Pente ea Thermoplastic Powder - Mofani, Motlatsi, Melemo le Mathata

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China PECOAT® e khethehileng ka tlhahiso le ho romela kantle ho naha ea pente ea phofo ea thermoplastic, sehlahisoa se na le phofo ea polyethylene penta, pvc phofo penta, phofo ea nylon penta, le bethe e nang le metsi lisebelisoa tsa ho qoela.

Histori ea Nts'etsopele ea Thermoplastic Powder Paint

Ho tloha nakong ea koluoa ​​​​ea oli lilemong tsa bo-1970, liphahlo tsa phofo li tsoetse pele ka potlako ka lebaka la paballo ea lisebelisoa tsa tsona, botsoalle ba tikoloho, le ho tšoaneleha bakeng sa tlhahiso ea boiketsetso. Pente ea phofo ea Thermoplastic (eo hape e bitsoang thermoplastic powder coating), e 'ngoe ea mefuta e 'meli ea mantlha ea pente ea phofo, e qalile ho hlaha mafelong a bo-1930.

Lilemong tsa bo-1940, ka nts'etsopele ea indasteri ea petrochemical le liindasteri tse ling, tlhahiso ea li-resin tse kang polyethylene, polyvinyl chloride, le polyamide resin e ile ea eketseha ka potlako, e leng se lebisang ho lipatlisiso tsa pente ea phofo ea thermoplastic. Qalong, batho ba ne ba batla ho sebelisa k'hemik'hale e ntle ea polyethylene ho e sebelisa ho koahela tšepe. Leha ho le joalo, polyethylene ha e qhibilihe ka har'a li-solvents 'me e ke ke ea etsoa ka litlolo tse thehiloeng ho solvent,' me li-adhesives tse loketseng ha lia ka tsa fumanoa ho khomarela letlapa la polyethylene leboteng le ka hare la tšepe. Ka hona, ho fafatsa lelakabe ho ne ho sebelisetsoa ho qhibiliha le ho roala phofo ea polyethylene holim'a tšepe, kahoo ho bula qaleho ea pente ea phofo ea thermoplastic.

Sekoahelo sa bethe se nang le metsi , e leng mokhoa o sebelisoang haholo le o tloaelehileng oa ho penta pente ea phofo ea thermoplastic, o qalile ka mokhoa oa ho fafatsa ka ho toba ka 1950. Mokhoeng ona, phofo ea resin e fafatsoa ka ho lekana holim'a sebaka se futhumetseng sa mosebetsi ho etsa seaparo. E le ho etsa hore mokhoa oa ho fafatsa o iketsetse, mokhoa oa ho fafatsa bethe o nang le metsi o ile oa lekoa ka katleho Jeremane ka 1952. Mokhoa oa ho fafatsa bethe o nang le metsi o sebelisa moea kapa khase e sa sebetseng e bululetsoeng ka poleiting e nang le masoba e ka tlase ho bethe e nang le metsi ho etsa phallo ea moea e hasaneng ka ho lekana, e leng se etsang hore phofo e ka betheng e nang le metsi e phallele boemong bo haufi le mokelikeli, e le hore mosebetsi o ka ajoa ka ho lekana holim'a mosebetsi 'me o fumane sebaka se boreleli le se bataletseng.

Mefuta le Melemo le Melemo ea Pente ea Thermoplastic Powder

Hona jwale, pente ya phofo ya thermoplastic e kenyeletsa mefuta e fapaneng e kang dikoahelo tsa phofo ya polyethylene/ polypropylene , dikoahelo tsa phofo ya polyvinyl chloride, dikoahelo tsa phofo ya nylon, dikoahelo tsa phofo ya polytetrafluoroethylene, le dikoahelo tsa phofo ya polyester ya thermoplastic. Di sebedisitswe haholo tshireletsong ya sephethephethe, ho lwantsha tshenyo ya diphaephe, le dinthong tse fapaneng tsa ka tlung.

nhua polyethylene (PE) le polypropylene (PP) ho roala phofo

Polyethylene le polypropylene e ne e le tse ling tsa thepa ea pele e sebelisitsoeng penteng ea phofo ea thermoplastic 'me e ne e le li-polymer tse peli tsa bohlokoa ka ho fetisisa tsa thermoplastic lekholong la ho qetela la lilemo. Hona joale, polyethylene e nang le bongata bo phahameng le e nang le bongata bo tlase e sebelisitsoe tšimong ea thermoplastic. Polyethylene e nang le bongata bo phahameng hangata e sebelisoa tšimong ea indasteri, ha polyethylene e nang le bongata bo tlase e sebelisoa tšimong ea sechaba.

