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WPC ke lisebelisoa tse entsoeng ka ho sebelisa li-plastiki tse chesang tse qhibilihisang, ho kenyelletsa polyethylene, polypropylene, polyvinyl chloride le li-copolymers e le likhomaretsi, li sebelisa phofo ea lehong joalo ka lehong, joang ba semela sa temo, khetla ea semela sa temo e le lisebelisoa tsa ho tlatsa, ho bopa kapa mokhoa oa ho hatella, mokhoa oa ho bopa ka ente.Lisebelisoa tse tala tsa polasetiki tse chesang li ka sebelisoa indastering kapa lisebelisoa tsa bophelo, phofo ea lehong e ka boela ea sebelisoa litšila tsa ho lokisa lehong, lehong le lenyenyane le lehong le leng la boleng bo tlaase.Ho latela pono ea tlhahiso ea lihlahisoa tse tala, lihlahisoa tsa polasetiki tsa lehong li fokotsa lebelo le ho felisa tšilafalo ea litšila tsa polasetiki, hape li felisa tšilafalo e bakoang ke ho chesoa ha limela tsa temo tikolohong.Khetho ea foromo ea thepa molemong oa ho kopanya e kenyelletsa lintlha tse latelang:

1. Li-polymers

Li-plastiki tse sebelisoang ha ho etsoa metsoako ea lehong-polasetiki e ka ba li-thermoset le thermoplastics, li-thermoset tse kang li-epoxy resin, thermoplastics tse kang polyethylene (PE), polypropylene (PP) le polyoxyethylene (PVC).Ka lebaka la botsitso bo fokolang ba mocheso oa fiber ea lehong, ke li-thermoplastics feela tse nang le mocheso o ka tlase ho 200 ° C tse sebelisoang haholo, haholo-holo polyethylene.Khetho ea li-polymers tsa polasetiki e ipapisitse le litšoaneleho tsa tlhaho tsa polymer, litlhoko tsa sehlahisoa, ho fumaneha ha thepa e tala, litšenyehelo le tekanyo ea ho tloaelana le eona.Tse kang: polypropylene e sebelisoa haholo-holo lihlahisoa tsa likoloi le lihlahisoa tsa bophelo ba letsatsi le leng le le leng, PVC e sebelisoa haholo-holo ho haha ​​​​menyako le Windows, liphanele tsa paving joalo-joalo.Ho phaella moo, tekanyo ea ho phalla ha metsi (MFI) ea polasetiki e boetse e na le tšusumetso e itseng ho thepa ea thepa e kopantsoeng, tlas'a maemo a tšoanang a ho sebetsa, MFI ea resin e phahame, ho kenella ka kakaretso ha phofo ea lehong ho molemo, ho ajoa ha phofo ea lehong ho tšoana haholo, 'me ho kenngoa le ho ajoa ha phofo ea lehong ho ama thepa ea mochine oa thepa e kopantsoeng, haholo-holo matla a ts'usumetso.

2. Lisebelisoa

Kaha phofo ea lehong e na le metsi a matla le polarity e matla, 'me boholo ba thermoplastics ha bo na polar le hydrophobic, ho lumellana pakeng tsa tse peli ho fokola,' me matla a ho kopanya li-interface a nyenyane haholo, 'me li-additives tse loketseng li atisa ho sebelisoa ho fetola bokaholimo ba polymer. le phofo ea patsi ho ntlafatsa kamano pakeng tsa phofo ea lehong le resin.Ho feta moo, phello ea ho hasana ea phofo e ngata ea lehong e tlatsang ka har'a thermoplastic e qhibilihisitsoeng e futsanehile, hangata ka mokhoa oa ho kopanya, ho etsa hore phallo ea ho qhibiliha e fokotsehe, ho thata ho sebetsana le extrusion, 'me lisebelisoa tsa phekolo ea holim'a metsi li hloka ho eketsoa ho ntlafatsa phallo ho thusa. sebopeho sa extrusion.Ka nako e ts'oanang, matrix ea polasetiki e boetse e hloka ho eketsa lisebelisoa tse fapaneng ho ntlafatsa ts'ebetso ea eona ea ts'ebetso le ts'ebeliso ea sehlahisoa se felileng, ho ntlafatsa matla a tlamang pakeng tsa phofo ea lehong le polymer le thepa ea mochini ea thepa e kopaneng.Li-additives tse sebelisoang hangata li kenyelletsa lihlopha tse latelang:

