Nei PTFE Yakakwira-Tembiricha Murazvo Murazvo-Usingaregi 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 pamoto wakavhurika, zvakanyanya nekuda kweiyo molecular chimiro uye kupisa kwekushisa kweiyo core material - polytetrafluoroethylene (PTFE). Kudzosa kwayo murazvo wemoto hakuvimbi nezvinodzoreredza moto senge zvinhu zvakajairika, asi kunobva mukusaziva kwayo kemikari inertness uye yakasarudzika maitiro ekuora.

Izvi zvinogona kunzwisiswa kubva pamatanho matatu:

1. Yakasimba Molecular 'Armour': 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  maatomu efluorine : Maatomu mahombe, akashongedzerwa zvisina kunaka efluorine akarongedzerwa, 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 pe tembiricha yakakwira, ma bond ane kabhoni-kabhoni (C–C) zvishoma shoma ari mukati mePTFE break before C–F bond. Cheni dzemamorekuru dzinotanga kuora oxygen isati yapinda mukuita.

Chigadzirwa chikuru  ndeye monomer : Pakutyoka, PTFE inonyanya kuita depolymerization , kuburitsa tetrafluoroethylene (C₂F₄) monomers kubva kumacheni kumagumo. 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 rinoderedza kuzara kweokisijeni uye rinowedzera kudzvinyirira kupisa.

3. Kutsigira Basa reGlass Fiber Substrate

PTFE high-temperature jira inoumbwa 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 inodzoreredza murazvo , kwete zvachose isingabatike.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 kumusoro kwayo tembiricha yekuora), 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 isingabatike 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-tembiricha tepi, PTFE yakakwirira-temperature mesh bhandi, seamless bhandi remashini ekubatanidza, jira rimwechete-sided PTFE, yakakwirira-tembiricha isingachinjiki bhandi rekutakura uye zvimwe zvine chekuita negirazi bhandi rekufambisa

●  Mr. Guo: 18944819998

●  Mr. Liu: 13705266308

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