PTFE's mechanical properties ishoma kana ichienzaniswa nemamwe mapurasitiki, uye inogona kushandiswa pamusoro petembiricha yakawanda ye -100°F kusvika +400°F (-73°C kusvika 204°C).)Iyo ine yakanakisa kupisa uye magetsi ekudzivirira zvivakwa uye yakaderera coefficient yekukwesha.PTFE yakaoma kwazvo uye haigone kugadziriswa nekunyunguduka.PTFE inofanirwa kudzvanywa uye kunyudzwa kuti iumbe maumbirwo anobatsira.
PTFE Sheet, Rod, & Tube- Thermal kugadzikana PTFE ndeimwe yeakanyanya kugadzikana epurasitiki zvinhu.Iko hakuna kuparara kunokosheswa pa260 ° C, kuitira kuti PTFE, panguva ino tembiricha, ichine yakawanda yezvivakwa zvayo.Kuora kunoyemurika kunotanga pamusoro pe400°C.PTFE Transition points-Iyo geometry yePTFE mamorekuru (crystalline structure) inosiyana nekushisa.Kune zvakasiyana-siyana zvekuchinja, uye iyo inonyanya kukosha ndeyeiyi inotevera: kuti pa 19 ° C inoenderana nekugadziriswa kwezvimwe zvinhu zvemuviri uye kuti pa 327 ° C iyo inofananidzwa nekuparara kwechimiro chekristalline: PTFE inotora chimiro cheamorphous. kuchengetedza iyo yega geometric fomu.Kuwedzera kwePTFE-The linear thermal yekuwedzera coefficient inosiyana nekupisa.Mukuwedzera, nekuda kwekutarisa kunokonzerwa nekushanda kwekushanda, zvidimbu zvePTFE zvinowanzoita anisotropic;nemamwe mazwi, coefficient yekuwedzera inosiyana zvakare maererano nekutungamira.PTFE Thermal conductivity-Iyo coefficient ye thermal conductivity yePTFE haina kusiyana nekushisa.Iyo yakanyanya kukwirira, kuitira kuti PTFE inogona kutorwa seyakanaka insulating zvinhu.Iko kusanganiswa kweakakodzera mafirita anovandudza thermal conductivity (ona yakazara PTFE).PTFE Kupisa chaiko-Kupisa kwakananga, pamwe nekupisa kwemukati (enthalpy) kunowedzera nekupisa.PTFE Maitiro pamberi pevamiriri vekunzePTFE Resistance kune makemikari agents-PTFE inongoita inert inopesana nezvinozivikanwa zvinhu uye makomisheni.Inorwiswa chete nesimbi dzealkaline muchikamu chekutanga, neChlorine trifluoride uye neyekutanga Fluorine pakupisa kwakanyanya uye kumanikidza.PTFE Solvent kuramba-PTFE hainyunguriki mune zvinenge zvese zvinonyungudutsa patembiricha inosvika 300°C.Fluorinated hydrocarbons inokonzeresa kumwe kuzvimba izvo zvinodzoreka;mamwe mafuta ane fluorinated zvakanyanya, patembiricha inopfuura 300 ° C, shandisa imwe mhepo inonyungudika paPTFE.PTFE Kupokana kune emuchadenga vamiririri uye chiedza-Test zvidimbu zvePTFE, zvakafumurwa kweanopfuura makore makumi maviri kumamiriro ekunze akasiyana zvakanyanya, hazvina kuratidza chero shanduko yehunhu hwavo.PTFE Kupokana kune radiations-Mafuta emagetsi emagetsi anowanzokonzera kutyora kwe PTFE molecule, kuitira kuti kuramba kwechigadzirwa kune radiations kunenge kwakashata.PTFE Gasi permeability-Iyo permeability yePTFE yakafanana nezvimwe zvinhu zvepurasitiki.Iyo permeability haina kutsamira, zviri pachena, chete pane ukobvu uye kumanikidza, asiwo pamaitiro ekushanda.Physical - mechanical propertiesTensile uye compressive zvivakwa Izvi zvivakwa zvine mwero wakakura zvakakanganiswa nemaitiro ekushanda uye hupfu hunoshandiswa.PTFE, zvisinei, inogona kushandiswa nguva dzose patembiricha inosvika 260°C, ichiine imwe compressive plasticity patembiricha iri pedyo neabsolute Zero.PTFE Flexibility-PTFE inonyatso shanduka uye haiputsi kana ichiiswa kumanikidziro e0,7 N / mm2 maererano neASTM D 790. Flexural modulus inenge 350 kusvika 650 N / mm2 pamhepo yekushisa, inenge 2000 N / mm2 pa -80 ° C. , inenge 200 N/mm2 pa100°C uye inenge 45 N/mm2 pa260°C.Impact properties-PTFE ane yakakwirira kwazvo resilience maitiro zvakare panguva yakaderera tembiricha.Plastiki