litaba

Matsatsing ana, batho ba ela hloko tšireletso e tlase ea khabone le tikoloho, kahoo ha ba khabisa, batho ba bangata ba tla khetha liaparo tse ling tse sireletsang tikoloho. Kajeno re bua haholo ka liaparo tse sa keneleng metsi tse sireletsang tikoloho. Li-coat tse sa keneleng metsi li arotsoe haholo ka mefuta e 'meli ea liaparo: liaparo tse qhibilihang metsing (li-coat tse thehiloeng metsing) le liaparo tse thehiloeng ho solvent. Joale phapang ke efe pakeng tsa liaparo tsena tse peli tse sa keneleng metsi?

Phapang pakeng tsa liphahlo tse thehiloeng metsing le liphahlo tse thehiloeng ho solvent e ka boleloa ho latela maikutlo a latelang:

A. Phapang litsamaisong tsa ho koahela

1. Resin e fapane. Resin ea pente e thehiloeng metsing e qhibiliha metsing 'me e ka qhalanngoa (ea qhibilihisoa) ka metsing;

2. Motsoako (solvent) o fapane. Pente e thehiloeng metsing e ka hlapolloa ka DIWater (metsi a hloekisitsoeng) ka tekanyo efe kapa efe, ha pente e thehiloeng ho solvent e ka hlapolloa feela ka li-solvent tsa tlhaho (parafini e se nang monko, oli e tšoeu e bobebe, jj.).

B. Litlhoko tse fapaneng tsa kaho ea ho koahela

1. Bakeng sa tikoloho ea kaho, ntlha ea ho hoama ea metsi ke 0 °C, kahoo liphahlo tse thehiloeng metsing li ke ke tsa sebelisoa ka tlase ho 5 °C, ha liphahlo tse thehiloeng ho solvent li ka sebelisoa ka holimo ho -5 °C, empa lebelo la ho omisa le tla fokotseha 'me sebaka se pakeng tsa litsela se tla atolosoa;

2. Bakeng sa viscosity ea kaho, phello ea phokotso ea viscosity ea metsi e mpe, 'me pente e thehiloeng metsing e tla ba le mathata ha e hlapolloa le ho fokotseha viscosity (phokotso ea viscosity e tla fokotsa haholo dikahare tse tiileng tsa mokelikeli o sebetsang oa pente, e ame matla a koahelang pente, 'me e eketse palo ea liphase tsa kaho), tokiso ea viscosity e thehiloeng ho solvent e bonolo haholoanyane, 'me moeli oa viscosity o tla boela o ame khetho ea mokhoa oa kaho;

3. Bakeng sa ho omisa le ho lokisa pente, pente e thehiloeng metsing e bonolo haholoanyane, mongobo o phahame mme mocheso o tlase, e ke ke ea fola hantle, mme nako ea ho omisa e atolosoa, empa haeba mocheso o futhumetse, pente e thehiloeng metsing le eona e hloka ho futhumatsoa ka gradient, 'me e tla kena tikolohong ea mocheso o phahameng hang-hang. Kamora hore bokaholimo ba pente e thehiloeng metsing bo ome Ho tlala ha mouoane oa metsi ka hare ho ka baka masoba a pin kapa esita le ho phatloha ho hoholo, hobane ke metsi feela a sebelisoang e le motsoako penteng e thehiloeng metsing, 'me ha ho na gradient ea ho fetoha ha mocheso. Bakeng sa liphahlo tse thehiloeng ho solvent, motsoako o entsoe ka li-solvent tsa tlhaho tse nang le lintlha tse fapaneng tsa ho belisa, 'me ho na le gradient tse ngata tsa ho fetoha ha mocheso. Liketsahalo tse tšoanang li ke ke tsa etsahala kamora ho benya (nako ea ho omisa kamora hore kaho e phethoe ho fihlela nakong ea ho omisa pele ho kena ka ontong).

C. Phapang mokhabisong oa ho roala ka mor'a ho thehoa ha filimi

C-1. Ponahalo e fapaneng ea khanya

1. Liaparo tse thehiloeng ho solvent li ka laola ho se tenyetseha ha li-pigment le li-filler ho latela ho sila, 'me ha li bonolo ho li teteana nakong ea polokelo. Ka ho eketsa li-resin ho laola PVC ea ho roala (karolelano ea pigment-to-base), li-additives (tse kang li-matting agents) ho fihlela liphetoho ho phatsimang ea filimi ea ho roala, Khanya e ka ba matte, matte, semi-matte, le high-best. Khanya ea pente ea koloi e ka ba holimo ho 90% kapa ho feta;

2. Ponahalo e benyang ea lipente tse thehiloeng metsing ha e pharalle joaloka ea lipente tse thehiloeng oling, 'me ponahalo e benyang haholo ha e ntle. Lebaka ke hobane metsi a penteng e thehiloeng metsing a sebelisoa e le motsoako. Litšobotsi tsa ho feto-fetoha ha metsi li etsa hore ho be thata hore lipente tse thehiloeng metsing li be thata.

hlahisa khanya e phahameng e fetang 85%.

