Nei PTFE Yakakwira-Tembiricha Murazvo Murazvo-Isingaregi muMoto Wakavhurika? Chii chinonzi Microscopic Flame-Retardant Mechanism?

Jiangsu Aokai New Materials, mugadziri anotungamira wePTFE high-temperature machira, anotsanangura:

PTFE high-temperature jira rinodzivirira zvakanyanya murazvo mumoto wakavhurika, zvakanyanya nekuda kweiyo molecular chimiro uye kupisa kwekuora kweiyo core material - polytetrafluoroethylene (PTFE). Kudzosa kwayo murazvo wemoto hakuvimbi nezvinodzoreredza moto senge zvinhu zvakajairika, asi zvinobva mukusagadzikana kwayo kwekemikari inertness uye yakasarudzika maitiro ekuora.

Izvi zvinogona kunzwisiswa kubva pamatanho matatu:

1. Yakasimba Molecular 'Zvombo': High Bond Energy uye Dziviriro Layer

·  Yakasimba kabhoni-fluorine (C-F) mabhondi : PTFE mamorekuru ane kabhoni cheni musana wakakomberedzwa nemaatomu efluorine. Iyo C-F bond ndeimwe yeakasimba anozivikanwa makemikari bond, ane bond simba rinosvika 485 kJ/mol. Kunyanya simba guru (tembiricha) rinodiwa kuti riputse, richigadzira mutsara wekutanga wekudzivirira.

Kudzivirira  maitiro emaatomu efluorine : Maatomu makuru, asina chajiwa efluorine akaturikidzana, achiita sechidzitiro chakakora chinovhara zvizere cheni yemukati kabhoni. Ichi chipingamupinyi chinodzivirira makemikari mazhinji (kusanganisira okisijeni) kubva pakuwana kabhoni cheni uye anodzivirira zvakanyanya maitiro eoxidation anodiwa pakupisa.

2. Non-Combustible Decomposition: Depolymerization Pane Kupisa

·  Chain scission before oxidation : Pasi petembiricha yakakwira, ma bond ane kabhoni-kabhoni (C–C) ari mashoma ari mukati mePTFE break before C–F bond. Cheni dzemamorekuru dzinotanga kuora okisijeni isati yapinda mukuita.

·  Chigadzirwa chikuru ndeye monomer : Pakutyoka, PTFE inonyanya kuita depolymerization , ichiburitsa tetrafluoroethylene (C₂F₄) monomers kubva kumacheni anogumira. Izvo zvinhu zvinonyunguduka pane kupinda mumoto wechisimba unoburitsa huwandu hukuru hwekupisa uye magasi anopfuta.

Gas  -phase barriers effect : C₂F₄ gasi rinobva ku depolymerization rakanyanya kudarika mhepo uye rinogara pedyo nepamusoro, richigadzira gasi renguva pfupi rinoita kuti oxygen iwedzere uye inowedzera kudzvinyirira kupisa.

3. Kutsigira Basa reGlass Fiber Substrate

PTFE high-temperature jira chinhu chinoumbwa nekuisa PTFE pagirazi fiber jira. Girazi faibha pachayo chinhu chisingabatike inorganic material. Sezvo skeleton yakarongeka, inova nechokwadi chokuti kunyange kana nzvimbo yePTFE yepasi yakapedzwa zvakakwana pasi pekupisa kwakanyanya, zvinhu hazvinyunguduki kana kudonha sepurasitiki yakachena, kuchengetedza kuvimbika kwemaitiro uye kudzivirira kupararira kwemoto.

Zvinofanira kusimbiswa kuti PTFE inodzora murazvo , kwete zvachose isingabatiki moto.Kana ichipisa pamusoro penzvimbo yayo yekunyungudika (327°C) uye ichienderera, inoora uye inobudisa utsi hunokachidza. Inowanzoshingirira tembiricha yenguva refu kusvika 260°C uye inoramba yakagadzikana kwekanguva pa300–360°C.

Kuora mumoto wakavhurika : Kana yakanyatso kuvhurika moto wakavhurika (kure pamusoro pekuora kwayo tembiricha), iyo PTFE layer inoora, asi iyo nzira haiburitse kupisa kwakakwana kana zvinopisa kuti zvirambe zvichibvira. Yakasanganiswa negirazi fiber tsigiro, murazvo haugone kupararira uchienderera.

Muchidimbu, PTFE high-temperature jira rinopisa moto nokuti core material PTFE is molecularly made to resist combustion .High-energy chemical bonds, unique decomposition pathways, uye isingabatiki girazi fiber skeleton pamwe chete inoumba chivharo chakasimba chemoto.

Ruzivo rwuri pamusoro rwunopihwa neJiangsu Aokai New Materials Technology Co., Ltd.

Kuti uwane ruzivo rwakadzama, mamiriro ekushandisa uye zvigadziriso zvakagadziriswa zvechigadzirwa chedu chizere - zvinosanganisira PTFE yakakwirira-tembiricha tepi, PTFE yakakwirira-temperature tepi, PTFE yakakwirira-temperature mesh bhandi, seamless bhandi remashini ekubatanidza, rimwe-sided PTFE jira, yakakwirira-tembiricha inodzivirira tembiricha inotenderedza bhandi uye zvimwe zvine chekuita negirazi bhandi rekufambisa

●  Mr. Guo: 18944819998

●  Mr. Liu: 13705266308

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