Ngaba i-Phosphorus-Nitrogen Retardants ye-Flame Retardants inokufezekisa ukulinganisa kwe-V0 kwiRubha yeSilicone?
Xa abathengi babuza malunga nokusebenzisa kuphela i-aluminium hypophosphite (AHP) okanye i-AHP + MCA indibaniselwano ye-halogen-free flame retardancy kwi-rubber ye-silicone ukufezekisa ukulinganisa kwe-V0, impendulo ngu-ewe-kodwa ulungelelaniso lwedosi luyafuneka ngokusekelwe kwiimfuno ze-flame retardancy. Apha ngezantsi kukho iingcebiso ezithile zeemeko ezahlukeneyo:
1. Ukusebenzisa i-Aluminiyam Hypophosphite (AHP) Yodwa
Iimeko ezisebenzayo: Kwiimfuno ze-UL94 V-1/V-2 okanye izicelo ezinovakalelo kwimithombo yenitrogen (umzekelo, ukuphepha iziphumo ezinogwebu ezivela kwi-MCA ezinokuchaphazela inkangeleko).
Uqulunqo olucetyiswayo:
- Isiseko serabha: Irabha ye-Methyl vinyl silicone (VMQ, 100 phr)
- I-Aluminiyam hypophosphite (AHP): 20-30 phr
- Umxholo wephosphorus ophezulu (40%); I-20 phr inikezela ~ 8% umxholo we-phosphorus kwisiseko somlilo osisiseko.
- Kwi-UL94 V-0, ukunyuka ukuya kwi-30 phr (inokuchaphazela iimpawu zomatshini).
- Ukuqinisa isihluzi: Isilica evuthayo (10–15 phr, igcina amandla)
- Izongezo: Ioli ye-silicone ye-Hydroxyl (i-2 phr, iphucula ukusetyenzwa) + i-arhente yokunyanga (i-peroxide okanye inkqubo yeplatinam)
Iimpawu:
- I-AHP iyodwa ixhomekeke kwi-condensed-phase-flame retardancy (ukwenziwa kwe-char), iphucula kakhulu isalathisi se-oksijini (LOI) yerabha ye-silicone kodwa ngokuncitshiswa komsi okulinganiselweyo.
- Idosi ephezulu (> 25 phr) inokunyusa ubunzima bezinto eziphathekayo; ukongeza i-3-5 phr zinc borate inokuphucula umgangatho we-char layer.
2. AHP + MCA Udibaniso
Iimeko ezisebenzayo: Iimfuno ze-UL94 V-0, ezijolise kwidosi ephantsi yokongeza kunye ne-gas-phase flame retardant synergy.
Uqulunqo olucetyiswayo:
- Isiseko serabha: VMQ (100 phr)
- I-Aluminiyam hypophosphite (AHP): 12-15 phr
- Inika umthombo we-phosphorus, ikhuthaza ukubunjwa kwe-char.
- I-MCA: 8–10 phr
- Umthombo we-nitrogen udibana ne-AHP (isiphumo se-PN), ukukhulula iigesi ezingenayo (umzekelo, i-NH₃) ukucinezela ukusasazeka kwedangatye.
- Ukuqinisa isihluzi: Isilica evuthayo (10 phr)
- Izongezo: I-arhente yokudibanisa iSilane (1 phr, iphucula ukusasazwa) + iarhente yokunyanga
Iimpawu:
- Iyonke idosi yokubuyiswa komlilo: ~20–25 phr, isezantsi kakhulu kune-AHP iyodwa.
- I-MCA yehlisa idosi ye-AHP kodwa inokuchaphazela kancinane ukungafihli (i-nano-MCA iyacetyiswa ukuba kufuneka elubala).
3. Uthelekiso lweParameter engundoqo
| Ukuqulunqwa | Kulindeleke ukuba iLanga liBandeke | Umthamo uwonke (phr) | IiPros & Cons |
|---|---|---|---|
| I-AHP iyodwa (20 phr) | UL94 V-1 | 20 | Ilula, ixabiso eliphantsi; I-V-0 ifuna ≥30 phr, kunye nokuthotywa kokusebenza. |
| I-AHP iyodwa (30 phr) | UL94 V-0 | 30 | Ukwehla komlilo ophakamileyo kodwa ukonyuka kokuqina kunye nokuncipha kobude. |
| AHP 15 + MCA 10 | UL94 V-0 | 25 | Isiphumo se-Synergistic, ukusebenza ngokulinganayo-kucetyiswa kwizilingo zokuqala. |
4. Iingcebiso zoMfuniselo
- Uvavanyo oluphambili lwe-AHP + MCA (15+10 phr): Ukuba i-V-0 iphunyeziwe, nciphisa ngokuthe ngcembe i-AHP (umz., 12+10).
- Ukuqinisekiswa kwe-AHP yodwa: Qala kwi-20 phr, ukwandisa nge-5 phr ngovavanyo ngalunye ukuvavanya i-LOI kunye ne-UL94, ukubeka esweni utshintsho lwepropati yomatshini.
- Iimfuno zokuthomalalisa umsi: Yongeza i-3–5 phr zinc borate kule mixube ingasentla ukunciphisa umsi ngaphandle kokubeka esichengeni ukubuyiswa komlilo.
5. Ezinye iCoated Ammonium Polyphosphate
Sinabathengi abathile abasebenzisa ngempumelelo i-TF-201G yerabha yesilicon.
Ukuphucula ngakumbi, cinga ukufaka ixabiso elincinci le-aluminium hydroxide (10-15 phr) ukunciphisa iindleko ezipheleleyo, nangona oku kwandisa umxholo wokuzalisa.
More inof., pls contact lucy@taifeng-fr.com
Ixesha lokuposa: Jul-25-2025
