Dab tsi cuam tshuam rau lub neej ntawm Teflon daim kab xev?

Lub neej ntev ntawm Teflon daim kab xev tsis kho, txij li ob peb lub hlis mus rau ntau xyoo. Nws yog feem ntau cuam tshuam los ntawm plaub pawg ntawm yam tseem ceeb: cov khoom siv thiab kev tsim khoom ntawm cov khoom nws tus kheej, kev siv ib puag ncig, kev siv tiag tiag, thiab kev tsim kho thiab kev tu txhua hnub. Ntawm cov no, kev sib txhuam thiab hnav, qhov kub thiab txias, thiab cov nplaum nplaum yog peb qhov tseem ceeb tshaj plaws. Cov hauv qab no yog cov ncauj lus kom ntxaws ntxaws los ntawm qhov loj me, nrog rau kev siv lub neej ntev rau cov xwm txheej sib txawv kom nkag siab ntau dua:

 

I. Cov khoom siv thiab cov txheej txheem tsim khoom
Qhov zoo ntawm Teflon daim kab xev ncaj qha txiav txim siab nws "qhov tseem ceeb lifespan." Txawm tias nyob rau hauv cov xwm txheej zoo, cov khoom lag luam tsis zoo yuav muaj lub neej luv dua li cov khoom zoo tshaj:

Base Material Hom thiab Zoo
Teflon daim kab xev los ntawm ob hom: ntshiab Teflon puag khoom thiab iav fiber reinforced Teflon puag khoom. Lub tom kawg suav nrog cov iav fiber ntau rau hauv Teflon txheej, txhim kho kev puas tsuaj, tsim kua muag, thiab lub zog tensile. Nws yog feem ntau siv rau hauv cov ntawv thov kev lag luam thiab muaj lub neej ntev 2-5 zaug ntev dua li cov khoom siv ntshiab Teflon. Lub thickness ntawm Teflon txheej ntawm lub hauv paus khoom kuj muaj feem xyuam rau lifespan; lub thicker lub txheej (piv txwv li, saum toj no 50μm), lub zog muaj zog abrasion kuj. Cov txheej nyias nyias (hauv qab 20μm) tau yooj yim hnav los ntawm.

 

Adhesive Layer Performance thiab Adhesion
Cov nplaum nplaum yog qhov tseem ceeb rau kev sib txuas ntawm daim kab xev thiab cov khoom sib txuas. Cov nplaum nplaum tseem ceeb yog cov roj hmab silicone (zoo kub tsis kam, haum rau -} 60 ~ 260℃) thiab acrylic nplaum txheej (muaj zog adhesion ntawm chav tsev kub, tab sis tsuas yog tiv taus ib ncig ntawm 80℃). Lub thickness, adhesion, thiab tsis kam mus rau ntau yam xov xwm ntawm cov nplaum txheej ncaj qha cuam tshuam qhov kev pheej hmoo ntawm detachment - adhesion tsis zoo thiab raug rau corrosion yuav ua rau daim kab xev tev tawm ntxov ntxov, xaus nws lub neej tam sim ntawd. High-quality tapes muaj ib tug nruj bonded nplaum txheej rau lub substrate, tiv thaiv delamination.

 

Kev tsim khoom
Txheej txheej uniformity, cov txheej txheem kev sib txuas ntawm substrate thiab cov nplaum txheej, thiab ntug txiav precision tag nrho cuam tshuam rau lifespan: tapes nrog uneven coatings yog feem ntau hnav nyob rau hauv tej qhov chaw thinner; Cov txheej txheem kev sib txuas tsis zoo tuaj yeem ua rau delamination ntawm substrate thiab cov nplaum txheej; tapes nrog ntxhib npoo yog yooj yim torn thiab tev.

