Nsalu yagalasi yowonjezeredwa ya fiberglass (nsalu ya ulusi wochuluka) imasiyana kwambiri ndi nsalu wamba ya fiberglass pamapangidwe a ulusi. Kupyolera mu chithandizo cha jeti ya mpweya wothamanga kwambiri, zitsulo zamagalasi zopitirira zimalekanitsidwa, zopindika, ndi kufinyidwa kukhala ulusi wowala ngati thonje. Izi zimapanga nsalu zokulirapo, zofewa zokhala ndi kutenthetsa kwapamwamba kwambiri (zosanjikiza mpweya), kufananiza bwino, kusefera kwapamwamba, komanso kukana kung'ambika / kusinthasintha - pamtengo wa mphamvu yotsika pang'ono. Amagwiritsidwa ntchito popanga ma gaskets otentha kwambiri, zokutira mapaipi, zikwama zosefera, ndi zisindikizo za uvuni.

Kuyera kwazinthu zopangira ndi maziko a PTFE ntchito ya nsalu yotentha kwambiri. Emulsion yoyera kwambiri ya PTFE (palibe ma ion zitsulo, palibe zotsalira zochepetsera ma molekyulu) zimatsimikizira kukana kutentha (palibe chikasu mpaka 260 ° C), osasunthika osasunthika, komanso mphamvu yayikulu ya dielectric. Kwa magalasi a fiberglass, E-glass yopanda alkali (Na₂O <0.8%) imasunga mphamvu ndi kutsekemera pa kutentha kwakukulu; magalasi apakati/apamwamba-alkali amachititsa kuwonongeka. Kuchotsa kwathunthu kwa zoluka zoluka kumalepheretsa carbonization ndi delamination. Kuyera kumakhudza mwachindunji moyo wautumiki, kutsata chakudya, komanso kudalirika kwamagetsi.

Kuyanika koyenera kwa nsalu ya fiberglass ndikofunikira pakupaka kwa PTFE, kuyika utomoni, kapena kuyanika. Mankhwala atatu akuluakulu: kuchotsa chinyezi pa 105-120 ° C (10-30 min malinga ndi kulemera kwake), kuyeretsa kwa dewaxing / kutentha kwa 300-450 ° C (LOI <0.1%, kupewa> 500 ° C), ndi kutentha kwa 60-100 ° C musanayambe kupaka. Yang'anirani kutentha kwa uvuni (± 5 ° C), kukakamiza kutulutsa chinyezi, ndikuteteza nsalu zothira silane pansi pa 110 ° C. Sungani nsalu zouma m'matumba osindikizidwa kapena zipinda zouma (<30 ° C, <40% RH).

Tepi ya PTFE yotentha kwambiri imakhala ndi kukana kutsitsi kwa mchere, koma mfundo zofooka ndi zomatira ndi m'mphepete mwa fiberglass gawo lapansi. Njira zowunikira: Kuyesa kwa 1000h osalowererapo mchere wa mchere (NSS), kuyeza kusungidwa kwa peel mphamvu (≥80% yofunika), zolakwika zowoneka (kukweza, kuphulika), ndi dzimbiri lachitsulo. Pamalo am'madzi komanso okhala ndi chifunga chamchere wambiri: gwiritsani ntchito silicone PSA (osati acrylic), gawo lapansi la PTFE lokhazikika, sindikizani m'mphepete ndi chosindikizira cholimbana ndi nyengo, ndikuyika zoyambira pazitsulo.

Nsalu ya PTFE yotentha kwambiri (PTFE-yokutidwa ndi fiberglass) imakhala yocheperako, koma zinthu zina zimayambitsa dzimbiri nthawi zina. Kuukira kwachindunji kwa PTFE kumachitika ndi zitsulo zosungunuka za alkali (sodium, potaziyamu), ma fluorinating agents amphamvu (F₂, ClF₃) pa kutentha kwambiri, ndi alkalis amphamvu osungunuka pamwamba pa 300 ° C. Kudzimbiri kosalunjika kumachitika pamene hydrofluoric acid (HF), alkali yotentha kwambiri, kapena asidi wotentha wa phosphoric alowa ndi zopindika ndikuukira gawo lapansi la fiberglass. Pakuti kwambiri mankhwala utumiki, ntchito koyera PTFE filimu popanda fiberglass.