ndangariro-Kana chidimbu chePTFE chikaiswa kune tensile kana kudzvinyirira kudzvinyirira pazasi pegoho, chikamu chezvinokonzeresa deformation chinoramba chiri (sechigarire deformations) mushure mekusiya kushushikana, nemugumisiro wekuti mamwe madhiri anokonzeresa muchidimbu.Kana chidimbu chikadzoserwa, aya madhiri anowanzo kusunungura mukati mechidimbu chinotangazve chimiro chayo chepakutanga.Ichi chivakwa chePTFE chinowanzo kuratidzwa se "plastic memory" uye chinoshandiswa mune akasiyana maapplication.Zvakare mazhinji ezvigadzirwa zvesemi-akapedza, nekuda kwemaitiro ekushandura, ane madhiri akafanana, kune imwe nhanho.Kana zvichidiwa kuwana zvikamu zvakapedzwa zvakadzikama pakupisa kwepamusoro, zvinokwanisika kuisa zvikamu kune tembiricha ye280°C kweawa imwe yega 6 mm yeukobvu uye wozodzitonhodza zvishoma nezvishoma.Zvikamu zvakawanikwa nenzira iyi zvinenge zvakasununguka zvachose kubva kumatambudziko emukati uye zvinowanzozivikanwa se "conditioned" kana "thermostabilised" zvinhu.Kuoma-Kuoma kweShore D, kuyerwa maererano nenzira yeASTM D 2240, ine maitiro anowanikwa pakati peD50 neD60.Maererano neDIN 53456 (mutoro 13,5 Kg ye30 sec) kuoma kunozununguka pakati pe27 ne32 N / mm2.Friction-PTFE ine yakaderera friction coefficients ezvese zvinhu zvakasimba;pakati pe0.05 ne0.09:* iyo static uye dynamic friction coefficients inenge yakaenzana, kuitira kuti pasave nekubata kana tsvimbo-kutsvedza chiito.* kana uchiwedzera mutoro, iyo friction coefficient inodzikira kusvika yasvika kune yakagadzikana kukosha* iyo friction coefficient inowedzera nekumhanya* iyo friction coefficient inoramba iripo pakusiyana kwetembiricha.Pfeka-Kupfeka kunoenderana nemamiriro eimwe nzvimbo inotsvedza uye zviri pachena zvinoenderana nekumhanya uye mitoro.Iko kupfeka kunodzikiswa zvakanyanya kana uchiwedzera mafirita akakodzera kuPTFE (ona yakazadzwa PTFE).Magetsi zvinhuPTFE Insulation-PTFE insulator yakanakisa uye yakakosha dielectric sezvinoratidzwa neiyo hukama data yakashumwa mudhetabheti uye inochengetedza hunhu uhwu mukati mehukuru hwakakura hwemamiriro ekunze, tembiricha uye ma frequency.Dielectric simba-Iyo dielectric simba yePTFE inosiyana nehupamhi uye inoderera nekuwedzera frequency.Inoramba ichingogara kusvika ku300 ° C uye haina kusiyana kunyange mushure mekurapa kwenguva refu pakupisa kwakanyanya (mwedzi mitanhatu pa300 ° C).Zvinoenderanawo nemaitiro ekushandura.Dielectric constant uye dissipation factor -PTFE ine yakaderera dielectric nguva dzose uye kuparara kwezvinhu zvinokosha;izvi zvinoramba zvisingachinji kusvika 300 ° C, mundima yefrequency inosvika 109 Hz kunyangwe mushure mekurapa kwenguva refu yekupisa (mwedzi mitanhatu pa300 ° C).Iyo dielectric inogara, dissipation factor pamwe nevhoriyamu resistivity uye surface resistivity, inoonekwa seyakazvimirira kubva kune ekuchinja maitiro.Arc-kupokana-PTFE ine kumira kwakanaka kune arc.Iyo arc kuramba nguva zvinoenderana neASTM D 495 ndeye 700 sec.Mushure mekuita kwenguva refu hapana zviratidzo zvekupisa kwepamusoro.Corona effect resistance-Kubuda kunokonzerwa nekorona kunogona kukonzera kuputika kwepamusoro pePTFE iyo, zvisinei, inoratidzwa seyakakodzera insulator kana paine misiyano yakakura.Surface propertiesIyo molecular configuration yePTFE inounza kune yayo yepamusoro anti-adhesiveness.Nechikonzero chimwe chete iyi nzvimbo hadzina kunyorova, iyo yekubata kona nemvura inosvika 110 ° uye zvinogoneka kusimbisa kuti, kunze kwekumanikidzana kwepamusoro kwe20 dine/cm, mvura haichanyorovesa PTFE.Yakakosha etching kurapwa inoita kuti nzvimbo yacho ishande uye nyoro.
Nguva yekutumira: Jun-17-2020