1. Carbon fiber ntau muab tub lim
Carbon fiber sealing muab tub lim yog ib hom tshiab sealing muab tub lim. Qhov kev ua tau zoo ntawm tus kheej lubricating, siab thiab kub tsis kam, thiab tshuaj lom neeg ua haujlwm ntawm carbon fiber sealing fillers tau nyiam cov xim zoo. Tsis tas li ntawd, qhov elasticity thiab yooj ntawm carbon fiber sealing fillers li compression fillers kuj zoo heev. Qhov tsis zoo ntawm carbon fiber sealing fillers tsuas yog tias lawv muaj infiltration thiab to, tab sis lawv tuaj yeem tiv thaiv lawv los ntawm kev ntub dej hauv polytetrafluoroethylene lossis lwm cov nplaum. Tam sim no, tus nqi ntawm carbon fiber sealing muab tub lim yog tus nqi siab, tab sis nrog kev txhim kho carbon fiber, tus nqi ntawm carbon fiber sealing muab tub lim yuav txo qis. Yog li ntawd, carbon fiber sealing muab tub lim yog qhov zoo tshaj plaws thiab cog lus muab tub lim.
2. Hlau fillers
Muaj ob hom hlau fillers: semi hlau fillers thiab tag nrho cov hlau muab tub lim. Semimetallic fillers yog tsim los ntawm kev sib xyaw ntawm cov hlau thiab cov khoom tsis yog hlau; Tag nrho cov khoom siv hlau tsis muaj cov hlau tsis muaj hlau. Ntawm lawv, muaj ib hom hlau daim kab xev qhwv muab tub lim, uas siv cov hlua asbestos raws li cov tub ntxhais thiab txheej txheej yog tsim los ntawm kauv winding ntau txheej ntawm sawb txhuas, txhuas, thiab tin foil. Qhov saum npoo ntawm cov ntawv hlau yog coated nrog cov roj nplua nyeem, thiab cov hlais yog square. Qhov no semi metallic muab tub lim muaj cov thermal conductivity zoo, hnav tsis kam, kev sib txhuam ruaj khov, tsis muaj kev sib txhuam coefficient, siab mechanical zog, siab tsis kam, thiab siab hloov pauv. Cov muab tub lim yog tsim los ntawm winding ib tug hlau sawb, thiab tsis muaj teeb meem to. Qhov ceev ntawm ntug ntawm tus ncej tuaj yeem ncav cuag 20-25m / s. Nws yog tsuas yog siv rau boiler feedwater twj tso kua mis.
3. Nthuav graphite packing
Expanded graphite fillers yog ib ceg ntawm ntshiab graphite fillers. Nws yog cov khoom lag luam graphite ua los ntawm cov khoom zoo tshaj plaws ntuj flake graphite li raw khoom, uas dhau los ntawm kev kho tshuaj, kev kho cua sov tam sim no (txhim kho), thiab kev siv tshuab. Tom qab kev kho qhov kub thiab txias, cov graphite nthuav dav siv cov kab mob zoo li cov duab thiab tuaj yeem ua rau cov khoom siv yooj yim. Ntxiv nrog rau muaj tag nrho cov khoom zoo ntawm graphite, nws kuj muaj elasticity thiab compressibility, anisotropy, thiab tsis tshua muaj roj thiab kua permeability, ua rau nws zoo tagnrho sealing khoom. Vim nws qhov kev ua tau zoo, nws tseem hu ua "flexible graphite".
4. Nano qib sealing muab tub lim
Nano qib sealing packing yog ib tiam tshiab ntawm sealing packing rau industrial (dej) twj. Nano sealing muab tub lim yog txheej txheej (nano nplai) shear (non-woven) khoom. Cov khoom no muaj kev ntxhib los mos, du thiab mos zoo nkauj, siab tensile lub zog, thiab muaj zog plasticity. Nws tuaj yeem ua tau manually deformed, ua rau nws zoo heev raws li kev sib txhuam cov khoom siv thiab yooj yim rau nruab. Nws muaj ob yam tseem ceeb: superplasticity thiab nqus tau, zoo lubrication kev ua tau zoo, kev pab lub neej ntev, yooj yim installation thiab txij nkawm. Nws cov lubrication zoo heev tuaj yeem txo cov khoom siv hluav taws xob zoo; Lub neej ua haujlwm ntev ntev thiab kev saib xyuas dawb tuaj yeem txuag tau ntau lawm thiab kho cov nqi ntawm cov lag luam thiab txo qis kev siv zog ntawm cov neeg ua haujlwm. Xaiv cov khoom no yog ib txoj hauv kev zoo rau cov lag luam kom ua tiav kev txuag hluav taws xob, txo kev siv, thiab cov nyiaj tau los nce.