Ikimenyetso cya flame retardant formulaire ya SK Polyester ES500 (UL94 V0 amanota).
I. Uburyo bwo Gutegura Uburyo
- Substrate Guhuza
- SK Polyester ES500: Polyester ya termoplastique ifite ubushyuhe busanzwe bwo gutunganya ubushyuhe bwa 220-260 ° C. Flame retardant igomba kwihanganira ubu bushyuhe.
- Ibisabwa by'ingenzi: Kuringaniza flame retardancy (V0), imiterere ya mashini (tensile / ingaruka imbaraga), hamwe no gutunganya amazi.
- Sisitemu ya Flame Retardant Sisitemu
- Ultrafine Aluminium Hydroxide (ATH): Ibanze rya flame retardant, endothermic dehydration. Kwikoreza bigomba kuringaniza flame idindira hamwe nubukanishi.
- Aluminium Hypophosphite: Gukora char-synergiste, ikorana na ATH kugirango ikore fosifore-aluminium ikora neza, itezimbere ubwiza bwa char.
- Zinc Borate: Yongera imbaraga, irwanya umwotsi, kandi ikora inzitizi yuzuye hamwe na ATH.
- MCA (Melamine Cyanurate): Gaz-fase flame retardant, igabanya ogisijeni kandi ikabuza gutonyanga gushonga.
II. Basabwe Gutegura (Ibipimo by'ibiro)
| Ibigize | Ikigereranyo | Inyandiko |
|---|---|---|
| SK Polyester ES500 | 45-50% | Base base; hitamo urwego-rwinshi rwo hejuru kugirango wishyure ubwuzuzanye bwuzuye. |
| Ultrafine ATH | 25-30% | Ubuso bwahinduwe hamwe na silane ihuza (KH-550), D50 <3 μ m. |
| Aluminium Hypophosphite | 10-12% | Ubushyuhe budashobora gushyuha (> 300 ° C), mbere-ivanze na ATH hanyuma ikongerwaho mubyiciro. |
| Zinc Borate | 6-8% | Wongeyeho na MCA kugirango wirinde kwangirika kwimyubakire. |
| MCA | 4-5% | Ubushyuhe bwo gutunganya <250 ° C, gutatanya umuvuduko muke. |
| Gutatana | 2–3% | Ikwirakwizwa rya polyester (urugero, BYK-161) + ibishashara bya polyethylene. |
| Umukozi wo guhuza (KH-550) | 1% | Mbere yo kuvura ATH na aluminium hypophosphite; kwibiza Ethanol bikurikirwa no gukama. |
| Umukozi urwanya ibiyobyabwenge | 0.5-1% | PTFE micropowder kugirango ihagarike gushonga. |
| Imfashanyo yo gutunganya | 0.5% | Zinc stearate (lubrication na anti-sticking). |
III. Igenzura ryingenzi
- Gukwirakwiza ibintu
- Mbere yo kuvura: Shira ATH na aluminium hypophosphite muri 1% KH-550 umuti wa Ethanol mumasaha 2, hanyuma wumuke kuri 80 ° C.
- Kuvanga Urukurikirane:
- Base resin + ikwirakwiza + umukozi wo guhuza mix Kuvanga umuvuduko muke (500 rpm, 5 min).
- Ongeramo ATH / aluminium hypophosphite → Shear yihuta cyane (2500 rpm, 20 min).
- Ongeramo zinc borate / MCA / PTFE mix Kuvanga umuvuduko muke (800 rpm, 10 min).
- Ibikoresho: Extruder Twin-screw (zone yubushyuhe: agace kagaburira 200 ° C, akarere gashonga 230 ° C, gupfa 220 ° C).
- Gutunganya Ubushyuhe
- Menya neza ko ubushyuhe bwashonga <250 ° C kugirango wirinde kwangirika kwa MCA (MCA ibora kuri 250-300 ° C).
- Amazi akonje pellet nyuma yo kuyakuramo kugirango wirinde kwimuka kwimuka.
IV. Flame Retardant Synergistic Mechanism
- ATH + Hypophosphite ya Aluminium
- ATH ikurura ubushyuhe kandi ikarekura imyuka y'amazi, ikagabanya imyuka yaka umuriro.
- Aluminium hypophosphite itera kwibumbira hamwe (AlPO₄), ikabuza kohereza ubushyuhe.
- Zinc Borate + MCA
- Zinc borate ikora inzitizi yikirahure hejuru ya char crack.
- MCA ibora kurekura NH₃, kugabanya ogisijeni no kubuza reaction yubusa.
- PTFE Kurwanya Gutonyanga
- Micropowder ya PTFE ikora urusobe rwa fibrous, igabanya ibyago byo gutwika.
V. Guhuza imikorere & Gukemura ibibazo
| Ikibazo Rusange | Igisubizo |
|---|---|
| Kubuza umuriro munsi ya V0 (V1 / V2) | Ongera hypophosphite ya aluminium kuri 12% + MCA kuri 5%, cyangwa wongereho 2% fosifore itukura (synergiste na hypophosphite ya aluminium). |
| Kugabanya imiterere yubukanishi | Mugabanye ATH kugeza kuri 25%, ongeramo 5% fibre fibre (reinforment) cyangwa 3% ya manic anhydride-yashizwemo POE (toughening). |
| Amazi meza yo gutunganya | Ongera utatanye kuri 3%, cyangwa wongereho 0.5% ibishashara bya MW-polyethylene (lubrication). |
| Ubuso burabya | Hindura uburyo bwo guhuza dosiye cyangwa uhindure kuri titanate ihuza (NDZ-201) kugirango uhuze neza. |
VI. Ibipimo byo Kwemeza
- Ikizamini cya UL94 V0:
- 1,6 mm na 3,2 mm ingero, igihe cyose cyo gutwika <50 amasegonda nyuma yo gutwikwa kabiri, nta gutwika gutonyanga.
- LOI: Intego ≥30% (nyayo ≥28%).
- Ibikoresho bya mashini:
- Imbaraga zingana> 40 MPa, imbaraga zingaruka> 5 kJ / m² (ASTM isanzwe).
- Ubushyuhe bwumuriro (TGA):
- Ibisigisigi bya char kuri 800 ° C> 20%, ubushyuhe bwambere bwo kubora> 300 ° C.
VII. Urugero rwerekana
| Ibigize | Ibirimo (%) |
|---|---|
| SK Polyester ES500 | 48% |
| Ultrafine ATH (yahinduwe) | 28% |
| Aluminium Hypophosphite | 11% |
| Zinc Borate | 7% |
| MCA | 4% |
| BYK-161 Bitatanye | 2,5% |
| KH-550 Umukozi wo guhuza | 1% |
| PTFE Umukozi urwanya ibiyobyabwenge | 0.8% |
| Zinc Stearate | 0.5% |
Ubu buryo bwo gutunganya no gutunganya uburyo bugera kuri UL94 V0 flame idindiza kuri SK Polyester ES500 mugihe iringaniza imikorere hamwe nubukanishi. Ibigeragezo bito birasabwa kugenzura itandukaniro mbere yo kugereranya neza (urugero, kuringaniza aluminium hypophosphite na MCA). Kugirango urusheho kwiyongera kwa flame retardancy, tekereza kongeramo 2% ya boron nitride nanosheets (BNNS) nkibintu bibiri-bikora-ubushyuhe bwumuriro / flame retardant wuzuza.
More info., pls contact lucy@taifeng-fr.com
Igihe cyo kohereza: Jul-01-2025
