PTFE inonzi "mambo wemapurasitiki".Roy Planck, baba vefluororesin, vakatanga kudzidza Freon's substitutes paDuPont muUnited States muna 1936. Vakaunganidza chikamu che tetrafluoroethylene ndokuchichengeta mumabhodhoro esimbi, vachigadzirira kuedza kunotevera zuva raitevera, Asi apo kudzvinyirira kuderedza valve. yehumburumbira yakavhurwa zuva raitevera, pakanga pasina gasi rakafashukira.Vakafunga kuti yaibuda mvura, asi pavakayera cylinder vakaona kuti huremu hwainge husina kuremerwa.Vakacheka bhodhoro resimbi ndokuwana hupfu hwakachena huzhinji hwaive polytetrafluoroethylene (teflon).
PTFE inonzi "mambo wemapurasitiki".Roy Planck, baba vefluororesin, vakatanga kudzidza Freon's substitutes paDuPont muUnited States muna 1936. Vakaunganidza chikamu che tetrafluoroethylene ndokuchichengeta mumabhodhoro esimbi, vachigadzirira kuedza kunotevera zuva raitevera, Asi apo kudzvinyirira kuderedza valve. yehumburumbira yakavhurwa zuva raitevera, pakanga pasina gasi rakafashukira.Vakafunga kuti yaibuda mvura, asi pavakayera cylinder vakaona kuti huremu hwainge husina kuremerwa.Vakacheka bhodhoro resimbi ndokuwana hupfu hwakachena huzhinji hwaive polytetrafluoroethylene (teflon).
Hunhu uye zvivakwa:
Iyo mechanic properties yePTFE yakapfava.PTFE ine nhevedzano yeakanakisa kuita zvivakwa:
- High tembiricha kuramba:kushandiswa kwenguva refu kwekushisa kwe200 ~ 260 degrees;
- Kudzikira tembiricha kuramba:achiri kupfava pa -100 madhigirii;
- Corrosion resistance:kupikisa aqua regia uye zvose organic solvents;
- Kuramba kwemamiriro ekunze:hupenyu hwakanyanya hwekukwegura mupurasitiki;
- High lubrication:diki coefficient of friction (0.04) mumapurasitiki;
- Non-viscous:kuderera kwepasi pasi muzvinhu zvakasimba pasina kunamatira chero chinhu;
- Zvisina chepfu:ine physiological inertia uye yakanakisa magetsi emagetsi, yakanakira C-Kirasi insulation zvinhu, bepanhau gobvu layer rinogona kuvharira yakakwira voltage ye1500V.Yakapfava kupfuura aizi.
Iyo friction coefficient yePTFE idiki kwazvo, 1/5 chete yeiyo polyethylene, inova chinhu chakakosha cheperfluorocarbon surface.Uye nekuti iyo inter molecular simba re fluorine-carbon chain yakaderera zvakanyanya, PTFE haina viscous.PTFE inochengetedza yakanakisa michanicha zvinhu munzvimbo yakakura tembiricha ye -196 kusvika 260 ° C. Imwe yehunhu perfluorocarbon polymers ndeyekuti haina brittle pakudziya kwakaderera.PTFE ine high density ye2.14-2.20g / cm3, ine inenge isina kunyura kwemvura, uye kuenzana kwemvura kutorwa kuri pasi pe0.01%.PTFE ndeye yakapfava uye isina simba polymer.Simba rinokwevera pasi pakati pemacromolecules idiki, uye kuoma, kuoma, uye simba idiki.Ichaita deform pasi pekunetseka kwenguva refu.
Vadivelu Comedy Technology Overview
Kumiswa kwepolymerization:mu kettle yepolymerization, mvura inoshandiswa sesvikiro, ammonium persulfate inoshandiswa semutangi, uye dilute hydrochloric acid inoshandiswa se activator, tetrafluoroethylene inoumbwa nekumanikidzwa kwe 0.5-2 MPa uye 40-45 ℃ kuwana zvimedu zvichena, uye tora polytetrafluoroethylene yehupfu ine zvidimbu zvakasiyana-siyana mushure mekugadzira, kukuya, uye kuomesa.
Dispersion polymerization:Chidimbu chidiki che dispersant (ammonium perfluorooctanoate) uye stabilizer (fluorocarbon compound) inowedzerwa kuti itange polymerization ine redox catalyst.Polymerization yakakamurwa kuita yakakwira uye yakaderera kudzvanywa.Iyo yakanyanya kudzvanywa ndeye 2 MPa uye 25 ℃, uye yakaderera pressure ndeye 0.6-0.7 MPa uye 0-38 ℃.A polytetrafluoroethylene polymerization solution inogadzirwa ne dispersion polymerization, uye dispersion resin inowanikwa nekubatanidza, kuomeswa, uye kuongorora.Kuburikidza nekupararira kwepolymerization, pasi pekuita kweion-isina mvura uye zvakasiyana-siyana zvinobatsira, emulsion chena inoumbwa.Iyo emulsion inoputika uye inonangidzirwa kuburikidza neketani yekumisikidza kuti iite yakadzika mvura, ndiko kuti, yakapararira emulsion.
Dispersion resin ine zvirinani kugadzirisa kuita uye kuita kwechigadzirwa.Polytetrafluoroethylene is refractory uye ine kusanaya kwemvura.Saizi yaro yechikamu uye chimiro chechidimbu chine simba rakakosha pakunyungudika kwemvura, zvimiro zvayo zvekugadzirisa uye zvigadzirwa.Musiyano wemhando yemaresini akamiswa uye akaparadzirwa resin imhaka yehukuru hwayo, saizi yekugovera, uye particle morphology.Iyo yekare ine millimeter particle size, nepo iyo yekupedzisira ine submicron saizi (250-350nm) .Huremu hwemamorekuru uye crystallinity yePTFE inoparadzira resin inowanzokwirira kupfuura iya yakamiswa resin, ine crystallinity inosvika 96-98%, uye hupenyu hwekuneta hwekukotama hwakareba ka2300 kupfuura hwemaresini akamiswa.
