Eli nqaku lazisa inkqubo epheleleyo esisiseko yokufakela ilaphu le-fiberglass nge-PTFE emulsion. Amanyathelo asixhenxe angundoqo: ① Unyango lwangaphambili (ukukhutshwa kwewaxing/deizing) kuma-350-400°C ukususa ii-arhente zokulinganisa amalaphu; ② Ukwakhiwa kwe-emulsion kunye ne-40-55% umxholo oqinileyo kunye ne-surfactants yokuphucula ukumanzisa; ③ Ukukhulelwa ngendlela yediphu okanye iblade kagqirha; ④ Ukomisa kwi-100-150 ° C ukukhupha amanzi ngobunono kwaye wenze ifilimu ye-PTFE eyomileyo; ⑤ I-Sintering kwi-360-390 ° C (ukuya kwi-400 ° C) ukunyibilikisa amaqhekeza e-PTFE kwifilimu eqhubekayo; ⑥ I-Multi-cycle impregnation-drying-sintering ephindaphindiweyo ngamaxesha angama-2-4 ukufikelela kwithagethi yobukhulu kunye nomxholo we-resin (45-65%); ⑦ Unyango lwasemva konyango olubandakanya unyango lwe-corona, ukusikwa komphetho, ukujija kunye nokuhlolwa komgangatho. Amanqaku okulawula angundoqo: ukuchithwa ngokupheleleyo, ukumanzisa kwe-emulsion epheleleyo, ukomisa ngokuthe ngcembe, ubushushu obuchanekileyo bokutshisa, kunye nokuxinana kokutyabeka okungaguqukiyo. Iimveliso zikhonza i-laminates ye-copper-clad high-frequency, i-high-temperature conveyor belts kunye ne-architectural membrane materials.

Eli nqaku lazisa izinyibilikisi eziphilayo ezinokumelana nelaphu le-PTFE lobushushu obuphezulu. Ilaphu le-fiberglass egqunywe nge-PTFE libonisa ukunganyaniseki kweekhemikhali okungaqhelekanga, ukumelana phantse nazo zonke izinyibilikisi eziqhelekileyo eziphilayo phantsi kweemeko eziqhelekileyo zokusebenza ngaphandle kokutshatyalaliswa, ukudumba okanye ukusabela kweekhemikhali. Iindidi ezinyamezelekayo ziquka: i-alcohols (i-methanol, i-ethanol, i-isopropanol), i-ketones (i-acetone, i-MEK, i-cyclohexanone), i-esters (i-ethyl acetate, i-butyl acetate), i-hydrocarbons (ipetroli, i-toluene, i-xylene, i-hexane), i-halogenated hydrocarbons (i-dichloromethane, i-ether, i-carbon chlorodethylene, i-ether I-THF), i-organic acids (i-glacial acetic acid, i-formic acid), i-amines kunye ne-amides (i-triethylamine, i-DMF), i-phenols, kunye nezinye ezifana ne-carbon disulfide, i-pyridine, ioli ye-silicone kunye ne-brake fluid.

Eli nqaku libandakanya iimfuno zesantya sokupholisa ngexesha le-PTFE lobushushu obuphezulu belaphu sintering. Emva kokutshisa kwi-380-400 ° C, ilaphu kufuneka lidlule ngokukhawuleza kwindawo ye-crystallization-sensitive zone ye-310-315 ° C. Izinga lokupholisa elicetyiswayo lincinci i-30-50 ° C / min (ilaphu elincinci linokufikelela kwi-100-200 ° C / min ngokupholisa umoya). Ukupholisa okukhawulezayo (ukucima) kuvelisa i-crystallinity ephantsi (45-50%), inikezela iingubo ezithambileyo, ezinzima kunye neendawo ezigudileyo, ukunamathela okuqinileyo, ukusebenza kakuhle okungahambi kakuhle, kunye nokuchasana ne-delamination kunye nokuqhekeka. Ukupholisa okucothayo (ukupholisa kwesithando somlilo) kubangela i-crystallinity ephezulu (i-60-70%), ebangela ukuba i-rigid, i-brittle coatings ejongene nokunciphisa, i-peeling kunye ne-microcracks.

Ilaphu elinobushushu obuphezulu be-PTFE lenziwa ngokugquma i-PTFE kwilaphu le-fiberglass eyomelele kakhulu, linika amandla anqabileyo, ukuxhathisa ubushushu, iipropati ezinganamatheli, ukumelana neekhemikhali, kunye nokukhuhlana okuphantsi. Usetyenziso oluphambili lubandakanya: ukuhanjiswa kwemizi-mveliso (ukupakishwa kokunciphisa ubushushu, ukubhaka ukutya, izomisi zelaphu, ukomisa iphepha/ifilimu); ilaphu lokukhulula elidityanisiweyo kunye neelinen ezishushu zokucofa umqamelo; ukuwelda amakhethini akhuselayo kunye neebhatyi ze-thermal insulation; i-motor yombane kunye ne-transformer insulation; ukwakha iibheringi zokutyibilika kunye nezixhaso zemibhobho; ukuhluzwa kweekhemikhali kunye nokutywinwa kwevalvu kwindawo ezonakalisayo. Amandla aphezulu okuqina aqinisekisa ukuqina phantsi koxinzelelo, ukukrazula, ukuguquguquka okuphindaphindiweyo, kunye noxinzelelo oluphezulu lobushushu bomatshini kuzo zonke ezi zicelo zahlukeneyo zomsebenzi onzima.

Lo mfutshane wobugcisa ovela kuJiangsu Aokai uhlalutya indlela amaqondo obushushu aphantsi okanye aphezulu alonakalise ngayo i-PTFE yobushushu obuphezulu. I-sintering ephantsi ishiya amasuntswana anganyibilikiyo, okwenza i-micro-pores, i-coating-substrate bonding ebuthathaka, iindawo ezirhabaxa, amandla omatshini angasebenziyo, kunye nenkangeleko emhlophe yobisi. Ubushushu obugqithisileyo bubangela ukuthotywa kwe-PTFE thermal, kuvelisa imingxunya, amaqamza, brittleness, yellow-to-black discoloration, kunye nokukhupha imisi eyityhefu. Zombini ezi zinto zigqithileyo zitshabalalisa ukubumbana, ukusebenza okungabambekiyo, ukuguquguquka, ukugquma, kunye nokuzinza komda.

Ikhalenda – ucinezela 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 nommandla wokuvelisa (20-25% R <60%). Dip + blade inkqubo edityanisiweyo ibhalansi ukungena kunye nokuguda komphezulu.

Ilaphu le-PTFE elinobushushu obuphezulu libonelela ngokuxhathisa okukhethekileyo kweekhemikhali, 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, ukugxila, kunye noxinzelelo lomatshini.

Njengomvelisi oqeqeshiweyo wamalaphu obushushu obuphezulu be-PTFE, i-Jiangsu Aokai New Materials ikunika ulwazi lobungcali. Eyona njongo yonyango lomphezulu we-fiberglass kukwakha ibhulorho yemolekyuli phakathi kwe-inorganic fiberglass kunye ne-PTFE yendalo, ukuze basombulule ngokusisiseko inc yabo.