Joalokaha ketane ea limolek'hule ea polyethylene le polypropylene ke tlamo ea carbon-carbon, ka bobeli li na le litšobotsi tse se nang polar tsa olefin, kahoo polyethylene le polypropylene phofo li na le khanyetso e ntle ea lik'hemik'hale 'me li sebelisoa haholo tšimong ea anti-corrosion. Li sebelisetsoa ho sireletsa, ho boloka le ho tsamaisa lijana, liphaephe le lipeipi tsa oli bakeng sa lik'hemik'hale le lisebelisoa tsa lik'hemik'hale. Joalo ka thepa e sa sebetseng, mofuta ona oa pente ea phofo o na le boits'oaro bo bobe ho substrate mme o hloka kalafo e thata ea bokaholimo, kapa tšebeliso ea primer kapa phetoho ea polyethylene ka lisebelisoa tse ling.

sebelisa hamolemo libaka tseo 

Polyethylene resin ke pente e sebelisoang haholo le e hlahisoang ka ho fetisisa ea thermoplastic powder.

E na le melemo e latelang:

1. Ho hanyetsa metsi hantle, ho hanyetsa acid le alkali, le khanyetso ea lik'hemik'hale;
2. Motlakase o motle oa motlakase le thepa ea ho futhumatsa mocheso;
3. Matla a matle haholo, ho tenyetseha, le ho hanyetsa tšusumetso;
4. Ho hanyetsa mocheso o tlaase, ho ka boloka lihora tse 400 ntle le ho phunyeha ho -40 ℃;
5. Theko e lekanyelitsoeng ea thepa e tala e tlase, ha e chefo ebile e na le tikoloho.

Bothata

Leha ho le joalo, ka lebaka la thepa ea substrate polyethylene, pente ea phofo ea polyethylene e boetse e na le litšitiso tse ke keng tsa qojoa:

1. Ho thatafala, ho hanyetsa, le matla a mochine oa ho roala a batla a fokola;
2. Ho khomarela ha ho roala ho futsanehile 'me substrate e hloka ho tšoaroa ka thata;
3. Khanyetso e mpe ea boemo ba leholimo, e atisang ho ba le khatello ea maikutlo ka mor'a ho pepesehela mahlaseli a ultraviolet;
4. Ho hanyetsa mocheso o phahameng le ho hanyetsa mocheso o mongobo o fokolang.

Polyvinyl chloride (PVC) ho roala phofo

Polyvinyl chloride (PVC) ke polymer ea amorphous e nang le palo e nyane ea likristale tse sa fellang. Boholo PVC Lihlahisoa tsa resin li na le boima ba limolek'hule pakeng tsa 50,000 le 120,000. Le hoja boima bo phahameng ba limolek'hule PVC li-resin li na le thepa e ntle ea 'mele, boima bo tlase ba limolek'hule PVC li-resin tse nang le viscosity e tlase ea ho qhibiliha le mocheso o nolofatsang li loketse haholoanyane joalo ka lisebelisoa tsa pente ea phofo ea thermoplastic.

PVC ka boeona ke thepa e thata 'me e ke ke ea sebelisoa e le thepa ea pente ea phofo feela. Ha ho etsoa liphahlo, ho hlokahala hore ho eketsoe palo e itseng ea plasticizer ho lokisa ho feto-fetoha ha maemo PVC. Ka nako e ts'oanang, ho kenyelletsa li-plasticizers ho boetse ho fokotsa matla a ho tiea ha thepa, modulus, le ho tiea. Ho khetha mofuta o nepahetseng le palo ea polasetiki e ka fihlelang tekanyo e lakatsehang lipakeng tsa ho feto-fetoha ha lintho le boima.

