Letlalo la PVC (polyvinyl chloride artificial leather) ke lesela le kang letlalo le entsoeng ka resin ea polyvinyl chloride (PVC), le tlatsetso ea li-additives tse sebetsang joalo ka polasetiki le li-stabilizers, ka ho roala, calendering kapa lamination. E latelang ke tlhahlobo e felletseng ea tlhaloso ea eona, chefo, le ts'ebetso ea tlhahiso:
I. Tlhaloso le Sebopeho sa Letlalo la PVC
1. Sebopeho sa Motheo
Base layer: Ka tloaelo ke lesela le lohiloeng kapa le lohiloeng, le fanang ka tšehetso ea mochini.
Lera le ka hare: Lera la PVC le phophomang le nang le li-plasticizers le lisebelisoa tse phophomang, tse fanang ka elasticity le bonolo.
Lera la bokaholimo: Sekoaelo sa PVC sa resin, se ka manehoang ho etsa monko o kang oa letlalo, hape se ka ba le liphekolo tse thibelang ho khoptjoa le tse thibelang litšila.
Lihlahisoa tse ling li kenyelletsa lera la sekhomaretsi la polyurethane (PU) kapa topcoat e sa bonahaleng ea ho roala bakeng sa ts'ebetso e ntlafalitsoeng.
2. Litšobotsi tsa mantlha
Thepa ea 'Mele: Hydrolysis resistance, abrasion resistance (ho feto-fetoha ho fihlela makhetlo a 30,000 ho isa ho 100,000), le ho fokotseha ha lelakabe (B1 grade).
Meeli ea Ts'ebetso: Ho phefumoloha ho fokolang (ka tlase ho letlalo la PU), ho tloaetse ho thatafala ka mocheso o tlase, le tokollo e ka bang teng ea polasetiki ka tšebeliso ea nako e telele.
2. Khang ea chefo le litekanyetso tsa polokeho ea letlalo la PVC
Mehloli e ka bang chefo
1. Li-additives tse kotsi
Li-Plasticizers (li-plasticizers): Li-phthalate tsa setso (tse kang DOP) li ka 'na tsa lutla' me tsa kena-kenana le tsamaiso ea endocrine, haholo-holo ha e le sebakeng sa oli kapa mocheso o phahameng.
Heavy metal stabilizers: Li-stabilizer tse nang le lead le cadmium li ka 'na tsa fallela' meleng oa motho, 'me ho bokella nako e telele ho ka senya liphio le tsamaiso ea methapo.
Vinyl chloride monomer (VCM): VCM e setseng ka tlhahiso ke carcinogen e matla.
2. Likotsi tsa tikoloho le litšila
Li-dioxin le lintho tse ling tse chefo haholo li lokolloa nakong ea ho chesoa; litšepe tse boima li kena mobung le mehloling ea metsi ka mor'a ho qhalloa.
Ho thata ho sebelisa lintho tse sebelisoang hape, 'me boholo ba tsona li fetoha litšila tse sa khaotseng.
Melao ea Tšireletso le Mehato ea Tšireletso
Tekanyetso e tlamang ea China GB 21550-2008 e beha meeli ea lintho tse kotsi:
Vinyl chloride monomer: ≤5 mg/kg
Soluble lead: ≤90 mg/kg | Cadmium e qhibilihang: ≤75 mg/kg
Liphetoho tse ling: ≤20 g/m²
Letlalo la PVC le lumellanang le maemo ana (joalo ka litlolo tse se nang lead le cadmium, kapa ho sebelisa oli ea soya e epoxidized sebakeng sa DOP) le na le kotsi e tlase ea chefo. Leha ho le joalo, ts'ebetso ea eona ea tikoloho e ntse e le tlase ho lisebelisoa tse ling tse kang PU ea letlalo le TPU.
Keletso ea ho Reka: Batla litifikeiti tsa tikoloho (joalo ka FloorScore le GREENGUARD) 'me u qobe ho sebelisa mocheso o phahameng (> 60 ° C) le ho kopana le lijo tse mafura.
III. Ts'ebetso ea Tlhahiso ea Letlalo la PVC
Mokhoa oa mantlha
1. Tokisetso ea Lintho tse tala
Surface Layer Slurry: PVC resin + plasticizer (jwalo ka DOP) + stabilizer (sebopeho se senang loto) + mmala.
Foaming Layer Slurry: Eketsa ntho e fokang (e kang azodicarbonamide) le setlatsi se fetotsoeng (joalo ka attapulgite ho ntlafatsa ho hanyetsa boemo ba leholimo).
2. Molding Process
Mokhoa oa ho abela (Mokhoa o tloaelehileng):
Apara pampiri ea tokollo ka holim'a slurry (o omisa ka 170-190 ° C) → Sebelisa lesela le phophomang la slurry → Laminate ka lesela la motheo (polyurethane bonding) → Ebola pampiri ea tokollo → Sebelisa moemeli oa phekolo ea holim'a metsi ka rolara.
Mokhoa oa ho khalendara:
Motsoako oa resin o fetisoa ka screw (125-175 ° C) → Sheeted holim'a khalendara (mocheso oa rolara 165-180 ° C) → E hatelloa ka mocheso ka lesela la motheo.
Ho Foaming le ka mor'a ho sebetsa:
Sebōpi se phophomang se sebelisa taolo ea mocheso (110-195 ° C) ka lebelo la 15-25 m / min ho etsa sebopeho sa microporous.
Ho khabisa (ho khabisa mahlakoreng a mabeli) le phekolo ea UV e ka holim'a metsi e ntlafatsa maikutlo le ho se mamelle.
Popontšo ea Mokhoa o Sebeletsang Tikoloho
Lisebelisuoa Tse Ling: Ho sebelisoa oli ea soybean e epoxidized le polyester plasticizers ho nka sebaka sa phthalates.
Phetoho e bolokang matla: Theknoloji ea ho lamination e nang le mahlakore a mabeli e fokotsa tšebeliso ea matla ka 30%; lisebelisoa tsa phekolo ea metsi li nka sebaka sa litlolo tse thehiloeng ho solvent.
- Phetoho ea ts'ebetso: Eketsa li-ion tsa silevera (antibacterial), letsopa le fetotsoeng (ntlafatsa matla le ho hanyetsa botsofali).
IV. Kakaretso: Likopo le mekhoa
Libaka tsa kopo: ka hare ho likoloi (litulo), likoahelo tsa thepa ea ka tlung, lieta (lipapali tse ka holimo), mekotla, joalo-joalo.
Mekhoa ea indasteri:
Melao e thibetsoeng ea ts'ireletso ea tikoloho (joalo ka thibelo ea EU PVC), letlalo la TPU/microfiber butle-butle le nka sebaka sa 'maraka oa bohareng ho isa ho o phahameng.
"Technical Specifications for Green Design Product Evaluation" (T/GMPA 14-2023) e kenngoa ts'ebetsong Chaena ho ntšetsa pele ntlafatso ea tšireletso ea tikoloho ea lihlahisoa tse kang letlalo la PVC fatše.
Qeto ea bohlokoa: Letlalo la PVC le ka sebelisoa ka mokhoa o sireletsehileng ho latela litekanyetso tsa polokeho, empa kotsi ea tšilafalo lihokelong tsa tlhahiso / litšila e ntse e le teng. Lihlahisoa tse netefalitsoeng tikolohong tse se nang litšepe tse boima le li-phthalates lia ratoa, 'me ho lebisoa tlhokomelo phetohong ea indasteri ho lisebelisoa tsa PU/bio-based.
Nako ea poso: Jul-29-2025
