PTFE Daim kab xev Adhesion vs Kub: Yuav Ua Li Cas Txhim Kho

Jiangsu Aokai Cov Khoom Tshiab, cov chaw tsim khoom ntawm PTFE cov ntaub nplaum kub kub, qhia cov kev paub txog kev paub rau koj.

PTFE (Teflon) high-temperature daim kab xev feem ntau yuav siv tsis tu ncua nyob rau hauv qhov kub ntawm -196 ℃ to 260 ℃ . Hauv ntau daim ntawv thov, qhov ntsuas kub tsis kam ntawm daim kab xev yog txwv los ntawm cov nplaum txheej  es tsis yog PTFE substrate. Nws qhov kev ua tau zoo ua raws li cov cai ntawm qhov kub thiab txias:

Adhesive kev ua tau zoo poob qis thaum kub nce  Nrog nce kub, cov nplaum maj mam softens, creeps thiab txawm degrades, ua rau txo cohesive zog. Macroscopically, qhov no manifests raws li ib tug poob nyob rau hauv tuav adhesion.

Kev ua tau zoo pib txiav txim siab los ntawm hom nplaum  Cov nplaum sib txawv muaj qhov sib txawv ntawm qhov tsis ua haujlwm kub:

 

Txhawm rau txhim kho lub sijhawm tuav lub sijhawm kub , kev ua kom zoo tshaj plaws yog ua los ntawm peb yam: kev tsim cov nplaum nplaum, kev ua haujlwm hauv substrate, thiab cov qauv sib txuas ntawm lub ntsej muag.

1. Adhesive Layer: Txhim kho qhov tsis muaj zog txuas

·  Xaiv cov nplaum nplaum uas muaj qhov kub thiab txias : Ua kom pom tseeb ntawm silicone siab rhiab nplaum nplaum rau lub sijhawm ua haujlwm kub kub.

·  Kev hloov kho Fluorocarbon : Hloov cov nplaum silicone nrog cov fluorocarbon tebchaw kom nce lub iav hloov kub (Tg) rau 230 ℃. Tom qab 48 teev ntawm kev siv tas li ntawm 260 ℃, qhov adhesion tuav tus nqi tseem tshaj 85%.

·  Qhia crosslinking network : Tsim nano-scale crosslinking tes hauj lwm los txhim kho lub zog cohesive thiab shear tsis kam ntawm cov nplaum txheej ntawm qhov kub thiab txias.

·  Ntxiv cov thermal stabilizers : Muab cov phenol thiab lwm yam thermal stabilizers rau hauv cov mis kom zoo inhibit oxidative degradation nyob rau hauv high kub.

2. Substrate Layer: tsa lub zuag qhia tag nrho qhov kub thiab txias tsis kam

·  Nano-filler hloov kho : Ntxiv nano silica, boron nitride nanotubes thiab lwm yam nanoparticles rau hauv PTFE substrate los tsim cov ntsiab lus crosslinking lub cev. Qhov kub distortion kub tuaj yeem nce los ntawm 20-30 ℃, thaum tswj ntau dua 90% ntawm qhov pib adhesion ntawm 260 ℃.

·  Molecular crosslinking kev kho mob : Crosslink PTFE molecular chains nqa cov kev pabcuam txuas mus ntxiv mus txog 300 ℃.

·  Fiber reinforcement : Ntxiv 25% iav fiber ntau los yog carbon fiber los boost creep resistance los ntawm 300%, ua kom siv tas li mus txog 280 ℃.

3. Interface & Tus Qauv Tsim: Txhim khu kev ruaj ntseg

·  Substrate deg kev kho mob : Siv plasma kev kho mob los yog tshuaj etching ntawm PTFE nto kom roughness thiab deg kev ua si, ntxiv dag zog rau interfacial adhesion thiab tsis txhob delamination ntawm kub.

·  Ntxiv cov txheej txheem nruab nrab : Ntxig ib txheej txheej polyimide (PI) cais ntawm PTFE substrate thiab nplaum los thaiv cov nplaum nkag thiab tsiv teb tsaws nyob rau hauv qhov kub thiab txias, txhim kho tag nrho cov qauv kev ruaj ntseg.

·  Optimize composite structure : Txais cov txheej txheem ntau txheej: PTFE txheej + reinforcing substrate + high-temperature ruaj khov txheej , kom sib npaug kub ua hauj thiab nplaum ua tau zoo.

·  Reserve thermal expansion clearance : Lub linear expansion coefficient ntawm PTFE yog li ntawm 10 npaug ntawm cov hlau.

Tuav qhov sib txawv ntawm 0.15-0.3 hli  hauv cov qauv tsim kom tso cov thermal stress zoo.

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

Yog tias koj xav tau cov ntaub ntawv ntxiv ntawm cov txheej txheem tsis zoo, daim ntawv thov scenarios thiab cov kev daws teeb meem rau peb cov khoom lag luam tag nrho - suav nrog PTFE high-temperature npuag, PTFE high-temperature tape, PTFE high-temperature mesh belt, seamless fusing machine belt, single-sided PTFE fabric, high-temperature resistant conveyor belt thiab high-temperature contact us.

·  Xov tooj: Mr. Guo +86 18944819998

·  Xov tooj: Mr. Liu +86 13705266308

Peb ib txwm ua raws li kev lag luam lub tswv yim ntawm kev tshaj lij thiab kev ncaj ncees, thiab siv zog los muab koj nrog ib qho kev lag luam daws teeb meem thiab xav txog kev pab cuam tom qab muag.