PTFE Tape Adhesion vs Ubushushu: Ukuphucula njani

I-Jiangsu Aokai New Materials, umenzi womthombo oqeqeshiweyo we-PTFE tape yobushushu obuphezulu, wabelana nawe ngolwazi lobuchwephesha.

I-PTFE (Teflon) iteyiphu yobushushu obuphezulu ingasetyenziswa ngokuqhubekayo kwiqondo lobushushu le-- 196℃ ukuya kwi-260℃ . Kwizicelo ezininzi, umda wokumelana nobushushu beteyiphu uthintelwe ngumaleko wokuncamathelisa  kune-PTFE substrate. Ukusebenza kwayo kulandela imithetho ecacileyo enxulumene nobushushu:

Ukusebenza okuncamathelayo kuyehla njengoko iqondo lobushushu linyuka  Ngokunyuka kwamaqondo obushushu, into encamathelayo iyathamba ngokuthe ngcembe, irhubuluze ide ithobe, nto leyo ekhokelela ekuncitshisweni kokuqina okubambeneyo. I-Macroscopically, oku kubonakala njengokuhla ekubambeni ukubambelela.

Umda wokusebenza ugqitywe luhlobo lokuncamathelisa  Iincamathelisi ezahlukeneyo zineqondo lobushushu bokusilela okwahlukeneyo:

 

Ukuphucula ixesha lokubamba ubushushu obuphezulu , ukulungiswa kuqhutyelwa ikakhulu kwiinkalo ezintathu: ukwakhiwa kwe-adhesive, ukusebenza kwe-substrate, kunye ne-interfacial bonding structure.

1. I-Adhesive Layer: Ukuphucula i-Weak Link

·  Khetha i-high-temperature resistant system yokubambelela : Beka phambili i-adhesive ye-silicone yoxinzelelo lwe-adhesive kwiimeko zokusebenza zexesha elide lobushushu obuphezulu.

:  Ukuguqulwa kweFluorocarbon Guqula i-adhesive ye-silicone ngeekhompawundi ze-fluorocarbon ukunyusa iqondo lobushushu beglasi (Tg) ukuya kuma-230℃. Emva kweeyure ezingama-48 zokusetyenziswa ngokuqhubekayo kwi-260 ℃, izinga lokugcinwa kokubambelela lisadlula i-85%.

·  Yazisa inethiwekhi ye-crosslinking : Yakha i-nano-scale crosslinking networks ukunyusa kakhulu amandla adibeneyo kunye nokumelana nokucheba kwe-adhesive layer kumaqondo okushisa aphezulu.

·  Yongeza i-thermal stabilizers : Dibanisa i-phenol ethintelweyo kunye nezinye i-thermal stabilizers kwifomula ukuthintela ngokufanelekileyo ukuthotywa kwe-oxidative phantsi kobushushu obuphezulu.

2. I-Substrate Layer: Phakamisa umda wokumelana nokushisa ngokubanzi

·  I-Nano-filler modification : Yongeza i-nano silica, i-boron nitride nanotubes kunye nezinye ii-nanoparticles kwi-PTFE substrate ukwenza iindawo ezinqamlezayo ezibonakalayo. Ubushushu bokuguqula ubushushu bunokunyuswa nge-20-30 ℃, ngelixa kugcinwa ngaphezulu kwe-90% yokunamathela kokuqala kwi-260 ℃.

·  Unyango lwe-molecular crosslinking : I-Crosslink PTFE i-molecular chain ukuphakamisa ubushushu benkonzo eqhubekayo ukuya kwi-300℃.

Ukomelezwa  kweFayibha : Yongeza i-25% yefayibha yeglasi okanye ifayibha yekhabhoni ukonyusa ukuxhathisa kwe-creep nge-300%, ivumela ukusetyenziswa ngokuqhubekayo ukuya kuthi ga kwi-280℃.

3. Ujongano kunye noYilo lweZakhiwo: Ukuphucula ukuzinza kwebhondi

·  Unyango lomphezulu weSubstrate : Faka unyango lweplasma okanye ukufakwa kweekhemikhali kumphezulu we-PTFE ukunyusa uburhabaxa kunye nomsebenzi womphezulu, ukomeleza ukunamathela kobuso kwaye uthintele i-delamination kwiqondo lobushushu eliphezulu.

·  Yongeza i-intermediate barrier layer : Faka i-polyimide (PI) yodwa umaleko phakathi kwe-PTFE substrate kunye ne-adhesive ukuvala ukungena kwe-adhesive kunye nokufuduka phantsi kobushushu obuphezulu, ukuphucula ukuzinza kwesakhiwo ngokubanzi.

·  Ukwandisa isakhiwo esidibeneyo : Yamkela i-multi-layer composite structure: I-PTFE yokugqoka + i-substrate yokuqinisa + i-high-temperature stable layer , ukulungelelanisa ukuxhathisa ubushushu kunye nokusebenza kwe-adhesive comprehensive.

·  Imvume yokwandiswa kwe-thermal egciniweyo : Ulwandiso lwe-coefficient ye-PTFE malunga namaxesha ali-10 entsimbi.

Gcina isithuba se- 0.15-0.3 mm  kuyilo lwesakhiwo ukukhulula uxinzelelo lwe-thermal ngokufanelekileyo.

Lo mxholo wobugcisa ungentla unikwe ngu I-Jiangsu Aokai yeZixhobo eziNtsha zeTekhnoloji Co., Ltd.

Ukuba ufuna ulwazi oluthe kratya malunga neeparitha zobugcisa, iimeko zesicelo kunye nezisombululo ezilungiselelwe umgca wethu wemveliso epheleleyo - kubandakanywa i-PTFE i-high-temperature tape, i-PTFE high-temperature tape, i-PTFE high-temperature mesh belt, ibhanti lomshini wokuthungatha, umshini wokuthungatha ongenamthungo, ilaphu le-PTFE elinecala elinye, i-high-temperature resistant-belt-conveyor-belt-conveyor-belt-high-temperature resistant-belt-conveyor-belt-conveyor-conveyor-conveyor-conveyor

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