PTFE high-temperature jira rinochengetedza zvakanaka magetsi ekudzivirira kubva -180°C kusvika 260°C: volume resistivity >10¹³ Ω·cm pa200°C, dielectric inogara yakagadzikana pa2.0-2.1. Pamusoro pe260 ° C, PTFE inopfava, inoora pamusoro pe327 ° C, ichirasikirwa nekudzivirira zvachose. Pazasi pe 0°C, kuvharisa kunonatsiridza asi kupfeka kunoita brittle. Gara mukati me260 ° C kuitira kushanda kwakavimbika.

Musoro wekupedzisa maajenti akaiswa kune jira refiberglass pamberi pePTFE coating yakakosha kune yekupedzisira PTFE yakakwirira-tembiricha machira kuita. Organosilane coupling agents inogadzira mabhiriji emamorekuru pakati peinorganic glass fiber uye organic PTFE, inowedzera masvuura simba kubva pa<2 N/cm kusvika 4-8+ N/cm. Kurapa kwakakodzera kunowedzerawo kupisa kupisa (260 ° C +), dielectric performance, uye makemikari kuramba. Mucheka usina kurapwa unotungamira kune delamination, kutubukira, uye hupenyu hupfupi hwesevhisi.

Fiberglass weave pattern - plain, twill, kana satin - inonyanya kukanganisa PTFE high-temperature machira emhando. Satin weave inopa simba repamusoro rekubvarura (2-3x bani) uye kuchinjika, yakanakira kukotama. Plain weave inopa yakanakisa dimensional kugadzikana uye peel adhesion, inokodzera static application. Twill inoenzanisa zvivakwa zvese zvekushandisa zvakajairika.

Coating uniformity yePTFE high-temperature jira inotarirwa nezvinhu zvina: coating formulation (particle size 0.15-0.35 μm, viscosity, solid content), coating & sintering process (blade coating inosarudzwa kufanana), substrate quality (weave pattern, pre-treatment), uye kugadzirwa kwemamiriro ezvinhu (20-25% R <60). Dip + blade yakasanganiswa maitiro anoyera kupinda uye kutsetseka kwepamusoro.

Kuchenesa uye kugadzirisa kwakakodzera kunowedzera hupenyu hwePTFE yakakwirira-tembiricha machira. Kuchenesa mushure mekushandisa uye mushure mekutonhora. Shandisa mabhurashi akapfava, simbi dzisina divi, kana doro kuitira tsvina. Usamboshandisa akasimba acids/alkalis, bleach, kana metal scrapers. Yenguva dzose silicone mafuta lubrication inoderedza kupfeka. Tevedzera nhungamiro idzi kudzivirira kukuvadzwa kwejasi.

PTFE high-temperature jira uye silicone jira zvose zvinoshandisa fiberglass jira sechigadziko asi zvakasiyana mukugadzirisa zvinhu (PTFE resin vs silicone rubber). PTFE inokunda mukusanamatira, kupfeka kuramba, uye makemikari kuramba kusvika 260°C. Silicone jira rinopa kuchinjika kwepamusoro, kuvharwa kwemagetsi, uye kudzivirira moto (kusvika 230 ° C). Sarudza zvichibva pane zvaunokoshesa.

PTFE high-temperature jira inopa yakasarudzika kemikari kuramba, inoshingirira maasidhi akasimba, alkalis, organic solvents, uye magasi anoparadza. Ichi chinyorwa chinotsanangudza zvinhu zvayo zvinoramba, zvisingakwanisi (akanyungudutswa alkali simbi, yakasimba fluorinating agents), uye zvakakosha zvinhu zvakaita setembiricha, kutarisisa, uye kushushikana kwemagetsi.

PTFE impregnation haina kugumira kune fiberglass jira. Ichi chinyorwa chinosuma 7 mamwe ma substrates - aramid, carbon fiber, PBI, porous simbi, graphite, asbestos (yakadzimwa kunze), uye ceramic fillers - ine maitiro avo maitiro, zvakanakira, zvisingakwanisi, uye zvakakosha mashandisirwo.

Ichi chinyorwa chinotsanangura kuti sei alkali-isina fiberglass jira riri iro rinofarirwa substrate yePTFE yakakwirira-tembiricha jira. Inovhara kemikari kusungirirwa kuburikidza ne silane coupling agents uye akakosha emuviri zvimiro senge kugadzikana kwemafuta, kugadzikana kwedimensional, uye kuramba kwecorrosion - kuve nechokwadi chekuita kwenguva refu munzvimbo dzakaoma.

Senyanzvi yekugadzira PTFE machira ekushisa kwepamusoro, Jiangsu Aokai New Materials anogovera ruzivo rwakakodzera indasitiri newe. Edge warping uye kudonha kubva kuPTFE yakakwirira tepi matepi haawanzo kukonzerwa nechinhu chimwe chete, asi mhedzisiro kubva kune yakasanganiswa mhedzisiro yekutadza kusarudzwa tepi,