Bitumen cov kua roj vanish qhia nws secrets

Ntawm tag nrho ntau yam ntawm cov xim tsev bitumen muaj ib tug tshwj xeeb qhov chaw. Ib tug ob peb xyoos dhau los, nws siv tsis yeem sharply. Nws yog tsuas yog siv rau cov zauv qhov chaw ntawm lub tsheb. Tab sis tsis ntev los no muaj ib tug zam qauv nyob rau hauv lub tsim thaj chaw - dag laus. Thiab qhov kev thov rau bitumen cov kua roj vanish sawv rov qab.

ntau lawm nta

Thaum cov tub ntxhais ntawm qhov cuab tam yog bitumen. Tab sis kom cov tshuaj ntawm muaj tej yam specifications (e.g., ductility, Thaum tshav kub kub stability) twb ntxiv cob. Lawv yog cov ntawm ob hom: hluavtaws thiab tej yam ntuj tso. Cov yav tas muaj xws li tag nrho cov paub rosin. Ntawm cov tau hluavtaws faib xws resins li Kopal. Thaum lub sij hawm tsim txoj kev lub sib tov yog rhuab mus rau high kub (280 degrees), thiab ces txias thiab kuab tshuaj. Yav tas los, feem ntau cov feem ntau siv Turpentine, niaj hnub no nws yuav siv tau nyob rau hauv tas li ntawd mus hnyav, dawb ntsuj plig los yog ib tug sib tov ntawm cov Cheebtsam. Txawm li cas los, muaj ib tug bitumen cov kua roj vanish thiab roj-raws li. Feem ntau siv rau lub hom phiaj no linseed los yog Tung. Lawv ntxiv ntxiv ntsev ntawm fatty acids - manganese, cobalt, txhuas. Yog li ntawd nws puv bitumen cov kua roj vanish. Yuav hnub no yog tsis yooj yim.

Varnish bitumen: specifications

Daim ntawv thov ntawm tus bitumen cov kua roj vanish vim nws kev yam ntxwv. Peb yuav paub qhov txawv ntawm lawv xws li:

• plasticity;
• kuj rau siab kub thiab ntau cov tshuaj;
• ya raws kuj.

Ib txhia neeg ntseeg tias bitumen cov kua roj vanish muaj anti-xeb zog, uas yog vim li cas nws yog siv los tiv thaiv hlau cov khoom. Nyob rau hauv qhov tseeb no yog tsis muaj tseeb. Raug rau lub ntsiab nws yuav tiv thaiv tus kab xeb cia li ib tug me ntsis lub sij hawm. Yog li ntawd, nws daws cov khoom uas yuav tsum tau muaj kev tiv thaiv rau ib tug luv luv lub sij hawm - 6 lub hlis, yog hais tias tus ua yog nqa tawm los ntawm ib tug txheej ntawm lacquer. Siv lub cuab tam rau lub hom phiaj no yog piav lom zem ntau los ntawm lub fact tias nws yog cov uas tsis muaj nqi.

Bitumen cov kua roj vanish muaj ntau ntau ntau yam. Lub hauv paus ntawm lub kev faib no yog cov yooj yim zog ntawm cov compositions. Rau hnub tim, thov bituminous cov kua roj vanish BT-123, tus yam ntxwv uas ua rau nws tau siv nws tsis tsuas yog raws li ib tug tiv thaiv neeg sawv cev rau hlau thiab tsis-hlau lug. Feem ntau cov muaj pes tsawg leeg siv rau qhov siv thiab ua txhuas xim. Thaum zoo li no yog ntxiv kuj tshwj xeeb koom haum pab cov tshuaj uas leeb qhuav sai.

Bitumen cov kua roj vanish tsim

Cov nyhuv ntawm cov laus - ib tug txawv ib feem ntawm niaj hnub lub teb chaws lub tsev nyob. Thiab qhov no yog ib tug bitumen cov kua roj vanish yog lub ntsiab pab. Nyob rau saum npoo nws yog thov los ntawm txhuam los yog cov pa, los yog los ntawm txoj kev ib cov tshuaj tsuag. Lub thinner lub txheej, lub zoo dua cov. Thaum koj tsim tau cov nyhuv kev laus rau sab saum toj ntawm cov kua roj vanish nws yog pom zoo kom mus thov shellac txheej. Feem ntau, bitumen cov kua roj vanish siv rau cov kev kho mob ntawm sab nraud lug - ntseej, stairs, ntseej. Nws yuav tsum tau nco ntsoov tias twb siv qhov cuab tam yuav tsis tau nyob ze qhov hluav taws kub.

Bitumen cov kua roj vanish yog rightfully regained tus ua txoj hauj lwm nrog lawv zaj duab xis counterparts.