Kaphatikizidwe Kwa UV Ochiritsika Madzi Omwe Amakhala ndi Polyurethane Acrylate Coatings Chithunzi

Kuphatikizika Kwa zokutira za UV Zochiritsira za Polyurethane Acrylate

Kufotokozera Kwachidule:

Kupaka kwa Uv-wpua kumapangidwa ndi oligomer, photoinitiator, diluent yogwira ntchito, ndi zina zotero. Oligomer ndi gawo lofunika kwambiri pakuphimba kwa uv-wpua.Kapangidwe kake kumatsimikizira zinthu zofunika za filimu yochiritsa ya UV, monga kuuma, kusinthasintha, kukana kuvala, kukana madzi komanso kukana dzimbiri.Photoinitiator ndi gawo lofunikira la machiritso a UV, omwe amathandizira kwambiri pakukhudzidwa kwa machiritso a UV komanso amakhudzanso ntchito yomaliza ya filimu yochiritsidwa.Kupaka kwa UV-wpua kumagwiritsa ntchito madzi ngati osungunulira, omwe amachepetsa kwambiri kugwiritsa ntchito zosungunulira za organic.

Titumizireni imelo

Tsatanetsatane wa Zamalonda

Zolemba Zamalonda

Kuphatikizika kwa Waterborne Polyurethane Acrylate

Oligomer mu zokutira za uv-wpua ndi wpua, yomwe ndi gawo lalikulu la zokutira.Wpua nthawi zambiri imapangidwa ndi polyisocyanate, diol ndi hydroxyl acrylate.Ma Isocyanates amaphatikiza ma isocyanates onunkhira, aliphatic isocyanates ndi alicyclic isocyanates, omwe amakhudza kulimba, kukana kwanyengo komanso kukana kwachikasu kwa wpua.Ma diol makamaka amaphatikiza ma polyether diol ndi ma polyester diol, omwe amakhudza kulimba kwamphamvu, kufewa, kukana kutentha ndi kukana kwa hydrolysis kwa wpua.
Gulu la - NCO mu polyisocyanate limakumana ndi gulu la hydroxyl la diol kupanga oligomer yokhala ndi magulu a isocyanate pamapeto onse awiri.2. 2,2-dihydroxymethylpropionic acid (DMPA) imagwiritsidwa ntchito ngati diol kuyambitsa magulu a hydrophilic mu oligomer, ndipo 1,4-butanediol (BDO) ikuwonjezeredwa kuti iwonjezere unyolo;3. Hydroxyethyl acrylate (HEA) idagwiritsidwa ntchito poyambitsa zithunzi zogwira ntchito zomwe zili ndi zomangira ziwiri zopanda unsaturated kuti machiritso a UV.Pambuyo pakuchita masitepe atatu, triethanolamine (teoa) imawonjezedwa kuti iwonongeke, ndipo pamapeto pake madzi amawonjezeredwa kuti asungunuke kukhala odzola.
Akatswiri ena apanga uv-wpua ndi ntchito yabwino kwambiri pogwiritsa ntchito zida zopangira monga Polyhexylene glycol, isophorone diisocyanate, PETA, ndi dimethylbutyric acid (DMBA).Mitundu itatu ya wpua idapangidwa kuchokera ku polyacrylate yokonzedwa ndi gulu la carboxyl mu unyolo wam'mbali, polyether polyol, isophorone diisocyanate ndi hydroxyethyl acrylate.Pambuyo pofufuza mwatsatanetsatane za kuyesa kwa thupi ndi kuyesa kwa ntchito, zimaganiziridwa kuti ntchito yonse ya polyether wpua ndi yabwino.Pogwiritsa ntchito toluene diisocyanate, polyhexanediol, 2,2-dihydroxymethylpropionic acid ndi hydroxyethyl methacrylate monga zopangira, prepolymer inayamba kupangidwa, ndiye triethylamine anawonjezeredwa ngati neutralizing agent, ndipo madzi ankagwiritsidwa ntchito ngati chain extender kumwazikana m'madzi kuti apange wpua yokhazikika.