Fluoropolymers Fabrication Techniques and Applications

Ma fluoropolymer amalonda amachokera ku TFE, VDF, komanso pang'ono CTFE.Zitsanzo za comonomers ndi PMVE, PEVE, PPVE, HFP, CTFE, ndi PFBE.Zotsatira zakusintha kwa fluorine m'malo mwa haidrojeni mu polima kumaphatikizanso kukana kwamankhwala ndi zosungunulira, kukulitsa mphamvu zamagetsi monga kutsika kwa dielectric pafupipafupi, kugundana kwapang'onopang'ono, malo osungunuka okwera, kuchulukira kwa photostability ndi kukhazikika kwamafuta, kulimba kwa malawi, komanso kufooka kwamakina. katundu.Makhalidwe apamwamba amatheka pamene polima ali ndi fluorinated kwathunthu.

Njira Zopangira

Kupatulapo ma fluoropolymers awiri, PVF ndi PTFE, utomoni wotsalawo womwe wafotokozedwa m'mutu uno ukhoza kusinthidwa ndi njira zokhazikika zosungunulira monga jekeseni, kusuntha ndi kupukuta, kutulutsa ndi kuzungulira.Zida zopangira ma fluoropolymers ziyenera kupangidwa kuchokera kuzitsulo zosagwirizana ndi dzimbiri chifukwa cha zowononga zomwe zingapangidwe pamene ma fluoropolymers atenthedwa pamwamba pa malo osungunuka.Kukhuthala kwamphamvu kwa ma resin awa kungafunike ufa wochulukirapo komanso zida zoyezera kuthamanga kwambiri.

PTFE imakonzedwa pogwiritsa ntchito njira zopangira ufa wachitsulo momwe preform imawumbidwa ndi "sintered."Kuponderezana kungagwiritsidwenso ntchito kupanga magawo a PTFE.PTFE dispersions ntchito ndi njira zofanana zokutira ena.Matani extrusion imene PTFE ndi blended ndi hydrocarbon, pamaso akamaumba ndi preform, ntchito mosalekeza kupanga PTFE mu machubu, matepi, ndi kutchinjiriza waya.The hydrocarbon ndi vaporized mbali sintered.

PVF imamwazikana mu polar latent solvent monga dimethyl acetamide ndipo imasungunuka ngati plastisol, yotsatiridwa ndi kuchotsa zosungunulira ndi kuyanika.

Mapulogalamu

Katundu wa ma fluoropolymers omwe adayambitsa kugwiritsa ntchito amaphatikiza kukana kwamankhwala, kukhazikika kwamafuta, zinthu za cryogenic, kugunda kocheperako, mphamvu yochepa yapamtunda, kutsika kwa dielectric pafupipafupi, kuchuluka kwamphamvu komanso kukhazikika kwapamwamba, komanso kukana moto.Fluoropolymers amagwiritsidwa ntchito ngati liners (process surface) chifukwa chokana kumenyana ndi mankhwala.Amapereka njira zokhazikika, zochepetsera, komanso zotsika mtengo kuposa zitsulo zakunja kuti zigwiritsidwe ntchito pakutentha kwambiri popanda kuyambitsa zonyansa.Mphamvu zamagetsi zimapangitsa kuti ma fluoropolymers akhale ofunika kwambiri pamagetsi ndi magetsi ngati ma insulators, mwachitsanzo, FEP mu kulumikizana kwa data.

M'zida zamagalimoto ndi muofesi, zida zamakina a fluoropolymers ndizopindulitsa pama bere otsika kwambiri komanso zosindikizira zomwe zimakana kuwukiridwa ndi ma hydrocarbon ndi madzi ena.Pokonza chakudya, Food and Drug Administration idavomereza magiredi a fluoropolymer ndi zida zopangira zida chifukwa chokana mafuta ndi zinthu zoyeretsera, komanso zotsutsana ndi ndodo komanso kugundana kochepa.M'nyumba, ma fluoropolymers amagwiritsidwa ntchito ngati zokutira zopanda ndodo zophikira ndi zida.Zolemba zachipatala monga zigamba za opaleshoni ndi zolumikizira mtima ndi mtima zimadalira kukhazikika kwa nthawi yayitali kwa ma fluoropolymers komanso mphamvu zawo zotsika komanso zosakanizidwa ndi mankhwala.

Kwa ma eyapoti, mabwalo amasewera, ndi zina, nsalu zamagalasi zokutidwa ndi PTFE zimapangidwa kuti zikhale zofolera ndi zotchingira.PTFE imapereka kukana bwino kwa nyengo, kuphatikiza kukhudzana ndi kuwala kwa ultraviolet padzuwa, kukana lawi poteteza chitetezo, komanso kutsika kwamphamvu kwapamtunda kwa nthaka, komanso kuyeretsa kosavuta.