PTFE ndizovuta kuumba ndi yachiwiri ndondomeko.Zithunzi za PTFEali ndi mlingo waukulu wa shrinkage ndi kukhuthala kwapamwamba kwambiri kusungunuka, kotero sikungagwiritsidwe ntchito m'zinthu zachiwiri zowonongeka monga jekeseni akamaumba ndi calendering, zomwe zimagwiritsidwa ntchito popanga mapulasitiki.PTFE ndodo nkhosa extruder amakwaniritsa zofunika processing.Ndiye chifukwa chiyani PTFE ndiyovuta kuyikonza?
1. Zowonongeka zamakina ndi mphamvu zonyamula katundu.Mphamvu yamakina a PTFE ndi 14 mpaka 25 MPa yokha, yopanda kulimba, koma kutalika kwa fracture ndi yayikulu.Coefficient ya kukula kwa mzere ndi yayikulu.Mu -50 ~ 250 ℃, ndi PTFE liniya kukula koyenelera 1.13 × 10-4 ~ 2.16 × 10-5 / ℃, ndi 13 nthawi zitsulo.Choncho, n'zosavuta kupunduka, ming'alu, ndi zochitika zina ndi zipangizo zina.
2. Kusayenda bwino kwamafuta.Thermal conductivity yekha 0.24kcal/(mh-℃), zosavuta chifukwa matenthedwe kukula, kutopa matenthedwe, ndi mapindikidwe matenthedwe.
3. Osauka kukwawa kukana, zosavuta ozizira otaya.PTFE mu udindo wautali wa katundu, zokwawa ndi zazikulu, ndipo sachedwa kuzizira otaya chodabwitsa.Kulephera kukana abrasion,PTFEkuuma kwakuthupi ndi kochepa, ndipo abrasion ndi yayikulu.Pamene katundu (P) ndi kutsetsereka liwiro (V) kuposa zinthu zina, kuvala ake frictional amakhala lalikulu.Mtengo wa PV ndiye kuti ndi wocheperako pakugwiritsira ntchito ndipo ndalama zopangira ndizokwera.Zomwe zili pamwambazi za PTFE zimachepetsa ntchito yake, kuti ipititse patsogolo ntchito zake zonse.Kafukufuku wa PTFE kunyumba ndi kunja ayang'ana kwambiri kupeza njira zoyenera zosinthira, motero kuwongolera magwiridwe antchito ake pamlingo wina ndikukulitsa ntchito zake zosiyanasiyana.
4. Imakhalanso ndi kukana kwambiri kutentha kwapamwamba ndi kotsika, komwe kumapangitsa kuti ikhale yogwiritsidwa ntchito kwambiri pa ntchito monga kupanga mapepala osakanizidwa ndi zotsutsana ndi zomatira.Pamwamba pa molekyulu PTFE kwathunthu wokutidwa ndi maatomu fulorini choncho ali ndi khalidwe sanali ndodo, zomwe zimapangitsa kuti zikhale zovuta kugwirizana ndi njira ochiritsira.Njira yotsutsa zomatira imakhala ndi mitundu iwiri ikuluikulu: kuyika mbali za PTFE kapena mapepala pagawo laling'ono ndikuchepetsa kutentha.PTFE zokutirakapena nsalu lacquered laminated ndi galasi pa gawo lapansi.
Nthawi yotumiza: Dec-09-2022