2024 Tus sau: Beatrice Philips | [email protected]. Kawg hloov kho: 2024-01-07 13:51
Kev tsim khoom niaj hnub muaj ntau yam kev sib xyaw rau txheej thiab tiv thaiv ntau yam khoom los ntawm qhov tsis zoo ntawm cov xwm txheej ib puag ncig ib puag ncig. Rau kev pleev xim rau txhua yam ntawm cov nplaim, cov kua roj bituminous tau nquag siv - kev tsim tshwj xeeb raws li bitumen thiab polyester resins.
Nws yog dab tsi?
Bituminous varnishes sib txawv hauv qhov zoo thiab muaj pes tsawg leeg. Tshwj xeeb, qhov no cuam tshuam los ntawm cov khoom siv siv rau kev tsim cov khoom lag luam zoo li no. Ntawm cov yam ntxwv yam ntxwv, ib tus tuaj yeem tawm nws lub peev xwm ua kom mos thiab yaj nyob rau hauv qhov cuam tshuam ntawm qhov kub, ntxiv rau, nws zoo li yaj tsuas yog thaum cuam tshuam nrog cov kuab tshuaj organic. Raws li nws lub cev ntsuas, cov kua roj vanish yog cov khoom uas muaj cov ntxhiab tsw ntxhiab, cov xim uas nyob ntawm xim av mus rau pob tshab . Nws yog cov kua heev hauv kev ntxhib los mos, yog li ntawd, xav tau kev saib xyuas thaum thov kom tsis txhob npog cov nplaim nrog ntau cov kua roj vanish. Cov xim thiab cov kua roj vanish yog ua los ntawm cov roj zaub, nrog cov khoom sib xyaw ntawm rosin, cov kuab tshuaj, harpyus ether.
Cov no yog cov khoom tseem ceeb hauv kev sib xyaw bituminous varnishes ntawm txhua lub npe. Lawv kuj tseem tuaj yeem suav nrog tshuaj ntxiv tshuaj tua kab mob thiab tshuaj tiv thaiv corrosion.
Hauv kev tsim cov kua roj vanish, ntau hom bitumen tau siv raws li tus qauv:
- keeb kwm ntuj - asphalts / asphaltites ntawm qhov sib txawv zoo;
- dag nyob rau hauv daim ntawv ntawm cov khoom seem roj thiab lwm yam;
- thee (peat / woody pitches).
Daim ntawv lo khoom thiab cov lus qhia ntxaws
Niaj hnub no cov kua roj vanish bituminous tau sawv cev los ntawm 40 lub npe. Ntau cov qauv siv dav.
BT-99
Cov xim thiab cov kua roj vanish (LKM), haum rau impregnation thiab hluav taws xob rwb thaiv tsev. Ntxiv nrog rau kev daws ntawm bitumen, roj alkyd thiab resins, nws muaj desiccants thiab lwm yam ntxiv. Tom qab thov, nws tsim cov yeeb yaj kiab dub zoo nkauj. Siv los ua cov khoom siv hluav taws xob. Cov kua roj vanish yuav tsum xub muab diluted nrog toluene lossis hnyav.
Kev thov yog nqa nrog txhuam xim, tab sis qee qhov, tag nrho cov khoom tau raus hauv cov kua roj vanish.
BT-123
Tsim los tiv thaiv cov khoom hlau los ntawm xeb. Muab kev tiv thaiv rau cov khoom uas tsis yog xim hlau thaum thauj mus los hauv cov xwm txheej nyuaj thiab thaum khaws cia ntev. Cov kua roj vanish txheej tsis hloov pauv nws cov txiaj ntsig txog li 6 lub hlis hauv huab cua sov. BT-123 yog siv thaum ua haujlwm nrog cov khoom vov tsev thiab nyob rau lwm theem kev tsim kho … Cov kua roj vanish yog tus yam ntxwv tiv taus qhov hloov pauv kub, noo noo thiab qee yam tshuaj. Txheej nrog cov kua roj vanish ntawm cov khoom lag luam no txuas ntxiv lub neej kev pabcuam ntawm cov khoom, muab lawv lub zog thiab ci ci. Cov nplaim yog du, tsis muaj pockmarks thiab bulges.