Tepi ya PTFE yotentha kwambiri imataya kumamatira pambuyo pogwiritsidwa ntchito mobwerezabwereza chifukwa cha kuipitsidwa kwa pamwamba (fumbi, mafuta a silicone), kulephera kwa zomatira (zotsalira), kapena kugwirizanitsa kofooka kwa gawo lapansi. Mayankho: silicone ya high-crosslink PSA (kutsika pang'ono, kugwedeza bwino / kugwira mphamvu), chithandizo choyambirira pa gawo lapansi la PTFE, magalasi a fiberglass wandiweyani, ndikugwira bwino (malo oyera, peel ozizira, 180 ° angle). Kuyesa kwachulukidwe kumatsimikizira kusintha.

Nsalu yotentha kwambiri ya PTFE (PTFE-yokutidwa ndi fiberglass) imakhala ndi kukana kwamphamvu kwa kutentha kwapakati pa -70°C mpaka 260°C. Imatha kulekerera kutentha kwapang'onopang'ono, mwachitsanzo, kuchoka pa -50 ° C mufiriji kupita ku makina osindikizira otentha a 260 ° C. Maphunziro apamwamba amapulumuka ngakhale kuzizira kwadzidzidzi kuchokera ku 260 ° C mpaka 10 ° C madzi. Komabe, kugwedeza zinthu kuchokera kutentha pamwamba pa 300 ° C (pafupi ndi PTFE's 327 ° C melting point) kungayambitse kusweka ndi delamination mwamsanga. Gawo la fiberglass limapereka bata laling'ono; Chophimba cha PTFE ndiye cholepheretsa.

PTFE mkulu-kutentha nsalu chimagwiritsidwa ntchito makampani mankhwala kwa ntchito zisanu ndi ziwiri zofunika: flange gaskets ndi linings chitoliro (amakana zidulo amphamvu / alkalis), riyakitala ndi linings thanki (kupewa dzimbiri zitsulo, kuyeretsa mosavuta), matumba fyuluta kwa dzimbiri chitoliro mpweya (mpaka 260 ° C), odana dzimbiri kukulitsa, zomangira zomangira, zomangira zomangira, zomangira zomangira, zomangira zomangira, zomangira zomangira zolumikizira. composite akamaumba, ndi magetsi / matenthedwe kutchinjiriza wraps. FDA ndi UL magiredi alipo.

Tepi ya PTFE yotentha kwambiri yosungidwa pansi pamikhalidwe yodziwika (10-25 ° C, 40-70% RH, kutali ndi UV / kupanikizika kwakukulu) imakhala ndi moyo wa alumali wa miyezi 3-6 (makalasi apamwamba mpaka miyezi 12). Zofunika zowonongeka: mphamvu ya peel siyenera kutsika pansi pa 70% ya mtengo woyamba; palibe zotsalira zomatira pambuyo pochotsa kutentha kwakukulu; palibe carbonization kapena akulimbana pa kutentha oveteredwa. Kufufuza mwachangu: kumasuka kwapamanja, kuyesa kotsalira kwa 260 ° C, ndi kuyesa kwa lamination shrinkage.

Nsalu yotentha kwambiri ya PTFE (PTFE-yokutidwa ndi fiberglass) imapereka zabwino zinayi zazikulu monga anti-corrosion lining: inertness mankhwala (amatsutsa aqua regia, alkalis amphamvu, zosungunulira), kutentha kwakukulu (-70 ° C mpaka 260 ° C mosalekeza, 350 ° C pachimake), kukhazikika kwa dimensional (<0.5% kukhazikika), kuletsa kukhazikika kwapamwamba (<0.5%) Amagwiritsidwa ntchito m'mapaipi amankhwala, nsanja za desulfurization, matanki otola, ndi zida zazakudya/zamankhwala. Maphunziro a FDA alipo.