Ingabe I-Phosphorus-Nitrogen Flame Retardants Ingakwazi Ukufinyelela Isilinganiso se-V0 ku-Silicone Rubber?
Uma amakhasimende ebuza mayelana nokusebenzisa kuphela izinhlanganisela ze-aluminium hypophosphite (AHP) noma i-AHP + MCA ye-halogen-free flame retardancy kurabha ye-silicone ukuze kufinyelelwe isilinganiso se-V0, impendulo inguyebo—kodwa ukulungiswa kwemithamo kuyadingeka ngokusekelwe ezimfuneko zokubuyiswa komlilo. Ngezansi kunezincomo eziqondile zezimo ezahlukahlukene:
1. Ukusebenzisa i-Aluminium Hypophosphite (AHP) Yodwa
Izimo ezisebenzayo: Ngezidingo ze-UL94 V-1/V-2 noma izinhlelo zokusebenza ezizwelayo emithonjeni ye-nitrogen (isb, ukugwema imiphumela ekhihliza amagwebu evela ku-MCA engase ithinte ukubukeka).
Ukwakhiwa okunconyiwe:
- Irabha eyisisekelo: Irabha ye-Methyl vinyl silicone (VMQ, 100 phr)
- I-Aluminium hypophosphite (AHP): 20–30 phr
- I-phosphorus ephezulu (40%); I-20 phr inikeza ~ 8% okuqukethwe kwe-phosphorus ekubambezelekeni komlilo okuyisisekelo.
- Ku-UL94 V-0, khuphuka ufike ku-30 phr (kungase kuthinte izakhiwo zokukhanda).
- I-reinforcing filler: I-silica evuthayo (10–15 phr, igcina amandla)
- Izithasiselo: Uwoyela we-silicone we-Hydroxyl (2 phr, uthuthukisa ukucubungula) + i-ejenti yokwelapha (i-peroxide noma uhlelo lweplatinamu)
Izici:
- I-AHP iyodwa incike ekuncipheni komlilo wesigaba esijiyile (ukwakheka kwe-char), ithuthukisa kakhulu inkomba ye-oxygen (LOI) yerabha ye-silicone kodwa ngokucindezelwa kwentuthu okulinganiselwe.
- Umthamo ophezulu (>25 phr) ungase ukhulise ubulukhuni bezinto ezibonakalayo; ukwengeza i-3–5 phr zinc borate kungathuthukisa ikhwalithi ye-char layer.
2. Inhlanganisela ye-AHP + MCA
Izimo ezisebenzayo: Izidingo ze-UL94 V-0, ezihloselwe ukulinganisa okungeziwe okuphansi okune-gas-phase flame retardant synergy.
Ukwakhiwa okunconyiwe:
- Irabha eyisisekelo: VMQ (100 phr)
- I-Aluminium hypophosphite (AHP): 12–15 phr
- Inikeza umthombo we-phosphorus, ikhuthaza ukwakheka kwe-char.
- I-MCA: 8-10 phr
- Umthombo we-nitrogen uhambisana ne-AHP (umphumela we-PN), ukhulula amagesi angenayo (isb, i-NH₃) ukuze ucindezele ukusabalala kwelangabi.
- Isigcwalisi esiqinisayo: I-silica evuthayo (10 phr)
- Izengezo: I-ejenti yokuhlanganisa yeSilane (1 phr, ithuthukisa ukuhlakazwa) + i-ejenti yokwelapha
Izici:
- Isamba somthamo we-flame retardant: ~20–25 phr, ngaphansi kakhulu kune-AHP iyodwa.
- I-MCA yehlisa umthamo we-AHP kodwa ingase ithinte kancane obala (i-nano-MCA iyanconywa uma kudingeka ukuba obala).
3. Ukuqhathanisa Okubalulekile Kwepharamitha
| Ukwakhiwa | Ukuncipha Kwelangabi Okulindelekile | Isamba somthamo (phr) | Okuhle nokubi |
|---|---|---|---|
| I-AHP iyodwa (20 phr) | I-UL94 V-1 | 20 | Elula, izindleko eziphansi; I-V-0 idinga ≥30 phr, ngokonakaliswa kokusebenza. |
| I-AHP iyodwa (30 phr) | I-UL94 V-0 | 30 | Ukubambezeleka komlilo okuphezulu kodwa ukuqina kwanda kanye nobude obuncishisiwe. |
| I-AHP 15 + MCA 10 | I-UL94 V-0 | 25 | Umphumela we-Synergistic, ukusebenza okulinganiselayo—kunconyelwe ukuhlolwa kokuqala. |
4. Izincomo Zokuhlola
- Ukuhlolwa okubalulekile kwe-AHP + MCA (15+10 phr): Uma i-V-0 ifinyelelwa, yehlisa kancane kancane i-AHP (isb, 12+10).
- Ukuqinisekiswa kwe-AHP kuphela: Qala ku-20 phr, ukhuphuke ngo-5 phr ngokuhlolwa ngakunye ukuze uhlole i-LOI ne-UL94, ugade izinguquko zempahla emishini.
- Izidingo zokucindezelwa intuthu: Engeza i-zinc borate engu-3–5 phr kulezi zinto ezibalwe ngenhla ukuze unciphise intuthu ngaphandle kokuphazamisa ukuncipha komlilo.
5. Enye Coated Ammonium Polyphosphate
Sinamanye amakhasimende asebenzisa ngempumelelo i-TF-201G yerabha ye-silicon.
Ukuze uthole okwengeziwe, cabanga ukufaka amanani amancane e-aluminium hydroxide (10–15 phr) ukuze unciphise izindleko zizonke, nakuba lokhu kwandisa okuqukethwe kokugcwalisa.
More inof., pls contact lucy@taifeng-fr.com
Isikhathi sokuthumela: Jul-25-2025
