Ruide Polyurethane Waterproof Txheej

 Polyurethane ru tsev xim yog ib qho kev ua tau zoo - txheej txheej dav siv rau kev tiv thaiv dej, tiv thaiv thiab kev zoo nkauj ntawm lub ru tsev. Ua los ntawm polyurethane resin, txheej txheej no tau qhuas rau nws cov kav ntev zoo, huab cua tsis kam thiab yoog raws. Nws muaj txiaj ntsig tshwj xeeb hauv kev siv vaj tse thiab kev lag luam uas yuav tsum muaj kev tiv thaiv ntev ntev. Kev kho ntawm cov xim polyurethane yog tus ntoo khaub lig- txuas network qauv tsim los ntawm cov tshuaj tiv thaiv ntawm isocyanate thiab hydroxyl compounds, uas muab cov txheej txheem muaj zog hnav tsis kam, compression resistance thiab ductility. Polyurethane ru tsev xim muaj qhov zoo corrosion tsis kam rau ntau yam tshuaj (xws li acids, alkalis, roj, kuab tshuaj, thiab lwm yam), yog li nws tuaj yeem tiv taus cov kev xav tau ntawm thaj chaw muaj kev lag luam thiab thaj chaw muaj kuab paug hnyav.

1. Kev ua tau zoo ntawm cov dej tsis zoo

2. Muaj zog tiv taus huab cua

3. UV tsis kam

4. Zoo elasticity thiab ductility

5. Zoo tshuaj corrosion kuj

6. Zoo heev adhesion

7. Abrasion tsis kam

8. Lub neej ua haujlwm ntev

9. High oxidation tsis kam

10. Kev zoo nkauj thiab kev tiv thaiv ib puag ncig

11. Anti-permeability thiab kub tsis kam

Tsis txhob siv rau hauv nag, huab cua txias heev lossis kub kub. Tsis tshua muaj kub (qis dua 5 degree) yuav ncua lub sij hawm kom qhuav thiab tej zaum yuav cuam tshuam rau adhesion ntawm txheej. Qhov kub siab dhau (txog 35 degree) yuav ua rau cov txheej txheem kom qhuav sai heev thiab tsim cov txheej tsis sib xws.

Qhov zoo tshaj plaws ntawm daim ntawv thov kub yog 5℃rau 35 degree, thiab cov txheeb ze av noo yuav tsum tsawg tshaj li 85% kom tsis txhob muaj high humidity cuam tshuam lub curing ntawm txheej.

Qhov piv ntawm polyurethane txheej thiab curing tus neeg sawv cev yuav tsum nruj me ntsis raws li cov kev cai ntawm cov lus qhia. Ntau dhau los yog tsawg dhau los kho tus neeg sawv cev yuav cuam tshuam rau qhov zoo thiab cov nyhuv ntawm txheej.

Tom qab txheej txheej tiav lawm, tsis txhob raug huab cua tam sim ntawd, xws li los nag hnyav, cua txias, thiab lwm yam.

Polyurethane coatings feem ntau siv qee lub sij hawm los kho tag nrho, thiab tsuas yog muab tso rau hauv kev siv tom qab lawv kho tag nrho.

Polyurethane coatings reacts yooj yim nrog noo noo, yog li thaum lub sij hawm thauj mus los, lawv yuav tsum tau tiv thaiv los ntawm nag thiab noo noo thiab them nrog waterproof tarpaulins. Siv cov thawv ntim khoom uas ua tau raws li cov qauv ntim khoom rau cov khoom txaus ntshai (feem ntau yog cov thawv hlau lossis cov thawv yas tshwj xeeb), thiab cov ntim khoom yuav tsum muaj kev sib khi zoo los tiv thaiv kev xau. Cov xim yuav tsum tsis txhob sib xyaw nrog cov tshuaj xws li acids, alkalis, thiab oxidants kom tsis txhob muaj tshuaj lom neeg. Cov xim polyurethane tuaj yeem ua rau tus kheej - cov tshuaj tiv thaiv polymerization hauv qhov kub thiab txias, thiab tseem tuaj yeem ua rau muaj kev phom sij tawg. Yog li ntawd, yuav tsum tsis txhob muaj qhov kub thiab txias thaum lub sij hawm thauj mus los, tshwj xeeb tshaj yog nyob rau hauv high kub nyob rau hauv lub caij ntuj sov, thiab kev ntsuas cua txias yuav tsum tau ua (xws li kev thauj mus los hmo ntuj, npog nrog cov cua sov- cov ntaub ntawv insulating, thiab lwm yam). Nws raug pom zoo tias kev thauj mus los ib puag ncig kub tswj nyob rau hauv thaj tsam ntawm 5℃~ 35 degree. Txhua lub tsheb thauj cov xim polyurethane yuav tsum tau nruab nrog cov hluav taws xob tua hluav taws txaus, feem ntau yog cov hmoov tua hluav taws qhuav lossis cov roj carbon dioxide tua hluav taws.

Cov kub kub yuav ua rau kom cov kuab tshuaj evaporation, ua rau cov xim pleev xim thiab txawm tias tus kheej -polymerization; qhov kub thiab txias yuav ua rau kom cov viscosity ntawm cov xim los yog ua rau nag lossis daus. Cov huab cua noo yuav tsum tau tswj kom qis dua 75% kom tsis txhob ya raws los ntawm kev nkag mus rau hauv lub thawv thiab reacting nrog cov khoom nyob rau hauv cov xim polyurethane, uas ua rau curing los yog deterioration. Cov xim polyurethane feem ntau yog ntim rau hauv cov thawv hlau lossis cov yas tshwj xeeb. Cov thawv no yuav tsum muaj cov khoom sib khi zoo los tiv thaiv cov kuab tshuaj evaporation lossis kev sib cuag nrog huab cua. Sab hauv phab ntsa ntawm lub thoob hlau yuav tsum tau coated nrog anti- txheej corrosion los tiv thaiv cov xim los ntawm corroding lub thawv thiab txuas lub neej kev pab cuam ntawm lub ntim ntim. Polyurethane txheej feem ntau muaj lub neej txee (feem ntau yog 6 txog 12 lub hlis). Tom qab lub txee lub neej, cov txheej yuav nce viscosity, precipitate, thiab delaminate. Kev ntsuas kev ua tau zoo yog xav tau thiab nws tsuas yog siv tau tom qab nws tau lees paub tias tsim nyog.

Rau ob-cov khoom siv polyurethane txheej (tus neeg saib xyuas tseem ceeb thiab tus neeg sawv cev kho), tus neeg sawv cev tseem ceeb thiab tus neeg sawv cev kho yuav tsum tau muab cais tawm kom tsis txhob sib tsoo thiab sib tov. Lub thawv tshuaj tua kab yuav tsum tau siv kom sai li sai tau tom qab qhib, thiab qhov tsis siv yuav tsum tau muab ntim nrog cov roj inert (xws li nitrogen) los tiv thaiv nws los ntawm kev ua pa nrog ya raws hauv huab cua.

Cim npe nrov: ruide polyurethane waterproof txheej, Tuam Tshoj ruide polyurethane waterproof txheej manufacturers, lwm tus neeg, Hoobkas