Moetso oa retardant oa SK Polyester ES500 (tekanyo ea UL94 V0).
I. Mokhoa oa ho Etsa Moralo
- Substrate Compatibility
- SK Polyester ES500: Polyester ea thermoplastic e nang le mocheso o tloaelehileng oa ho sebetsa oa 220-260°C. Se thibelang malakabe se tlameha ho mamella mocheso ona.
- Litlhoko tsa Bohlokoa: Ho leka-lekanya ho lieha ha lelakabe (V0), thepa ea mochine (matla a ho tsitsa / a ts'ebetso), le ho sebetsa ha metsi.
- Synergistic Flame Retardant System
- Ultrafine Aluminium Hydroxide (ATH): Ntho e ka sehloohong e thibelang lelakabe, endothermic dehydration. Ho roala ho tlameha ho leka-lekanya ho lieha ha lelakabe le thepa ea mochini.
- Aluminium Hypophosphite: Char-forming synergist, e sebetsa le ATH ho theha phello ea phosphorus-aluminium synergistic, ho ntlafatsa boleng ba char.
- Zinc Borate: Sehlahisoa sa char, se hatella mosi, 'me se theha thibelo e teteaneng ka ATH.
- MCA (Melamine Cyanurate): E thibela lelakabe la gas-phase, e hlapolla oksijene le ho thibela ho rotha ho qhibiliha.
II. Tlhahiso e khothalelitsoeng (Karolo ea Boima)
| Karolo | Karolelano | Lintlha tsa Ts'ebetso |
|---|---|---|
| SK Polyester ES500 | 45–50% | Resin ea motheo; khetha boemo bo phahameng ba metsi ho lefella viscosity ea ho tlatsa. |
| ATH e phahameng ka ho fetisisa | 25–30% | Bokaholimo bo fetotsoeng ka silane coupling agent (KH-550), D50 <3 μm. |
| Hypophosphite ea aluminium | 10–12% | E thibela mocheso (> 300 ° C), e kopantsoe le ATH 'me e eketsoa ka mekhahlelo. |
| Borate ea Zinc | 6–8% | E kenyellelitsoe le MCA ho qoba tšenyo e kholo ea sebopeho. |
| MCA | 4–5% | Mocheso oa tšebetso <250°C, ho hasana ka lebelo le tlase. |
| Ea qhalaneng | 2–3% | Polyester-compatible dispersant (mohlala, BYK-161) + polyethylene wax composite. |
| Coupling Agent (KH-550) | 1% | Pele ho phekola ATH le aluminium hypophosphite; ho qoelisoa ka ethanol ho lateloe ke ho omisa. |
| Moemeli oa Anti-Dripping | 0.5–1% | PTFE micropowder ho hatella ho phatloha ho hoholo. |
| Thuso ea Ts'ebetso | 0.5% | Zinc stearate (lubrication le anti-sticking). |
III. Litaolo tsa Ts'ebetso ea Bohlokoa
- Phatlalatso Optimization
- Kalafo ea pele: Kenya ATH le aluminium hypophosphite ka 1% KH-550 tharollo ea ethanol ka lihora tse 2, ebe o omella ka 80°C.
- Ho Kopanya Tatelano:
- Base resin + dispersant + coupling agent → Ho kopanya ka lebelo le tlase (500 rpm, 5 min).
- Kenya ATH/aluminium hypophosphite e fetotsoeng → ho kuta ka lebelo le phahameng (2500 rpm, 20 min).
- Kenya zinki borate/MCA/PTFE → Ho kopanya ka lebelo le tlase (800 rpm, 10 min).
- Thepa: Twin-screw extruder (libaka tsa mocheso: sebaka sa phepelo 200°C, sebaka se qhibilihang 230°C, shoa 220°C).
- Ho sebetsa Taolo ea Mocheso
- Etsa bonnete ba hore mocheso o qhibiliha <250 ° C ho thibela ho bola ha MCA (MCA e bola ka 250-300 ° C).
