Ilaphu le-PTFE elinobushushu obuphezulu (i-PTFE-coated fiberglass) yi-premium media filter kwiimeko ezigqithisileyo: ukususwa kwerhasi ye-flue (isamente, ukutshisa inkunkuma, iibhoyila zamalahle ukuya kwi-260 ° C), ukuhluzwa kolwelo oludlekayo (i-acids, i-alkalis, i-oyile), ukutya / ukuhluzwa kwe-pharmacy oyinyumba, kunye nezihluzo ze-HEPA. Umphezulu ongagxiliyo uthintela ukugquma uthuli kwaye uvumela ukucoca lula. Amanqaku e-Membrane-laminated afumana ukukhutshwa kwe-ultra-low.

Ilaphu le-PTFE lobushushu obuphezulu ligcina ubushushu obugqwesileyo bobushushu ukusuka ku -180°C ukuya kuma-260°C: umthamo we-resistivity >10¹³ Ω·cm nge-200°C, i-dielectric ihlala ihleli kwi-2.0-2.1. Ngaphezulu kwe-260 ° C, i-PTFE iyathamba, ibole ngaphezu kwe-327 ° C, ilahlekelwa yi-insulation ngokusisigxina. Ngaphantsi kwe-0°C, ukugquma kuyaphucuka kodwa ukugquma kuba brittle. Hlala ngaphakathi kwe-260 ° C ukuze usebenze ngokuthembekileyo.

Iiarhente zokugqiba umphezulu ezifakwe kwilaphu le-fiberglass phambi kokutyabeka kwe-PTFE zibalulekile kwi-PTFE yokugqibela yokusebenza kwelaphu lobushushu obuphezulu. I-Organosilane coupling agents zenza iibhulorho ze-molecular phakathi kwe-fiber yeglasi ye-inorganic kunye ne-organic PTFE, ukunyusa amandla e-peel ukusuka ku-<2 N / cm ukuya kwi-4-8+ N / cm. Unyango olufanelekileyo luphinda lukhulise ukuxhathisa ukushisa (260 ° C +), ukusebenza kwe-dielectric, kunye nokumelana neekhemikhali. Ilaphu elingaphathwanga likhokelela ekudibaneni, ukugqabhuka, kunye nobomi obufutshane benkonzo.

Ipateni ye-Fiberglass weave - ecacileyo, i-twill, okanye i-satin - ichaphazela kakhulu iipropati zelaphu zobushushu obuphezulu be-PTFE. I-Satin weave inika amandla aphezulu okukrazula (2-3x plain) kunye nokuguquguquka, ilungele ukugoba okuguquguqukayo. I-Plain weave ibonelela ngokugqwesileyo kozinzo lwe-dimensional kunye nokuncamathelwa kwamaxolo, alungele usetyenziso olumileyo. I-Twill ibhalansisa zonke iipropathi zokusetyenziswa ngokubanzi.

I-Coating uniformity ye-PTFE i-high-temperature yelaphu igqitywe yimiba emine: ukubunjwa kwe-coating (ubungakanani be-particle 0.15-0.35 μm, i-viscosity, umxholo oqinileyo), i-coating & sintering process (i-blade coating ekhethwayo ngokufana), umgangatho we-substrate (ipateni ye-weave, unyango lwangaphambili), kunye nemeko yokuvelisa (20-25% R <60% <H). Dip + blade inkqubo edityanisiweyo ibhalansi ukungena kunye nokuguda komphezulu.

Ukucoca nokugcinwa ngokufanelekileyo kwandisa ubomi belaphu le-PTFE lobushushu obuphezulu. Coca emva kokusetyenziswa nasemva kokupholisa. Sebenzisa iibhrashi ezithambileyo, izicoci ezingathathi hlangothi, okanye utywala ukwenza amabala. Ungaze usebenzise iiasidi ezomeleleyo/iialkali, iblitshi, okanye izikrweqe zentsimbi. Ukuthambisa ioli ye-silicone rhoqo kunciphisa ukunxiba. Landela ezi zikhokelo ukuthintela ukonakaliswa kwengubo.

Ilaphu le-PTFE elinobushushu obuphezulu kunye nelaphu le-silicone zombini zisebenzisa ilaphu le-fiberglass njengesiseko kodwa ziyahluka kwizinto zokwaleka (i-PTFE resin vs irabha ye-silicone). I-PTFE igqwesile ekungabambeni, ukuxhathisa ukunxiba, kunye nokumelana neekhemikhali ukuya kuthi ga kwi-260°C. Ilaphu le-Silicone linika ukuguquguquka okuphezulu, ukugquma kombane, kunye nokumelana nomlilo (ukuya kuma-230 ° C). Khetha ngokusekelwe kukubaluleka kwakho.

Ilaphu le-PTFE elinobushushu obuphezulu libonelela ngokumelana neekhemikhali ezikhethekileyo, ukumelana neeasidi ezomeleleyo, iialkali, izinyibilikisi eziphilayo, kunye neegesi ezidliwayo. Eli nqaku lichaza izinto zalo ezixhathisayo, imida (isinyithi esinyibilikisiweyo se-alkali, i-agent eqinile ye-fluorinating), kunye nezinto eziphambili ezifana nobushushu, ugxininiso, kunye noxinzelelo lomatshini.

Ukufakwa kwe-PTFE akuphelelanga kwilaphu le-fiberglass. Eli nqaku lizisa ii-substrates ezi-7 ezizezinye - i-aramid, i-carbon fiber, i-PBI, isinyithi esine-porous, i-graphite, i-asbestos (ikhutshwe ngaphandle), kunye ne-ceramic fillers - kunye neempawu zabo zenkqubo, izibonelelo, ukulinganiselwa, kunye nezicelo eziphambili.

Eli nqaku licacisa ukuba kutheni ilaphu le-fiberglass engena-alkali iyeyona ikhethwayo kwilaphu le-PTFE lobushushu obuphezulu. Igquma ukudityaniswa kweekhemikhali kusetyenziswa i-silane coupling agents kunye neepropathi eziphambili zomzimba ezifana nokuzinza kwe-thermal, ukuzinza komda, kunye nokumelana nomhlwa-ukuqinisekisa ukusebenza okuhlala ixesha elide kwiindawo ezirhabaxa.