a) Coupling moemeli ka hlahisa matla segokanyimmediamentsi sa sebolokigolo maqhama pakeng tsa polasetiki le lehong phofo holim'a metsi;Ka nako e ts'oanang, e ka fokotsa ho kenngoa ha metsi ka phofo ea lehong le ho ntlafatsa ho lumellana le ho hasana ha phofo ea lehong le polasetiki, kahoo thepa ea mechine ea thepa e kopantsoeng e ntlafatsoa haholo.Lisebelisoa tse atisang ho sebelisoa ke: isocyanate, isopropylbenzene peroxide, aluminate, phthalates, silane coupling agent, maleic anhydride modified polypropylene (MAN-g-PP), ethylene-acrylate (EAA).Ka kakaretso, palo e ekelitsoeng ea sesebelisoa sa ho kopanya ke 1wt% ~ 8wt% ea palo e ekelitsoeng ea phofo ea patsi, joalo ka silane coupling agent e ka ntlafatsa ho khomarela polasetiki le phofo ea lehong, ea ntlafatsa ho hasana ha phofo ea lehong, ea fokotsa ho monya ha metsi le alkaline. phekolo ea phofo ea lehong e ka ntlafatsa feela ho qhalakanngoa ha phofo ea lehong, e ke ke ea ntlafatsa ho kenngoa ha metsi ka phofo ea lehong le ho khomarela ka polasetiki.Re lokela ho hlokomela hore maleate coupling agent le lubricant ea stearate li tla ba le maikutlo a nyonyehang, e leng se tla lebisa ho fokotseha ha boleng ba sehlahisoa le lihlahisoa ha li sebelisoa hammoho.

b) Plasticizer Bakeng sa li-resin tse ling tse nang le mocheso o phahameng oa phetoho ea likhalase le ho qhibiliha ha viscosity ea ho phalla, joalo ka boima ba PVC, ho thata ho sebetsa ha e kopantsoe le phofo ea lehong, 'me hangata hoa hlokahala ho eketsa plasticizer ho ntlafatsa ts'ebetso ea eona ea ts'ebetso.Sebopeho sa limolek'hule tsa Plasticizer se na le liphatsa tsa lefutso tsa polar le tse seng tsa polar, tlas'a ketso ea mocheso o phahameng oa mocheso, o ka kena ka har'a ketane ea limolek'hule tsa polymer, ka liphatsa tsa lefutso tsa polar li hohelana ho theha mokhoa o ts'oanang le o tsitsitseng, le ho kenngoa ha molek'hule oa nako e telele. e fokolisa ho hoheloa ha limolek'hule tsa polymer, e le hore ts'ebetso e be bonolo.Dibutyl phthalate (DOS) le li-plasticizers tse ling hangata li kenyelletsoa ho metsoako ea lehong-plastiki.Ka mohlala, ka PVC lehong phofo composite lintho tse bonahalang, tlatsetso ea plasticizer DOP ka fokotsa ho sebetsa mocheso, fokotsa ho bola le mosi oa lehong phofo, le ho ntlafatsa tensile matla a lintho tse bonahalang tse composite ha elongation nakong ea khefu eketseha ka keketseho ea litaba tsa DOP.

c) Lisebelisoa Hangata metsoako ea lehong-polastiki e hloka ho eketsa mafura ho ntlafatsa mokelikeli oa ho qhibiliha le boleng ba bokaholimo ba lihlahisoa tse tlositsoeng, 'me lisebelisoa tse sebelisoang li arotsoe ka litlolo tse ka hare le tse tsoang kantle.Khetho ea lubricant e ka hare e amana le resin ea matrix e sebelisitsoeng, e tlamehang ho lumellana hantle le resin ka mocheso o phahameng, 'me e hlahise phello e itseng ea polasetiki, e fokotsa matla a ho kopanya pakeng tsa limolek'hule ka har'a resin, e fokolise likhohlano pakeng tsa limolek'hule. e le ho fokotsa viscosity e qhibilihisitsoeng ea resin le ho ntlafatsa ho qhibiliha ha metsi.Ha e le hantle, mafura a ka ntle a bapala karolo ea ho lubrication pakeng tsa resin le phofo ea patsi ha ho etsoa popo ea polasetiki, 'me mosebetsi oa eona o ka sehloohong ke ho khothaletsa ho thella ha likaroloana tsa resin.Hangata setlolo hangata se na le thepa ea ho lubrication ka hare le kantle.Lisebelisoa li na le tšusumetso e itseng bophelong ba tšebeletso ea hlobo, barrel le screw, matla a tlhahiso ea extruder, tšebeliso ea matla ts'ebetsong ea tlhahiso, qetello ea sehlahisoa le ts'ebetso e tlase ea mocheso oa profil.Litlolo tse sebelisoang ka tloaelo ke: zinc stearate, ethylene bisfatty acid amide, polyester wax, stearic acid, lead stearate, polyethylene wax, boka ba parafine, boka ba polyethylene e oxidized joalo-joalo.

