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.

Ilaphu le-PTFE elinobushushu obuphezulu (i-PTFE-coated fiberglass) ilungele amabhanti okuhambisa ukutya ngenxa yokumelana nobushushu obungama-260°C, -70°C ukuguquguquka okubandayo, indawo engabambekiyo, kunye nokuthotyelwa kwe-FDA. Usetyenziso oluphambili: ii-oveni zokubhaka (iibhiskithi, isonka, ipizza), izinto zokuhambisa ukutya okuqhotsiweyo, iintambo zokupholisa iilekese, iitonela ezikhenkcezayo, izitywini zobushushu, kunye nokusonga iirola. Inciphisa inkunkuma kunye nexesha lokucoca.

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.

Uxinzelelo lwe-Warp kunye ne-weft yelaphu le-fiberglass limisela ukusebenza kwelaphu lobushushu obuphezulu be-PTFE. Uxinaniso oluphezulu lonyusa amandla okuqina kunye nokuguda komphezulu kodwa kunciphisa amandla okukrazula (i-U-curve eguqulweyo), ukuguquguquka, kunye nokungena kokugquma. Uxinzelelo olufanelekileyo lulinganisa ukungena, ukuchasana nokukrazula, ukuguquguquka, kunye nokugqiba komphezulu. Uxinaniso oluphantsi lufanela ukugoba okuguquguqukayo; uxinaniso oluphezulu lwe-non-stick kunye ne-insulation.

Ikhalenda – ukucinezela ilaphu eligqunywe nge-PTFE phakathi kweerola zesipili ezishushu kwi-360-380°C – kuguqula ngokumangalisayo ukumila komphezulu, iipropathi zokukhulula, ukungagungqi, kunye nokusebenza koomatshini. Iyanciphisa uburhabaxa ukusuka ku-Ra 0.5-1.0 μm ukuya ku-<0.05 μm, itywina i-pinholes, iphucula ukuchasana nokugqoka, kodwa iyancipha amandla okukrazula kunye nokuguquguquka. Kubalulekile ukukhulula iilitha kunye nokufakelwa kombane.

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 lobushushu obuphezulu (i-PTFE inwebu yempahla) lukhetho lweprimiyamu yolwakhiwo oluqinileyo. Izinto eziluncedo ezingundoqo: iminyaka engama-30+ yobomi bangaphandle, indawo yokuzicoca (amanzi emvula ahlamba ubumdaka), ukuhanjiswa kokukhanya okuthambileyo (6-13%), ukukala komlilo kuDidi A, kunye namandla afana nentsimbi angaphantsi kwe-1.5 kg/m². Isetyenziswa kumabala emidlalo, kwizikhululo zeenqwelo moya, kunye nezakhiwo ezinomfanekiso kwihlabathi liphela.