Kodi Phosphorus-Nitrogen Flame Retardants Angakwaniritse Mayeso a V0 mu Rubber wa Silicone?
Makasitomala akamafunsa za kugwiritsa ntchito aluminium hypophosphite (AHP) kapena AHP + MCA yokha yophatikizira moto wopanda halogen mu mphira wa silikoni kuti akwaniritse mlingo wa V0, yankho ndi inde-koma kusintha kwa mlingo kumafunika potengera zomwe zimafunikira pakuchedwa kwamoto. M'munsimu muli malingaliro apadera pazochitika zosiyanasiyana:
1. Kugwiritsa ntchito Aluminium Hypophosphite (AHP) Payekha
Zomwe zingagwiritsidwe ntchito: Pazofunikira za UL94 V-1/V-2 kapena zokhudzidwa ndi magwero a nayitrogeni (monga kupewa kuchita thovu kuchokera ku MCA komwe kungasokoneze mawonekedwe).
Kapangidwe kovomerezeka:
- Rabara yoyambira: rabara ya methyl vinyl silicone (VMQ, 100 phr)
- Aluminium hypophosphite (AHP): 20-30 phr
- Kuchuluka kwa phosphorous (40%); 20 phr imapereka ~ 8% ya phosphorous yokwanira pakuchepetsa mphamvu yamoto.
- Kwa UL94 V-0, onjezani mpaka 30 phr (zitha kukhudza makina).
- Zowonjezera zowonjezera: Silika yamoto (10-15 phr, imasunga mphamvu)
- Zowonjezera: Mafuta a silicone a Hydroxyl (2 phr, amathandizira kukonza) + machiritso (peroxide kapena platinamu system)
Makhalidwe:
- AHP yokha imadalira kuchepetsa moto wa condensed-phase (char mapangidwe), kuwongolera kwambiri index ya okosijeni (LOI) ya mphira wa silikoni koma ndi kuponderezedwa kwa utsi wochepa.
- Mlingo wambiri (> 25 phr) ukhoza kuwonjezera kuuma kwa zinthu; kuwonjezera 3-5 phr zinc borate kumatha kupititsa patsogolo mtundu wa char layer.
2. Kuphatikiza kwa AHP + MCA
Zomwe zingagwiritsidwe ntchito: Zofunikira za UL94 V-0, zomwe zimayang'ana pamlingo wocheperako wowonjezera wokhala ndi gawo lamagetsi oletsa moto.
Kapangidwe kovomerezeka:
- Rabara yoyambira: VMQ (100 phr)
- Aluminium hypophosphite (AHP): 12-15 phr
- Amapereka phosphorous gwero, amalimbikitsa mapangidwe char.
- MCA: 8-10 phr
- Gwero la nayitrojeni limalumikizana ndi AHP (PN effect), kutulutsa mpweya wa inert (monga, NH₃) kuti utseke kufalikira kwa lawi.
- Zowonjezera zowonjezera: Silika yamoto (10 phr)
- Zowonjezera: Silane coupling agent (1 phr, imathandizira kubalalitsidwa) + wothandizira
Makhalidwe:
- Mlingo wonse woletsa moto: ~ 20-25 phr, otsika kwambiri kuposa AHP yokha.
- MCA imachepetsa mlingo wa AHP koma ingakhudze pang'ono kuwonekera (nano-MCA ikulimbikitsidwa ngati kuwonekera pakufunika).
3. Kufananiza kwa Parameter Yofunika
| Kupanga | Kuchedwa kwa Flame Retardancy | Mulingo Wonse (phr) | Ubwino & Zoipa |
|---|---|---|---|
| AHP yokha (20 phr) | UL94 V-1 | 20 | Zosavuta, zotsika mtengo; V-0 imafuna ≥30 phr, ndikuwonongeka kwa magwiridwe antchito. |
| AHP yokha (30 phr) | UL94 V-0 | 30 | Kuchedwa kwakukulu kwa lawi koma kuwonjezeka kuuma ndi kuchepetsa kutalika. |
| AHP 15 + MCA 10 | UL94 V-0 | 25 | Mphamvu ya Synergistic, magwiridwe antchito abwino-omwe akulimbikitsidwa kuyeserera koyambirira. |
4. Malangizo Oyesera
- Kuyesa koyambirira kwa AHP + MCA (15+10 phr): Ngati V-0 ikwaniritsidwa, chepetsani AHP pang'onopang'ono (mwachitsanzo, 12+10).
- Chitsimikizo chokha cha AHP: Yambani pa 20 phr, onjezerani 5 phr pa mayeso kuti muyese LOI ndi UL94, kuyang'anira kusintha kwa katundu.
- Zofunikira zoletsa utsi: Onjezani 3–5 phr zinc borate ku mankhwala omwe ali pamwambawa kuti muchepetse utsi popanda kuwononga kuchedwa kwa malawi.
5. Ena yokutidwa Ammonium Polyphosphate
Tili ndi makasitomala omwe amagwiritsa ntchito bwino TF-201G pamphira wa silicon.
Kuti muwonjezere kukhathamiritsa, lingalirani zophatikizira zocheperako za aluminiyamu hydroxide (10-15 phr) kuti muchepetse ndalama zonse, ngakhale izi zimakulitsa zodzaza zonse.
More inof., pls contact lucy@taifeng-fr.com
Nthawi yotumiza: Jul-25-2025
