PTFE high-temperature machira ekubikisa mabheti anopa mana akakosha mabhenefiti: kusashanda kwetsvimbo (hapana mafuta kana hupfu hunodiwa, mabheki akapfava anoburitswa zvakachena), tembiricha yakakura (-70 ° C kusvika 260 ° C, yakachengeteka muhovhoni kusvika mufiriji), kushandiswazve (zviuru zvemajini, zviri nyore kuchenesa), uye kunyange kupisa conduction (kunodzivirira kupisa, kudzikamisa brown). Chikafu-giredhi FDA inoenderana, ivo vanobuda kunze bepa rematehwe uye kupfuura e-silicone mats ane zvirinani kutamisa kupisa uye kunaka kwepamusoro magadzirirwo.

PTFE high-temperature jira yakakosha muindasitiri yenguo interlining. Zvishandiso zvakakosha: mabhandi asingagumi ekutakura mabhandi ekuenderera mberi kusanganisa michina (inodzivirira inopisa inonyunguduka inonamatira, isina kuunyana kutakura), isina-tsvimbo yekuvharira uye jira repadhi remashina ekupisa (anodzivirira maplatens kubva pakusvibiswa kweanonamatira), mabhandi ekutakura e dot paste/powder coating inlines kuomesa/kunyungudutsa), uye mavhavha eshangu dzesimbi yekutsikirira muenzaniso. Hukobvu hunotangira pa 0.13mm (light padding) kusvika 0.55mm (heavy-duty conveyor belts).

Anti-static PTFE jira rinowanikwa nenzira mbiri huru: kupfekedza doping (kusanganisa conductive mafirita senge kabhoni dema muPTFE emulsion, kugadzira percolation network panguva yakaoma concentration) uye substrate weaving (kupinza conductive fibers mu fiberglass jira). Surface resistivity inodzorwa pa10⁵–10⁹ Ω. Iyo musimboti: gadzira iyo conductive nzira inodonhedza static charges ipapo, kudzivirira kuunganidzwa kune njodzi. Grounding inosungirwa kuti ishande inoshanda.

PTFE high-temperature fabric (PTFE-coated fiberglass) inopa yakasarudzika makemikari kuramba, withstanding concentrated acids (kusanganisira aqua regia), alkali yakasimba (pakamuri tembiricha), organic zvinonyungudutsa, uye oxidizing agents. Kunze kwe: simbi yakanyungudutswa yealkali uye yakakwirira-tembiricha halogen makomisheni anorwisa PTFE. Kukuvadzwa kwekuputira kunofumura fiberglass kune hydrofluoric acid uye inopisa yakadzika alkalis. Tembiricha iri pamusoro pe260°C inoderedza kuramba. Kune akawanda emakemikari nharaunda, PTFE jira rinoramba rakagadzikana uye rakavimbika.

Kuomesa inhanho yakakosha muPTFE yakakwirira-tembiricha yekugadzira machira. Zvikanganiso zvakajairika zvinosanganisira: kutsemuka (kunyanya kuomesa, kuomeswa kwepamusoro), kubhururuka kutama (zvimedu zvinofamba kumusoro, hukama hwemukati husina simba), pinholes / blisters (mhepo yakavharirwa kana mhepo), mavara machena uye chalking (kusimuka kwesurfactant kana kusakwana kusanganiswa), kutsvuka / kubikira (kupisa kwezvinowedzera), delamination (kudonha kana kunyungudika kweorenji) shrinkage), pasi pakaoma asi mukati memvura (kusvuura mateya unyoro), uye mipendero yakakora (kofi-ring effect). Mhinduro dzinosanganisira kudzora kuomesa profiles, kufefetedza kwakaringana, uye substrate pretreatment.

