Ozone Kuchembera Kupikisa kwePTFE Yakakwirira-Tembiricha Mucheka

Jiangsu Aokai New Materials, inyanzvi mugadziri uye sosi fekitori yePTFE yakakwirira-tembiricha machira, inokupa iwe yakadzama sumo. Polytetrafluoroethylene (PTFE) yakavharwa fiberglass jira rinoratidza yakanakisa kemikari inertness uye kazhinji inopa yakanakisa ozone kuchembera kuramba. Zvisinei, haisi kudzivirirwa zvachose kune ozone erosion, uye kushanda kwayo kwese kunonyanya kukanganiswa ne ozone concentration, ambient tembiricha, nguva inoramba ichiratidzwa uye zvimwe zvinhu zvekunze.

Kutenda kune yakasarudzika mamorekuru chimiro, PTFE inoratidza yakasimba ozone kuramba pasi pemamiriro akajairwa. Iyo yakazara fluorinated carbon-fluorine (CF) bond inozvirumbidza yakanyanyisa high bond simba rinosvika 485 kJ/mol. Zvichakadaro, spiral molecular chimiro inoumba dense inodzivirira nhovo yemaatomu efluorine, ichidzivirira yakasimba oxidants senge ozone kurwisa yemukati kabhoni-kabhoni (CC) main molecular chain.

Zvakadaro, ozone inogona kushandura zvakanyanya maitiro epamusoro ePTFE uye kukonzeresa nhevedzano yemakemikari uye yemuviri shanduko. Zvidzidzo zvakaratidza kuti PTFE yakafumurwa kuozone ine friction coefficient yakapetwa katatu kupfuura iyo iri munzvimbo yakajairika yemhepo, inoperekedzwa nemapfekero ari pachena. Izvi zvinonyanya kukonzerwa ne ozone-induced surface oxidation, molecular bond breakage uye kupfava kwezvinhu.

Nekuratidzwa kwenguva refu kuozone, kunyanya pasi pemamiriro ekushanda akaomarara senge tembiricha yakakwira uye yakakwira ozone, PTFE yakakwirira-tembiricha jira richakura zvishoma nezvishoma kubva mukukuvadzwa kusingaonekwi kune macroscopic kutadza kushanda, nekutadza kwakananga kuratidzwa sezvinotevera:

Molecular chain breakage and degradation Ozone inotsemura CC molecular cheni dzePTFE uye inogadzira zvimedu zvidiki zvemamorekuru zvakaita secarbon tetrafluoride (CF₄) uye carbonyl fluoride (COF₂). Izvi zvinotungamira mukudzikiswa kwema molecular uremu uye yakakosha kuita kudzikiswa kwezvinhu.

Kutsemuka kwepamusoro uye kubvongodzwa Ndicho chinonyanya kunzwisisika kuchembera chiitiko. Izvo zvinhu zvinorasikirwa nekushanduka-shanduka uye zvinogadzira network-yakajeka mitswe pasi pekushushikana, iyo ozone kupaza. Iro jira rinova rakaomarara uye riine brittle, uye kuchembera kwakanyanya kunozokonzeresa pulverization uye kukuvadzwa kwechimiro.

Decline in mechanic properties Kudzikira kwezvinhu kunoramba kuchidzikisira kusimba kwesimba, kureba panguva yekuzorora, elasticity uye mamwe musimboti mechanicha zviratidzo. Kutevera kupetwa kwepasi, kupepeta uye kudzikisira ukobvu kunozowedzera kunetesa kupfeka kuramba uye kugadzikana kwechimiro.

Kushatisa kwenzvimbo yezvimiro Kemikari kukuvadzwa kwemaitiro anoshandura akakosha paramita senge simba repamusoro uye kona yekunyorova. Kutsemuka kweMicroscopic uye pores inoumbwa nekukukurwa kweozone ichawedzera muhukuru, ichideredza zvakanyanya kuiswa chisimbiso chepakutanga uye kuita kwega.