BT-142
Cov kua roj vanish ntawm hom khoom no muaj qib zoo ntawm cov dej tsis kam thiab cov khoom tiv thaiv.
Tsim los pleev xim rau xim hlau thiab ntoo.
BT-577
Rau kev tsim khoom ntawm cov kua roj vanish no, bitumen tau siv sib xyaw nrog benzene, nrog rau ntxiv cov carbon disulfide, chloroform thiab lwm cov kuab tshuaj organic. Kev sib xyaw yog ntxiv nrog cov tshuaj hloov pauv hauv daim ntawv ntawm polystyrene, epoxy resins, roj hmab hluavtaws, roj hmab crumbs thiab lwm yam. Xws li kev suav nrog nce cov khoom lag luam zoo xws li kev ywj pheej thiab lub zog tensile .… Qhov hnyav no tseem suav nrog cov khoom siv uas ua kom qhuav thiab ua kom tawv tawv: siv quav ciab, roj zaub, roj hmab thiab lwm yam tshuab ziab khaub ncaws.
BT-980
Hom tshuaj no yog qhov txawv ntawm lub hauv paus roj thiab lub sijhawm qhuav kom qhuav (12 teev ntawm t 150 ° C).
Cov viscosity ua haujlwm tau muab faib rau cov khoom siv los ntawm kev diluting nws nrog cov kuab tshuaj, xylene lossis sib xyaw ntawm ib qho ntawm cov kuab tshuaj no tau qhia rau tus ntsuj plig dawb hauv 1 rau 1 piv.
BT-982
Cov khoom siv hluav taws xob zoo tsim nyog kuj tau qhia los ntawm cov kua roj vanish ntawm hom khoom no. Nws tau siv los kho cov tshuab hluav taws xob thiab ua cov tshuaj tiv thaiv xeb rau lwm yam.
BT-5101
Yooj yim kom qhuav cov kua roj vanish. Nws tsuas yog siv los ua cov khoom zoo nkauj thiab tiv thaiv xeb rau cov hlau lossis ntoo. Ua ntej ua haujlwm, nws yog qhov yuav tsum tau ua kom cov kua roj vanish rau 30-48 teev … Qhuav ntawm 20 ° C rau li 2 teev.
BT-95
Roj-bitumen nplaum kua roj vanish siv dav ua hluav taws xob rwb thaiv tsev . Thiab tseem nws tau siv ua cov nplaum hauv kev tsim cov kab xev mica. Nyob rau theem tsim khoom, zaub roj tau ntxiv rau nws.
Cov khoom siv tau yaj nrog lub siab dawb, xylene, hnyav lossis sib xyaw ntawm cov neeg sawv cev no.
BT-783
Hom tshuaj no yog kev daws teeb meem ntawm cov roj av bitumen nrog cov roj zaub, nrog rau suav nrog cov desiccants thiab cov kuab tshuaj organic ua cov tshuaj ntxiv. Cov khoom lag luam rau lub hom phiaj tshwj xeeb - lawv tau npog nrog cov roj teeb kom tiv thaiv lawv los ntawm sulfuric acid. Qhov tshwm sim yog qhov ywj pheej, ruaj khov, txheej txheej tawv uas tiv taus qhov kub tshaj. Nws tau thov los ntawm kev txau lossis txhuam, nyias nrog cov txheej txheem ntxhia lossis xylene. Lub sijhawm kom ua kom qhuav - 24 teev, hauv qhov chaw ua haujlwm thaum thov, qhov kub ntawm + 5 … +35 degrees tau tso cai.
Nws siv rau dab tsi?
