litaba

Li-microsphere tsa khalase tse se nang lethole thepa ea tsona e kopaneng

Lisebelisoa tsa ho phaphamala tse matla haholo bakeng sa ts'ebeliso ea leoatle le tebileng ka kakaretso li entsoe ka mecha ea litaba e laolang ho phaphamala (li-microsphere tse se nang letho) le metsoako ea resin e matla haholo. Machabeng, lisebelisoa tsena li fihlella boima ba 0.4–0.6 g/cm³ le matla a ho hatella a 40–100 MPa, 'me li sebelisitsoe haholo lisebelisoa tse fapaneng tsa leoatle le tebileng. Li-microsphere tse se nang letho ke thepa e khethehileng ea sebopeho e tletseng khase. Ho latela sebopeho sa tsona sa thepa, li arotsoe haholo ka li-microsphere tse kopaneng tsa tlhaho le li-microsphere tse kopaneng tsa inorganic. Lipatlisiso mabapi le li-microsphere tse kopaneng tsa organic li sebetsa haholoanyane, ka litlaleho tse kenyeletsang li-microsphere tse se nang letho tsa polystyrene le li-microsphere tse se nang letho tsa polymethyl methacrylate. Lisebelisoa tse sebelisetsoang ho lokisa li-microsphere tse se nang lintho tse phelang li kenyelletsa haholo-holo khalase, li-ceramic, borates, carbon, le fly ash cenospheres.

Li-Microsphere tsa Khalase tse se nang letho: Tlhaloso le Sehlopha

Li-microsphere tsa khalase tse se nang letho ke mofuta o mocha oa thepa ea phofo e se nang tšepe e se nang lintho tse phelang e nang le litšobotsi tse ntle tse kang boholo ba likaroloana tse nyane, sebopeho se sephara, boima bo bobebe, ho thibela molumo, ho thibela mocheso, ho hanyetsa ho tsofala, le ho hanyetsa mocheso o phahameng. Li-microsphere tsa khalase tse se nang letho li 'nile tsa sebelisoa haholo linthong tsa lifofane, thepa ea polokelo ea haeterojene, thepa e tiileng ea ho phaphamala, thepa ea ho thibela mocheso, thepa ea kaho, le lipente le lipente. Ka kakaretso li arotsoe ka lihlopha tse peli:

① Li-cenospheres, tse entsoeng haholo-holo ka SiO2 le li-oxide tsa tšepe, li ka fumanoa ho tsoa moloreng o fofang o hlahisoang nakong ea tlhahiso ea motlakase lifemeng tsa motlakase tse chesang. Leha li-cenospheres li le theko e tlase, li na le bohloeki bo fokolang, kabo e pharaletseng ea boholo ba likaroloana, 'me haholo-holo, bongata ba likaroloana ka kakaretso bo feta 0.6 g/cm3, e leng se etsang hore li se ke tsa tšoaneleha bakeng sa ho lokisa thepa ea ho phaphamala bakeng sa ts'ebeliso ea botebo ba leoatle.

② Li-microsphere tsa khalase tse entsoeng ka maiketsetso, tseo matla a tsona, bongata ba tsona le thepa ea tsona ea fisik'hemik'hale li ka laoloang ka ho fetola liparamente tsa ts'ebetso le mekhoa ea thepa e tala. Leha li le theko e boima, li na le mefuta e mengata ea ts'ebeliso.

Litšobotsi tsa Li-Microspheres tsa Khalase tse se nang letho

Tšebeliso e pharaletseng ea li-microspheres tsa khalase tse se nang letho ka har'a thepa e tiileng ea ho phaphamala ha e aroloe le litšobotsi tsa tsona tse ntle.

①Li-microsphere tsa khalase tse se nang letholi na le sebopeho sa kahare se se nang letho, se fellang ka boima bo bobebe, ho ba le sekgahla se tlase, le ho tsamaisa mocheso o tlase. Sena ha se fokotse feela ho ba le sekgahla ha thepa e kopaneng haholo empa hape se li fa sekgahla se setle sa ho thibela mocheso, ho thibela molumo, ho thibela motlakase le thepa ea optical.

