Decomposed Aged Reagents Form Mixed Corrosive Media Los Loosen PTFE Surface Matrix
Kev kho deg tshuaj da dej maj mam deteriorate tom qab kev pab cuam ntev. Thawj cov additives zom rau hauv ntau cov organic degradation fragments, lub caij no inorganic ntsev impurities tsis tu ncua. Kev sib xyaw ntawm cov khoom lag luam organic decomposition thiab inorganic corrosive ions tsim cov khoom sib xyaw corrosive ib puag ncig PTFE immersion rhaub. Cov khoom sib txawv corrosive tawm tsam ntau txoj haujlwm tsis muaj zog ntawm fluoropolymer molecular chains synergistically. Heaters working with regularly refreshed new bath maintain dense intact outer structure, while long contact with aged liquid creates extensive subsurface micro-pores. Ua ke cov organic-inorganic synergistic corrosion thiab cyclic thermal stress nthuav txoj kev nkag mus, ua rau tag nrho - deg matrix loosening thiab nruam rwb thaiv tsev attenuation ntawm PTFE immersion rhaub.
Kev sib piv hauv kev sim qhia pom PTFE immersion rhaub siv ib ntus txuas ntxiv da dej ua kom ruaj khov lub neej ntawm 18-24 lub hlis. Cov cua sov tso rau hauv txhua hnub hauv cov hnub nyoog hnyav hnyav uas muaj cov tshuaj ua kua ua rau muaj kev cuam tshuam loj ntawm qhov pore proliferation hauv 10 lub hlis. Tsab ntawv xov xwm no txheeb xyuas cov laus cov kua organic-inorganic composite thermal- tshuaj degradation mechanisms, qhia txog kev lag luam-offs ntawm kev siv da dej ntev ntev thiab tiv thaiv-composite- tiv thaiv corrosion, thiab muab qib anti- laus- da dej sib piv
Core Engineering Trade-tawm ntawm Kev ncua da dej ncua sij hawm thiab Composite Corrosion Control
Kev nthuav dav kev pab cuam lub neej txo cov khoom siv tshuaj lom neeg thiab cov nqi kho cov dej khib nyiab, tseem khaws cov organic decomposition tshuaj thiab inorganic impurities sib koom ua ke ua kom muaj corrosion ntawm PTFE immersion rhaub. Kev ua raws sij hawm ib feem ntawm kev rov ua dua tshiab txwv tsis pub muaj kev cuam tshuam ntawm cov khoom degradation hauv paus, tab sis ua rau cov tshuaj ntxiv ntxiv thiab dej khib nyiab ua haujlwm. Standard uniform-phab ntsa PTFE immersion rhaub tsis muaj ntau-cov khoom tiv thaiv corrosion thaiv hla- txuas ntxiv. Ntev-lub sij hawm co- tawm tsam los ntawm cov organics thiab inorganic ions sai sai nthuav tawm cov micro-interstices mus rau hauv kev sib txuas tag nrho-sab hauv subsurface defect networks.
Tshaj -Aged Bath Exposure Severity & PTFE immersion heater Composite Corrosion Risk Table
| Cov Sijhawm Ua Kua Dej Txhua Hnub | Degree ntawm da dej degradation | Composite Degradation Accumulation Ceev | Kev Pabcuam Lub Neej | Cov qauv pom zoo |
|---|---|---|---|---|
| Tsawg dua lossis sib npaug li 3h, ib nrab da dej txuas ntxiv | Kev laus me me, cov khoom tsis muaj degradation tsawg | Slow faint cais subsurface micro-gap | 17–23 lub hlis | Txheem molded PTFE immersion rhaub |
| 3-7h ncua ua kua dej tshiab | Kev laus nruab nrab, sib xyaw organic & inorganic impurities | Nruab nrab expansion ntawm subsurface pore channels | 11–15 lub hlis | Nruab nrab hla-txuas ntau- cov khoom sib txuas nruab nrab tuab - phab ntsa PTFE immersion rhaub |
| >7h ntev -lub sij hawm loj heev degraded stagnant da dej | Kev laus hnyav, siab concentration ntawm decomposition residues | Fast puv -nto ntxeem tau matrix & niaj hnub phab ntsa thinning | 4–9 lub hlis | Seamless siab cross-link tuab-phab ntsa tiv thaiv-composite- laus-corrosion molded PTFE immersion rhaub |
Dual Organic{0}}Inorganic Synergistic & Thermal Degradation Mechanism
Cov dej uas muaj hnub nyoog hnyav heev muaj ntau cov organic molecular fragments los ntawm additive decomposition thiab enriched inorganic corrosive ions. Cov tshuaj no sib npaug adsorb ntawm PTFE immersion rhaub nto. Continuous heating promotes organic fragments to invade molecular gaps while inorganic ions erode grain boundary weak zones, jointly breaking intermolecular binding force and generating dense micro-pores. Thaum lub sij hawm rov ua cua sov- lub voj voog cua txias, cov khoom sib xyaw ua ke txuas ntxiv nthuav dav subsurface defect channels. Complex organic-inorganic media permeate qhov sib txawv ntawm sab nrauv degraded PTFE plhaub thiab cov cua kub rwb thaiv tsev muab tub lim. Composite conductive residues khaws cia hauv cov txheej txheem rwb thaiv tsev, tsim cov xaim mus tas li uas tsis tu ncua txo qis kev tiv thaiv kev tiv thaiv ib puag ncig los ntawm lub voj voog. Porous degraded matrix absorbs ntau cov organic fragments thiab inorganic impurities nyob rau hauv kev ncig, ntxiv dag zog rau synergistic corrosion thiab ua rau tus kheej -mob kev laus lub voj voog. Kev puas tsuaj faib sib npaug ntawm txhua qhov chaw hauv dej ntawm PTFE immersion rhaub.
