Polyurethane varnish - munhu ano okugadziridza zvinhu

Pokumuka michina ano kuti pagadzirwe vasapedze zvinhu inobvumira kuti pave zvose itsva uye zvitsva zvinogadzirwa nevanhu vanoverengeka nemamwe zvivako. novelties kwakadaro zvinoshandawo polyurethane lacquer.

Izvi zvinhu chinomirira yakasiyana sezvamunoita kugadzirisa zviri hydroxyl polyfunctional isocyanates. Polyurethane lacquer kana rikashandiswa siyana pamusoro pemvura hwakasimba polymer pamwe-dimensional matatu chivako. Izvi kunoitika nokuda zvakaitwa isocyanates pamwe hydroxyl zvinoriumba (kukwana polyesters yaunganidzwa zvakaitwa ane nekumwisa polyhydric doro ane dibasic asidhi kana wemisanganiswa pamusoro monobasic uye dibasic mafuta acids).

Aiwanzoshandisa uye zvishoma hydrolyzed polyvinyl acetates, kukwana polyacetals, cellulose esters, uye phenol-formaldehyde nebwe ksilolformaldegidnye. Pakati isocyanates kushandiswa anowanzodanwa kushandiswa diisocyanate uye wemisanganiswa siyana ayo. Uyewo, shandisa hexamethylene diisocyanate uye zvakaitwa zvigadzirwa yebongozozo diisocyanate pamwe ane polyhydric doro uye hydroxyl chine polyesters. Kushanda izvi zvinhu zvinoda chaidzo zvokungwarira. Saka zvakawanda anoshanda kushandisa "makavhara" kana "zvakavanzika" isocyanates, yeimwe ayo nyore yaora kana kupopotedzana. boka iri zvinosanganisira maitiro zvibereko isocyanates pamwe malonic, acetoacetic Ester, ethyleneimine uye feniluretanom. Polyurethane lacquers ichiputswa kushandisa esters, ketones, chlorinated Mahydrocarbon, nitroparaffins. Izvi Ezvemutauro diluent riri xylene, toluene, aliphatic yeHydrocarbon.

Polyurethane lacquers anowanikwa somunhu-chikamu kana maviri-chikamu nziyo. Kana yechipiri yoga akagadzirira mhinduro kubva hydroxyl tubhokisi yeimwe, kana wemisanganiswa kuti yeimwe izvi uye isocyanate mapedzero vasati kushandisa mumiririri uyu yakasananiswa. wakagadzirira maviri-chikamu lacquer kwakadaro kuchengeta kubva 4 kusvika 48 maawa. coatings kwakadaro inoshandiswa unhani inopisa uye kutonhora okurapa. Unlimited vaiona kugadzikana mumwe-chinoumba hot-kurapa coatings akaita maererano vanonzi "makavhara" isocyanates.

Polyurethane varnish unoumba munhu anokwezva, kwakavharwa nenyama coatings dzakakwirira zvakaoma, adhesion zvakanaka, matunhu dielectric zvivako uye nemakemikari nemishonga. Vari kuramba kushandiswa kuchengetedza kongiri, simbi, yematanda hukawanika uye rinoshandiswa kuti kupenda zvokushandisa kwemakemikari, simbi uye achinatsa miti, bhizimisi zvokudya.

Available polyurethane varnish nokuda parquet, fenicha, rabha, bepa, dehwe, wengarava zvakagadzirwa, machira chakaita zvokugadzirwa uye mapurasitiki. bemhapemha Izvi rakasimba zvikuru uye zvinoshanda, izvozvo anowedzera zvikuru pasherefu upenyu Kwakashandiswa micheka. Mumwe-chikamu coatings inowanzoshandiswa nokuda inodzivirira hwemhangura, aruminiyamu uye simbi zvigadzirwa.

polyurethane mvura Varnish kunochengetedza yematanda masvingo uye ceilings chakuvhuvhu nokuora. Hazvina chiedza zvikuru uye nokupisa nemishonga. Izvi läpinäkyvä bemhapemha ambotirega zvakakwana pfungwa runako huni.