 

II. Environmental Factors Thaum Teflon nws tus kheej boasts zoo heev kub kuj, corrosion kuj, thiab huab cua tsis kam, qhov sib cuam tshuam ntawm cov nplaum txheej, substrate, thiab nplaum txheej yog qhov tsis muaj zog ntawm ib puag ncig kev laus. Qhov hnyav ntawm ib puag ncig, qhov kev laus sai dua:

 

Kev Siv Kub: Lub sijhawm ntev - qhov ntsuas kub tsis kam ntawm Teflon substrate yog 260 degree, thiab nws tuaj yeem tiv taus 300℃rau lub sijhawm luv. Txawm li cas los xij, qhov ntev ntawm qhov kub siab tshaj 280℃yuav ua rau qeeb aging ntawm substrate, txo qis hardness, thiab softening thiab delamination ntawm cov nplaum txheej. Yog hais tias qhov kub thiab txias poob qis dua -60 degree, silicone roj hmab nplaum txheej yuav nkig, nws adhesion yuav poob sharply, thiab nws yuav yooj yim detach. Kev hloov pauv ntawm qhov kub thiab txias (hloov ntawm qhov kub thiab txias) yog qhov ua rau tuag taus ntau dua - qhov sib txawv ntawm thermal expansion thiab contraction ntawm cov substrate thiab nplaum txheej ua rau micro-khoov tshwm ntawm qhov sib txuas, tso dej thiab plua plav nkag mus, thaum kawg ua rau delamination thiab ntug nqa.

 

Ib puag ncig nruab nrab thiab av noo: Thaum Teflon substrate tiv taus rau feem ntau acids, alkalis, organic solvents, thiab roj, cov nplaum txheej tsis. Cov kuab tshuaj muaj zog (xws li acetone thiab toluene), muaj zog acids thiab alkalis yuav corrode silicone roj hmab / acrylic nplaum txheej, ua rau nws ua tsis tiav. Cov av noo siab (qhov txheeb ze av noo> 85%) lossis qhov ntev ntev ntawm cov dej / chav dej yuav txo qhov adhesion ntawm cov nplaum nplaum thiab cov nplaum nplaum, tshwj xeeb tshaj yog thaum muaj qhov sib txawv ntawm qhov sib txuas, vim dej tuaj yeem nkag rau hauv thiab ua rau cov nplaum nplaum. Sab nraum zoov UV hluav taws xob yuav ua rau photoaging ntawm cov nplaum txheej, maj mam txo adhesion. Rau kev siv sab nraum zoov nkaus xwb, Teflon daim kab xev nrog ntxiv UV- cov tshuaj tiv thaiv yuav tsum tau xaiv.

 

Plua plav thiab impurities: Nyob rau hauv ib puag ncig plua plav, cov khoom zoo tuaj yeem nkag mus rau qhov khoob ntawm daim kab xev thiab qhov sib txuas los yog ua raws li daim kab xev. Qhov no txo ​​cov adhesion thiab, thaum lub sij hawm kev sib txhuam, tsim abrasive hnav, accelerating lub hnav ntawm Teflon txheej.

 

III. Daim Ntawv Thov Kev Pabcuam Hauv kev siv hauv kev lag luam, qhov tsis ua haujlwm ntawm Teflon tapes feem ntau tshwm sim los ntawm kev hnav thiab tsim kua muag vim muaj ntau yam kev ua haujlwm. Qhov sib txawv ntawm kev siv zog hauv kev ua haujlwm sib txawv tuaj yeem ua rau kev txiav txim siab qhov sib txawv hauv lub neej:

 

Kev sib txhuam thiab hnav hnyav
Qhov no yog qhov tseem ceeb tshaj plaws ntawm kev ua haujlwm zoo tshaj plaws. Yog tias daim kab xev siv rau hauv daim ntawv thov xws li cov menyuam, cov hlua khi, thiab cov tshuab ua kom sov, qhov twg nws yuav tsum tau rub tawm cov khoom siv / cov khoom siv rau lub sijhawm ntev, cov qib hnav ncaj qha txiav txim siab nws txoj sia:

 

Cov yam ntxwv ntawm cov khoom siv: Kev sib txhuam ntawm cov khoom tawv tawv thiab cov khoom siv abrasive (xws li xuab zeb, gravel, thiab hmoov metallurgy cov ntaub ntawv) yog ntau dua li cov ntaub ntawv mos, du. Cov ntaub nplaum nplaum (xws li cov kua nplaum thiab cov yas granules) adhering rau daim kab xev kuj tseem yuav ua rau Teflon txheej thaum ntxuav vim qhov nyuaj scraping.

