Thaum peb ua qee txoj haujlwm sib khi, peb yuav xaiv cov nplaum sib txawv, tsuav nws tuaj yeem lo thiab lo khov kho. Cov nplaum polyurethane thiab cov nplaum epoxy tseem yog cov nplaum, tab sis peb yuav tsum txawv lawv ua ntej siv. Dab tsi yog qhov txawv ntawm ob?
1. Cov nplaum nplaum Polyurethane muaj qis me ntsis kev sib txuas lub zog thiab yooj yim kom daj, tab sis nws hnav tsis kam thiab tawv kuj muaj feem ntau. Ib qho kev tivthaiv tuaj yeem ua kom noo-kho nyob rau hauv chav tsev sov, thiab qhov yuav tsum tau muaj tsawg dua. Epoxy cov nplaum muaj qhov sib xyaw ua kom muaj zog thiab shear lub zog, thiab lawv muaj ntau hom kev siv. Lawv tuaj yeem sib khi cov ntaub ntawv feem ntau tsuas yog polyolefin cov ntaub ntawv, thiab hu ua universal adhesives. Cov txheej txheem tiv thaiv epoxy nplaum yuav tsum muaj kev kub siab dua thiab yuav xav tau cua sov lossis kho mob tshwj xeeb.
2. Ob qho khoom ua polyurethane nplaum ua raw cov ntaub ntawv thiab epoxy resin cov nplaum ua raw cov ntaub ntawv yog cov tshuaj lom. Piv txwv li, cov tshuaj tua kab mob polyurethane feem ntau yog isocyanates, uas muaj kev ua haujlwm siab thiab muaj kev phom sij rau tib neeg ob lub raum. Lub organotin hauv catalyst yog cov tshuaj lom lossis ua kom muaj tshuaj lom. Amine curing cov neeg sawv cev hauv epoxy resin cov nplaum ua kom zoo kuj yog cov tshuaj lom, thiab cov tshuaj tiv thaiv reactive cov tshuaj lom yog cov tshuaj lom lossis tshuaj lom los ntawm cov khoom nyoos. Txawm li cas los xij, cia peb taw qhia tias ob daim nplaum no cov hauv paus tsis muaj tshuaj lom tom qab kho, yog li nws tsis paub tseeb tias hom twg yog tsis muaj tshuaj lom, tab sis daim ntawv thov txawv me ntsis.
3. Muaj qhov sib txawv ntawm polyurethane adhesives thiab epoxy adhesives, tab sis kuj tseem muaj ntau qhov chaw sib txuam, xws li kev sib khi ntawm cov ntoo, pob zeb, hlau, thiab fiberglass hauv cov khoom siv hauv tsev. Cov qub tuaj yeem siv rau cov uas muaj qhov yuav tsum tau muaj siab tawv, xws li kev sib khi ntawm cov khau thiab cov khauj khau hauv kev lag luam khau. Epoxy nplaum yuav siv tau rau lub zog siab.
Yog li ntawd, tsuas yog tom qab peb paub qhov txawv ntawm cov nplaum polyurethane thiab epoxy nplaum, peb tuaj yeem xaiv cov nplaum tsim nyog los txhawm rau txhawm rau txhua yam khoom. Cov nplaum nplaum yog qhov sib txawv, yog li nyob hauv ntau txoj hau kev, lawv txawv.
