Kuvura Ubuso bwa Polytetrafluoroethylene (PTFE)

Nkumushinga wabigize umwuga ukora PTFE yimyenda yubushyuhe bwo hejuru, Jiangsu Aokai Ibikoresho bishya bizashyiraho uburyo bwo kuvura polytetrafluoroethylene (PTFE).

PTFE iragaragaza ubushyuhe buhanitse kandi buke bwo guhangana nubushyuhe, imiti idasanzwe yo kurwanya ruswa, coefficient de fraisement nkeya hamwe no kwisiga amavuta. Ikoreshwa cyane mubikoresho bya elegitoroniki, imashini, ibikoresho bya shimi, icyogajuru, biomedicine nizindi nzego, bihesha izina rya 'Umwami wa Plastike ' . Nyamara, kubera ubudahangarwa bwimiti nimbaraga nke zubutaka, PTFE biragoye guhuza nibindi bikoresho, bigabanya imikoreshereze yabyo kurwego runaka. Kunoza guhuza hagati ya PTFE nibikoresho bitandukanye, muburyo bukoreshwa muburyo bwo kuzamura ibikorwa bya PTFE. Kubicuruzwa bitandukanye, Aokai Ibikoresho bishya mubisanzwe bikoresha uburyo bukurikira bwo guhindura PTFE.

1. Kuvura imiti itose

Ubuvuzi bwa sodium-naphthalene  ni bumwe muburyo bwiza bwo guhindura PTFE. Hamwe nibikorwa byoroshye kandi bidahenze, nihitamo guhitamo mubikorwa bifatika ku ruganda rwa Aokai ibikoresho bishya bya PTFE.

Ubuvuzi bwa Sodium-naphthalene bukoresha cyane cyane igisubizo cya etching kugirango gikore imiti hamwe na PTFE, ikureho atome zimwe na zimwe za fluor hejuru. Ibi bisiga karubone kandi ikanamenyekanisha amatsinda ya polar nka hydroxyl matsinda, amatsinda ya karubone hamwe nuburinganire butuzuye. Aya matsinda ya polar yongera ingufu zubuso bwa polymer, agabanya impande zifatika kandi atezimbere ubushuhe, bityo PTFE ikava mubudahuza.

2. Uburyo bwo guhuza imashini

Iyo polymers ikorewe imbaraga ziva hanze (urugero, guhonyora, gusya, guterana, nibindi), iminyururu ya macromolecular imeneka kandi ikagira imiti yimiti, harimo imashini yimashini, guhuza imashini, guhuza imashini, guhuza imashini, guhagarika copolymerisation hamwe na polymerisiyasi iterwa no guhangayika. Ibi bizwi nka polymer mehanochemical reaction.

Muguhuza imashini ya chimique, hejuru ya polymer yometse hejuru. Binyuze mu bikorwa bya mikoranike, ubuso bwa polymer bukorwa na mehanodegradation kugirango habeho radicals ya macromolecular yubusa, hanyuma igakora imiyoboro ya covalent hamwe na molekile zifatika, igakora intera ikomeye ihuza kandi igahindura cyane imbaraga zihuza ingingo.

3. Uburyo bwo gushonga cyane

Ihame ryibanze ryo guhindura ubuso bwa PTFE hakoreshejwe ubushyuhe bwo hejuru ni: ku bushyuhe bwo hejuru, morphologie ya kristaline yubuso bwa PTFE irahindurwa, kandi hejuru-yingufu-hejuru, ibikoresho byahujwe byoroshye nka SiO₂ na Al powder. Nyuma yo gukonjesha, urwego rwahinduwe rurimo ibintu bifatika ku buso bwa PTFE. Kubera ko molekile yibikoresho byahujwe byinjiye mubice bya molekuline ya PTFE, guca umubano bisaba kurimbuka hagati, bikaviramo imbaraga nyinshi.

4. Imirasire

PTFE ishyirwa mubikorwa bya polymerizable reaction nka styrene, aside fumaric, methacrylates nibindi, hanyuma ikabikwa na Co-60 . Ibi bikurura imiti ya polymerisiyonike ya monomers hejuru ya PTFE, ikora igipande cya polymer cyoroshye guhuza. Gushushanya kandi bikomeretsa ubuso, byongera aho bihurira kandi byongera imbaraga zo guhuza.

5. Ubuhanga bwo kuvura plasma

Kuvura plasma ni bumwe mu buhanga bwihuta cyane mu iterambere rya PTFE mu myaka yashize.

Intego yikoranabuhanga ni ugushyira icyitegererezo mubikoresho byabugenewe byo kuvura plasma, aho ion bombardment cyangwa iyimikwa isenya imigozi ya molekile cyangwa igatangiza amatsinda akora hejuru ya polymer, igakora hejuru kugirango igere kubihinduka. Ions irashobora kuba inert gaze, imyuka ikora ya chimique cyangwa ibintu byuma. Bombardment hamwe na gaze ya inert irashobora guhindura imiterere yubuso bwa polymer.

Amakuru yavuzwe haruguru yatanzwe na Jiangsu Aokai Ibikoresho bishya byikoranabuhanga Co, Ltd.

Kubisobanuro birambuye, ibyerekanwe hamwe nibisubizo byabigenewe mubicuruzwa byacu byuzuye - harimo imyenda yubushyuhe bwo hejuru ya PTFE, kaseti yubushyuhe bwo hejuru bwa PTFE, umukandara wa meshi wo hejuru wa PTFE, imikandara idafite imashini ihuza imashini, umwenda wa PTFE uruhande rumwe, imikandara ya convoyeur irwanya ubushyuhe bwinshi, umwenda wikirahure wikirahure hamwe nibindi byinshi - nyamuneka twandikire:

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