Iyo kaseti ya PTFE ikeneye gukwirakwiza ubushyuhe - urugero, guhuza ibice byingufu zamashanyarazi - igipande gifatika kigomba gukora ibintu bibiri icyarimwe: guhererekanya ubushyuhe no gufata neza. Ongeramo ibyuma byuzuza ubushyuhe (alumina, nitride ya boron, nibindi) bitezimbere ubushyuhe bwumuriro ariko burigihe bigabanya gufatira hamwe.
Ikibazo nugukwirakwiza ubushyuhe mugihe utakaza imbaraga nke zishoboka . Igisubizo kiri mubice bitatu byuzuza: ingano yingingo, imiterere yingingo, nijanisha ryikigereranyo.
Aokai PTFE yateje imbere ubushyuhe PTFE kaseti
Ingano ya Particle - Ubucuruzi Bwiza-Bwuzuye-Ubucuruzi
Ingano ya particle igenga uburyo abuzuza bakora urusobe rutwara ubushyuhe nuburyo ibifatika bihanagura hejuru yubusabane.
1. Ibice byiza (nano to submicron)
Ingaruka yubushyuhe: Ubuso burebure buganisha ku bice byinshi-bihuza aho bihurira, ariko nanone birwanya ubushuhe bwumuriro (fonon ikwirakwiza). Aglomeration ikabije igabanya iterambere ryimyitwarire.
Ingaruka yo gufatira hamwe: Ibice byiza bikurura resin na tackifiers nyinshi, bigakomera. Intangiriro yambere igabanuka cyane. Urujya n'uruza rugabanuka, kugabanya gutonyanga hejuru-imbaraga-PTFE substrates → imbaraga nkeya.
Icyemezo: Ni gake gikoreshwa wenyine. Ultra-nziza yuzuza itanga marginal yumuriro ariko isenya gufatira.
2. Ibice bito (micron kugeza kuri microni mirongo)
Ingaruka yubushyuhe: Ahantu ho guhurira ariko inzira ndende yo gutwara ubushyuhe. Iyo ushyizwe hafi yicyerekezo gifatika, bitanga ibyiza binyuze mu ndege.
Ingaruka ya Adhesion: Ubuso buke bwamamaza adsin nkeya, irinda ubworoherane bufatika. Nyamara, niba ibice bifite umubyimba munini cyangwa muremure kuruta urwego rufatika (mubisanzwe 25-100 mkm), bikomeretsa hejuru ya kaseti, bikagabanya aho bihurira, kandi bigatera ingingo yibandaho.
Icyemezo: Ikoreshwa nka skeleti yambere iyobora, ariko igomba kuba ifite ubunini munsi yububiko.
3. Igisubizo - kuvanga bimodal
Kuvanga ibice bito kandi byiza ku mibare yihariye. Ibinyampeke byiza byuzuza icyuho kiri hagati yutubuto duto, tugera kubipakira hafi. Hamwe nogusohora kwuzuye kwuzuye, gutondekanya bimodal byongera ibice byo guhuza (guhuza neza) cyangwa, ubundi, bigera kumurongo wintego hamwe nuwuzuza bike , hasigara ibyiciro byinshi bikomeza kugirango ubungabunge.
Icyifuzo cya Aokai PTFE : Kubirometero 50 mcm yuburebure, koresha ibice bito bya 20-30 mm bivanze nibice byiza bya 1-5 mm. Ubu buryo bwa bimodal nurufunguzo rwo kuringaniza ibintu.
Ibice bya Morphologiya - Ibintu Byingenzi
Ibituzuye bitari sherfike bihuza mugihe cyo gutwika no gukama, bigira ingaruka ku ndege (Z-icyerekezo) ubushyuhe bwumuriro no gufatira.
1. Umuyoboro wuzuye cyangwa quasi-spherical yuzuza (urugero, alumina spherical)
Ingaruka yubushyuhe: Isotropic. Ibice byegeranye byoroshye mubyerekezo byubugari, nibyiza kubushyuhe bwindege.
Ingaruka zifatika: Ubuso bworoshye ntibubuza gutembera kwa resin. Kurinda ubukonje-gutemba no gutose hejuru. Muburyo bwose buringaniye buringaniye, sisitemu igumana neza - cyane cyane tack yambere.
Inyungu iringaniza: Ibyiza muri rusange. Kugabanya inyungu Z-axis yubushyuhe hamwe nigihombo gito cya adhesion.
2. Ibyuzuye byuzuye (urugero, nitride ya boron, graphene)
Ingaruka yubushyuhe: Ikigereranyo kinini gitanga uburyo bwiza bwo gutwara indege, ariko flake ihuza ugereranije na substrate, itanga bike mu ndege - ikennye kuri kaseti ya PTFE ikenera guhererekanya ubushyuhe.
Ingaruka ya Adhesion: Flakes ikora nka firime yo kugabana, ikabuza gutembera kwa plastike no guca cyane ibice byambere. Impande zikarishye zitera guhangayika, kugabanya imbaraga zishishwa.
Impirimbanyi zingana: Ntibikwiranye na Z-icyerekezo gikenera ubushyuhe, byangiza cyane gukomera. Ntabwo bisabwa nkuwuzuza nyamukuru.
3. Fibrous cyangwa yuzuza bidasanzwe
Ingaruka yubushyuhe: Ikigereranyo kinini gishobora kubaka imiyoboro iyobora ibintu bike.