- Li-pellets tse pholileng ka metsi ka mor'a ho fetisoa ho thibela ho falla ha mollo.
IV. Lelakabe Retardant Synergistic Mechanism
- ATH + Aluminium Hypophosphite
- ATH e monya mocheso ebe e ntša mouoane oa metsi, e hlapolla likhase tse tukang.
- Aluminium hypophosphite e thusa ho theha char e teteaneng (AlPO₄), e thibela phetisetso ea mocheso.
- Zinc Borate + MCA
- Zinc borate e etsa mokoallo oa khalase holim'a mapetsong a char.
- MCA e bola ho lokolla NH₃, e hlapolla oksijene le ho thibela karabelo ea mahala ea radical.
- PTFE Anti-Dripping
- PTFE micropowder e theha marang-rang a fiber, e fokotsang kotsi ea ho chesa.
V. Tokiso ea Ts'ebetso & Tharollo ea Mathata
| Taba e Tloaelehileng | Tharollo |
|---|---|
| Ho lieha ha lelakabe ka tlase ho V0 (V1/V2) | Eketsa aluminium hypophosphite ho 12% + MCA ho 5%, kapa eketsa 2% e kentsoeng phosphorus e khubelu (synergistic le aluminium hypophosphite). |
| Thepa e fokotsehileng ea mechine | Fokotsa ATH ho 25%, eketsa 5% fiber glass (matlafatso) kapa 3% maleic anhydride-grafted POE (toughening). |
| Ho se sebetse hantle ha metsi | Eketsa dispersant ho 3%, kapa eketsa 0.5% low-MW polyethylene boka (lubrication). |
| Ho thunya bokahodimo | Ntlafatsa litekanyetso tsa li-agent kapa u fetohele ho titanate coupling agent (NDZ-201) bakeng sa tlamahano e ntle ea sefahleho. |
VI. Metrics ea netefatso
- Tlhahlobo ea UL94 V0
- 1.6 limilimithara le 3.2 limilimithara, nako eohle ea ho chesa <50 sec ka mor'a ho khantša habeli, ha ho na mokelikeli o rothang.
- LOI: Sepheo ≥30% (ea sebele ≥28%).
- Thepa ea Mechini:
- Matla a ho tiea > 40 MPa, matla a tšusumetso > 5 kJ/m² (tekanyetso ea ASTM).
- Thermal Stability (TGA):
- Masalla a chala ho 800°C> 20%, mocheso oa pele oa ho bola> 300°C.
VII. Mohlala oa Tlhahiso ea Litšupiso
| Karolo | Litaba (%) |
|---|---|
| SK Polyester ES500 | 48% |
| Ultrafine ATH (e fetotsoe) | 28% |
| Hypophosphite ea aluminium | 11% |
| Borate ea Zinc | 7% |
| MCA | 4% |
| BYK-161 Dispersant | 2.5% |
| KH-550 Coupling Agent | 1% |
| PTFE Anti-Dripping Agent | 0.8% |
| Zinc Stearate | 0.5% |
Tlhahiso ena le moralo oa ts'ebetso o fihlella ka katleho UL94 V0 flame retardancy bakeng sa SK Polyester ES500 ha o ntse o leka-lekanya ts'ebetso le thepa ea mochini. Liteko tse nyane li khothaletsoa ho netefatsa phallo pele ho karohano e ntle (mohlala, ho leka-lekanya aluminium hypophosphite le MCA). Bakeng sa ntlafatso e tsoelang pele ea ho thibela lelakabe, nahana ka ho kenyelletsa 2% ea boron nitride nanosheets (BNNS) e le setlala se sebetsang habeli sa ho futhumatsa mocheso kapa se retang lelakabe.
More info., pls contact lucy@taifeng-fr.com
Nako ea poso: Jul-01-2025
