Polyurethane varnish - masiku kuwamaliza zakuthupi

Chitukuko cha umisiri wamakono kwa kupanga zipangizo liza amalola kuti apange zonse watsopano mankhwala angapo wapadera katundu. novelties amenewa likukhudza polyurethane lacquer.

Nkhanizi akuimira njira zosiyanasiyana zikuchokera isocyanates hydroxyl polyfunctional. Polyurethane lacquer pamene ntchito njira padziko polima wolimba ndi dongosolo atatu azithunzi omwe tikunena. ndondomeko izi zimachitika chifukwa zimene isocyanates ndi zigawo hydroxyl (chosakwanira polyesters akamagwira zimene ndi owonjezera mowa polyhydric acid ndi dibasic kapena ndi zosakaniza wa monobasic ndi dibasic mafuta zidulo).

Nthawi zambiri ntchito ndi pang'ono hydrolyzed polyvinyl acetates, polyacetals chosakwanira, mapadi esters, ndi phenol-formaldehyde utomoni ksilolformaldegidnye. Pakati pa isocyanates ntchito zambiri ntchito diisocyanate ndi zosakaniza zosiyanasiyana zace. Komanso, ntchito hexamethylene diisocyanate ndi mankhwala anachita a diisocyanate owonjezera ndi wa mowa polyhydric ndi hydroxyl munali polyesters. Kugwira ntchito ndi zipangizo amafuna mosamala wapadera. Choncho bwino kugwiritsa ntchito "oletsedwa" kapena "zobisika" isocyanates, mankhwala amene mosavuta linakwiriridwa pamene mkangano. gulu Izi zikuphatikizapo mankhwala anachita a isocyanates ndi malonic, acetoacetic Ester, ethyleneimine ndi feniluretanom. Polyurethane lacquers kusungunuka ntchito esters, ketones, chlorinated chimasanduka, nitroparaffins. Izi zida diluent ndi xylene, toluene, aliphatic hydrocarbon.

Polyurethane lacquers zilipo ngati mmodzi chigawo chimodzi kapena ziwiri zikuluzikulu nyimbo. Ngati chachiwiri payokha anakonza njira ya mankhwala hydroxyl munali, kapena zosakaniza mankhwala awa ndi njira isocyanate musanagwiritse ntchito wothandizila uyu ali osokonezeka. Chotero okonzeka ziwiri zikuluzikulu lacquer kusungidwa kwa maola 4 mpaka 48. zokutira amenewa ntchito ❖ kuyanika wa otentha ndi ozizira yochiritsa. MALIRE ankaona khola limodzi chigawo wosachedwa kuchiritsa zokutira anapanga pamaziko a otchedwa "oletsedwa" isocyanates.

Polyurethane varnish ndipamene glossy, zokutira zotanuka ndi kuuma mkulu, guluu wolimba wabwino, mkulu katundu dielectric ndi kukana mankhwala. Iwo ayamba ntchito pofuna kuteteza konkire, zitsulo, matabwa kali ndi ntchito penti zida za mankhwala, yadothi ndi kuyenga zomera, pa mabizinezi chakudya.

Mukhozanso polyurethane varnish kwa parquet, mipando, labala, pepala, chikopa, zomangamanga panyanja, nsalu angapange ndi mapulasitiki. ❖ kuyanika Ichi ndi cholimba kwambiri ndi zothandiza, izo kwambiri kumawonjezera alumali moyo zinthu zosiyanasiyana. Chimodzi-chigawo zokutira Mankhwalawa amagwiritsidwa ntchito pofuna kuteteza zamkuwa, zitsulo zotayidwa ndi zitsulo mankhwala.

Varnish polyurethane madzi amateteza makoma matabwa ndi kudenga la nkhungu ndi cinoni. Ndi ndithu kuwala ndi kutentha zosagwira. Izi ❖ kuyanika mandala amalola mwangwiro kuunikila okongola a mtengo.