Kev Tsim Nyog Hazard
Composite corrosion-induced tag nrho- deg micro- pores txo cov rwb thaiv tsev tsis kam ntawm PTFE immersion rhaub thiab ua rau muaj kev tiv thaiv tsis tu ncua, cuam tshuam qhov kev kho deg tas li batch ntau lawm. Loose porous degradation khaubncaws sab nraud povtseg cuam tshuam kev hloov pauv ntawm cov cua sov thiab ua kom tawg ua ntu zus hotspots, ua rau muaj kev cuam tshuam kev ua haujlwm tsis sib xws thiab cov khoom seem ntau dua. Cov phab ntsa zoo li niaj zaus thinning nws thiaj li tsim cov qhov nkag mus rau qhov tsis sib xws, ua rau ntau - taw tes luv - Circuit Court tsis ua haujlwm thiab ua tiav scrapping ntawm PTFE immersion rhaub. Fine brittle PTFE fragments los ntawm ntxeem tau aav thiab paug cov laus txheej txheem ua kua, ua kom sib xyaw particle thiab organic contamination defects ntawm precision hlau substrates thiab Circuit Court boards.
Mitigation Matching Solutions
Tsawg- laus- cov kab ntau lawm muaj kev pheej hmoo nrog rau ib ntus ua kua rov ua dua tshiab tuaj yeem xa cov qauv molded PTFE immersion rhaub; tsis tu ncua kuaj da dej muaj pes tsawg leeg los txiav txim rau kev laus. Cov chav da dej nruab nrab- laus- cov kev pheej hmoo rhiav xaiv nruab nrab hla- txuas ntau- cov khoom thaiv qhov nruab nrab tuab - phab ntsa PTFE immersion rhaub nrog stabilized molecular stacking los tiv thaiv kev yaig. Cov kab ntau lawm ua haujlwm nrog ntev - lub sijhawm muaj hnub nyoog hnyav ua kua yuav tsum tau nruab seamless high cross-link tuab-phab ntsa tiv thaiv-composite- laus-corrosion molded PTFE immersion rhaub kom tiv thaiv kev sib koom ua ke ntawm cov khoom lag luam degradation thiab inorganic ions. Cov cai tswj kev ua haujlwm pab: teeb tsa-kev tshuaj xyuas lub voj voog da dej thiab rov ua dua SOP; tshem tawm sludge precipitates tsis tu ncua kom qeeb cov kua aging; zam tsis tu ncua tsub zuj zuj ntawm decomposition impurities hauv lub tank.
Xaus
Tag nrho -Nto ntxeem tau matrix thiab niaj hnub phab ntsa thinning ntawm PTFE immersion rhaub nyob rau hauv ntau tshaj - laus degraded da dej kua pib los ntawm kev sib koom ua ke erosion ntawm coexisting organic decomposition fragments thiab inorganic corrosive ions ntxiv rau thermal expansion ntawm subsurface pores, es tsis tu ncua compact matrix. Ordinary non-crosslinked nyias-wall PTFE immersion heater tsis muaj ntau-cov khoom thaiv kev hla- txuas ntxiv kom tiv taus ntev - lub sij hawm sib xyaw corrosion. Standardized da dej aging tshuaj ntsuam xyuas thiab ncua sij hawm raws tu qauv, matched composite-corrosion-resistant cross-link tuab-phab ntsa PTFE immersion rhaub raws li kua aging℃thiab txhua hnub raug lub sij hawm, muaj peev xwm tswj tau pore network propagation thiab ncua kev pab cuam lub neej 1 PTFE lub cev ntev immersion rhaub.