Iyo particle size yeakaparadzirwa resin inogadzirwa ne emulsion polymerization idiki, particle size yekugovera inonzwisisika, uye particle morphology inodzoreka, saka nekuita kwakanaka kwekugadzirisa uye kuita kwechigadzirwa.
Parizvino, zvingangoita zviviri kubva muzvitatu zvePTFE resins zvinogadzirwa nenzira yekumisa uye chikamu chimwe muzvitatu nenzira yekuparadzira.
Muna 2019, kune akakwana gumi nemaviri emakambani ekugadzira ePTFE epamba ane huwandu hunosvika zviuru zana nemakumi mana ematani / gore, achiverengera anopfuura makumi mana muzana epasi rose ekugadzira.Nekudaro, zvinofanirwa kucherechedzwa kuti China's PTFE yekugadzira huwandu inonyanya kuumba jekiseni giredhi yepakati uye yakaderera-yekupedzisira zvigadzirwa.
China's PTFE kugadzirwa kwehuwandu hwakanyanya kusimba.Makambani matanhatu epamusoro muindastiri anoita 83% yehuwandu hwekugadzira.Mutungamiriri weindasitiri, Dongyue Group, inotora chikamu chimwe muzvitatu chemugove wemusika.
Muna 2019, zvinofungidzirwa kuti iyo yepamba PTFE yakabuda ingangoita zviuru makumi mapfumbamwe emakumi mapfumbamwe emakumi mapfumbamwe emakumi mapfumbamwe emakumi mapfumbamwe emakumi mapfumbamwe emakumi mapfumbamwe emazana, akanyanya mukuumba jekiseni giredhi yepakati uye yakaderera-yekupedzisira zvigadzirwa, uye yakakwira-yekupedzisira PTFE resin yenzvimbo yakadzikira, iyo inotsamira zvakanyanya kune kunze kwenyika. mutengesi wePTFE kunze kwenyika.Muna 2004, vhoriyamu yekuChina yePTFE yakapfuura huwandu hwekutumira kunze, uye huwandu hwayo hwakawedzera zvakanyanya kubva muna 2010 kusvika 2012, uye huwandu hwayo hwekutengesa kunze kwenyika hwakawedzera gore negore.Muna 2010, China's PTFE yeexport volume yakapfuura 20,000 tons kekutanga uye inoramba iri around 20,000 tons / year till now.Kupinza kwevhoriyamu kwakachengetedza chiyero chakagadzikana che5000-6000 matani, iyo 70-80% yePTFE inotengeswa kunze yakakwirira. -performance yakagadziridzwa zvigadzirwa kuti zvienderane nezvinodiwa zvemaindasitiri epasi epamusoro-ekupedzisira PTFE zvigadzirwa.Parizvino, yeChina yepamusoro-soro PTFE inonyanya kupihwa nemakambani ekunze akadaiDaikinmuJapan,DuPontmuUnited States.
Zvishandiso zvikuru zve5G
Nekuenderera mberi kwekuvandudzwa kwe5G yekukurukurirana tekinoroji, kudiwa kwekuenderana kwakakwira frequency uye yakaderera dielectric zvinhu zviri kuwedzera.Zvinhu zveFluorine zvine insulation yakanakisa uye hazvipindirwe nyore nemafungu eredhiyo epamusoro-frequency.Fluoropolymers ine yakanaka yakaderera dielectric zvivakwa uye yakaderera kurasikirwa zvinhu pasi peyakanyanya-frequency mamiriro.Ivo vanogona kupa e-ultra-high frequency uye yakakwirira-kumhanya mashandiro enzvimbo dzedata, shongwe dzekutumira masaini, uye zvemagetsi zvemunhu.Naizvozvo, nekukasira kwe5G, kudiwa kwemusika kwepamusoro-kuita fluoropolymers kuri kuwedzerawo.
Iwo maapplications makuru ndeye 5G kutaurirana yakakwirira-kumhanya tambo, semiconductors, PCB uye antenna zvikamu.
High-frequency uye high-speed cable
Teflon resin inovandudza mashandiro emagetsi emagetsi ekuisa tambo uye jaketi uye inovapa iyo isingaenzaniswi kuchengetedzwa kwemoto.Hunhu uhwu hwakakosha zvikuru kune masisitimu ewaya (senge High-speed cable) yenzvimbo dzenharaunda network (LAN), nzvimbo dzedata, uye mamwe maapplication ekufambisa enhare.Nokudaro, fluoropolymers ichashandiswa pamitsetse yepamusoro-frequency transmission nemabasa akawanda, mavhoriyamu makuru ekutumira data, uye tsanangudzo yakakwirira.
Semiconductor kugadzira
5G inokanganisa kuvandudzwa kweindasitiri yesemiconductor uye kushandura zvinodiwa neindasitiri.PTFE mapolima anoitawo basa rakakosha mukugadzira semiconductor maitiro.
PCB uye antenna zvikamu
Munguva ye5G, mabhodhi edunhu akadhindwa (PCBs) achave akanyanya kutsamira pamhando yepamusoro yefluoropolymer zvinhu, izvo zvinogona kuvandudza kunaka kwe5G kutapurirana.PTFE inoshandiswa kune prepreg zvikamu muPCBs uye antenna masisitimu kuti iwane yakakwirira-frequency yekubatanidza.
Nguva yekutumira: Feb-26-2019