Niaj hnub no, cov kua roj vanish raws li bitumen muaj nyob hauv ntau hom thiab tau siv los ua cov txheej txheem ntau yam khoom siv. LKM yog qhov xav tau siab rau kev ua ntoo. Nws yog qhov tsim nyog rau kev faib khoom tsim nyog lub cev thiab tshuaj lom neeg rau saum ntoo kom siv tau ntxiv. Hauv qhov no, nws tau siv nyias nyias, lossis cov khoom tau qis rau hauv nws thiab tom qab ntawd qhuav. Nws kuj tseem siv ua lub tsho sab saum toj rau pob zeb, cib thiab hlau.
Bituminous cov kua roj vanish muab qib kev pom zoo ntawm kev pov hwm, nws yooj yim heev rau siv nrog txhuam, cov menyuam, los ntawm tshuaj tsuag … Cov txheej yog zoo ib yam thiab huv si, tsis muaj dej ntws. Kev siv cov khoom lag luam nyob ntawm seb yam khoom zoo li cas yuav tsum ua tiav. Qhov nruab nrab, npog 1 sq. m ntawm cov khoom xav tau txog 100-200 ml.
Cov kua roj bitumen yuav tsum tau qhuav tom qab siv. Ntev npaum li cas nws yuav siv sijhawm, cov chaw tsim khoom qhia hauv cov lus qhia ncaj qha rau ntawm lub ntim khoom. Qhov nruab nrab, kev kho zaum kawg thiab tawv tuaj yeem xav tau tom qab 20 teev.
Bituminous cov ntaub ntawv pleev xim rau hauv lub neej niaj hnub tsim nyog rau ntau lub hom phiaj
- Txhawm rau tiv thaiv cov khoom siv hlau los ntawm xeb. Muaj ntau txoj hauv kev los tiv thaiv xeb, uas cuam tshuam rau ntau hom hlau. Varnishing yog twv yuav raug hu ua haujlwm daws teeb meem. Cov kua roj vanish tau nthuav tawm hla cov hlau hauv txheej tsawg, tiv thaiv kev sib cuag ntawm cov nplaim dej los yog cua. Cov kua roj vanish no yog qhov zoo rau kev siv sab nraum zoov, piv txwv li, qhov xwm txheej ntawm cov hlau nyob ntawm seb lub laj kab pleev xim li cas. Yog tias koj npog nws nrog cov kua roj vanish, nws yuav nyob ntev dua hauv nws daim ntawv qub.
- Lub hom phiaj thib ob ntawm cov khoom pleev xim txiav txim siab nws cov nplaum. Cov kua roj vanish nthuav tawm cov nplaum zoo rau ntau yam ntawm cov nplaim thiab pab kom sib koom qee yam khoom siv. Vim qhov no, hauv cov xwm txheej sib txawv nws tau siv los ua cov nplaum. Feem ntau txoj kev gluing no yog siv hauv kev tsim kho thaum txhim kho cov khoom siv vov tsev. Nyob rau tib lub sijhawm, nws yog qhov tsim nyog thiab muaj txiaj ntsig rau kev lag luam siv txoj hauv kev txias txias nrog bitumen kua roj vanish. Piv txwv li, thaum piv nrog cov kua nplaum kub kub, kev siv cov khoom pleev xim los ntawm qhov pom ntawm kev nyab xeeb tiv thaiv kom tsis txhob muaj hluav taws.
- Lub hom phiaj thib peb ntawm cov kua roj bitumen yog ua kom cov tawv nqaij tiv taus ya raws. Feem ntau lawv raug kho nrog cov ntoo ntoo, tiv thaiv lawv kom tsis txhob ntub. Raws li qhov tshwm sim, kev tiv thaiv ya raws ntawm cov khoom tau nce, thiab nws kav ntev dua. Xws li kev sib xyaw ua haujlwm pab tiv thaiv dej tsis tau zoo rau lub sijhawm ntev rau cov qauv thiab thaj chaw xws li pas dej da dej, chaw rau tsheb, hauv qab daus lossis hauv qab daus.
