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Polymerization ndi processing wa PTFE

The monomer wa PTFE ndi tetrafluoroethylene (TFE), ndi kuwira mfundo -76.3 digiri Celsius.Zimaphulika kwambiri pamaso pa okosijeni ndipo zimatha kufananizidwa ndi mfuti.Choncho, kupanga kwake, kusungidwa ndi kugwiritsidwa ntchito m'makampani kumafuna chitetezo chokhwima kwambiri, zotulutsazo zimafunikanso kuyang'aniridwa, zomwe ndi chimodzi mwazinthu zazikulu za PTFE mtengo.TFE kawirikawiri amagwiritsa ntchito ufulu kwakukulu kuyimitsidwa polymerization mu makampani, ntchito persulfate monga initiator, kutentha anachita kungakhale pakati pa 10-110 madigiri Celsius, njira imeneyi angapeze mkulu kwambiri maselo kulemera PTFE (ngakhale kungakhale pa 10 miliyoni), palibe unyolo zikuoneka. kusintha kumachitika.

Popeza malo osungunuka a PTFE ndi okwera kwambiri, omwe ali pafupi ndi kutentha kwa kutentha, ndipo misa yake ya maselo si yaying'ono, ndizosatheka kukwaniritsa mlingo wosungunuka wosungunuka mwa kungodalira kutentha ngati ma polima wamba a thermoplastic.Kodi tepi ya Teflon kapena chubu la Teflon amapangidwa bwanji?Pankhani ya kuumba, PTFE ufa nthawi zambiri amatsanuliridwa mu nkhungu, ndiyeno kutenthedwa ndi kukakamizidwa kuti sinter ufa.Ngati extrusion ikufunika, mankhwala a hydrocarbon ayenera kuwonjezeredwa ku PTFE kuti athandize kugwedeza ndi kuyenda.Kuchuluka kwa mankhwala a hydrocarbon awa kuyenera kuwongoleredwa mkati mwamitundu ina, apo ayi ndizosavuta kuyambitsa kupanikizika kwambiri kapena kuwonongeka kwazinthu zomalizidwa.Pambuyo pa mawonekedwe ofunidwa, mankhwala a hydrocarbon amachotsedwa ndi kutentha pang'onopang'ono, ndiyeno amatenthedwa ndi kutenthedwa kuti apange chomaliza.

Kugwiritsa ntchito PTFE
Chimodzi mwazinthu zazikulu zogwiritsira ntchito PTFE ndi ngati zokutira.Kuchokera pa poto yaying'ono yopanda ndodo kunyumba mpaka khoma lakunja la cube yamadzi, mutha kumva zamatsenga za zokutira izi.Ntchito zina ndi tepi yosindikizira, chitetezo chakunja kwa waya, mbiya yamkati yosanjikiza, zigawo zamakina, labware, ndi zina zotero. Ngati mukufuna chinthu chogwiritsidwa ntchito pazovuta, ganizirani, zikhoza kukhala ndi zotsatira zosayembekezereka.


Nthawi yotumiza: Aug-29-2022