Ifomula ebhekisela ekubambeni ilangabi ye-SK Polyester ES500 (isilinganiso se-UL94 V0).
I. Indlela Yokuklama Ukwakheka
- Ukuhambisana kwe-Substrate
- I-SK Polyester ES500: I-polyester ye-thermoplastic enezinga lokushisa elijwayelekile lokucubungula elingu-220–260°C. I-flame retardant kumele imelane naleli banga lokushisa.
- Izidingo Eziyinhloko: Ukulinganisela ukuncipha komlilo (V0), izakhiwo zemishini (amandla okudonsa/okushaya), kanye nokugeleza kokucubungula.
- Uhlelo Lokubuyisana Lomlilo Oluhambisanayo
- I-Ultrafine Aluminium Hydroxide (ATH): I-primary flame retardant, endothermic dehydration. Ukulayisha kumele kulinganisele i-flame retardant kanye nezakhiwo zemishini.
- I-Aluminium Hypophosphite: I-Char-forming synergist, isebenza ne-ATH ukudala umphumela we-phosphorus-aluminium synergistic, okuthuthukisa ikhwalithi ye-char.
- I-Zinc Borate: Isithuthukisi se-Char, sicindezela intuthu, futhi sakha isithiyo esiqinile nge-ATH.
- I-MCA (i-Melamine Cyanurate): I-gas-phase flame retardant, inciphisa umoya-mpilo futhi ivimbele ukuvuza kokuncibilika.
II. Ukwakheka Okunconywayo (Iphesenti Lesisindo)
| Ingxenye | Isilinganiso | Amanothi Okucubungula |
|---|---|---|
| I-SK Polyester ES500 | 45–50% | I-resin eyisisekelo; khetha izinga lokugeleza okuphezulu ukuze ubuyisele ukugcwala kokugcwalisa. |
| I-ATH e-Ultrafine | 25–30% | Ingaphezulu eliguquliwe nge-ejenti yokuxhuma ye-silane (KH-550), D50 < 3 μm. |
| I-Aluminium Hypophosphite | 10–12% | Ayimelani nokushisa (>300°C), ixutshwe ne-ATH futhi yengezwe ngezigaba. |
| I-Zinc Borate | 6–8% | Kungezwe ne-MCA ukuze kugwenywe umonakalo wesakhiwo ogugile kakhulu. |
| I-MCA | 4–5% | Izinga lokushisa lenqubo < 250°C, ukusabalala kwesivinini esiphansi. |
| Isihlanzi | 2–3% | Isihlanzisi esihambisana ne-polyester (isb., i-BYK-161) + i-polyethylene wax composite. |
| I-ejenti Yokuxhuma (KH-550) | 1% | Ilungisa i-ATH kanye ne-aluminium hypophosphite kusengaphambili; ukucwiliswa kwe-ethanol kulandelwe ukomiswa. |
| I-Anti-Dripping Ejenti | 0.5–1% | I-PTFE micropowder yokucindezela ukushaqeka okuncibilikayo. |
| Usizo Lokucubungula | 0.5% | I-Zinc stearate (ukugcoba kanye nokunganamatheli). |
III. Izilawuli Zenqubo Eziyinhloko
- Ukuthuthukiswa Kokuhlakazeka
- Ngaphambi kokwelashwa: Cwilisa i-ATH kanye ne-aluminium hypophosphite kusisombululo se-ethanol esingu-1% KH-550 amahora ama-2, bese uyomisa ku-80°C.
- Ukulandelana Kokuxuba:
- I-base resin + i-dispersant + i-coupling agent → Ukuxuba okunesivinini esiphansi (500 rpm, imizuzu emi-5).
- Engeza i-ATH/aluminium hypophosphite eguquliwe → I-High-speed shear (2500 rpm, imizuzu engama-20).
- Engeza i-zinc borate/MCA/PTFE → Ukuxuba ngesivinini esiphansi (800 rpm, imizuzu eyi-10).
- Imishini: I-extruder enama-screw amabili (izindawo zokushisa: indawo yokudla engu-200°C, indawo yokuncibilika engu-230°C, i-die 220°C).
- Ukulawulwa Kokushisa Kokucubungula
- Qinisekisa ukuthi izinga lokushisa lokuncibilika lingaphansi kuka-250°C ukuze uvimbele ukubola kwe-MCA (i-MCA iyabola ku-250–300°C).