C-2. Ponahalo e fapaneng ea mebala

1. Liaparo tse thehiloeng ho solvent li na le mefuta e mengata ea li-pigment le li-filler, ebang ke tse sa tloaelehang kapa tse entsoeng ka tlhaho, kahoo mebala e fapaneng e ka fetoloa, 'me ponahalo ea' mala e ntle haholo;

2. Mefuta e fapaneng ea li-pigment le li-filler bakeng sa lipente tse thehiloeng metsing e nyane, 'me boholo ba li-pigment tsa tlhaho li ke ke tsa sebelisoa. Ka lebaka la 'mala o sa fellang, ho thata ho fetola mebala e metle joalo ka lipente tse thehiloeng ho solvent.

D. Polokelo le Lipalangoang

Pente e thehiloeng metsing ha e na metsoako ea tlhaho e tukang, 'me e bolokehile haholo ho e boloka le ho e tsamaisa. Haeba ho na le tšilafalo, e ka hlatsuoa le ho tsoakoa ka metsi a mangata. Leha ho le joalo, pente e thehiloeng metsing e na le litlhoko tsa mocheso bakeng sa polokelo le lipalangoang. Lebese le mathata a mang.

E. Phetoho ea Mesebetsi

Liaparo tse thehiloeng ho solvent boholo ba tsona ke lihlahisoa tsa tlhaho, 'me lihlahisoa tsa tlhaho li tla ba le letoto la mathata a kang ho khaoloa ha ketane le ho kenngoa ha carbonization tlas'a maemo a mocheso o phahameng. Hona joale, khanyetso e phahameng ka ho fetisisa ea mocheso oa lihlahisoa tsa tlhaho ha e fete 400 °C.

Liaparo tse khethehileng tse hanelang mocheso o phahameng tse sebelisang li-resin tse khethehileng tse sa pheleng ka har'a liaparo tse thehiloeng metsing li ka mamella mocheso oa likhato tse likete. Mohlala, liaparo tse thehiloeng metsing tse hanelang mocheso o phahameng tsa letoto la ZS ha li nahane feela ka thepa ea ho thibela ho bola le ho thibela oxidation ea liaparo tse tloaelehileng, empa hape le ho hanyetsa mocheso o phahameng oa nako e telele, ho fihlela ho 3000 ℃ Mocheso o phahameng, e leng ntho e ke keng ea khoneha bakeng sa liaparo tse thehiloeng ho solvent.

G. Phapang mabapi le polokeho le ts'ireletso ea tikoloho

Liaparo tse thehiloeng ho solvent li na le likotsi tse ka bang teng tsa polokeho ea mollo le ho phatloha nakong ea tlhahiso, lipalangoang, polokelo le ts'ebeliso. Haholo-holo libakeng tse koetsoeng, ho ka etsahala hore li bake ho bipetsana le ho phatloha. Ka nako e ts'oanang, li-solvent tsa organic le tsona li tla baka tšenyo e itseng 'meleng oa motho. Nyeoe e tsebahalang haholo ke nyeoe ea toluene e bakang mofetše, 'me toluene ha e sa lumelloa ho sebelisoa. VOC ea liaparo tse thehiloeng ho solvent e phahame, 'me lihlahisoa tse tloaelehileng li phahame ho feta 400. Likhoebo li tlas'a khatello e kholo ea tšireletso ea tikoloho le polokeho ha li hlahisa le ho sebelisa liaparo tse thehiloeng ho solvent.

Liaparo tse thehiloeng metsing li mosa tikolohong 'me li bolokehile tlhahisong, lipalangoangng, polokelong le tšebelisong (ntle le liaparo tse thehiloeng metsing tse tsoang ho bahlahisi ba bang ba sa reroang).

Qetello:

Liaparo tse thehiloeng metsing le liaparo tse thehiloeng ho solvent li na le melemo le mathata a tsona. Hobane lipatlisiso mabapi le liaparo tse thehiloeng metsing li ntse li sa butsoa, ​​​​ts'ebetso ea liaparo tse thehiloeng metsing e ke ke ea fihlela litlhoko tsa tlhahiso ea sechaba ka botlalo. Tšebeliso ea liaparo tse thehiloeng ho solvent e ntse e hlokahala. Boemo ba 'nete boa hlahlojoa le ho ahloloa,' me bo ke ke ba latoloa ka lebaka la bofokoli bo itseng ba mofuta o itseng oa pente. Ho lumeloa hore ka ho teba ha lipatlisiso tsa saense mabapi le liaparo tse thehiloeng metsing, ka letsatsi le leng, liaparo tse ncha tse sireletsang tikoloho le tse sireletsehileng li tla sebelisoa haholo sekhutlong se seng le se seng sa lefats'e.