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Mazuva ano, vanhu vanoteerera kune yakaderera kabhoni uye kuchengetedzwa kwezvakatipoteredza, saka pakushongedza, vanhu vazhinji vanosarudza mamwe machira ane hushamwari.Nhasi tinonyanya kutaura pamusoro pezvakatipoteredza zvisingapindi mvura.Kuvhara kwemvura kunonyanya kukamurwa kuva maitiro maviri ekuputira: mvura-inonyunguduka machira (mvura-based coatings) uye solvent-based coatings.Saka ndeupi mutsauko uripo pakati pemapendekete maviri aya asingapindi mvura?

Musiyano pakati pemvura-based coatings uye solvent-based coatings inogona kutaurwa kubva kune anotevera maonero:

A. Misiyano mumagadzirirwo ekuputira

1. The resin yakasiyana.Iyo resin yependi yemvura inonyungudika uye inogona kuparadzirwa (yakanyungudutswa) mumvura;

2. Diluent (solvent) yakasiyana.Mvura-yakavakirwa pendi inogona kucheneswa neDIWater (deionized water) mune chero chikamu, nepo solvent-based peints inogona kungoderedzwa ne organic solvents (parafini isinganhuhwi, mafuta machena, nezvimwewo).

B. Different coating kuvaka zvinodiwa

1. Kunzvimbo yekuvaka, nzvimbo yechando yemvura ndeye 0 ° C, saka mabhanhire emvura haakwanisi kuiswa pasi pe5 ° C, nepo mabhanhire-based-based coatings anogona kuiswa pamusoro -5 ° C, asi kukurumidza kuoma kunononoka. pasi uye nguva iri pakati penjanji icharebeswa;

2. Pakuvaka viscosity, iyo viscosity yekudzikisa mhedzisiro yemvura haina kunaka, uye pendi yakavakirwa pamvura ichave inonetsa kana yakaderedzwa uye yakaderedzwa muviscosity (kuderedza viscosity kuchaderedza zvakanyanya kusimba kwependi inoshanda fluid, inokanganisa simba rekuvhara repende, uye kuwedzera nhamba yezvivakwa zvekuvaka), Solvent-based viscosity inogadzirisa zviri nyore, uye muganho weviscosity uchakanganisawo sarudzo yekuvaka nzira;

3. Pakuomeswa nekuporesa, pendi yemvura yakanyanyisa, humidity yakakwirira uye kutonhora kwakadzika, haigoni kurapwa zvakanaka, uye nguva yekuomeswa yakawedzerwa, asi kana kutonhora kuchipisa, mvura-based. pendi inodawo kupiswa mu gradient, uye inopinda munzvimbo yekushisa kwepamusoro ipapo ipapo.Mushure memvura-yakavakirwa pendi pendi inomesa Kufashukira kwehupfu hwemukati hwemvura kunogona kukonzera pinholes kana kunyange yakakura-yakakura kubhubhura, nekuti mvura chete inoshandiswa seyakasvibira mupendi yakavakirwa pamvura, uye hapana kuvhurika gradient.Zvekunyungudutsa-based coatings, diluent inoumbwa neorganic solvents ine mapoinzi akasiyana ekuvira, uye kune akawanda volatilization gradients.Zviitiko zvakafanana hazvizoitike mushure mekupenya (nguva yekuomeswa mushure mekuvakwa kwapera kusvika panguva yekuomeswa isati yapinda muchoto).

C. Kusiyana kwekushongedza kwekushongedza mushure mekugadzirwa kwefirimu

C-1.Kusiyana kwakajeka kwekutaura

1. Solvent-based coatings inogona kudzora kunaka kwemavara uye mafirita maererano nekukuya, uye hazvisi nyore kukora panguva yekuchengetedza.Nekuwedzera resin kudzora iyo yekuputira PVC (pigment-to-base ratio), additives (senge matting agents) kuti uwane shanduko mukupenya kweiyo firimu rekuvhara, Iyo gloss inogona kuve matte, matte, semi-matte, uye yakakwirira- gloss.Kubwinya kwepende yemotokari kunogona kusvika pa90% kana kupfuura;

2. Kubwinya kwemavara emagetsi emvura haana kuenzana nemafuta emafuta, uye kutaura kwepamusoro-soro kwakashata.Izvi zvinodaro nekuti mvura iri mupendi yakavakirwa pamvura inoshandiswa semushonga.Mamiriro ekuvhuvhuta emvura anoita kuti zviome kupendi dzinobva mumvura

kuratidza kupfuura 85% yakakwirira kupenya..