Kupokana kweozone kwePTFE high-temperature jira haisi kungotemerwa nehwaro zvinhu pachayo. Ambient tembiricha, zvakasanganiswa kuchembera mhedzisiro uye mamwe mamiriro ekunze anotambawo mabasa akasimba muhupenyu hwayo hwesevhisi.

Kupisa kwakanyanya kunomhanyisa zvakanyanya kuparara kweozone. Pasi pemamiriro ekupisa kwepamusoro, iyo oxidation yakasimba ye ozone inowedzera kuparara kwema molecular chain ye PTFE. Naizvozvo, tembiricha yenguva refu yebasa rezvigadzirwa zvePTFE inodonha zvakanyanya kubva pa260 ℃ mumhepo yakajairika kusvika 200 ℃–220 ℃ muozone uye yakasimba oxidizing gasi nharaunda.

Iko kune synergistic kuchembera mhedzisiro  pakati peozone uye ultraviolet mwaranzi. Mune zviitiko zvekunze, musanganiswa we UV mwaranzi uye ozone inoburitsa yakakurisa inoparadza mhedzisiro yakakura kwazvo kupfuura yechinhu chimwe chete.

Mukuwedzera, kunaka kwechigadzirwa kunosiyana nemugadziri. Misiyano mumagadzirirwo ekugadzira, kukoira kwekupfekedza uye dhizaini yekugadzira (yakadai sekuwedzera kweanorwisa-oxidant stabilizers) zvinotungamira kune akajeka mapundu mukureba ozone kuramba pakati peakasiyana PTFE epamusoro-tembiricha machira zvigadzirwa.

Nzira Dzinoshanda dzeKuvandudza Ozone Kuchembera Resistance

1. Wedzera yakakwirira-inoshanda antioxidants uye chiedza stabilizers kune PTFE fomula yekubata mahara radicals uye kunonoka oxidative kushatisa.

2. Adopt yakagadziridzwa pamusoro pekugadzirisa kurapa kuti iite densified yekudzivirira layer uye kusimudzira kuramba kukukurwa kwegasi oxidizing.

3. Gadzirisa mamiriro chaiwo ekushandisa: kudzora tembiricha yekushanda iri pasi pe200 ℃, uye dzivirira sevhisi yenguva refu munzvimbo dzine high-concentration ozone uye yakanyanya ultraviolet mwaranzi.

Summary

PTFE high-temperature jira rinoita zvakadzikama uye zvakanakisa pakamuri tembiricha uye yakaderera ozone concentration. Nekudaro, kushatisa kweoxidative, kuputika kwepasi, embrittlement uye kuderera kwekuita kwakazara kuchaitika mukupisa kwepamusoro-tembiricha, yakakwirira-ozone kana UV-yakabatana nharaunda dzakaomarara. Kudzora kwakadzikama kwezvakatipoteredza uye kugadziridzwa kwezvinhu kunogona kudzikamisa kuchembera uye kuwedzera zvakanyanya hupenyu hwesevhisi kwenguva refu yechigadzirwa.

Izvo zviri pamusoro pehunyanzvi zvemukati zvinopihwa neJiangsu Aokai New Materials Technology Co., Ltd.

Kana iwe uchida mamwe maitiro ehunyanzvi, zvigadziriso zvemashandisirwo uye masevhisi akajairwa ezvigadzirwa zvedu zvakazara, zvinosanganisira PTFE yakakwirira-tembiricha jira, PTFE yakakwirira-tembiricha inonamira tepi, PTFE mesh conveyor bhandi, isina musono bonding muchina bhandi, single-sided fluorine-yakavharwa jira, yakakwirira-tembiricha isingachinjiki kune girazi remhepo, ndapota inzwa wakasununguka kuonana negirazi.

·  Mr. Guo: +86 18944819998

·  Mr. Liu: +86 13705266308

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