PTFE emulsion impregnation yemucheka wefiberglass inoda vabatsiri vakasiyana-siyana kuti vakwanise kupfekedza yunifomu, kunamatira kwakasimba, uye nzvimbo dzisina kukanganisa. Zvinowedzera zvekuwedzera zvinosanganisira: wetting agents (kuderedza kushushikana kwepasi, kunatsiridza kupinda), thickeners (control viscosity uye coating uremu), pH regulators (stabilize emulsion papH 9-10), silane coupling agents (kunamatirisa kune girazi), firimu-forming aids (PFA/FEP ye sintering), inoshanda mafirita (kupfeka mapikisi, maconductors ekudzivirira) (slow drying). Kusarudzwa kunoenderana ne substrate uye kuita zvinodiwa.

Yakawedzerwa fiberglass jira (yakawanda shinda yeshinda) inosiyana zvakanyanya kubva kune yakajairwa fiberglass jira mune yeshinda chimiro. Kuburikidza ne-high-pressure air jet treatment, inoenderera mberi girazi filaments inoparadzaniswa, crimped, uye fluffed kuita voluminous, donje-seshinda. Izvi zvinogadzira jira rakakora, rakapfava nepamusoro pekupisa kwemafuta (akavharirwa mhepo akaturikidzana), kuenderana kuri nani, kusefa kwepamusoro, uye nekunatsiridza kubvarura/kuchinjika kuramba - pamubhadharo wesimba rakaderera zvishoma. Inoshandiswa kune yakakwira-tembiricha gaskets, pombi wraps, mabhegi ekusefa, uye zvisimbiso zveoveni.

Raw material kuchena ndiyo hwaro hwePTFE yakakwirira-tembiricha machira kuita. High-purity PTFE emulsion (hapana simbi ions, hapana yakaderera-molecular-uremu residues) inovimbisa kupisa kupisa (pasina yellowing kusvika ku260 ° C), yakagadzikana isina tsvimbo, uye yakakwirira dielectric simba. Kune fiberglass, alkali-isina E-girazi (Na₂O <0.8%) inochengetedza simba uye kuvhara pakupisa kwakanyanya; yepakati/yakakwirira-alkali girazi inokonzera kuora. Kubviswa kwakazara kweanoruka saizi ejenti kunodzivirira carbonization uye delamination. Kuchena kunobata zvakananga hupenyu hwesevhisi, kutevedza kwegiredhi rekudya, uye kuvimbika kwemagetsi.

Kunyatsoomeswa kwejira refiberglass kwakakosha kune inotevera PTFE coating, resin impregnation, kana lamination. Mishonga mitatu mikuru: kubvisa unyoro pa 105-120 ° C (10-30 min zvichienderana nehuremu), dewaxing / thermal kuchenesa pa 300-450 ° C (LOI <0.1%, kudzivisa> 500 ° C), uye preheating pa 60-100 ° C isati yaputira. Dzora tembiricha yehovhoni kufanana (± 5°C), kumanikidzira kubvisa humidification, uye chengetedza machira ane silane ari pasi pe110°C. Chengetedza machira akaomeswa mumabhegi akavharwa kana makamuri akaoma (<30 ° C, <40% RH).

PTFE high-temperature fabric (PTFE-coated fiberglass) inenge ine makemikari inert, asi zvimwe zvinhu zvinokonzera kuora mumamiriro ezvinhu chaiwo. Kurwisa kwakananga kwePTFE kunoitika nesimbi yakanyungudutswa yealkali (sodium, potassium), yakasimba fluorinating agents (F₂, ClF₃) pakupisa kwakanyanya, uye alkalis akanyunguduka akasimba pamusoro pe300°C. Kuora kusina kunanga kunoitika kana hydrofluoric acid (HF), inopisa yakadzika alkalis, kana inopisa phosphoric acid ikapinda zvakakanganisika zvekupfeka uye kurwisa iyo fiberglass substrate. Nekunyanyisa kemikari sevhisi, shandisa yakachena PTFE firimu isina fiberglass.