Sei PTFE Yakakwira-Tembiricha Mucheka Ichiita Yakaoma uye Yakaoma Mushure meKushandiswa Kwenguva Yakareba Pakupisa Kwepamusoro?

Jiangsu Aokai New Materials, mugadziri wePTFE high-temperature machira, anotsanangura kuomarara uye embrittlement yePTFE yepamusoro-tembiricha jira mushure menguva refu-yepamusoro-tembiricha sevhisi kubva pamaonero matatu: polymer cheni kuzorora, kuchinjika-kubatanidza, uye kuora . Izvo zvinofanirwa kucherechedzwa kuti iyo core material yePTFE high-temperature cloth is polytetrafluoroethylene (PTFE), uye kuongorora kunotevera kunotarisa pane microstructural shanduko yePTFE high-temperature jira.

I. Molecular Chain Relaxation (Kuchembera Kwenyama)

Pakupisa kwepamusoro, kufamba kwemaketani emaketani munzvimbo dzeamorphous dzePTFE high-temperature jira rinowedzera, uye zvishoma nezvishoma vanoshandura kuva crystalline state yakarongeka, zvichiita kuti iwedzere kupenya. Iyi chain relaxation process inoderedza kufamba kwema molecular segments muPTFE high-temperature cloth, iyo macroscopically inoratidzira sechinhu chinoshanduka kubva pakushanduka kuenda kune yakaoma uye brittle.

II. Cross-Linking Reaction

Kana PTFE yakakwirira-tembiricha jira akaiswa pamusoro tembiricha kwenguva yakareba (kunyanya pedyo kana kupfuura yokumusoro sevhisi muganhu), pamberi trace okisijeni kana nemwaranzi, PTFE mamorekuru anorasikirwa fluorine maatomu kuti vaumbe vakasununguka radicals, izvo zvino kunokonzera intermolecular cross-linking. Iyo muchinjiko-yakabatana network inorambidza zvakananga kutsvedza kwehama cheni dzemamorekuru muPTFE jira rinopisa repamusoro, zvichiita kuti irasikirwe nekushanduka. Ichi ndicho chimwe chezvikonzero zvakakosha zvemakemikari zvikonzero zvekuomesera uye embrittlement yePTFE high-temperature jira.

III. Degradation Reaction

Pakupisa kwepamusoro kana muhupo hweokisijeni, maketani makuru ePTFE high-temperature cloth break and degrade, kubudisa low-molecular-weight fragments uye kusunungura magasi efluoride. Kunyange zvazvo zvinhu zvingapfava pakutanga, kuderera kunoramba kuchiita kunokonzera kudonha kwakapinza kwehuremu hwema molecular uye kukuvadza kune yekutanga crystalline chimiro. Pakupedzisira, pamusoro PTFE yepamusoro-tembiricha jira hupfu, makatsemuka, uye anoratidza isingachinjiki embrittlement.

Summary : Kana PTFE high-temperature jira inopisa kwenguva yakareba, kusununguka kweketani (crystallization) uye kuyambuka-kubatanidza pamwe chete kunokonzera kuoma uye kurasikirwa kwekuoma; pasi pemamiriro ezvinhu akaoma, kuderera kunowedzera kuparadza kutendeseka kwechimiro. Iko kusanganiswa kwezvinhu zvitatu izvi pakupedzisira kunoita kuti PTFE yakakwirira-tembiricha jira rakaoma uye brittle.

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

Kana iwe uchida kudzidza zvakawanda nezve yakadzama paramita, mamiriro ekushandisa uye yakagadziridzwa mhinduro kune yedu yakazara chigadzirwa renji, kusanganisira PTFE yakakwirira-tembiricha jira, PTFE yakakwirira-temperature tepi, PTFE yakakwirira-temperature mesh bhandi, seamless mabhandi emichina yekubatanidza, jira rimwechete-sided PTFE, high-temperature-temperature resistant ndapota taura nesu kuburikidza nematanho anotevera:

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