Dab tsi yog plaub pawg ntawmStainless Hlau Bolts?
1. Teflon
Lub npe ua lag luam ntawm PTFE yog "Tefle", yooj yim PTFE lossis F4, feem ntau yog hu ua huab tais ntawm plastics. Nws yog ib qho ntawm feem ntau corrosion-resistant cov ntaub ntawv nyob hauv lub ntiaj teb niaj hnub no. Nws yog siv los tsim ua cov kua roj pipelines, cov kev pauv hluav taws xob thiab lwm cov khoom siv cov ntsiab lus sib txuas. Cov khoom zoo tshaj plaws hauv qab.
TetraTloethylene yog ib qho ntawm cov khoom siv corrosion zoo tshaj plaws hauv ntiaj teb niaj hnub no, yog li nws muaj lub koob npe nrov ntawm "vaj ntxwv yas". Nws tuaj yeem siv rau hauv txhua yam tshuaj lom neeg nruab nrab ntev ntev, thiab nws cov teeb meem tau daws ntau yam teeb meem hauv kuv lub teb chaws cov tshuaj, roj av, tshuaj thiab lwm thaj chaw. Teflon ntsaws ruaj ruaj, gaskets, gaskets. Polytetrafluoroethylene ntsaws ruaj ruaj, gaskets, thiab gaskets yog ua los ntawm kev ncua qib polytetrosraethorraethrene resin. Piv nrog rau lwm cov yas, PTFE muaj cov yam ntxwv ntawm cov tshuaj zoo heev kuj thiab cov tshuaj kub. Nws tau siv dav siv raws li cov khoom sib khi thiab sau cov khoom.
Nws yog cov compound polymer tsim los ntawm polymerization ntawm tetrafluoroethylene. Nws muaj tshuaj lom neeg ruaj khov, corrosion kuj, airtightness, siab lubrication, tsis muaj qhov sib cais, hluav taws xob rwb thaiv tsev thiab zoo tsis kam rau kev laus. Nws tuaj yeem ua haujlwm ntev ntev ntawm qhov kub ntawm +250℃rau -180℃Cov. Tsuas yog rau molten hlau sodium thiab kua fluorine, nws tuaj yeem tiv thaiv txhua lwm yam tshuaj. Nws yuav tsis hloov thaum hau hauv Aqua Regia.
Tam sim no, txhua hom PTFE cov khoom lag luam muaj ua si lub luag haujlwm tseem ceeb hauv kev lag luam hauv tebchaws, kev lag luam hluav taws xob, kev tiv thaiv hluav taws xob, kev tiv thaiv hluav taws xob, ib puag ncig kev tiv thaiv thiab choj. Stainless hlau ntsia hlau
2. Carbon Fiber
Cov pa roj carbon fiber yog cov tshuaj carbon fibroous nrog cov cov ntsiab lus carbon ntau dua 90%. C / C ib qho khoom siv tsim ntawm nws thiab cob yog ib qho ntawm feem ntau corrosion-resistant cov ntaub ntawv.
Pa roj carbon fiber yog ib hom tshiab ntawm high-zog, high-modulus fiber ntau nrog cov ntsiab lus carbon ntau dua 95%. Nws yog cov ntaub ntawv me me uas tau los ntawm piling ci ntsa iab graphite microcrystals raws cov lus qhia txog cov kab mob, thiab kev kho mob carbon monoxide thiab graphitization. Carbon fiber yog "yoog raws sab nraud thiab rigid nyob sab hauv". Nws zoo yog sib dua li ntawm cov hlau txhuas, tab sis nws lub zog yog siab dua li ntawm cov hlau. Nws tseem muaj cov yam ntxwv ntawm corrosion tsis kam thiab siab modulus. Nws yog cov khoom tseem ceeb hauv kev tiv thaiv kev ua tub rog, tub rog thiab pej xeem cov ntawv thov. Nws tsis tsuas yog muaj cov xeeb ceem ntawm cov pa roj carbon, tab sis kuj muaj cov khoom muag muag ntawm textile fibers. Nws yog ib tiam tshiab ntawm kev txhawb nqa cov fibers.