- Ama-pellets apholile ngamanzi ngemva kokukhipha ukuze kuvinjelwe ukufuduka okubamba ilangabi.
IV. Indlela Yokusebenzisana Evimbela Amalangabi
- I-ATH + i-Aluminium Hypophosphite
- I-ATH imunca ukushisa futhi ikhiphe umhwamuko wamanzi, inciphise amagesi avuthayo.
- I-aluminium hypophosphite ikhuthaza ukwakheka kwe-dense char (AlPO₄), ivimba ukudluliselwa kokushisa.
- I-Zinc Borate + MCA
- I-Zinc borate yakha isithiyo esinjengengilazi phezu kwemifantu ye-char.
- I-MCA iyabola ukuze ikhiphe i-NH₃, inciphise umoya-mpilo futhi ivimbele ukusabela kwama-free radical.
- I-PTFE Anti-Dripping
- I-PTFE micropowder yakha inethiwekhi ye-fibrous, inciphisa ingozi yokusha kwe-melt-drip.
V. Ukulungisa Ukusebenza Nokuxazulula Izinkinga
| Inkinga Evamile | Isixazululo |
|---|---|
| Ukuncipha komlilo ngaphansi kwe-V0 (V1/V2) | Khulisa i-aluminium hypophosphite ibe ngu-12% + MCA ibe ngu-5%, noma engeza i-phosphorus ebomvu ehlanganisiwe engu-2% (ehambisana ne-aluminium hypophosphite). |
| Izakhiwo zemishini ezincishisiwe | Yehlisa i-ATH ibe ngu-25%, engeza i-5% ye-glass fiber (ukuqinisa) noma i-3% ye-maleic anhydride-grafted POE (ukuqinisa). |
| Ukugeleza kokucubungula okubi | Khulisa i-dispersant ibe ngu-3%, noma engeza i-wax ye-polyethylene ephansi engu-0.5% (ukugcoba). |
| Ukuqhakaza kobuso | Lungiselela umthamo we-coupling agent noma ushintshele ku-titanate coupling agent (NDZ-201) ukuze uthole i-interfacial bonding engcono. |
VI. Amamethrikhi Okuqinisekisa
- Ukuhlolwa kwe-UL94 V0:
- Amasampula angu-1.6 mm kanye no-3.2 mm, isikhathi sokusha esiphelele < imizuzwana engu-50 ngemva kokusha okubili, akukho ukusha okuconsayo.
- I-LOI: Inhloso ≥30% (yangempela ≥28%).
- Izakhiwo Zemishini:
- Amandla okunamathela > 40 MPa, amandla okushaya > 5 kJ/m² (okujwayelekile kwe-ASTM).
- Ukuzinza Kokushisa (TGA):
- Izinsalela ze-Char ku-800°C > 20%, izinga lokushisa lokuqala lokubola > 300°C.
VII. Ukwakhiwa Kwezibonelo Zereferensi
| Ingxenye | Okuqukethwe (%) |
|---|---|
| I-SK Polyester ES500 | 48% |
| I-ATH e-Ultrafine (eguquliwe) | 28% |
| I-Aluminium Hypophosphite | 11% |
| I-Zinc Borate | 7% |
| I-MCA | 4% |
| I-BYK-161 Dispersant | 2.5% |
| I-ejenti Yokuxhumanisa ye-KH-550 | 1% |
| I-ejenti ye-PTFE yokulwa nokuconsa | 0.8% |
| I-Zinc Stearate | 0.5% |
Lokhu kwakheka kanye nomklamo wenqubo kufeza ngempumelelo ukuvimbela ilangabi kwe-UL94 V0 kwe-SK Polyester ES500 ngenkathi kulinganiswa ukucubungula kanye nezakhiwo zemishini. Kunconywa izivivinyo ezincane ukuqinisekisa ukuhlakazeka ngaphambi kokulinganisa okuhle (isb., ukulinganisa i-aluminium hypophosphite kanye ne-MCA). Ukuze uthole ukuthuthukiswa okwengeziwe kokuvimbela ilangabi, cabanga ngokungeza ama-nanosheet e-boron nitride angu-2% (BNNS) njengesigcwalisi sokushisa esisebenza kabili/esivimbela ilangabi.
More info., pls contact lucy@taifeng-fr.com
Isikhathi sokuthunyelwe: Julayi-01-2025
