Yuav ua li cas los txhim kho qhov kev tiv thaiv - leak thiab kab xeem qib ntawm silicone roj hmab insulators/composite insulators/polymer insulators?
Txhim kho qhov kev ua tau zoo ntawm silicone roj hmab insulators nyob rau hauv kev tiv thaiv to trace testing tuaj yeem ua tiav los ntawm kev sib koom ua ke ntawm cov khoom tsim, interface qauv, thiab txheej txheem molding. Lub tswv yim tseem ceeb yog ua kom nrawm nrawm, cua sov- rwb thaiv tsev, thiab oxygen cais cov txheej txheem ceramic txheej rau saum npoo thaum ua kom ntseeg tau cov khoom siv thiab kev ua haujlwm, thiab txhawm rau txo cov pa roj carbon deposition. Raws li kev tshawb fawb tshiab, cov kev ntsuas hauv qab no tuaj yeem ua raws li qhov tseem ceeb:
1. Ua kom zoo rau kev tiv thaiv kab mob tiv thaiv kab mob - "txo - nce efficiency"
-Txawm hais tias ib txwm 40-60 phr aluminium hydroxide (ATH) tuaj yeem dhau ntawm 4.5 kV inclined dav hlau txoj kev (IPT), nws ua rau nws cov mechanics thiab hydrophobicity deteriorates.
-Txo ATH rau 15-25 phr thiab compounding 2-4 phr ntawm tus kheej-tsim synergists tuaj yeem ua tiav qib 1A 4.5:
FS-029 (ATH+gas-theem TiO ₂+platinum complex + tshwj xeeb coupling agent, high-temperature pretreatment);
Amino ester uas muaj silane (3-5 phr) synergistically tsim Si-OC barrier txheej thiab quenches dawb radicals thaum combustion nrog Castell platinum catalyst.
-Kev taw qhia ntawm Fe ₂ O ∝ 2-3 phr tuaj yeem ua rau muaj kev tsim cov theem ntawm mullite, txo qis ATH ntxiv thiab tswj kev hla ntawm IPT.
2. Qhia "organic-inorganic hybrid" multifunctional additives
-3- (1,2,2,6,6-pentamethylpiperidinamide) propylsilane (PPAS) tuaj yeem ncav cuag 1A 4.5 nrog qhov siab tshaj plaws oxygen Performance index ntawm 30% ntawm 3 phr, combining siab nplaim taws retardancy thiab photostability.
-Polysilazane (PSiN) 1.8-2.4 phr+8 ppm Pt kev sib xyaw ua ke tuaj yeem sib txuas sai sai rau hauv qhov ntom ntom Si-ON network hauv qab arc, inhibiting carbon deposition thiab corrosion, nrog ib tug loj poob ntawm tsawg dua 1%.
-Kev sib xyaw ua ke ntawm cov organic hloov kho zirconium phosphate (M-ZrP) thiab aminosilane ib txhij tuaj yeem txhim kho kev tiv thaiv hluav taws xob, hluav taws xob retardancy, thiab cov khoom siv kho tshuab.
3. Txhim kho cov khoom siv roj hmab sib txuas, ntsuas cov tshuab thiab khawb tsis kam
-Kev kho ua ntej ntawm SiO ₂ nrog urethane silane (URS) txhim kho kev sib txuas ntawm lub ntsej muag, txo qhov corrosion ntawm 34.4 ‰ mus rau 2.5 ‰, thiab synchronously nce tensile / tsim kua muag lub zog.
-Vinyl triethoxysilane (Vi TES) synergistically reacts nrog txheej ob hlau hydroxides (LDH) kom ua tiav 1A 4.5 ntawm tsuas yog 3.3/5.0 phr, nrog rau electrochemical corrosion poob ntawm 0.3%.
4. Cov ntsiab lus ntawm molding thiab post- txheej txheem txheej txheem
-Ua ntej txhaj tshuaj / nchuav, lub tshuab nqus tsev nqus dej ntawm 110-120℃rau 2 teev kom tsis txhob ya raws los ntawm qhov ua rau kub kub ua npuas thiab pinholes.
-Siv ob-theem vulcanization (150℃× 1 h+200℃× 4 h) los txhawb kev ua tiav crosslinking ntawm tus neeg sawv cev sib txuas, txo qis cov molecules dawb, thiab txhim kho qhov txuas ntxiv ntawm cov txheej txheem ceramic.
-Qhov saum npoo ntawm cov khoom tiav yog coated nrog 20-30 μ m chav tsev kub kho silazane kua roj vanish, uas tuaj yeem ntxiv qhov tsim ntawm Si-ON barrier thaum lub sijhawm ua haujlwm thiab txuas ntxiv lub neej kev laus.
5. Kev ua haujlwm ua ntej thiab kev ntsuam xyuas ua ntej kuaj
-Ultrasonic tu tom qab polishing tus qauv → so nrog isopropanol → ziab ntawm 50℃rau 24 teev kom tshem tawm cov kab mob ntawm cov neeg tso tawm thiab cov stains.
- Ua ntej, ua 1 kV / 1-teev ua ntej taug qab, tom qab ntawd tsa nws mus rau 4.5 kV kom nthuav tawm cov chaw tsis muaj zog ua ntej thiab ntsuas qib "tiag".
-Synchronize cov ntaubntawv povthawj siv ntawm to tam sim no, infrared kub nce, thiab corrosion zoo, tsim ib tug database ntawm "tam sim no lub sij hawm" nkhaus, thiab qhia qhov zoo - tu cov qauv.
Raws li cov phiaj xwm saum toj no, qib IPT ntawm cov kua / siab-kub vulcanized silicone roj hmab tuaj yeem ruaj khov rau 1A 4.5, nrog lub zog tensile ntawm Ntau dua lossis sib npaug li 5 MPa thiab pob txha elongation ntawm Ntau dua lossis sib npaug li 300%, thaum tuav tag nrho ATH ntau npaum li ntawm 2. Nws kuj muaj V-0 nplaim retardancy thiab zoo hydrophobicity, ua tau raws li lub sijhawm ua haujlwm ntev -cov kev cai ntawm high-voltage composite insulators.
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