Bakeng sa botlalo PVC foromo ea pente ea phofo, li-stabilizers le tsona ke karolo ea bohlokoa. Ho rarolla botsitso ba mocheso oa PVC, letsoai le tsoakiloeng la calcium le zinki tse nang le botsitso bo botle ba mocheso, sesepa sa barium le cadmium, mercaptan tin, derivatives ea dibutyltin, metsoako ea epoxy, joalo-joalo. Leha li-lead stabilizer li na le botsitso bo botle ba mocheso, li felisitsoe 'marakeng ka lebaka la mabaka a tikoloho.

Hona joale, lihlahisoa tse sebelisoang ka ho fetisisa bakeng sa PVC pente ea phofo ke lisebelisoa tse fapaneng tsa ntlo le liraka tse hlatsoang lijana. PVC lihlahisoa li na le khanyetso e ntle ea ho hlatsoa le ho hanyetsa tšilafalo ea lijo. Li ka boela tsa fokotsa lerata bakeng sa liraka tsa lijana. Li-racks tsa lijana tse koahetsoeng ka PVC lihlahisoa li ke ke tsa etsa lerata ha li beha tableware. PVC litlolo tsa phofo li ka sebelisoa ka ho haha ​​​​bethe ea metsi kapa ho fafatsa ka electrostatic, empa li hloka boholo bo fapaneng ba phofo. Hape ho lokela ho hlokomeloa hore PVC pente ea phofo e ntša monko o monate nakong ea ho qoelisoa 'me e kotsi ho' mele oa motho. Tšebeliso ea bona e se e qalile ho thibeloa linaheng tse ling.

sebelisa hamolemo libaka tseo

Melemo ea pente ea phofo ea polyvinyl chloride ke:

1. Litheko tse tlase tsa thepa e tala;
2. Ho hanyetsa tšilafalo e ntle, ho hanyetsa ho hlatsoa, ​​le ho hanyetsa ho bola;
3. Matla a phahameng a mochini le ts'ebetso e ntle ea ho kenya motlakase.

Bothata

Mefokolo ea pente ea phofo ea polyvinyl chloride ke:

1. Phapang ea mocheso lipakeng tsa mocheso o qhibilihang le mocheso oa ho bola oa PVC resin e nyane. Nakong ea ts'ebetso ea ho roala, mocheso o hloka ho laoloa ka thata ho thibela lesela hore le se ke la bola.
2. Ho roala ha ho hanyetsane le li-hydrocarbon tse nkhang hamonate, li-ester, li-ketone, le li-solvents tse nang le chlorine, joalo-joalo.

Polyamide (nylon) e koahelang phofo

Polyamide resin, eo hangata e tsejoang e le nylon, ke resin ea thermoplastic e sebelisoang haholo. Nylon e na le thepa e felletseng e felletseng, boima bo phahameng, le khanyetso e ikhethang ea ho apara. Li-coefficients tse matla le tse tsitsitseng tsa likhohlopo tsa nylon li nyane, 'me li na le lubricity. Ka hona, li sebelisoa ho li-bearings tsa mechine ea masela, li-gear, li-valve, joalo-joalo. Liaparo tsa phofo tsa nylon li na le lubricity e ntle, lerata le tlaase, ho feto-fetoha ha maemo, ho khomarela ka mokhoa o babatsehang, ho hanyetsa lik'hemik'hale, le ho hanyetsa solvent. Li ka sebelisoa e le seaparo se setle sa ho roala le ho tlotsa ho nka sebaka sa koporo, aluminium, cadmium, tšepe, joalo-joalo. Boima ba filimi ea ho roala nylon ke 1/7 feela ea koporo, empa ho hanyetsa ha eona ho ka makhetlo a robeli ho feta koporo.

Liaparo tsa phofo tsa nylon ha li na chefo, ha li na monko ebile ha li na tatso. Ha li kopane le taba ea hore ha li kotsing ea ho hlaseloa ke fungal kapa ho khothaletsa kholo ea baktheria, li sebelisoa ka katleho indastering ea ho lokisa lijo ho koahela likarolo tsa mochini le liphaephe kapa ho koahela bokaholimo bo kopanang le lijo ka kotloloho. Ka lebaka la matla a eona a ho thibela metsi le metsi a letsoai, e boetse e sebelisoa hangata bakeng sa ho roala likarolo tsa mochini o hlatsoang, joalo-joalo.

