Yuav ua li cas PTFE daim kab xev txiav kawg ntsej muag qauv cuam tshuam Adhesive Oozing thiab Ntug Lifting

Thaum twg PTFE high-temperature daim kab xev yog siv rau lub tshav kub sealer, qhia cov menyuam, los yog kev sib khi nto, muaj ob yam teeb meem tshwm sim ntawm cov npoo: nplaum oozing (kua nplaum seeping tawm ntawm ntug txiav) thiab ntug lifting (kab xev ntug tev tawm ntawm lub substrate).

Cov kev tsis zoo no feem ntau rov qab mus rau ib qhov chaw: qhov zoo ntawm cov txheej txheem slitting (txiav). Cov qauv ntawm lub ntsej muag kawg - txawm tias du lossis ntxhib, huv lossis delaminated - txiav txim siab seb cov nplaum ua li cas ntawm ntug.

Aokai PTFE tswj slitting zoo los tiv thaiv cov teeb meem no. Phau ntawv qhia no piav qhia txog qhov kawg ntawm lub ntsej muag morphology ua rau oozing thiab lifting, thiab dab tsi ib tug zoo slit daim kab xev yuav tsum zoo li.

Tus qauv ntawm PTFE daim kab xev hla ntu

Txhawm rau kom nkag siab tias qhov kawg ntawm lub ntsej muag cuam tshuam li cas rau kev ua tau zoo, ua ntej rov qab rov qab daim kab xev cov qauv. PTFE high-temperature daim kab xev feem ntau muaj xws li:

• Fiberglass ntaub substrate (reinforcement)

• PTFE txheej (non-stick txheej)

• Silicone siab-rhiab nplaum nplaum txheej (sab khiab mis)

Slitting yog hais txog longitudinally txiav cov laminated composite rau hauv cov yob yob. Lub morphology ntawm lub ntsej muag kawg - du los yog ntxhib, ncaj los yog wavy - thiab qhov ntev ntev (flatness, verticality, adhesive shortage lossis stringing) ua rau ob qho tsis xws luag.

Yuav ua li cas txiav kawg ntsej muag ua rau Adhesive Oozing

Adhesive oozing txhais tau hais tias tsis xav pom ntawm cov nplaum los ntawm daim kab xev ntug, kis kab mob sib koom ua haujlwm lossis daim kab xev rov qab. Lub ntsej muag txiav kawg exerts ncaj qha.

1. rub thiab stringing nyhuv los ntawm kev txiav

Yog hais tias lub slitting hniav yog npub los yog lub kaum sab xis txiav tsis tsim nyog, cov hniav yuav rub thiab ncab lub saj zawg zog silicone PSA es tsis txhob txiav nws huv si. Qhov no ua rau:

• Microscopic kua nplaum filaments thiab burrs: Cov nplaum nplaum tawm ultra-fine kua nplaum threads los yog flakes protruding ntawm daim kab xev. Cov 'glue whiskers' tau yooj yim hloov thiab tawg thaum ua los yog cia, tsim kom pom cov nyhuv ntawm cov nplaum oozing.

• Adhesive tsiv teb tsaws mus rau cov npoo: Lub zog rub thaum lub sij hawm slitting drags nplaum rau ntawm lub ntsej muag kawg thiab txawm tias hla ntu ntawm substrate. Thaum daim kab xev raug mob rau hauv ib lub yob, cov nplaum extruded sticks rau PTFE rov qab ntawm txheej uas nyob ib sab. Thaum unwinding, residual kua nplaum tshwm nyob rau ntawm ntug - classic oozing tsis ua hauj lwm.

2. Cov nyhuv Extrusion los ntawm lub ntsej muag tsis sib xws

Lub ntsej muag tsis zoo tsis tu ncua (dawb qhov chaw, protrusions, inclined dav hlau) dais qhov txawv txav ntawm lub siab ntawm cov ntsiab lus thaum cov kab xev nruj nreem kaw rau hauv yob. Silicone PSA yog viscoelastic - nws nkag mus rau hauv lub siab ruaj khov, tshwj xeeb tshaj yog thaum lub sij hawm kub cia lossis thauj. Lub siab no ua rau cov nplaum nplaum ntws los ntawm kev kub siab protrusions mus rau qhov tsis tshua muaj siab, nyem tawm ntawm lub ntsej muag kawg.

3. Ntug ntug foob ntawm cov nplaum thiab substrate

Qhov zoo tshaj plaws slitting muab ib tug flush cross-section integrating tag nrho cov khaubncaws sab nraud povtseg. Cov slitting tsis zoo yuav ua rau delamination thiab sib cais ntawm cov nplaum thiab fiberglass, los yog kab noj hniav ntawm ntu ntu, rhuav tshem cov txheej txheem kaw. Thaum rhuab, softened adhesive sees sab nraud los ntawm cov micro-channels. Thaum qhov kub thiab txias (piv txwv li, cua sov sealers siab tshaj 200 ° C), cov nplaum nplaum nplaum nplaum nplaum, thiab cov ntsej muag ntxhib ua rau muaj kev pheej hmoo ntawm oozing.

