Mfundo yofunika
M'zaka zaposachedwa, pakhala kudera nkhawa za kuopsa kwa chilengedwe ndi thanzi lomwe limabwera chifukwa cha ma halogen-based flame retardants omwe amagwiritsidwa ntchito m'mapulasitiki. Zotsatira zake, zoletsa moto zosakhala za halogen zatchuka chifukwa cha mawonekedwe awo otetezeka komanso okhazikika.
Zoletsa moto zopanda halogen zimagwira ntchito posokoneza kuyaka komwe kumachitika mapulasitiki akayaka moto.
1.Amakwaniritsa izi mwa kusokoneza thupi ndi mankhwala ndi mpweya woyaka womwe umatulutsidwa panthawi yoyaka. Imodzi mwa njira zodziwika bwino ndi kupanga kaboni woteteza pamwamba pa pulasitiki.
2. Zikatenthedwa ndi kutentha, zoletsa moto za halogen zimakumana ndi ma chemical reaction, omwe amatulutsa madzi kapena mpweya wina wosayaka. Mipweya imeneyi imapanga chotchinga pakati pa pulasitiki ndi lawi lamoto, motero kumachepetsa kufalikira kwa moto.
3. Zowonongeka zamoto zopanda halogen zimawola ndi kupanga wosanjikiza wokhazikika wa carbonized, wotchedwa char, womwe umakhala ngati chotchinga chakuthupi, kulepheretsa kutulutsidwa kwina kwa mpweya woyaka.
4. Kuphatikiza apo, zowotchera malawi opanda halogen zimatha kutsitsa mpweya woyaka ndi ionizing ndikugwira ma free radicals ndi zida zoyaka moto. Kuchita uku kumaphwanya mphamvu ya kuyaka, ndikuchepetsanso mphamvu yamoto.
Ammonium polyphosphate ndi phosphorous-nayitrogeni-halogen-free flame retardant. Ili ndi magwiridwe antchito oyaka moto m'mapulasitiki okhala ndi zinthu zopanda poizoni komanso zachilengedwe.
Plastics Application
Flame retardant mapulasitiki ngati FR PP, FR PE, FR PA, FR PET, FR PBT ndi zina zotero amagwiritsidwa ntchito mu makampani magalimoto kwa mkati galimoto, monga dashboards, mapanelo zitseko, zigawo mipando, mpanda magetsi, trays chingwe, kukana moto mapanelo magetsi, switchgears, mpanda magetsi madzi, mapaipi gasi, ndi zoyendera.
Flame retardant standard (UL94)
UL 94 ndi mulingo woyaka moto wa pulasitiki wotulutsidwa ndi Underwriters Laboratories (USA). Muyezo umayika mapulasitiki molingana ndi momwe amawotchera mosiyanasiyana komanso makulidwe ake kuchokera kumafuta otsika kwambiri oletsa moto mpaka ambiri osayaka moto m'magulu asanu ndi limodzi.
| Mtengo wa UL94 | Tanthauzo la Mulingo |
| V-2 | Kuwotcha kumayima mkati mwa masekondi 30 pagawo lomwe limalola madontho a pulasitiki oyaka. |
| V-1 | Kuwotcha kumayima mkati mwa masekondi 30 pagawo loyima kulola madontho apulasitiki osapsa. |
| V-0 | Kuyaka kumayima mkati mwa masekondi 10 pagawo loyima ndikulola madontho apulasitiki osapsa. |
Mapangidwe Otchulidwa
| Zakuthupi | Fomu S1 | Fomu S2 |
| Homopolymerization PP (H110MA) | 77.3% | |
| Copolymerization PP (EP300M) | 77.3% | |
| Mafuta (EBS) | 0.2% | 0.2% |
| Antioxidant (B215) | 0.3% | 0.3% |
| Anti-dripping (FA500H) | 0.2% | 0.2% |
| Mtengo wa TF-241 | 22-24% | 23-25% |
| Katundu wamakina kutengera 30% kuwonjezera voliyumu ya TF-241.With 30% TF-241 kufikira UL94 V-0(1.5mm) | ||
| Kanthu | Fomu S1 | Fomu S2 |
| Kutentha kwamphamvu kwamphamvu | V0 (1.5mm | UL94 V-0 (1.5mm) |
| Chepetsani index ya okosijeni (%) | 30 | 28 |
| Mphamvu yamagetsi (MPa) | 28 | 23 |
| Elongation panthawi yopuma (%) | 53 | 102 |
| Kuwotcha mlingo pambuyo madzi owiritsa (70 ℃, 48h) | V0 (3.2mm) | V0 (3.2mm) |
| V0 (1.5mm) | V0 (1.5mm) | |
| Flexural modulus (MPa) | 2315 | 1981 |
| Meltindex(230 ℃,2.16KG) | 6.5 | 3.2 |
