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Ammonium polyphosphate (APP) mune intumescent sealants

Mukuwedzera sealant maumbirwo, ammonium polyphosphate (APP) inoita basa rakakosha mukusimudzira kuramba moto.
APP inowanzoshandiswa semurazvo wemoto mukuwedzera sealant maumbirwo.Kana ichiiswa kune tembiricha yakanyanya panguva yemoto, APP inosangana neyakaoma makemikari shanduko.Kupisa kunokonzeresa kuburitswa kwephosphoric acid, iyo inopindirana nemahara radicals anogadzirwa nekupisa maitiro.Izvi zvinokonzerwa nemakemikari zvinokurudzira kuumbwa kwedense char layer.Iyi char layer inoshanda sechivhariso chinodzivirira, ichinyatso kudzikisira kutamiswa kwekupisa neokisijeni kune izvo zviri pasi, zvichitadzisa kupararira kwemirazvo.
Pamusoro pezvo, APP inoshanda senge intumescent flami retardant mukuwedzera sealant maumbirwo.Kana yaiswa pamoto, iyo intumescent additives, kusanganisira APP, inopinda maitiro ekuzvimba, kupisa, uye kugadzira inodzivirira insulating layer.Iyi nhanho inobatsira kuderedza kupisa kwekushisa uye kusunungurwa kwemagasi asingabatiki, nokudaro zvinobudirira kunonoka kupararira kwemoto.
Uyezve, kuvapo kweAPP mukuwedzera zvisimbiso kunowedzera kumira kwavo kwemoto uye kunosangana nemiyero yekudzivirira moto.Iyo char yakaumbwa nekuda kweiyo APP maitiro inonyatso kuvharira zvinhu zviri pasi, ichipa imwe nguva yekupindura nekukurumidzira uye kubuda kana moto wabvira.
Mukupedzisa, mukuwedzera sealant formulations, kuiswa kweammonium polyphosphate kunowedzera kupikisa moto kuburikidza nekusimudzira kuumbwa kwechar layer yekudzivirira, kuderedza kupisa uye kutamisa oksijeni, uye kupa chipingamupinyi chinoshanda pakupararira kwemoto.Izvi zvinobatsira kukuchengetedzwa kwemoto kwese uye kuita kwekuwedzera zvigadzirwa zvechisimbiso mumashandisirwo akasiyana siyana.


Nguva yekutumira: Zvita-22-2023