Yuav Ua Li Cas Txiav End Face Ua Edge Lifting

Edge lifting yog hais txog kev sib cais ntawm cov kab xev los ntawm cov khoom sib txuas hauv qab nro lossis cua sov tom qab thov.

1. Thinned ntug nplaum txheej - tsis muaj zog bonding cheeb tsam

Cov nplooj npub los yog qhov tsis tsim nyog slitting ua rau cov nyhuv compression-txiav: cov hniav nyem cov khoom ib sab es tsis hla nws kom huv si. Adhesive ntws tom qab nyob rau hauv compression, ua rau nyias nyias los yog txawm tias tsis muaj nplaum nplaum ntawm ntug sab nraud. Cov cheeb tsam marginal no muaj qis dua kev sib txuas ntawm cov kab xev, yog li ntug nqa pib ntawm no nyob rau hauv me me los yog thermal stress.

2. Substrate burrs thiab delamination - wedging nyhuv

PTFE daim kab xev substrate muaj iav fiber ntau. Kev txiav tsis raug rub tawm cov fiberglass filaments es tsis txhob txiav lawv kom huv si, tawm hauv cov fiberglass nruj ntawm lub ntsej muag kawg. Thaum lub sij hawm lamination, cov tawv burrs prop up the tape edge, form me me gap between the adhesive surface and workpiece - thaiv tag nrho kev sib cuag thiab ua rau lifting.

Yog hais tias slitting ua rau delamination ntawm PTFE txheej thiab fiberglass ntawm ntug, mismatched thermal expansion tus nqi tsim sab hauv kev ntxhov siab tom qab cua sov, ncaj qha tev tawm ntawm substrates.

3. Serrated los yog notched npoo - kev nyuaj siab concentration

Pom pom serrations thiab notches ntxiab huab cua thiab tiv thaiv tag nrho saum npoo tom qab sib txuas. Txawm tias macroscopically tiaj tus npoo nrog micro-unevenness kev tsis sib xws thermal expansion thaum rhuab, tearing lub bonding interface thiab triggering cascading ntug lifting.

4. Kev kis kab mob los ntawm extruded nplaum - txo ntug tack

Severely oozed adhesive tuaj yeem rov ua raws li daim kab xev kawg, hloov cov tshuaj lom neeg ntawm marginal nplaum txheej. Cov roj stains pauv los ntawm cov hniav kuj txo qis ntug tackiness - txhua yam ua raws li kev txhawb nqa.

Standard End Face Requirements - Yuav Ua Li Cas Tiv Thaiv Oozing thiab Lifting

Txhawm rau tiv thaiv cov nplaum oozing thiab ntug lifting hauv paus, lub ntsej muag kawg yuav tsum ua raws li cov hauv qab no:

1. Morphology - du thiab ntws

• Cov iav fibers txiav kom huv si tsis raug.

• Adhesive txheej, substrate, thiab PTFE txheej tsim ib qho kev sib xyaw ua ke.

• Tsis muaj cov nplaum nplaum, nplaum nplaum, lossis delamination.

2. Regularity - ncaj thiab zoo ib yam

• Ncaj kawg lub ntsej muag nrog tsawg waviness thiab inclination.

• Ua kom muaj kev sib txawv ntawm kev ntxhov siab thaum raug mob rau hauv yob.

Lub ntsej muag du, zoo li qub, tsis muaj kev puas tsuaj rau lub ntsej muag ua raws li 'seal' rau daim kab xev. Nws kaw cov nplaum txheej tiv thaiv kev nkag mus nkag thiab lav ua tiav kev sib koom ua ke ntawm txhua millimeter ntawm ntug - tshem tawm oozing thiab nqa ntawm qhov chaw.

Summary - Slitting Quality ncaj qha cuam tshuam rau daim kab xev kev ua tau zoo

Aokai PTFE siv cov cuab yeej precision slitting nrog cov hniav ntse thiab cov ces kaum zoo los tsim cov kab xev uas huv, du, thiab tsis muaj qhov tsis xws luag. Yog tias koj tab tom ntsib ntug oozing lossis nqa nrog lwm cov kab xev, slitting zoo yuav yog qhov ua rau. Tiv tauj peb los tham txog koj daim ntawv thov.

Cov ntsiab lus saum toj no yog muab los ntawm Jiangsu Aokai Tshiab Materials Technology Co., Ltd.

Yog tias koj xav paub ntau ntxiv txog cov ncauj lus kom ntxaws, daim ntawv thov scenarios thiab cov kev daws teeb meem rau peb cov khoom lag luam tag nrho, suav nrog PTFE high-temperature fabrics, PTFE high-temperature tapes, PTFE mesh conveyor bets, seamless bonding machine bets, single-sided PTFE fabric, high-temperature resistant conveyor fabrics and high-temperature contact:

• Mr. Guo: +86 18944819998

• Mr. Liu: +86 13705266308

Peb ib txwm txhawb nqa lub tswv yim ntawm kev tshaj lij thiab kev ncaj ncees, thiab tau cog lus los muab kev daws teeb meem rau koj ib leeg thiab kev xav zoo.