Ukruthakruthwano oluphantsi kunye nobuncinci bokusetyenziswa kwamandla zezona nzuzo zigqibeleleyo ezibonelelwa ngamatywina e-PTFE.La matywina anokusetyenziswa ngaphandle kweengxaki kunye nokomileyo ...
Nangona iipropati zayo eziphawulekayo ezinyulu, ezingagcwaliswanga okanye zinyulu i-PTFE ayanelanga kwinani lezicelo zobunjineli ezifuna kakhulu.Ingakumbi, ukuhamba kwayo okubandayo okanye ukuziphatha okurhubuluzayo kuthintele ukusetyenziswa kwe-PTFE kwizicelo zoomatshini.Nakwiqondo lobushushu begumbi, i-PTFE ifumana uguquko olubalulekileyo ekuhambeni kwexesha xa iphantsi komthwalo oqhubekayo.Kwakhona, i-PTFE enyulu ayinako nakuphi na ukomelela kwaye inxiba ngokukhawuleza nangona i-coefficient yayo ephantsi ye-friction.Kwi-1960, ukongezwa kwezihluzi kwafunyanwa ukuba ukuphucula inani leempawu zomzimba, ngakumbi ukukhasa kunye nesantya sokuguga.Uninzi lwezihluzi zizinzile ukuya kuthi ga kwi-400 °C, ngoko ke azithinteli ukusetyenziswa kumaqondo obushushu aphezulu.Oludweliswe ngezantsi zizinto eziqhelekileyo zokuzalisa kunye nefuthe lazo kwiipropati ezibonakalayo zekhompawundi ye-PTFE.
Ifiber yeglasi
Ifiber yeglasi yinto eqhelekileyo esetyenziswayo yokuzalisa enempembelelo entle kwi-creep performance ye-PTFE, encitshiswe kumaqondo obushushu aphantsi naphezulu.Kwakhona yongeza ukuxhathisa ukunxiba kwaye inika amandla afanelekileyo oxinzelelo.Esi songezo sisebenza ngekhemikhali ngaphandle kobukho be-hydrofluoric acid kunye neziseko ezomeleleyo.Inempembelelo encinci kwiipropati zombane.
Ikhabhoni kunye nekhabhoni-graphite
Ikhabhoni inciphisa ukurhubuluza, yonyusa ubulukhuni kwaye inyuse ubushushu be-PTFE.Ukumelana nokunxitywa kweekhompawundi ezizaliswe yikhabhoni kuphucula ngakumbi ngokudityaniswa negraphite.Ikhabhoni yenye yezona zihluzi zingasebenziyo ngaphandle kweendawo ezine-oxidizing apho iglasi iqhuba ngcono.Ikhabhoni ibonelela ngokwenziwa kombane kwi-PTFE.I-PTFE ezaliswe ngekhabhoni idla ngokusetyenziswa kwizicelo zokutywinwa kwe-pneumatic.Ii-compounds ezinekhabhoni edityaniswe negraphite zezona zinto zikhethwayo kwizicelo ezingathanjiswanga.
I-carbon fiber
Ukongezwa kwe-carbon fiber kwi-PTFE itshintsha iipropathi zayo ngendlela efanayo nefiber yeglasi.Yehlisa i-creep, yonyusa i-flex kunye ne-compressive modulus kwaye iphakamisa ubulukhuni.Ngokubanzi, i-carbon fiber encinci kunefiber yeglasi iyadingeka ukufezekisa umphumo ofanayo.I-coefficient yokwandiswa kwe-thermal iyancipha kwaye i-thermal conductivity iphezulu kwi-compounds ye-carbon fiber egcwele i-PTFE.Izinga lokunxiba liyehla xa iinxalenye zekhabhoni zefayibha zithanjiswa ngamanzi.Ifayibha yeCarbon inert ngokwekhemikhali kwaye ingasetyenziswa kwiziseko ezomeleleyo kunye ne-hydrofluoric acid.
Igraphite
Igraphite yikristale yokuguqulwa kwekhabhoni ecocekileyo.I-PTFE egcwele igraphite ineyona coefficients isezantsi yokukhuhlana ngenxa yeempawu ezisezantsi zokukhuhlana kwegraphite.Ineempawu ezigqwesileyo zokunxiba, ngakumbi ngokuchasene neendawo zokukhwelana ezithambileyo kwaye ibonisa isakhono sokuthwala umthwalo ophezulu kwiinkqubo zoqhagamshelwano ezinesantya esiphezulu.Igraphite yi-inert yekhemikhali eyenza ukuba isetyenziswe kumajelo eendaba ezonakalisayo.
Ubhedu
Ubhedu sisithako esiqhelekileyo sesinyithi.Ubuninzi obukhulu (i-40 ukuya kwi-60% ngobunzima) bobhedu bunciphisa i-deformation phantsi komthwalo kunye nokunyusa i-thermal kunye ne-electrical conductivity ye-PTFE compounds.Ezi mpawu zimbini ziluncedo kwizicelo apho inxalenye iphantsi komthwalo kumaqondo obushushu agqithisileyo.I-PTFE egcwele iBronze inikezela ngeempawu ezibalaseleyo zokuxhathisa i-extrusion.Ibronzi yingxubevange yobhedu kunye netoti kwaye inokuhlaselwa yimichiza ethile.I-oxidation yobhedu inokubangela ukuguqulwa kombala kwenxalenye egqityiweyo ngaphandle kokuchaphazela umgangatho wemveliso.PTFE ezaliswe ngobhedu isetyenziswa ngokubanzi kwi-hydraulic rod kunye ne-piston seal applications.
I-Molybdenum disulfide (MoS2)
I-Molybdenum disulphide yonyusa ubulukhuni kunye nokuqina kwe-PTFE ngelixa iyancipha ukukhuhlana.Inempembelelo encinci kwiimpawu zayo zombane.I-Chemically, ubukhulu becala ayisebenzi kwaye inyibilika kuphela kwi-acid oxidizing eqinile.Idla ngokusetyenziswa kwiipesenti zobunzima obuncinci kwaye idibene nezinye izizalisi ezifana nefiber yeglasi.
Ipolyester enuka kamnandi
Ipholiyesta enuka kamnandi njengesithako sokuzalisa inyusa ukumelana nobushushu obuphezulu be-PTFE kwaye igqwesile ekusetyenzisweni kwindawo ethambileyo, eguqukayo yokukhwelana.
Izongezo zombala
Kuyenzeka ukuba wenze i-pigment ye-PTFE ngokusebenzisa izongezo zombala ezingaphiliyo ezimelana nobushushu obutshisayo be-PTFE.Ii-pigments azitshintshi kakhulu iimpawu ze-PTFE.Ukudityaniswa kwee-pigments kunye nezinye izihluzi ziyenzeka.Iifayile zobunikazi kunye nendibaniselwano yesihluziI-Parker izama ngokuqhubekayo ukukhangela kunye nokuphuhlisa imixube eyodwa kunye nemixube ukomeleza ukusebenza kokutywinwa kwezona zicelo zigqithisileyo.
Ixesha lokuposa: Aug-16-2016