Flame-Retardant Formulation Design Kurudziro yeHalogen-Yemahara Yakakwira-Impact Polystyrene (HIPS)
Mutengi Zvinodiwa: Flame-retardant HIPS yemagetsi emidziyo yemagetsi, simba rekuita ≥7 kJ/m², melt flow index (MFI) ≈6 g/10min, jekiseni molding.
1. Phosphorus-Nitrogen Synergistic Flame-Retardant System
HIPS Flame-Retardant Formulation (Table 1)
| Chikamu | Kurodha (phr) | Mashoko |
| HUPS resin | 100 | Base material |
| Ammonium polyphosphate (APP) | 15-20 | Phosphorus source |
| Melamine cyanrate (MCA) | 5-10 | Nitrogen sosi, inopindirana neAPP |
| Yakawedzerwa graphite (EG) | 3-5 | Inosimudzira kuumbwa kwechar |
| Anti-dripping agent (PTFE) | 0.3-0.5 | Inodzivirira madonhwe akanyunguduka |
| Compatibilizer (semuenzaniso, MAH-yakabatanidzwa HIP) | 2-3 | Inovandudza kupararira |
Features:
- AchievesUL94 V-0kuburikidza ne intumescent char kugadzirwa kubva APP/MCA synergy.
- Halogen-isina uye eco-inoshamwaridzika, asi inogona kuderedza michina zvivakwa; optimization inodiwa.
2. Metal Hydroxide Flame-Retardant System
Magadzirirwo eHIPS (Table 2)
| Chikamu | Kurodha (phr) | Mashoko |
| HUPS resin | 100 | - |
| Aluminium hydroxide (ATH) | 40-60 | Primary flame retardant |
| Magnesium hydroxide (MH) | 10-20 | Inopindirana neATH |
| Silane coupling agent (semuenzaniso, KH-550) | 1-2 | Inovandudza filler dispersion |
| Toughener (semuenzaniso, SEBS) | 5-8 | Inotsiva kurasikirwa kwesimba |
Features:
- Zvinoda>50% kurodhayeUL94 V-0, asi inokanganisa simba uye kuyerera.
- Inokodzera kuputa-yakaderera/yakaderera-chepfu maapplications (semuenzaniso, njanji yekufambisa).
3. Phosphorus-Nitrogen Synergistic System (Aluminium Hypophosphite + MCA)
Yakagadziridzwa HIPS Magadzirirwo
| Chikamu | Kurodha (phr) | Basa/Zvinyorwa |
| HIPS (yakakwirira-impact giredhi, semuenzaniso, PS-777) | 100 | Base zvinhu (impact ≥5 kJ/m²) |
| Aluminium hypophosphite (AHP) | 12-15 | Phosphorus source, thermal kugadzikana |
| Melamine cyanrate (MCA) | 6-8 | Nitrogen source, inopindirana neAHP |
| SEBS/SBS | 8-10 | Yakakosha toughener yekukanganisa ≥7 kJ/m² |
| Liquid parafini/epoxidized soya bean mafuta | 1-2 | Lubricant, inovandudza kuyerera/kupararira |
| PTFE | 0.3-0.5 | Anti-dripping agent |
| Antioxidant 1010 | 0.2 | Inodzivirira kuderedzwa |
Mafungiro Akakosha Dhizaini:
- Resin Selection:
- Shandisa akakwira-impact HIPS mamakisi (semuenzaniso,Chimei PH-888,Nyika PG-33) ine inherent impact simba re5–6 kJ/m². SEBS inowedzera kuwedzera kuoma.
- Flowability Control:
- AHP/MCA kuderedza MFI; kutsiva nemafuta (semuenzaniso, parafini yemvura) kana plasticizers (semuenzaniso, epoxidized soya mafuta).
- Kana MFI ikaramba yakaderera, wedzera2–3 phr TPUkuvandudza kuyerera uye kuoma.
- Flame Retardancy Validation:
- AHP inogona kuderedzwa kusvika12 prkana yakabatanidzwa2–3 phr EGkuchengetedza UL94 V-0.
- ForUL94 V-2, kuderedza kurodha kwemoto kudzoreredza kuisa pamberi pekuita / kuyerera.
- Jekiseni Molding Parameters:
- Tembiricha:180–220°C(kudzivisa kusvibiswa kweAHP/HIPS).
- Kumhanya kwejekiseni:Pakati-pamusorokudzivirira kuzadza kusina kukwana.
Zvinotarisirwa Kuita:
| Property | Chinangwa Kukosha | Test Standard |
| Impact simba | ≥7 kJ/m² | ISO 179/1eA |
| MFI (200°C/5 kg) | 5–7 g/10 min | ASTM D1238 |
| Flame retadancy | UL94 V-0 (1.6 mm) | UL94 |
| Kusimba simba | ≥25 MPa | ISO 527 |
4. Alternative Solutions
- Mari-Sensitive Option: Tsiva AHP zvishoma nemicroencapsulated red phosphorus (3–5 phr), asi cherechedza kuganhurwa kwemavara (tsvuku-tsvuku).
- Validation: Ita zviedzo zvidiki-diki kuti uenzanise kukanganisa vs. flame retardancy usati wagadzirisa kuyerera.
More info. , pls contact lucy@taifeng-fr.com
Nguva yekutumira: Aug-15-2025
