Kodi Zoletsa Moto za Phosphorus-Nitrogen Zingafikire V0 Rating mu Silicone Rubber?
Makasitomala akafunsa za kugwiritsa ntchito aluminiyamu hypophosphite (AHP) kapena kuphatikiza kwa AHP + MCA kokha kuti achepetse moto wopanda halogen mu rabara ya silicone kuti akwaniritse V0, yankho ndi inde—koma kusintha kwa mlingo kumafunika kutengera zofunikira pakuchepetsa moto. Pansipa pali malangizo apadera pazochitika zosiyanasiyana:
1. Kugwiritsa Ntchito Aluminium Hypophosphite (AHP) Yokha
Zochitika zomwe zingagwiritsidwe ntchito: Pazofunikira za UL94 V-1/V-2 kapena ntchito zomwe zimakhudzidwa ndi magwero a nayitrogeni (monga kupewa zotsatira za thovu kuchokera ku MCA zomwe zingakhudze mawonekedwe).
Mankhwala ofunikira:
- Rabala yoyambira: Rabala ya silikoni ya Methyl vinyl (VMQ, 100 phr)
- Aluminium hypophosphite (AHP): 20–30 phr
- Kuchuluka kwa phosphorous (40%); 20 ph kumapereka phosphorous pafupifupi 8% kuti ichepetse moto.
- Pa UL94 V-0, onjezerani kufika pa 30 phr (zingakhudze mawonekedwe a makina).
- Chowonjezera chowonjezera: Silika yofumira (10–15 phr, imasunga mphamvu)
- Zowonjezera: Mafuta a Hydroxyl silicone (2 phr, amakonza bwino) + chothandizira kuchiritsa (peroxide kapena platinamu)
Makhalidwe:
- AHP yokha imadalira kufooka kwa moto m'gawo lozungulira (kupanga kwa char), zomwe zimapangitsa kuti mpweya wa oxygen index (LOI) wa rabara ya silicone ukhale wabwino kwambiri koma utsi wake sungathe kuchepetsedwa.
- Mlingo wochuluka (>25 phr) ukhoza kuwonjezera kuuma kwa zinthu; kuwonjezera 3-5 phr zinc borate kungathandize kuti zinthuzo zikhale bwino.
2. Kuphatikiza kwa AHP + MCA
Zochitika zomwe zingagwiritsidwe ntchito: Zofunikira za UL94 V-0, zomwe cholinga chake ndi kuchepetsa kuchuluka kwa zowonjezera ndi mgwirizano woletsa moto wa gasi.
Mankhwala ofunikira:
- Rabala yoyambira: VMQ (100 phr)
- Aluminium hypophosphite (AHP): 12–15 phr
- Amapereka phosphorous, amalimbikitsa kupangika kwa mabakiteriya.
- MCA: 8–10 ph
- Gwero la nayitrogeni limagwirizana ndi AHP (PN effect), kutulutsa mpweya wosagwira ntchito (monga NH₃) kuti lichepetse kufalikira kwa moto.
- Chodzaza cholimbitsa: Silika yofumira (10 phr)
- Zowonjezera: Cholumikizira cha Silane (1 phr, chimathandiza kufalikira) + chothandizira kuchiritsa
Makhalidwe:
- Mlingo wonse wa mankhwala oletsa moto: ~20–25 phr, wochepa kwambiri kuposa AHP yokha.
- MCA imachepetsa mlingo wa AHP koma ingakhudze pang'ono kuwonekera bwino (nano-MCA imalimbikitsidwa ngati kuwonekera bwino kukufunika).
3. Kuyerekeza kwa Ma Parameter Ofunika
| Kupanga | Kubwerera kwa Moto Koyembekezeredwa | Mlingo Wonse (phr) | Zabwino ndi Zoyipa |
|---|---|---|---|
| AHP yokha (maola 20) | UL94 V-1 | 20 | Zosavuta, mtengo wotsika; V-0 imafuna ≥30 phr, ndipo magwiridwe antchito ake amachepa. |
| AHP yokha (maola 30) | UL94 V-0 | 30 | Kuchedwa kwambiri kwa moto koma kuuma kwake kumawonjezeka komanso kutalikika pang'ono. |
| AHP 15 + MCA 10 | UL94 V-0 | 25 | Mphamvu yogwirizana, magwiridwe antchito oyenera—yolimbikitsidwa pamayeso oyamba. |
4. Malangizo Oyesera
- Kuyesa koyambirira kwa AHP + MCA (15+10 phr): Ngati V-0 yapezeka, chepetsani pang'onopang'ono AHP (monga, 12+10).
- Kutsimikizira kwa AHP kokha: Yambani pa 20 phr, onjezerani ndi 5 phr pa mayeso aliwonse kuti muwunikire LOI ndi UL94, ndikuyang'anira kusintha kwa katundu wa makina.
- Zofunikira pakuletsa utsi: Onjezani 3-5 phr zinc borate ku mankhwala omwe ali pamwambapa kuti muchepetse utsi popanda kuwononga kuchedwa kwa moto.
5. Ammonium Polyphosphate Yokutidwa ndi Ena
Tili ndi makasitomala ena omwe akugwiritsa ntchito bwino TF-201G popanga rabara ya silicon.
Kuti muwonjezere kukhathamiritsa, ganizirani kugwiritsa ntchito aluminium hydroxide pang'ono (10–15 phr) kuti muchepetse ndalama zonse, ngakhale izi zimawonjezera kuchuluka kwa zodzaza.
More inof., pls contact lucy@taifeng-fr.com
Nthawi yotumizira: Julayi-25-2025
