Vutshunguri bya le henhla bya Polytetrafluoroethylene (PTFE) .

Tanihi muendli wa xihlovo xa xiphurofexinali xa malapi ya mahiselo ya le henhla ya PTFE, Jiangsu Aokai New Materials yi ta nghenisa vutshunguri bya le henhla bya polytetrafluoroethylene (PTFE).

PTFE yina ku tiya ka kahle swinene ka mahiselo yale henhla nale hansi, ku tiya loku hlamarisaka ka ti khemikhali ta corrosion, friction coefficient yale hansi xikan’we na swivumbeko swo titola. Yi tirhisiwa ngopfu eka swa elektroniki, michini, switirhisiwa swa tikhemikhali, swa swihahampfhuka, vutshunguri bya swilo leswi hanyaka na swin'wana, leswi endlaka leswaku yi kuma ndhuma ya 'Hosi ya Tipulasitiki' . Hambiswiritano, hikokwalaho ka ku tsandzeka ka yona ka ti khemikhali xikan’we na energy yale hansi yale henhla, PTFE swa tika ku hlanganisa na switirhisiwa swin’wana, leswi sivelaka ku tirhisiwa ka yona kuya eka mpimo wokarhi. Ku antswisa ku namarhela exikarhi ka PTFE na switirhisiwa swohambana hambana, maendlelo ya tala ku amukeriwa ku ndlandlamuxa ntirho wa le henhla wa PTFE. Eka switirhisiwa swohambana hambana, Aokai New Materials hi xitalo yi tirhisa tindlela leti landzelaka ta PTFE surface modification.

1. Vutshunguri bya Tikhemikhali byo tsakama

Vutshunguri bya tikhemikhali ta sodium-naphthalene  i yin’wana ya tindlela leti tirhaka ta ku cinca ka vuandlalo bya PTFE. Hi endlelo ro olova xikan’we na ntsengo wale hansi, i nhlawulo lowu tsakeriwaka eka vuhumelerisi lebyi tirhaka eka fektri ya PTFE ya Aokai New Materials.

Vutshunguri bya sodium-naphthalene ngopfu ngopfu byi tirhisa etching solution kuva yi endla ti khemikhali na PTFE, ku susa ti athomo tin’wana ta fluorine kusuka ehenhla. Leswi swisiya leyara ya carbonized naswona swi nghenisa mintlawa ya polar yofana na mintlawa ya hydroxyl, mintlawa ya carbonyl na ti unsaturated bonds. Mintlawa leyi ya polar yi engetela matimba yale henhla ya polymer, yi hunguta contact angle xikan’we naku antswisa wettability, xisweswo yi hundzula PTFE kusuka eka non-bondable kuya eka bondable.

2. Ndlela yo Boha ya Mechanochemical

Loko ti polymers ti endliwa matimba yale handle (xikombiso, ku pfotlosiwa, ku sila, ku hlangana, na swin’wana), ti macromolecular chains ti tshoveka naswona ti endla ti khemikhali, kukatsa na mechanodegradation, mechanochemical crosslinking, mechanochemical grafting, block copolymerization na stress-activated polymerization. Leswi switiveka tani hi ti polymer mechanochemical reactions.

Eka bonding ya mechanochemical, vuandlalo bya polymer lebyi funengetiweke hi adhesive bya rhurhumela. Hiku tirhisa mechanochemical action, vuandlalo bya polymer byi hundza eka mechanodegradation kuva byi endla ti macromolecular free radicals, leti endzhaku ti endlaka covalent bonds na ti molecules leti namarhelaka, leswi endlaka leswaku kuva na bonding interface yo tiya naswona swi antswisa swinene matimba ya bonding ya nhlangano.

3. Ndlela yo N’okisa hi Mahiselo ya le Henhla

Nsinya wa xisekelo wa ku cinca swiphemu swa PTFE hiku tirhisa ku n’oka ka mahiselo yale henhla i: eka mahiselo yale henhla, crystalline morphology ya PTFE surface ya cinciwa, naswona switirhisiwa swa high-surface-energy, leswi hlanganisiweke hiku olova swofana na SiO2 na Al powder swa nghenisiwa. Endzhaku ko hola, leyara leyi cinciweke leyingana swilo leswi bohaka ya vumbiwa eka vuandlalo bya PTFE. Leswi ti molecules ta switirhisiwa leswi bohaka ti ngheneke eka surface molecular layer ya PTFE, ku tshoveka ka bond swilava ku onhiwa ka intermolecular, leswi endlaka leswaku kuva na matimba yale henhla ya bonding.

4. Ndlela ya Radiation

PTFE yi vekiwa eka ti reactive polymerizable monomers tofana na styrene, fumaric acid, methacrylates na swin’wana, kutani yi cheriwa Co-60 . Leswi swi hlohletela chemical graft polymerization ya ti monomers eka PTFE surface, ku endla graft polymer layer leyi olovaka ku yi boha. Ku grafting switlhela swi roughens ehenhla, swiendla leswaku ndzhawu ya bonding naswona swiendla leswaku kuva na matimba ya bonding.

5. Thekinoloji ya Vutshunguri bya Plasma

Vutshunguri bya plasma i yin’wana ya tithekinoloji leti hluvukaka hi xihatla swinene eka ku cinca ka vuandlalo bya PTFE eka malembe ya sweswinyana.

Nkoka wa thekinoloji leyi iku veka xikombiso eka xitirhisiwa xo tshungula plasma lexi tinyiketeleke, laha ku buluka ka ti ion kumbe ku vekiwa swi tshoveka swihlanganisi swa ti molecule kutani swi nghenisa mintlawa leyi tirhaka eka vuandlalo bya polymer, leswi endlaka leswaku vuandlalo byi tirha ku fikelela ku cinca. Ti ion tingava tigasi letinga tirhiki, tigasi leti tirhaka hi ti khemikhali kumbe swiaki swa nsimbi. Ku buluka hi tigasi letinga tirhiki swinga cinca xivumbeko xale henhla xa polymer.

Rungula leri nga laha henhla ri nyikiwile hi Jiangsu Aokai New Materials Technology Co., Ltd.

Ku kuma vuxokoxoko bya tipharamitha, swiyimo swa xikombelo na swintshuxo leswi endleriweke ku tirhisiwa ka nxaxamelo wa hina hinkwawo wa swikumiwa — ku katsa na lapi ra mahiselo ya le henhla ya PTFE, thepi ya mahiselo ya le henhla ya PTFE, bandhi ra mesh ra mahiselo ya le henhla ya PTFE, mabandhi lama nga na swirhabyani ya michini yo boha, lapi ra PTFE ra tlhelo rin’we, mabandhi ya conveyor lama lwisanaka na mahiselo ya le henhla, lapi ra fibre ra nghilazi leri tiyiselaka mahiselo ya le henhla na swin’wana — hi kombela u ntshunxeka ku hi tihlanganisa:

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