d) Colorant Tšebelisong ea lisebelisoa tse entsoeng ka lehong-polasetiki, ntho e solvable ka phofo ea lehong e bonolo ho fallela holim'a sehlahisoa, e le hore sehlahisoa se senyehe, 'me qetellong se be bohlooho, lihlahisoa tse fapaneng sebakeng se itseng sa tšebeliso, empa e boetse e hlahisa matheba a matsho kapa matheba a mafome.Ka hona, li-colorants li boetse li sebelisoa haholo ha ho etsoa lihlahisoa tse entsoeng ka lehong-polasetiki.E ka etsa hore sehlahisoa se be le 'mala o ts'oanang le o tsitsitseng,' me decolorization e lieha.

e) Lisebelisoa tse entsoeng ka lehong-polasetiki li na le melemo e mengata, empa ka lebaka la motsoako oa resin le phofo ea lehong, ductility ea eona le ho hanyetsa ha eona ho fokotsehile, thepa e brittle, 'me boima ba eona bo batla bo le boholo ba makhetlo a 2 ho feta lehong la setso. lihlahisoa, ho fokotsa tšebeliso ea eona e pharaletseng.Ka lebaka la sebopeho se setle sa bubble, motsoako o entsoeng ka lehong-polasetiki o foamed o ka fetisa ntlha ea ho phatloha 'me oa thibela ka katleho ho atoloha ha lepetso, kahoo o ntlafatsa haholo ts'ebetso ea ho hanyetsa le ductility ea thepa, le ho fokotsa haholo sekhahla sa sehlahisoa.Ho na le mefuta e mengata ea lisebelisoa tse fehlang, 'me ho na le tse peli tse sebelisoang ka tloaelo: li-endothermic blowing agents (tse kang sodium bicarbonate NaHCO3) le li-exothermic blowing agents (azodibonamide AC), tseo boitšoaro ba tsona ba ho bola ha mocheso bo fapaneng, 'me li na le litlamorao tse fapaneng ho viscoelasticity le. mofuta oa foaming oa polymer melt, kahoo ho lokela ho khethoa moemeli ea loketseng oa ho foka ho latela litlhoko tsa tšebeliso ea lihlahisoa.

f) Tšebeliso ea li-stabilizers tsa UV le tse ling tse thibelang mahlaseli a kotsi le tsona li tsoetse pele ka potlako ka ntlafatso ea litlhoko tsa batho bakeng sa boleng le ho tšoarella ha metsoako ea lehong-plastiki.E ka etsa hore polymer ka thepa e kopantsoeng e se ke ea nyenyefatsa kapa thepa ea mochini e fokotseha.Hangata tse sebelisoang ke li-blockers tsa amine light stabilizers le li-absorber tsa ultraviolet.Ho phaella moo, e le ho etsa hore thepa e kopantsoeng e ka boloka ponahalo e ntle le ts'ebetso e phethahetseng, hangata ho hlokahala ho eketsa mahlahana a antibacterial, 'me khetho ea li-antibacterial agents e lokela ho nahana ka mofuta oa phofo ea lehong, palo ea ho phaella, libaktheria tse ka hare. tikoloho ea tšebeliso ea lintho tse entsoeng ka motsoako, metsi a sehlahisoa le lintlha tse ling.Ka mohlala, borate ea zinc e sireletsa empa eseng algal.

Ho hlahisa le ho sebelisa lisebelisoa tse entsoeng ka lehong-polasetiki ho ke ke ha ntša li-volatile tse kotsi bophelong ba batho ho tikoloho e potolohileng, 'me lihlahisoa tsa lehong-polasetiki ka botsona li ka sebelisoa hape le ho sebelisoa hape, kahoo lihlahisoa tsa lehong-polasetiki ke mofuta o mocha oa tšireletso ea tikoloho e tala. lihlahisoa, tse ka itlhoekisang tikolohong le ho ba le litebello tse pharaletseng tsa nts'etsopele