The monomer of PTFE ndiye tetrafluoroethylene (TFE), uye kuvira kwayo poindi -76.3 madhigirii Celsius.Inoputika zvakanyanya pamberi peokisijeni uye inogona kufananidzwa nepfuti.Naizvozvo, kugadzirwa kwayo, kuchengetedza uye kushandiswa muindasitiri kunoda kuchengetedzwa kwakasimba, izvo zvinobuda zvinodawo kudzorwa, iyo zvakare imwe yenzvimbo huru dzePTFE mutengo.TFE inowanzo shandisa mahara radical kuturika polymerization muindasitiri, uchishandisa persulfate senge initiator, kuita tembiricha inogona kuva pakati pe10-110 madhigirii Celsius, nzira iyi inogona kuwana yakakwira zvakanyanya molecular uremu PTFE (kunyangwe inogona kupfuura miriyoni gumi), hapana chinooneka cheni. kutamisa kunoitika.
Sezvo nzvimbo yekunyunguduka yePTFE yakakwira zvakanyanya, iri padyo netembiricha yekuora, uye mamorekuru ayo asiri madiki, hazvigoneke kuti uwane iyo yakanyunguduka yekuyerera mwero nekungovimba nekudziya seyakajairwa thermoplastic polymers.Tepi yeTeflon kana Teflon chubhu inogadzirwa sei?Panyaya yekuumbwa, PTFE poda inowanzodururwa muforoma, uye yobva yapisa uye inomanikidzwa kuti iite poda.Kana extrusion ichidiwa, hydrocarbon makomisheni inoda kuwedzerwa kuPTFE kubatsira kubvongodza nekuyerera.Huwandu hweiyi hydrocarbon makomisheni hunofanirwa kudzorwa mukati meimwe siyana, zvikasadaro zviri nyore kukonzera yakawandisa extrusion pressure kana kupera kwechigadzirwa kuremara.Mushure mefomu yaidiwa, mishonga ye hydrocarbon inobviswa nekupisa zvishoma nezvishoma, uye zvino inopisa uye yakasvibiswa kuti iite chigadzirwa chekupedzisira.
Kushandiswa kwePTFE
Imwe yemashandisirwo makuru ePTFE ndeyekupfeka.Kubva pane diki isina-tsvimbo pani kumba kusvika kumadziro ekunze kwecube yemvura, unogona kunzwa mashiripiti ekubata uku.Zvimwe zvinoshandiswa kuvhara tepi, tambo yekunze kudzivirira, mbiya yemukati, zvikamu zvemuchina, labware, nezvimwewo. Kana iwe uchida chinhu chinoshandiswa mumamiriro ezvinhu akaoma, zvino funga nezvazvo, zvinogona kuva nemigumisiro isingatarisirwi.
Nguva yekutumira: Aug-29-2022