Ilaphu lefiberglass eyandisiweyo (ilaphu lelaphu elikhulu) lahluke kakhulu kwilaphu eliqhelekileyo le-fiberglass kwisakhiwo somsonto. Ngonyango lwejethi yomoya yoxinzelelo oluphezulu, imicu yeglasi eqhubekayo yahlulwa, yahluzwa, kwaye igutyungelwe ibe yivolunous, intambo efana nomqhaphu. Oku kudala ilaphu elijiyileyo, elithambileyo eline-insulation ephezulu ye-thermal (i-air layers evaleleke), ukuhambelana ngcono, ukusebenza kakuhle kokucoca, kunye nokuphuculwa kokumelana nokukrazula / ukuguquguquka - ngexabiso lamandla asezantsi kancinci. Isetyenziselwa iigaskets ezinobushushu obuphezulu, ukusonga kwemibhobho, iingxowa zokucoca, kunye nezitywina ze-oveni.

Ukucoceka kwezinto ezikrwada sisiseko se-PTFE sokusebenza kwelaphu lobushushu obuphezulu. I-emulsion ye-PTFE ecocekileyo (akukho ion zetsimbi, akukho ntsalela ye-molecular-weightweight residues) iqinisekisa ukumelana nobushushu (akukho yellowing ukuya kwi-260 ° C), i-stable non-stick, kunye namandla aphezulu e-dielectric. Kwi-fiberglass, i-alkali-free E-glass (Na₂O <0.8%) igcina amandla kunye ne-insulation kwiqondo lokushisa eliphezulu; iglasi ephakathi/ephezulu yealkali ibangela ukuthotywa. Ukususwa ngokupheleleyo kwee-agents zokuluka kuthintela i-carbonization kunye ne-delamination. Ubunyulu buchaphazela ngqo ubomi benkonzo, ukuthotyelwa kwebakala lokutya, kunye nokuthembeka kombane.

Ukomiswa ngokufanelekileyo kwelaphu le-fiberglass kubalulekile kwi-PTFE yokugquma, ukufakwa kwe-resin, okanye ukulaliswa. Izonyango ezintathu eziphambili: ukususwa komswakama kwi-105-120 ° C (i-10-30 min kuxhomekeke kubunzima), ukucocwa kwe-dewaxing / thermal kwi-300-450 ° C (LOI <0.1%, gwema> 500 ° C), kunye nokufudumala kwi-60-100 ° C ngaphambi kokugubungela. Lawula ukufana kweqondo lobushushu be-oveni (±5°C), ukukhutshwa ngenkani, kwaye ukhusele amalaphu afakwe kwi-silane angaphantsi kwe-110°C. Gcina indwangu eyomileyo kwiingxowa ezivaliweyo okanye kumagumbi omileyo (<30 ° C, <40% RH).

Iteyiphu yobushushu obuphezulu be-PTFE inokumelana nokutshiza kwetyuwa ebalaseleyo, kodwa iindawo ezibuthathaka ngumaleko wokuncamathelisa kunye nemiphetho ye-fiberglass substrate. Iindlela zokuvavanya: Uvavanyo lwe-1000h olungathathi hlangothi lwetyuwa yokutshiza (NSS), ukulinganisa ukugcinwa kwamandla e-peel (≥80% efunekayo), iziphene ezibonakalayo (ukuphakamisa, ukugqabhuka), kunye ne-metal substrate corrosion. Kwiindawo zaselwandle kunye netyuwa ephezulu-yenkungu: sebenzisa i-silicone ye-PSA (hayi i-acrylic), i-substrate ye-PTFE efakwe ngokupheleleyo, itywina imiphetho nge-sealant ekwazi ukumelana nemozulu, kwaye usebenzise i-primer kwiindawo zentsimbi.

Ilaphu le-PTFE elinobushushu obuphezulu (i-PTFE-coated fiberglass) iphantse yangena kwikhemikhali, kodwa izinto ezithile zibangela ukubola phantsi kweemeko ezithile. Uhlaselo oluthe ngqo lwe-PTFE lwenzeka ngesinyithi esinyibilikisiweyo se-alkali (i-sodium, i-potassium), i-fluorinating agents eyomeleleyo (F₂, ClF₃) kumaqondo obushushu aphezulu, kunye ne-alkali eyomeleleyo etyhidiweyo ngaphezulu kwe-300 ° C. Ukonakala ngokungangqalanga kwenzeka xa i-hydrofluoric acid (HF), i-alkali egxininisiweyo eshushu, okanye i-phosphoric acid eshushu igqobhoza iziphene zokwaleka kwaye ihlasele i-fiberglass substrate. Kwinkonzo yeekhemikhali ezigqithisileyo, sebenzisa ifilimu ecocekileyo ye-PTFE ngaphandle kwe-fiberglass.

