PBT Halogen-Free Flame Retardant Reference Formulation
Kuti mukwaniritse bwino kupanga kwa PBT zopanda halogen zobwezeretsanso malawi, ndikofunikira kuti muzitha kuyendetsa bwino moto, kukhazikika kwamafuta, kutengera kutentha, komanso makina. Pansipa pali njira yabwino yophatikizira yokhala ndi kusanthula kwakukulu:
1. Zosakaniza Zowonongeka Kwambiri za Flame
Njira 1: Aluminium Hypophosphite + MCA (Melamine Cyanurate) + Zinc Borate
Njira:
- Aluminium Hypophosphite (Kukhazikika kwa kutentha> 300 ° C): Imalimbikitsa mapangidwe a char mu gawo lofupikitsidwa ndi kutulutsa PO· radicals mu gawo la mpweya kuti asokoneze kuyaka kwa tcheni.
- MCA (Kuwola pa ~ 300 ° C): Kuwola kwa Endothermic kumatulutsa mpweya wa inert (NH₃, H₂O), kusungunula mpweya woyaka komanso kupondereza kusungunuka kwamadzi.
- Zinc Borate (Kuwola> 300°C): Imawonjezera kupangika kwa magalasi, imachepetsa utsi ndi kuwala.
Chiyerekezo Chovomerezeka:
- Aluminiyamu Hypophosphite (10-15%) + MCA (5-8%) + Zinc Borate (3-5%).
Njira 2: Magnesium Hydroxide Yosinthidwa Pamwamba + Aluminium Hypophosphite + Organic Phosphinate (mwachitsanzo, ADP)
Njira:
- Magnesium Hydroxide Yosinthidwa (Kuwonongeka ~ 300 ° C): Chithandizo chapamwamba (silane / titanate) chimapangitsa kufalikira ndi kukhazikika kwa kutentha; kuzirala kwa endothermic kumachepetsa kutentha kwa zinthu.
- Organic Phosphinate (monga ADP, kukhazikika kwa kutentha> 300 ° C): Imagwira bwino kwambiri pagawo lagasi lawilo lamoto, yolumikizana ndi makina a phosphorous-nitrogen.
Chiyerekezo Chovomerezeka:
- Magnesium Hydroxide (15-20%) + Aluminiyamu Hypophosphite (8-12%) + ADP (5-8%).
2. Optional Synergists
- Nano-clay/Talc (2-3%): Imakweza mtundu wa char ndi mawonekedwe amakina pomwe imachepetsa kutsitsa koletsa moto.
- PTFE (0.2-0.5%): Anti-dripping agent kuti apewe kuyaka m'malovu.
- Silicone Powder (2-4%): Imalimbikitsa kupangika kwamoto wandiweyani, kumawonjezera kuchedwa kwa malawi ndi gloss pamwamba.
3. Zophatikiza Zoyenera Kupewa
- Aluminiyamu Hydroxide: Imawonongeka pa 180-200 ° C (pansi pa PBT processing kutentha kwa 220-250 ° C), zomwe zimayambitsa kuwonongeka msanga.
- Magnesium Hydroxide Yosasinthika: Imafunikira chithandizo chapamwamba kuti chiteteze kuphatikizika ndi kuwonongeka kwamafuta pakukonza.
4. Maupangiri Othandizira Kuchita
- Chithandizo cha Pamwamba: Gwiritsani ntchito ma silane coupling agents pa Mg(OH)₂ ndi zinc borate kuti mupititse patsogolo kubalalikana ndi kulumikizana pakati pa nkhope.
- Kuwongolera Kutentha: Onetsetsani kuti kutentha kwamoto sikuwola> 250 ° C kuti mupewe kuwonongeka.
- Mechanical Property Balance: Lipirani kutaya mphamvu pogwiritsa ntchito nano-fillers (mwachitsanzo, SiO₂) kapena zolimbitsa thupi (mwachitsanzo, POE-g-MAH).
5. Chitsanzo Mapangidwe
| Flame Retardant | Kutsegula (wt%) | Ntchito |
|---|---|---|
| Aluminium Hypophosphite | 12% | Choyimitsa moto chachikulu (chokhazikika + gawo la gasi) |
| MCA | 6% | Gasi-gawo lamoto retardant, utsi kupondereza |
| Zinc Borate | 4% | Synergistic char kupanga, kuchepetsa utsi |
| Nano Talc | 3% | Kulimbitsa mphamvu, kukulitsa makina |
| PTFE | 0.3% | Anti-dripping |
6. Mayeso Ofunika Kwambiri
- Kuchedwa kwa Lawi lamoto: UL94 V-0 (1.6mm), LOI> 35%.
- Kukhazikika kwamafuta: zotsalira za TGA> 25% (600°C).
- Katundu Wamakina: Kulimba kwamphamvu> 45 MPa, osawoneka> 4 kJ/m².
Mwa kukonza bwino ma ratios, kutha kwamoto kwamphamvu kwa halogen wopanda lawi kumatha kukwaniritsidwa ndikusunga magwiridwe antchito onse a PBT.
More info., pls send email to lucy@taifeng-fr.com
Nthawi yotumiza: Jul-08-2025
