Ammonium Polyphosphate Flame Retardant Mechanism uye Benefit
Ammonium polyphosphate (APP) flame retardant inogona kuiswa mumhando nhatu zvichienderana nehuwandu hwayo hwepolymerization: polymerization yakaderera, yepakati, uye yakakwira. Kana polymerization yakakwira, kunyungudika kwemvura kunoderedza, uye zvinopesana. Pachitarisiko, inogona kukamurwa kuita crystalline uye amorphous form, ne crystalline APP iri munyu usinganyungudike wemvura kwenguva refu. Fomura yakajairika yeAPP ndeye (NH₄)ₙ₊₂PₙO₃ₙ₊₁. Kana n iri pakati pe10 kusvika 20, inonyungudika mumvura; kana n yadarika 20, hainyungudike. APP haina chepfu, haina hwema, haiparadzi, uye inoratidza hygroscopicity yakaderera, kugadzikana kwakanyanya kwekupisa, uye kushanda kwakanaka se halogen-free fire retardant.
Maitiro eAPP Anodzora Murazvo:
Kana yapiswa, APP inoora kuita poly-/metaphosphoric acid, iyo inokurudzira kupera mvura mumuviri uye carbonization pamusoro pezvinhu zvakasikwa. Inokura painodziya, ichigadzira jira rinodzivirira rinoparadzanisa zvinhu kubva kuokisijeni, nokudaro zvichiita kuti moto udzoke. Pamusoro pezvo, kuora kwekupisa kweAPP kunoburitsa magasi asingabatike akadai seCO₂ neNH₃, ayo anoderedza huwandu hweokisijeni mumhepo, zvichideredza kugoverwa kweokisijeni. Hunhu uhwu hunokonzera kuburitsa utsi hushoma, kusagadzira gasi rine chepfu, uye hunhu hwekudzima hwega. Zvakakosha kuti kusavapo kwemagasi ane chepfu hakusi kungochengetedza nharaunda chete asiwo kwakakosha pakuchengetedza hupenyu—nhamba dzinoratidza kuti vanopfuura 80% yevakafa muzviitiko zvikuru zvemoto vanokonzerwa nehutsi hune chepfu hunobva mumapurasitiki anotsva, zvikamu zvemagetsi, nezvimwe zvinhu, pane moto pachawo.
Mugadziri weAPP Flame Retardant:
Taifeng Flame Retardant inoshandisa tekinoroji yepamusoro-soro yepasi rose yekugadzira APP ine phosphorus yakawanda nenitrogen. Chigadzirwa ichi chine kugadzikana kwakanaka kwekupisa, kunyunguduka kwemvura kushoma, pH inenge isina kusimba, uye kushanda zvakanaka kwemurazvo. Ihupfu hwakachena hwakasimba, hahuna hygroscopic, hahubati, uye hune huremu hwakawanda hwemamorekuru (n > 1200), kugadzikana, uye kuramba mamiriro ekunze. Inoshandiswa zvakanyanya muzvipfeko zvisingatsvi nemvura, zvipfeko zvemachira, uye sechinhu chakakosha mu thermoplastics inodzivirira moto. Chigadzirwa ichi chinogadziriswa chinorapwa pamusoro kuti chienderane zviri nani, chinodzivirira hunyoro zvakanyanya, pH yealkaline, uye kunyange kunyunguduka kwakaderera kwemvura.
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Nguva yekutumira: Nyamavhuvhu-19-2025