I-PTFE i-tape yobushushu obuphezulu ilahlekelwa ukubambelela emva kokusetyenziswa ngokuphindaphindiweyo ngenxa yokungcoliswa komhlaba (uthuli, ioli ye-silicone), ukungaphumeleli kwe-adhesive cohesive (intsalela), okanye i-substrate bonding ebuthathaka. Izisombululo: i-silicone ye-high-crosslink ye-PSA (ukufuduka okuphantsi, ukulinganisa ukulinganisa / ukubamba amandla), unyango lwe-primer kwi-substrate ye-PTFE, i-dense fiberglass backing, kunye nokuphathwa ngokufanelekileyo (indawo ecocekileyo, i-peel epholileyo, i-angle ye-180 °). Uvavanyo lobungakanani luqinisekisa ukuphuculwa.

Ilaphu le-PTFE elinobushushu obuphezulu (i-PTFE-coated fiberglass) inokumelana nokuxhathisa ukothuka kwe-thermal ngaphakathi koluhlu lwayo lokusebenza oluqhelekileyo lwe--70 °C ukuya kuma-260°C. Iyakwazi ukunyamezela ukukhwela ibhayisekile kobushushu obukhawulezayo, umz., ukusuka kwi--50°C kwisikhenkcisi ukuya kumatshini wokushicilela oshushu wama-260°C. Amabakala ePremium ade aphumelele ukupholisa ngesiquphe ukusuka kwi-260°C ukuya kwi-10°C emanzini. Nangona kunjalo, ukothusa izinto ezivela kumaqondo obushushu angaphezu kwe-300 ° C (kufuphi ne-PTFE's 327 ° C melting point) kuya kubangela ukuqhekeka kunye nokuchithwa kwangoko. I-fiberglass substrate ibonelela ngokuzinza kwe-dimensional; I-PTFE yokwambathisa yinto ethintelayo.

Ilaphu le-PTFE elinobushushu obuphezulu lisetyenziswa kakhulu kushishino lweekhemikhali kwizicelo ezingundoqo ezisixhenxe: iigaskets zeflange kunye nelayini yombhobho (ixhathise i-acids eyomeleleyo/alkali), i-reactor kunye ne-tank linings (ithintela ukubola kwesinyithi, ukucoca lula), iingxowa zokucoca igesi enomhlwa (ukuya kuthi ga kwi-260°C), i-anti-corrosion expansion, i-anti-corrosion extensions ukubumba okuhlanganisiweyo, kunye nokusonga kombane/kwe-thermal. I-FDA kunye ne-UL amabakala akhoyo.

I-PTFE i-tape ephezulu yokushisa egcinwe phantsi kweemeko ezichaziweyo (10-25 ° C, 40-70% RH, kude ne-UV / uxinzelelo olunzima) inobomi beshelufu obuqhelekileyo beenyanga ezi-3-6 (amabakala e-premium ukuya kwiinyanga ezili-12). Imigangatho ephambili yokuthotywa: amandla e-peel akufanele awele ngaphantsi kwe-70% yexabiso lokuqala; akukho ntsalela yokubambelela emva kokususwa kobushushu obuphezulu; akukho carbonization okanye ukuqhekeka kwiqondo lobushushu rated. Iitshekhi ezikhawulezayo: imvakalelo yokukhulula ngesandla, uvavanyo lwentsalela ye-260 ° C, kunye novavanyo lokuncipha kwe-lamination.

Ilaphu le-PTFE elinobushushu obuphezulu (i-PTFE-coated fiberglass) inika iingenelo ezine eziphambili njenge-anti-corrosion lining: inertness yekhemikhali (imelana ne-aqua regia, i-alkali eqinile, i-solvents), uluhlu olubanzi lobushushu (-70 ° C ukuya kwi-260 ° C ngokuqhubekayo, i-350 ° C peak), ukuzinza kwe-dimensional (<0.5 kunye ne-build-up, i-buildup, i-buildup, i-buildup, i-buildup, i-build up). Isetyenziswa kwimibhobho yekhemikhali, iinqaba ze-desulfurization, iitanki zokuchola, kunye nezixhobo zokutya / ze-pharma. Amanqaku e-FDA akhoyo.