Carbon fiber muaj ntau yam zoo tshaj plaws. Carbon fiber muaj lub zog siab lub zog thiab cov modulus, qhov kev ua tau zoo, tsis muaj kev sib cav sib ceg, thiab cov hluav taws xob tshwj xeeb yog nruab nrab ntawm cov hlau tsis sib xws thiab tsis yog xim hlau. Ntawm cov hlau, cov coefficient ntawm thermal expansion yog me me thiab anisotropic, corrostropic, thiab kev sib kis xoo hluav taws xob yog qhov zoo. Zoo hluav taws xob thiab thermalivity, zoo electromagneting, thiab lwm yam.
Piv nrog cov tsoos iav fiber ntau, cov tub ntxhais hluas cov qauv ntawm cov pa roj carbon fiber muaj ntau tshaj 3 zaug; Piv nrog Kevlar fiber ntau, cov tub ntxhais hluas cov modulus yog hais txog 2 zaug, thiab nws tsis o los yog ogic hauv organic cov kuab tshuaj, acids, thiab alkalis. Zoo heev corrosion.
3. Tooj oxide
Tooj liab oxide yog tam sim no yog feem ntau corrosion-resistant cov ntaub ntawv. Sweden yeej ib txwm yog tus thawj coj ntiaj teb hauv kev ua teb ntawm Nuclear Pov Tseg Pov Tseg. Tam sim no lub teb chaws'Cov Technicians siv lub thawv tshiab ua los ntawm tooj liab oxide mus khaws cov khib nyiab nuclear, uas tuaj yeem lav cia khoom kom muaj 100,000 xyoo.
Tooj liab oxide yog cov oxide liab dawb ntawm tooj liab, amphiphilic me ntsis thiab hygroscopic. Cov txheeb ze cov molecular yog 79.545, lub ntom yog 6.3 ~ 6.9 g / cm3, thiab lub taw tes melting yog 1326℃Cov. Nws yog insoluble nyob rau hauv dej thiab ethanol, soluble hauv acid, ammonium chloride thiab poov tshuaj cyassium cov tshuaj. Nws tshem tawm maj mam nyob rau hauv Ammonia kev daws thiab muaj peev xwm hnov mob nrog muaj zog alkali. Tooj liab oxide yog tsuas yog siv los ua Rayon, ceramics, roj teeb, thiab rau hydrogen ntau lawm, catalalts, thiab ntsuab iav.
4. Platinum
Platinum yog tshuaj ruaj khov thiab tsis cuam tshuam nrog hydrochloric acid, nitric acid, sulfuric acid thiab organic acid thiab organic acids nyob rau hauv chav tsev. Nws yog hu ua "feem ntau corrosion-resistant hlau", tab sis nws yog soluble hauv aqua regia. Titanium yog ib qho yooj yim los tsim zaj duab xis ruaj khov ntawm titanium txias raj yog suav tias yog pub dawb los ntawm corrosion thiab yaig.
Platinum yog ib tug heev tshwm sim rau cov hlau muaj nuj nqis dawb. Platinum flashed lub teeb ci ntsa iab hauv keeb kwm ntawm tib neeg kev vam meej thaum ntxov li 700 BC. Nyob rau hauv ntau tshaj 2,000 xyoo ntawm tib neeg siv ntawm platinum, nws ib txwm tau suav tias yog ib qho ntawm cov hlau uas muaj nqi tshaj plaws.
Qhov xwm ntawm Platinum yog ruaj khov, nws yuav tsis ua rau tsis zoo lossis ploj mus vim tias hnav txhua hnub, thiab nws cov lus muaj ib txwm zoo ib yam. Txawm hais tias nws tau nkag mus rau hauv cov tshuaj acidic hauv lub neej, tshuaj pleev xim rau hauv cov hniav nyiaj kub, yog li koj tuaj yeem hnav cov hniav nyiaj hniav kub nrog kev ntseeg siab txhua lub sijhawm. Txawm li cas los nws hnav ntev ntev npaum li cas, platinum tuaj yeem tuav nws lub ntuj dawb thiab yuav tsis ploj mus.
Lub Sijhawm Post: Sep-24-2021