 

Kev sib txhuam ceev thiab siab: Siab- nrawm, siab- kev sib txhuam siab ua rau qhov kub thiab txias ntawm daim kab xev thiab ua kom cov txheej txheej hnav. Piv txwv li, cov menyuam conveyors taug kev ntawm ob peb meters hauv ib feeb kev hnav 3 mus rau 10 npaug sai dua li qis - nrawm nrawm sib txhuam.

 

Cov Kev Nyuaj Siab: Cov nplaum nplaum uas raug txuas mus ntxiv, compression, thiab tearing yuav ua tsis tau sai. Kev ncab ntau dhau yuav ua rau Teflon substrate tawg, ua rau kev sib cais ntawm cov nplaum txheej los ntawm substrate. Ntug tearing (xws li los ntawm cov khoom snagging) yog feem ntau ua rau ntug curling; ib zaug cov npoo curl, qhov sib txawv yuav nrawm nrawm, nws thiaj li ua rau tag nrho cov yob rau detach. Ntev compression yuav deform lub nplaum txheej, txo nws cov nplaum nplaum.

 

Kev siv zaus: Cov nplaum nplaum siv tsis tu ncua rau 24 teev hauv ib hnub muaj kev laus zuj zus thiab hnav ntawm ob qho tib si substrate thiab nplaum txheej, ua rau lub neej luv dua li cov ntaub nplaum siv tsis tu ncua. Piv txwv li, lub neej ntev ntawm cov ntaub nplaum siv tsis tu ncua (ob peb teev hauv ib hnub) los ntawm lub tshav kub sealer tuaj yeem ncav cuag 1-2 xyoos, thaum lub neej ntawm kev ua haujlwm tsis tu ncua ntawm cov menyuam conveyor siv yuav tsuas yog 3-6 lub hlis.

 

IV. Kev tsim kho thiab Kev Kho Txhua Hnub Rau Teflon daim kab xev ntawm qhov sib npaug, kev tsim kho tsis raug yog thawj tus tib neeg- ua rau ua tsis tiav ntxov, thaum kho kom zoo tuaj yeem txuas ntxiv nws lub neej kev pabcuam:

 

Substrate Surface Treatment Ua ntej Kev Tsim Kho: Yog tias cov chais, cov ntawv hlau, lossis cov ntawv uas yuav tsum tau pasted muaj roj, plua plav, xeb, lossis dej stains, txheej nplaum tsis tuaj yeem ua kom nruj rau saum npoo, txo qhov adhesion ntau dua 80%, ua rau nws yooj yim heev rau daim kab xev tev tawm tom qab. Qhov saum npoo yuav tsum tau ntxuav nrog cawv, acetone, lossis lwm yam tshuaj ntxuav thiab tso cai kom qhuav tag ua ntej muab tshuaj txhuam.

 

Kev tsim kho kom zoo thaum lub sij hawm Pasting: Yog tias huab cua npuas, wrinkles, los yog qhov sib txawv loj heev tshwm sim thaum lub sij hawm pasting, dej thiab plua plav tuaj yeem nkag mus rau hauv cov npuas huab cua, ua rau cov nplaum tsis ua hauj lwm; wrinkles ua rau muaj kev ntxhov siab tsis sib xws ntawm lub substrate, ua rau nws yooj yim rau tawg; thiab qhov khoob tuaj yeem dhau los ua qhov pib ntawm tev.

Ntug thiab Sealing Treatment: Cov npoo ntawm Teflon daim kab xev yog cov ntsiab lus tsis muaj zog. Yog tias tsis kaw (xws li, nrog Teflon ntug sealant lossis siab - daim kab xev), cov npoo tau yooj yim snagged los ntawm cov ntaub ntawv thiab corroded los ntawm noo noo, ua rau tev. Thaum peeling tshwm sim, hnav thiab tsim kua muag yuav nce sai.