Ammonium Polyphosphate Flame Retardant Mechanism ndi mwayi

Ammonium Polyphosphate Flame Retardant Mechanism ndi Ubwino

Ammonium polyphosphate (APP) retardant flame akhoza m'gulu la mitundu itatu kutengera mlingo wake polymerization: otsika, sing'anga, ndi mkulu polymerization. Kukwera kwa digiri ya polymerization, kutsika kwamadzi kusungunuka, ndi mosemphanitsa. Mwamadongosolo, imatha kugawidwa mumitundu ya crystalline ndi amorphous, ndi crystalline APP kukhala mchere wautali wosasungunuka m'madzi. Fomula yodziwika bwino ya ma APP ndi (NH₄)ₙ₊₂PₙO₃ₙ₊₁. Pamene n imachokera ku 10 mpaka 20, imakhala yosungunuka m'madzi; pamene n iposa 20, imakhala yosasungunuka. APP ndi yopanda poizoni, yopanda fungo, yosawononga, ndipo imawonetsa kutsika kwa hygroscopicity, kukhazikika kwamafuta ambiri, komanso kuchita bwino kwambiri ngati choletsa moto wopanda halogen.

Flame Retardant Mechanism ya APP:
Ikatenthedwa, APP imawola ndikupanga poly-/metaphosphoric acid, yomwe imalimbikitsa kutaya madzi m'thupi ndi carbonization pamwamba pa zinthu zachilengedwe. Imakulitsa pakutentha, ndikupanga wosanjikiza woteteza womwe umalekanitsa zinthu ndi okosijeni, potero zimakwaniritsa kuchedwa kwa lawi. Kuphatikiza apo, kuwonongeka kwa matenthedwe a APP kumatulutsa mpweya wosayaka monga CO₂ ndi NH₃, womwe umachepetsa kuchuluka kwa okosijeni mumlengalenga, ndikuchepetsanso mpweya. Makhalidwewa amachititsa kuti utsi ukhale wochepa, osapanga mpweya wapoizoni, komanso zozimitsa zokha. Zochititsa chidwi, kusakhalapo kwa mpweya wapoizoni sikungowononga chilengedwe komanso kofunika kwambiri pa chitetezo cha moyo-ziwerengero zimasonyeza kuti anthu oposa 80% amafa pazochitika zazikulu zamoto amayamba chifukwa cha utsi wapoizoni wochokera ku mapulasitiki oyaka, zipangizo zamagetsi, ndi zipangizo zina, osati malawi okha.

Opanga APP Flame Retardant:
Taifeng Flame Retardant imagwiritsa ntchito ukadaulo wapamwamba kwambiri wapadziko lonse wamitundu ingapo kuti ipange APP ya digiri ya polymerization yokhala ndi phosphorous ndi nayitrogeni wambiri. Chogulitsacho chimakhala ndi kukhazikika kwamafuta, kusungunuka kwamadzi pang'ono, pH yosalowerera ndale, komanso kuchita bwino kwambiri koletsa moto. Ndi ufa woyera wonyezimira, wopanda hygroscopic, wosayaka, ndipo umasonyeza kulemera kwakukulu kwa maselo (n> 1200), kukhazikika, ndi kukana nyengo. Amagwiritsidwa ntchito kwambiri mu zokutira zotchinga ndi moto zochokera m'madzi, zokutira nsalu, komanso ngati gawo lofunikira pakupanga ma intumescent retardant thermoplastics. Chopangidwacho chimapangidwa ndi chithandizo chapamwamba kuti chigwirizane bwino, kulimbikira kukana chinyezi, pH ya alkaline, komanso kusungunuka kwamadzi pang'ono.

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