C-2.Kusiyana kwemavara ekutaura

1. Solvent-based coatings ine ruvara rwakasiyana-siyana rwe pigment uye fillers, ingave inorganic kana organic, saka mavara akasiyana-siyana anogona kugadziriswa, uye kutaura kwemavara kwakanakisa;

2. Kusarudzwa kwemavara uye mafirita emvura-based paints idiki, uye yakawanda organic pigments haigoni kushandiswa.Nekuda kwekusakwana kwemavara toni, zvakaoma kugadzirisa mavara akapfuma seyesolvent-based paints.

D. Kuchengeta uye Kutakura

Pendi dzakagadzirwa nemvura hadzina zvinopisa zvinonyungudutsa, uye hadzina ngozi kuchengeta nekutakura.Kana pane kusvibiswa, vanogona kushambidzwa uye kuderedzwa nemvura yakawanda.Nekudaro, pendi-yakavakirwa mvura ine tembiricha inodiwa yekuchengetedza uye yekufambisa.Mukaka nezvimwe zvirwere.

E. Functional Transcendence

Solvent-based coatings anowanzo organic zvigadzirwa, uye organic zvigadzirwa zvichave nenhevedzano yezvinetso senge cheni scission uye carbonization pasi pekushisa kwakanyanya.Parizvino, iyo yakanyanya tembiricha yekudzivirira yezvigadzirwa zve organic haipfuure 400 ° C.

Yakakosha-yepamusoro-tembiricha inodzivirira machira uchishandisa akakosha inorganic resin mumvura-based coatings inogona kumira tembiricha yezviuru zvemadhigirii.Semuyenzaniso, ZS yakatevedzana yakakwirira-tembiricha-inodzivirira mvura-based coatings haingofungi nezve anti-corrosion uye anti-oxidation zvimiro zveyakajairwa coating, asiwo yenguva refu yakakwirira tembiricha kuramba, inosvika 3000 ℃ Kupisa kwepamusoro, uko kuri. hazvibviri kune solvent-based coatings.

G. Kusiyana kwekuchengetedza nekuchengetedzwa kwezvakatipoteredza

Solvent-based coatings ine njodzi dzinogona kuitika dzemoto uye kuputika panguva yekugadzira, kutakura, kuchengetedza, uye kushandiswa.Kunyanya munzvimbo dzakavharirwa, dzinowanzokonzera kutadza uye kuputika.Panguva imwecheteyo, organic solvents inokonzeresa kumwe kukuvadza kumuviri wemunhu.Nyaya inonyanya kuzivikanwa ndeye toluene inokonzera kenza, uye toluene haichabvumirwi kushandiswa.VOC yezviputi-based coatings yakakwirira, uye zvigadzirwa zvemazuva ose zvakatosvika kupfuura 400. Mabhizinesi ari pasi pekumanikidzwa kukuru pamusoro pekuchengetedzwa kwezvakatipoteredza uye kuchengeteka pakugadzira uye kushandisa tsvina-based coatings.

Maji-based coatings ane hushamwari kwezvakatipoteredza uye akachengeteka mukugadzira, kufambisa, kuchengetedza, uye kushandiswa (kunze kwekunyepedzera-mvura-based coatings kubva kune vamwe vasina kurongeka vagadziri).

Mhedziso:

Mvura-based coatings uye solvent-based coatings ine zvakanakira uye zvisingabatsiri.Nemhaka yokuti tsvakurudzo pamusoro pemvura-based coatings ichiri isina kukura, kushanda kwemvura-based coatings haigoni kuzadzisa zvakakwana zvinodiwa zvekugadzirwa kwevanhu.Iko kushandiswa kwe-solvent-based coatings kuchiri kudikanwa.Mamiriro ezvinhu chaiwo anoongororwa uye anotongwa, uye haagoni kurambwa nekuda kwehumwe husina kunaka hweimwe rudzi rwepende.Zvinotendwa kuti nekudzika kwekutsvakurudza kwesayenzi pamusoro pemvura-based coatings, rimwe zuva, machira matsva ane ushamwari uye akachengeteka achashandiswa zvakanyanya kumativi ose enyika.