly filled resins and nano composites.
Ultrasonic ta-ngaohiʻanga ʻo e resins kuo fakafonu lahi
ʻOku ʻomi ʻe Hielscher Ultrasonics ʻa e ngaue ki hono ngaohi ʻo e koloa pe ngaohiʻanga aleapau ʻo e resins. ʻOku tau fakaʻaongaʻi hotau ultrasonic dispersers ke maʻu ai ha ngaue maʻolunga resins ʻoku feʻunga mo e ngaahi fie maʻu ʻa hotau hoa aleapau.
ʻIkai ngata ai, ʻoku tau foaki bulks ʻo e ngaahi tuʻunga moʻui ʻoku fonu epoxy resins, ʻa ia CNTs, TiO2, SiO2 pe graphene ʻi ha ngaahi concentrations kehekehe kuo uniformly fakakau ʻi ultrasonic fakamovetevete. Kole mai ke mau maʻu ha fakamatala lahi ange fekauʻaki mo ʻemau resins kuo fakafonu pea mo ʻemau ngaahi ngaue ki hono ngaohi e koloa!
Malohi maʻolunga ultrasonic dispersers ki hono ngaohi ʻo e resins
Hielscher Ultrasonics ngaahi faʻufaʻu, ngaohiʻanga koloa mo tufaki ʻa e ngaue maʻolunga ultrasonic dispersers ki he ngaahi founga ngaue mamafa hange ko hono ngaohi ʻo e resins mo e composites. ʻOku fakaʻaongaʻi ʻa e Hielscher ultrasonicators ʻi he mamani ki dispersing nano ngaahi naunau ki resins, polymers, vali mo e ngaahi naunau ngaue maʻolunga kehe.
Ultrasonics 'o e Hielscher’ ʻe lava ʻe he ultrasonic lalahi processors ʻo fakahaofi hokohoko amplitudes. Amplitudes ʻo aʻu ki he 200μm ʻe faingofua pe ke lele ʻi he tafa 24/7. ʻOku fie maʻu ʻa e fili ko ia ke ngaue ʻaki ha ultrasonic disperser ʻi ʻolunga amplitudes pea ke liliu ʻa e amplitude ko ia ke liliu ʻa e tuʻunga ʻo e founga ngaue ultrasonic ki hono faʻu ʻo e resins mo e composites.
Ko e founga mahuʻinga ʻe taha Parameter ko e teke malohi. ʻI he ngaahi faingataʻa lahi, ʻoku fakautuutu ai e malohi ʻo ultrasonic cavitation mo hono ngaahi malohi ʻo e mamani. ʻE lava ke pressurized ʻa e ultrasonic ʻa Hielscher. ʻOku ʻi ai ha malohi pluggable sensor resistance uaea ki he misini uhila ultrasonic, ʻa ia ʻoku tauhi ai e ngaahi fakangatangata hange ko ultrasonic ivi, ʻea, malohi mo e taimi ki ha kaati SD.
ʻOku mahuʻinga hono vakaiʻi mo lekooti ʻo e fakamatala ki he founga hokohoko standardization mo e tuʻunga lelei ʻo e koloa. ʻI hoʻo hu ki he fakamatala ʻo e founga ngaue kuo lekooti he taimi pe ko ia, te ke lava ʻo toe fakaleleiʻi ʻa e sonication ki muʻa pea vakaiʻi ʻa e ola.
Ko ha founga anga fakakaumeʻa ʻe taha ko e browser ʻoku ne puleʻi ʻetau naunau fakaʻilekitulonika ultrasonic. ʻI he remote browser te ke lava ʻo kamata, taʻofi, liliu mo siofi hoʻo ultrasonic processor mei ha feituʻu pe.
'Oku 'omi 'e he e tepile 'i lalo ha faka'ilonga ia 'o e tu'unga 'o e ngaue ki he fakafuofua'i 'o e hotau ultrasonicators:
| Kulupu (batch) 'o e tohi | 'Oku tafe mai 'a e 'ea | 'Oku fokotu'u atu 'a e ngaahi me'angaue |
|---|---|---|
| mL 'i he 10 ki he 2000 | 20 ki he 400mL/miniti 'e | UP200Ht, UP400St |
| 0.1 ki he 20L | 0.2 ke 4L/miniti 'e | UIP2000hdT |
| 10 ki he 100L | 2 ki he 10L/miniti 'e | UIP4000hdT |
| n.a. | 10 ki he 100L/miniti 'e | UIP16000 |
| n.a. | lalahi | fakataha'i 'o e UIP16000 |
Ngaahi tohi/fakamo'oni fakafolofola
- Guo L. et al. (2018): Enhanced thermal conductivity of epoxy composites filled with tetrapod-shaped ZnO. RSC Advances, 2018, 8. 12337–12343.
- Brad W. Zeiger; Kenneth S. Suslick (2011): Sonofragmentation of Molecular Crystals. J. Am. Chem. Soc. 2011, 133, 37, 14530–14533.
- Poinern G.E., Brundavanam R., Thi-Le X., Djordjevic S., Prokic M., Fawcett D. (2011): Thermal and ultrasonic influence in the formation of nanometer scale hydroxyapatite bio-ceramic. Int J Nanomedicine. 2011; 6: 2083–2095.
Ngaue ultrasonics maʻolunga! ʻOku ʻufiʻufi ʻe he koloa ʻa Hielscher ʻa e tuʻunga kakato mei he fale fakatotolo fakakemi ultrasonicator ʻi he ngaahi ʻiuniti ʻi ʻolunga ki he ngaahi polokalama ultrasonic lalahi.