Sebaka sa bohlokoa sa kopo ea liphahlo tsa phofo ea nylon ke ho roala mefuta e sa tšoaneng ea ho tšoara, eseng feela hobane e na le likarolo tsa bohlokoa tse kang ho hanyetsa ho apara le ho hanyetsa, empa hape le hobane mocheso oa bona o tlaase oa mocheso o etsa hore matsoho a ikutloe a le bonolo. Sena se etsa hore lisebelisoa tsena li tšoanelehe haholo bakeng sa ho roala lithulusi tsa ho roala, lithupa tsa mamati le mabili a tsamaisang.

Ha ho bapisoa le liphahlo tse ling, lifilimi tsa ho roala nylon li na le lik'hemik'hale tse fokolang tsa lik'hemik'hale 'me ha lia lokela ho sebelisoa libakeng tsa lik'hemik'hale tse kang acid le alkalis. Ka hona, li-resin tse ling tsa epoxy li atisa ho eketsoa e le li-modifiers, tse ke keng tsa ntlafatsa feela ho hanyetsa ha kutu ea liaparo tsa nylon empa hape le ho ntlafatsa matla a maqhama pakeng tsa filimi ea ho roala le karoloana ea tšepe. Phofo ea nylon e na le sekhahla se phahameng sa ho monya metsi 'me e ka hlaseloa habonolo ke mongobo nakong ea kaho le polokelo. Ka hona, e hloka ho bolokoa tlas'a maemo a koetsoeng 'me ha ea lokela ho sebelisoa nako e telele tlas'a maemo a mongobo le a chesang. Ntho e 'ngoe eo u lokelang ho e ela hloko ke hore nako ea polasetiki ea phofo ea nylon e batla e le khutšoanyane, esita le filimi ea ho roala e sa hlokeng polasetiki e ka finyella phello e lakatsehang, e leng tšobotsi e ikhethang ea phofo ea nylon.

Pente ea phofo ea polyvinylidene fluoride (PVDF).

Sekhabiso se emelang boemo ba leholimo ka ho fetisisa penteng ea phofo ea thermoplastic ke polyvinylidene fluoride (PVDF) phofo e koahetsoeng. E le ethylene polymer ea boemo ba leholimo e emelang boemo ba leholimo, PVDF e na le khanyetso e ntle ea mochini le ts'usumetso, khanyetso e ntle ka ho fetesisa, ho tenyetseha le ho thatafala ha maemo a leholimo, 'me e khona ho hanela lik'hemik'hale tse senyang tse kang acid, alkalis le li-oxidants tse matla. Ho feta moo, ha e qhibilihe ka har'a metsoako ea lik'hemik'hale e atisang ho sebelisoa indastering ea ho roala, e leng ka lebaka la li-bond tsa FC tse nang le PVDF. Ka nako e ts'oanang, PVDF e boetse e fihlela litlhoko tsa FDA mme e ka sebelisoa ho lokisa lijo 'me e ka kopana le lijo.

Ka lebaka la viscosity ea eona e phahameng ea ho qhibiliha, PVDF e atisa ho ba le masoba le ho khomarela tšepe e fokolang ka ho roala filimi e tšesaane, 'me theko ea thepa e phahame haholo. Ka hona, maemong a mangata, ha e sebelisoe e le eona feela thepa ea motheo bakeng sa ho roala phofo. Ka kakaretso, hoo e ka bang 30% ea resin ea acrylic e eketsoa ho ntlafatsa thepa ena. Haeba litaba tsa acrylic resin li phahame haholo, li tla ama boemo ba leholimo bo hanyetsanang le filimi ea ho roala.

Sekhahla sa filimi ea ho roala ea PVDF se batla se le tlase, hangata se pota-potile 30±5%, e fokotsang ts'ebetso ea eona ho khabisa bokaholimo. Hajoale, e sebelisoa haholo joalo ka moaho oa meaho e meholo, e sebelisoang ho liphanele tsa marulelo, mabota le liforeimi tsa lifensetere tsa aluminium tse extruded, tse nang le khanyetso e ntle haholo ea boemo ba leholimo.

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