Ese ibigabanya umuriro bya Fosforu na Azote bishobora kugera ku manota ya V0 muri silicone rubber?
Iyo abakiriya babajije ku bijyanye no gukoresha aluminium hypophosphite (AHP) cyangwa AHP + MCA gusa kugira ngo habeho halogen-fire retardancy muri silicone rubber kugira ngo bagere ku gipimo cya V0, igisubizo ni yego—ariko isuzuma ry'ingano rirakenewe hashingiwe ku bisabwa ku ihindagurika ry'umuriro. Hasi hari inama zihariye ku bihe bitandukanye:
1. Gukoresha Aluminium Hypophosphite (AHP) gusa
Ingero zikurikizwa: Ku bisabwa na UL94 V-1/V-2 cyangwa ku bikoresho bifatwa nk'ibikomoka kuri azote (urugero, kwirinda ingaruka z'ifuro rituruka kuri MCA rishobora kugira ingaruka ku isura).
Uburyo bwo gukora busabwa:
- Rubber y'ibanze: Rubber ya silikoni ya Methyl vinyl (VMQ, 100 phr)
- Hypophosite ya aluminiyumu (AHP): 20–30 phr
- Fosifore nyinshi (40%); 20 phr itanga fosifore ingana na ~8% mu gutuma umuriro udakora neza.
- Kuri UL94 V-0, zamuka ugere kuri 30 phr (bishobora kugira ingaruka ku miterere ya mekanike).
- Ingufu zo kongera imbaraga: Silika ifumye (10–15 phr, ikomeza imbaraga)
- Inyongeramusaruro: Amavuta ya Hydroxyl silicone (2 phr, atuma itunganywa neza) + umuti uvura (peroxide cyangwa sisitemu ya platine)
Ibiranga:
- AHP yonyine ikoresha uburyo bwo gutinda kw'umuriro bukozwe mu buryo bwa "condensed phase flame" (char formation), ikongera cyane oxygen index (LOI) ya silicone rubber ariko igabanya umwotsi muke.
- Igipimo kinini (>25 phr) gishobora kongera ubukana bw'ibikoresho; kongeramo 3-5 phr zinc borate bishobora kongera ubwiza bw'urwego rwa char.
2. Uruvange rwa AHP + MCA
Ingero zikurikizwa: Ibisabwa na UL94 V-0, bigamije ko habaho ingano nto y’inyongera hamwe n’ubufatanye butuma umuriro utagira gazi ugabanuka.
Uburyo bwo gukora busabwa:
- Rubber y'ibanze: VMQ (amajwi 100)
- Hypophosite ya aluminiyumu (AHP): 12–15 phr
- Itanga isoko ya fosifore, ikanateza imbere ikorwa ry'ibyatsi.
- MCA: 8–10
- Isoko ya azote ikorana na AHP (ingaruka za PN), irekura imyuka idafite imbaraga (urugero, NH₃) kugira ngo ihagarike gukwirakwira kw'umuriro.
- Ifuru yo kongera imbaraga: Silika ifumye (ibice 10)
- Inyongeramusaruro: Silane coupling agent (1 phr, itera imbere gukwirakwira) + umuti uvura
Ibiranga:
- Igipimo cyose cy'umucanwa kidakoresha umuriro: ~ 20–25 phr, kiri hasi cyane ugereranyije na AHP yonyine.
- MCA igabanya igipimo cya AHP ariko ishobora kugira ingaruka nke ku mucyo (nano-MCA isabwa niba mucyo ukenewe).
3. Kugereranya Ibipimo by'ingenzi
| Uburyo bwo gukora | Ihindagurika ry'umuriro ryitezwe | Igipimo cyose (phr) | Ibyiza n'ibibi |
|---|---|---|---|
| AHP yonyine (amadosiye 20) | UL94 V-1 | 20 | Byoroshye kandi bihendutse; V-0 isaba ≥30 phr, hamwe no kwangirika k'imikorere. |
| AHP yonyine (amadosiye 30) | UL94 V-0 | 30 | Idakora cyane ariko ubukana bwayo burushaho kwiyongera no kugabanuka k'uburebure. |
| AHP 15 + MCA 10 | UL94 V-0 | 25 | Ingaruka z'ubufatanye, imikorere iringaniye—birasabwa mu igeragezwa rya mbere. |
4. Ibyifuzo byo kugerageza
- Ikizamini cy’ibanze cya AHP + MCA (15 + 10 phr): Niba V-0 igezweho, gabanya AHP buhoro buhoro (urugero, 12 + 10).
- Igenzura rya AHP ryonyine: Tangira kuri 20 phr, wongereho 5 phr kuri buri kizamini kugira ngo usuzume LOI na UL94, ukurikirane impinduka mu miterere y'ibikoresho.
- Ibikenewe mu kugabanya umwotsi: Shyiramo 3-5 phr zinc borate muri za formulaire zavuzwe haruguru kugira ngo ugabanye umwotsi udahungabanya ubushyuhe bw'inkongi.
5. Amwe mu mavuta ya Ammonium Polyphosphate atwikiriwe
Hari abakiriya bamwe bakoresha neza TF-201G mu gukora silicon rubber.
Kugira ngo urusheho kunoza, tekereza gushyiramo ingano nto ya aluminiyumu hidroksidi (10–15 phr) kugira ngo ugabanye ikiguzi rusange, nubwo ibi byongera ingano y'ibirungo byose.
More inof., pls contact lucy@taifeng-fr.com
Igihe cyo kohereza: 25 Nyakanga-2025