Ingaruka yo gufatira hamwe: Kongera cyane ububobere bufatika, gukomera PSA ukoresheje imashini ihuza imashini, no gusenya tackness. Impande zikarishye zangiza interineti-PTFE.
Icyemezo: Ni gake gikoreshwa nk'uwuzuza nyamukuru; gusa byongeweho byoroheje nkibikoresho bifasha ibiraro.
Kuzuza Abuzuza - Kubona Percolation Ikibanza Cyiza
Mugihe ibintu byuzuza byiyongera, ubushyuhe bwumuriro buzamuka buhoro buhoro ubanza, hanyuma bigasimbuka cyane kurwego rwa percolation , hanyuma plateaus. Adhesion, ariko, igabanuka ubudahwema.
1. Gutwara ibintu bike (<30 vol%)
Abuzuza ni ibirwa byitaruye muri matrise ikomeza. Ubushyuhe bwumuriro butera imbere cyane. Adhesion ikomeza kuba hafi ya PSA. Agace keza ko kubungabunga tack, ariko inyungu zumuriro ntizihagije.
2. Hagati-hejuru-yipakurura (30-60 vol%) - idirishya rikomeye
Ibice bitangira gukoraho no gukora inzira ziyobora. Ubushyuhe bwumuriro burazamuka cyane. Hagati aho, matrike ikomeza ya resin ihinduka ibice. Ibifatika bihindagurika; gutangira kwambere no gukuramo imbaraga bigabanuka cyane.
Aka ni agace keza. Intego ni ugukorera kumpera yanyuma yurugero rwa percolation - muremure bihagije kugirango uhuze ubushyuhe bwumuriro, hasi bihagije kugirango ugumane icyiciro cya resin gikomeza kugirango kibe cyemewe.
3. Ibikoresho biremereye cyane (> 60 vol%)
Gupakira ibice byinshi bidindiza inyungu zumuriro (plateau). Resin ntishobora kuziba icyuho cyose; Ifishi. Ibifatika bihinduka byumye, bikavunika, kandi hafi ntibisanzwe. Kaseti ihinduka firime yumuriro. Amafaranga asigaye yatakaye rwose.
Icyitonderwa cyihariye kuri kaseti ya PTFE (silicone PSA): Silicone ifite imbaraga zo guhuza imbaraga hamwe no kuzuza nabi kuzuza kurusha acrylic. Ihanganira hasi ntarengwa yuzuza ibintu. Kuzuza cyane bitera gufatira hamwe.
Aokai PTFE amakuru yibyingenzi : Kuri alumina spherical muri silicone PSA, igipimo cya percolation ni hafi 35-45 vol%. Impirimbanyi nziza igerwaho hafi 40-45 vol% hamwe no gukwirakwiza bimodal. Hejuru ya 55 vol%, adhesion iba itemewe kubisabwa byinshi.
Kugirango ugere kumashanyarazi yumuriro uhamye - kuringaniza muri PTFE kaseti yo hejuru yubushyuhe:
Koresha uduce duto duto (20-30 μ m) nka skeleton yambere itwara - itanga imiyoboro yindege hamwe nigihombo gito.
Ongeramo ibice byiza (1-5 μ m) kugirango ukore bimodal ikwirakwizwa - yuzuza icyuho, igabanya ibyuzuye byose bikenewe, ibika matrise.
Komeza kuzuza ibintu byose byapakiye kumurongo wo hagati wo hagati ya percolation (hafi 40-45 vol% kuri alumina sphericale muri silicone PSA).
Gabanya ibyuzuye cyangwa fibrous yuzuza kuri <5 wt% nibikenewe na gato - byangiza tack kandi bitanga inyungu nke binyuze mu ndege.
Igisubizo: kaseti ya PSA ikora neza kandi ifata kandi ikomeza.
Aokai PTFE ikora kaseti ya PTFE yubushyuhe ikoresheje ubu buryo bwa bimodal spherical yuzuza. Turashobora guhuza ubushyuhe bwumuriro hamwe nu rwego rwo gusaba kwawe.
Kurangiza
Kunoza ubushyuhe bwumuriro muri kaseti ya PTFE ifata burigihe irwanya gufatana. Ubwumvikane bwiza buva mubice bya spherical + bimodal ingano yo gukwirakwiza + gupakira gusa percolation . Irinde flake na fibre keretse niba porogaramu yawe ikeneye cyane cyane indege kandi ishobora kwihanganira ibintu bike.
Kubikorwa-bihuza cyane hamwe no gukwirakwiza ubushyuhe, kaseti ya PTFE ikora neza ni igisubizo cyemejwe. Menyesha Aokai PTFE kubisobanuro bihuye nibisabwa bya termal na peel.
Ibikoresho bya tekiniki byatanzwe na Jiangsu Aokai Ibikoresho bishya Ikoranabuhanga Co, Ltd.
Kubisobanuro birambuye hamwe nibisubizo byabigenewe kuri PTFE imyenda yubushyuhe bwo hejuru, kaseti, imikandara ya mesh, nibindi byinshi:
Dukurikije ubunyangamugayo nubunyangamugayo, dutanga igisubizo kimwe cyihariye cyo gukemura hamwe na serivisi yatekerejwe nyuma yo kugurisha.
