Polyurethane varnish - kayan aiki na yau da kullum

Ci gaban fasaha na zamani don samar da kayan aiki yana samar da sabon samfurori da sabon samfurori waɗanda ke da ƙididdiga masu yawa. Irin waɗannan litattafan sun hada da polyurethane varnish.

Wannan abu abu ne daban-daban na maganin maganin da ake ciki na polycyctional polyxy-fatal hydroxyl. Maganin polyurethane lokacin da ake amfani dasu yana samar da polymer mai karfi akan farfajiya tare da tsari uku. Wannan tsari ne saboda amsawar isocyanates tare da kayan haɗarin hydroxyl (wadanda ba su cika ba da sunadarai da aka samu ta hanyar maganin wuce gona da iri na polyhydric barasa tare da dibasic acid ko tare da gauraye na monobasic da dibasic m acid).

Sau da yawa an yi amfani da polyvinyl acetates, wasu nau'in polyacetals, cellulose ethers, phenol formaldehyde da xylene-formaldehyde resins. Daga cikin isocyanates da ake amfani dasu mafi sau da yawa ana amfani da toluiso diisocyanate da sauran gauraya daban-daban. Har ila yau, amfani da hexamethylene diisocyanate da kuma dauki kayayyakin wuce haddi diisocyanate tare da wani polyhydric barasa da kuma hydroxyl dauke da polyesters. Yin aiki tare da waɗannan abubuwa yana buƙatar kariya ta musamman. Wannan shine dalilin da ya sa ya fi dacewa a yi amfani da isocyanates da aka "katange" ko "boye", waxanda suke da mahaukaci waɗanda ke raguwa da sauri lokacin da suke mai tsanani. Wannan rukuni ya hada da samfurori na mayecyanates tare da malonate, acetoacetic ether, ethyleneimine da phenylurenhane. Polyurethane lacquers narkar da yin amfani da esters, ketones, magni hydrocarbons, nitroparaffins. Maganin wadannan wakilai shine xylene, toluene, hydrocarbon aliphatic.

Ana samun nau'o'in polyurethane a cikin nau'i-nau'i guda ɗaya ko abu guda biyu. A cikin akwati na biyu, an shirya wani bayani mai mahimmanci da aka shirya na mahadi masu dauke da hydroxyl ko haɗuwa da wadannan mahadi da mafita isocyanate kafin amfani da wannan wakili. Irin wannan lacquer da aka shirya guda biyu ana adana shi zuwa 4 zuwa 48. Ana yin amfani da wannan sutura don zafi da sanyi. Rikicin lakabobi masu mahimmanci guda daya wanda aka yi akan abin da ake kira "blocked" isocyanates ana daukan su zama marasa ƙarfi.

Polyurethane varnish siffofin m, kayan ado mai tsabta tare da tsananin ƙarfin hali, adhesion mai kyau, abubuwa masu yawa na lantarki da kuma juriya. Ana amfani da su don kare kaya, karfe, na katako, kuma ana amfani dasu don kayan aikin zane-zane a fannonin sinadaran, kayan aiki da man fetur, a wuraren samar da abinci.

Samuwa polyurethane varnish for parquet, furniture, roba, takarda, fata, sojan ruwa constructions, roba yadudduka da kuma robobi. Wannan shafi yana da matukar amfani kuma yana da amfani, hakan yana ƙara inganta rayuwa mai ɗorewa na kayan aiki. Ana amfani da sutura guda daya don kare jan ƙarfe, aluminum da samfurori.

Lacquer polyurethane ruwa na kare katako ganuwar da ceilings daga fungi da mold. Ya isasshen haske da zafi. Wannan shinge mai haske yana ba ka damar tabbatar da kyakkyawan kyawawan kayan itace.