Muaj ntau thaj chaw uas cov ntaub ntawv no tau ua tiav. Kev sib xyaw bituminous tau nthuav dav vim nws tus nqi pheej yig thiab muaj txiaj ntsig zoo . Ntxiv mus, cov khoom no zoo tagnrho rau kho kom zoo nkauj txhua yam ntawm qhov chaw. Cov kua roj vanish yog xav tau hauv decoupage, thiab qee lub npe muab cov ntaub ntawv kom ci ntsa iab, thaum lwm tus tau tsim los ua qauv qub. Qhov ua tiav los ntawm nws muab kev pom pom ntawm kev laus.
LKM nrog cov xim av xim av yog tsim rau fiberboard thiab txiav ntoo, vim nws muab cov khoom ua kom nrov nrov. Txawm li cas los xij, cov kua roj vanish ua los ntawm cov khoom siv bituminous yog thoob ntiaj teb thiab haum rau ntau cov txheej txheem tsim khoom thiab txhua qhov chaw hauv lub neej txhua hnub. Tab sis nws tseem tsim nyog tsuas yog khaws cia kom raug. Cov khoom yuav tsum tau khaws cia hauv qab lub hau, kaw nruj, ntawm chav sov ntawm + 30 ° C thiab tsis tshaj + 50 ° C. Nws yog ib qho tseem ceeb los tiv thaiv cov khoom los ntawm tshav ntuj ncaj qha.
Tam sim no, bitumen varnishes tau tsim los ntawm ntau cov tuam ntxhab. Ntau yam khoom siv tau siv rau kev tsim khoom. Yog li, kev sib xyaw ntawm cov kua roj vanish ntawm bitumen yuav tsis haum rau GOST. Hauv cov ntawv qub ntawm cov ntaub ntawv pleev xim, ntuj resins thiab bitumen tau siv.
Cov cai ua haujlwm nyab xeeb
Nws yuav tsum nco ntsoov tias hom kua roj vanish no yog cov khoom tawg. Kev tuav nruj yuav ua rau hluav taws thiab raug mob. Ua haujlwm nrog cov khoom no yuav tsum tau nqa tawm hauv huab cua lossis hauv qhov chaw muaj cua txaus. Tsis txhob haus luam yeeb thaum pleev xim nrog cov kua roj vanish. Yog tias cov kua roj vanish tau ntawm daim tawv nqaij, nws yuav tsum tau so nrog daim ntaub los yog daim ntaub ntub, xab npum thiab yaug nrog dej kom huv.
Yog tias cov kua roj vanish nkag rau hauv lub qhov muag, nws yog fraught nrog kev tu siab rau txim. Hauv qhov xwm txheej zoo li no, nws yog ib qho tseem ceeb kom yaug cov hnoos qeev nrog dej sai. Tom qab ntawd, koj yuav tsum tau mus ntsib kws kho qhov muag.
Txhawm rau ua kom muaj kev nyab xeeb, nws raug nquahu kom pleev xim nrog cov kua roj vanish, hnav tshwj xeeb thiab tiv thaiv koj lub qhov muag nrog tsom iav tshwj xeeb, thiab koj txhais tes nrog hnab looj tes tuab. Thaum raug xwm txheej los ntawm kev siv cov xim pleev xim rau hauv lub plab, koj yuav tsum tam sim mus rau tom tsev kho mob. Hauv qhov xwm txheej zoo li no, nws raug txwv tsis pub ua rau ntuav hauv tus neeg raug tsim txom.
Nws yog qhov yuav tsum tau siv cov kua roj vanish raws li cov lus qhia ntawm pob . Saib xyuas lub sijhawm kom qhuav. Dilute tsuas yog raws li qhia. Bituminous cov kua roj vanish yog qhov tseeb ua kom sib xyaw ua ke. Tawm yooj yim cov xau me ntsis ntawm cov khaub ncaws thiab tawv, cov kua roj vanish raug tshem tawm los ntawm kev ua nrog roj av. Thiab kuj yog dab dawb yog qhov tsim nyog rau qhov no. Lub taub ntim nrog cov kua roj vanish yuav tsum cia kom deb ntawm hluav taws kom tsis txhob ua kom sov nws. Cov kua roj vanish tas sij hawm tsis haum rau siv. Nws yuav tsum tau siv dua tshiab.
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