Ko Phosphorus-Nitrogen Flame Retardants Inogona Kuwana V0 Rating muSilicone Rubber?
Kana vatengi vakabvunza nezve kushandisa chete aluminium hypophosphite (AHP) kana AHP + MCA musanganiswa wehalogen-isina murazvo retardancy musilicone rabha kuti uwane V0 rating, mhinduro ndihongu-asi dosage inodiwa zvichibva pane izvo zvinodikanwa zvekudzoreredza moto. Pazasi pane kurudziro yakasarudzika yezviitiko zvakasiyana:
1. Kushandisa Aluminium Hypophosphite (AHP) Yega
Mamiriro anoshanda: Kune UL94 V-1/V-2 zvinodiwa kana maapplication anonzwa kune nitrogen masosi (semuenzaniso, kudzivirira kubuda furo kubva kuMCA kunogona kukanganisa chitarisiko).
Magadzirirwo anokurudzirwa:
- Base rabha: Methyl vinyl silicone rubber (VMQ, 100 phr)
- Aluminium hypophosphite (AHP): 20–30 phr
- High phosphorus content (40%); 20 phr inopa ~ 8% phosphorus zvemukati zvekutanga murazvo retadancy.
- Kune UL94 V-0, wedzera kusvika makumi matatu phr (inogona kukanganisa michina zvivakwa).
- Reinforcing filler: Fumed silica (10–15 phr, inochengetedza simba)
- Zvinowedzera: Hydroxyl silicone mafuta (2 phr, inovandudza kugadzirisa) + kurapa mumiririri (peroxide kana platinamu system)
Hunhu:
- AHP chete inovimba neyakapfupikiswa-chikamu chekudzoreredza moto (char formation), zvakanyanya kunatsiridza iyo oxygen index (LOI) yesilicone rubha asi ine kushomeka kwehutsi.
- High dosage (> 25 phr) inogona kuwedzera kuoma kwezvinhu; kuwedzera 3-5 phr zinc borate inogona kuvandudza char layer mhando.
2. AHP + MCA Combination
Mamiriro anoshanda: UL94 V-0 zvinodiwa, ichivavarira yakaderera yekuwedzera dosi ine gasi-chikamu chemoto retardant synergy.
Magadzirirwo anokurudzirwa:
- Base rabha: VMQ (100 phr)
- Aluminium hypophosphite (AHP): 12-15 phr
- Inopa phosphorus sosi, inosimudzira char kuumbwa.
- MCA: 8–10 pr
- Nitrogen sosi inopindirana neAHP (PN mhedzisiro), ichiburitsa inert magasi (semuenzaniso, NH₃) kudzvanya kupararira kwemoto.
- Inosimbisa filler: Fumed silica (10 phr)
- Zviwedzere: Silane coupling agent (1 phr, inovandudza kupararira) + kurapa mumiririri
Hunhu:
- Total flame retardant dosage: ~20–25 phr, yakaderera zvakanyanya pane AHP chete.
- MCA inoderedza AHP dosage asi inogona kukanganisa zvishoma kujeka (nano-MCA inokurudzirwa kana kujeka kuchidikanwa).
3. Key Parameter Kuenzanisa
| Kugadzira | Zvinotarisirwa Kunonoka Kwemoto | Total Dosage (phr) | Zvakanakira & Zvazvakaipira |
|---|---|---|---|
| AHP chete (20 phr) | UL94 V-1 | 20 | Zviri nyore, mutengo wakaderera; V-0 inoda ≥30 phr, nekuderera kwekuita. |
| AHP chete (30 phr) | UL94 V-0 | 30 | High flame retadancy asi yakawedzera kuomarara uye kuderera kureba. |
| AHP 15 + MCA 10 | UL94 V-0 | 25 | Synergistic mhedzisiro, kuita kwakaringana-inokurudzirwa kumiyedzo yekutanga. |
4. Mazano ekuedzwa
- Yekutanga bvunzo yeAHP + MCA (15+10 phr): Kana V-0 yawanikwa, zvishoma nezvishoma kuderedza AHP (semuenzaniso, 12+10).
- Kuongororwa kweAHP chete: Tanga pamakumi maviri phr, wedzera ne5 phr pabvunzo kuti uongorore LOI uye UL94, kutarisa shanduko yemidziyo.
- Zvinoda kudzvanyirira utsi: Wedzera 3–5 phr zinc borate kune zviri pamusoro apa kuti udzikise hutsi pasina kukanganisa kunonoka kwemoto.
5. Vamwe Coated Ammonium Polyphosphate
Tine vamwe vatengi vakabudirira kushandisa TF-201G yesilicon rabha.
Kuti uwedzere kukwenenzvera, funga kubatanidza zvidiki zvealuminium hydroxide (10-15 phr) kudzikisa mutengo wese, asi izvi zvinowedzera huwandu hwese hwekuzadza.
More inof., pls contact lucy@taifeng-fr.com
Nguva yekutumira: Jul-25-2025