② Di-microsphere tsa khalase tse se nang letho di sebopeho se chitja, di na le melemo ya ho ba le masoba a tlase (setlatsetso se loketseng) le ho monngwa ha polymer hanyane ke di-sphere, ka hona ha di na tshusumetso e kgolo ho kgoneng ho phalla le ho teteana ha matrix. Dibopeho tsena di fella ka kabo e utlwahalang ya kgatello thepang e kopaneng, ka hona di ntlafatsa thatafalo ya yona, ho tiya le botsitso ba yona.

③ Li-microscope tsa khalase tse se nang letho li na le matla a phahameng. Ha e le hantle, li-microscope tsa khalase tse se nang letho ke li-circles tse tšesaane tse koetsoeng ka khalase e le karolo e ka sehloohong ea khetla, e bontšang matla a phahameng. Sena se eketsa matla a thepa e kopaneng ha ka nako e ts'oanang se boloka boima bo tlase.

Mekhoa ea ho Lokisetsa Li-Microspheres tsa Khalase tse Sekoti
Ho na le mekhoa e meraro e meholo ea ho lokisa:
① Mokhoa oa phofo. Matrix ea khalase e siloa pele, ho eketsoa sesebelisoa sa foam, ebe likaroloana tsena tse nyane li fetisoa ka sebōping sa mocheso o phahameng. Ha likaroloana li nolofala kapa li qhibiliha, khase e hlahisoa ka har'a khalase. Ha khase e ntse e atoloha, likaroloana li fetoha li-slope tse se nang letho, ebe li bokelloa ho sebelisoa sehahi sa sefefo kapa sefe sa mokotla.

② Mokhoa oa ho ntša marotholi. Mochesong o itseng, tharollo e nang le ntho e nang le ntlha e tlaase ea ho qhibiliha e omisoa ka spray kapa e futhumatsoa ka sebōping se otlolohileng sa mocheso o phahameng, joalo ka ha ho lokisoa li-microspheres tse nang le alkaline e ngata.

③ Mokhoa oa jeli e omileng. Mokhoa ona o sebelisa li-alkoxide tsa tlhaho e le thepa e tala 'me o kenyelletsa mekhoa e meraro: ho lokisa jeli e omileng, ho sila le ho ntša foam mochesong o phahameng. Mekhoa ena eohle e meraro e na le mefokolo e itseng: mokhoa oa phofo o hlahisa sekhahla se tlase sa ho thehoa ha lifaha, mokhoa oa marotholi o hlahisa li-microspheres tse nang le matla a fokolang, 'me mokhoa oa jeli e omileng o na le litšenyehelo tse phahameng tsa thepa e tala.

Motsoako oa Lisebelisoa tse Kopantsoeng tsa Microsphere ea Khalase e se nang letho le Mokhoa oa ho Kopanya

Ho theha thepa e tiileng e phaphametseng e matla haholo kali-microsphere tsa khalase tse se nang letho, thepa ea matrix e tlameha ho ba le thepa e ntle haholo, joalo ka ho ba le boima bo tlase, matla a phahameng, ho ba le viscosity e tlase, le ho tlotsa hantle ka li-microspheres. Lisebelisoa tsa matrix tse sebelisoang hona joale li kenyelletsa epoxy resin, polyester resin, phenolic resin, le silicone resin. Har'a tsena, epoxy resin ke eona e sebelisoang haholo tlhahisong ea 'nete ka lebaka la matla a eona a phahameng, boima bo tlase, ho monya metsi a tlase, le ho fokotseha ha ho fola. Li-microspheres tsa khalase li ka kopanngoa ka thepa ea matrix ka mekhoa ea ho bopa e kang ho lahla, ho kenngoa ha vacuum, ho bopa phetiso ea metsi, ho bokella likaroloana, le ho bopa khatello. Ho bohlokoa ho totobatsa hore e le ho ntlafatsa boemo ba ho kopana pakeng tsa li-microspheres le matrix, bokaholimo ba li-microspheres le bona bo hloka ho fetoloa, ka hona ho ntlafatsa ts'ebetso e akaretsang ea thepa e kopaneng.