Kuyambitsa kwazinthu zodzaza za PTFE

Muzinthu za PTFE, zodzazidwaPTFE mankhwalandizopanga zazikulu kwambiri, m'maiko akunja odzazidwa PTFE nthawi zambiri amamalizidwa ndi PTFE utomoni kupanga chomera, monga Germany Hoechst HosTaflonTF4000 mndandanda, HosTaflonTF3000 mndandanda ndi HosTaflon2000 mndandanda.Ku China, popeza ukadaulo wopanga utomoni wa PTFE umatsalira kumbuyo kwaukadaulo wokonza, ukadaulo wodzaza PTFE umachitika pamalo opangira zinthu.Powonjezera ma fillers osiyanasiyana monga inorganic, zitsulo ndi polima mu PTFE utomoni kukonza kukana kukanikiza, kuvala kukana, kuzizira kuzizira, kukana kutentha, dimensional bata la PTFE.Zinthu zodzaza poyerekeza ndi PTFE yoyera, kukana kukakamiza kumawonjezeka ndi 5 mpaka 10, kukana kuvala kumawonjezeka ndi nthawi 1000, kukula kwa mzere kumachepetsedwa ndi 80%, kutsekemera kwamafuta kumawonjezeka ndi nthawi 5, ndi kuchepetsa kukana kwa voliyumu ndi kukana pamwamba, makamaka. amagwiritsidwa ntchito mu makampani opanga mafuta opanda kondomu mayendedwe, kubala bushings, mphete pisitoni, makina zida akalozera, etc. M'zaka zaposachedwapa, mankhwala achilendo odana ndi dzimbiri, wodzazidwa ndi PTFE monga payipi, mavavu, mapampu, etc. Lining ikukula mwachangu, lomwe ndi gawo latsopano logwiritsa ntchito PTFE yodzaza.
Malinga ndi zofunika izi ambiri ntchito fillers ndi: galasi CHIKWANGWANI, mpweya CHIKWANGWANI, graphite, quartz mchenga, molybdenum disulfide, carbon amorphous, calcium fluoride, ufa wamkuwa, zoumba, polyimide, polyphenylene, poly-p-hydroxyformate ndi zina zotero.
Zodzaza za PTFE nthawi zambiri zimawumbidwa: mtundu wodzazidwaPTFE mankhwalazimatengera kusankha kwa utomoni filler, mapangidwe chilinganizo, mlingo wa homogeneity wa zinthu kusanganikirana ndi zinthu zina.Panopa pali njira zitatu zosakaniza zomwe zimagwiritsidwa ntchito podzaza PTFE: (1) kusakaniza kowuma kumafuna chipangizo chosakanikirana chosakanikirana, chosakanikirana popanda danga lakufa, chogwirizana ndi zofunikira zonse za mankhwala.(2) kusakaniza zosungunulira, zosungunulira ndi acetone kapena methanol, kwa PTFE wodzazidwa ndi galasi.The akamaumba kuthamanga odzazidwa PTFE mankhwala zimadalira voliyumu chiŵerengero cha filler mu PTFE, monga: ndi 5% filler akamaumba kuthamanga kwa 250 bar;ndi 6% mpaka 10% kukakamiza kuumba filler kwa 350 bar;ndi 12% mpaka 25% filler akamaumba kukakamiza kwa 500 bar;ndi kukakamiza kopitilira 25% filler kuumba kwa 700 bar.Njira yopangira zinthu zodzaza ndi yofanana ndi PTFE yoyera.Koma zinthu zodzazidwa zomwe zili ndi MoS2 zimafuna kulowetsedwa mumlengalenga pa 360 ℃, kapena kutenthetsa mu nitrogen medium pa 380 ℃.Zodzaza zokhala ndi magalasi CHIKWANGWANI ndi oyenera sintering nayitrogeni sing'anga.