Kemikari yeUV inofambiswa nemvura (WB) yakaratidza kukura kukuru mumisika yemiti yemumaindasitiri nekuti tekinoroji iyi inopa kushanda kwakanaka, kuburitsa mvura shoma uye kuwedzera kushanda zvakanaka kwekugadzira. Masisitimu eUV coating anopa mushandisi wekupedzisira mabhenefiti ekudzivirira makemikari nekukwenya kwakanaka, kudzivirira mabhuroko kwakanaka, maVOC mashoma uye nzvimbo diki yemidziyo isina nzvimbo yakawanda yekuchengetera inodiwa. Masisitimu aya ane hunhu hwakafanana nehurongwa hwe urethane hune zvikamu zviviri pasina matambudziko e crosslinkers ane njodzi uye matambudziko ehupenyu hwehari. Sisitimu yese inodhura zvishoma nekuda kwekumhanya kwekugadzira kwakawedzera uye mitengo yakaderera yesimba. Mabhenefiti aya anogona kubatsira kune zvinoshandiswa kunze zvinoshandiswa mufekitori zvinosanganisira mahwindo nemasuo, siding uye mamwe mabasa ekugadzira. Aya makambani anoshandisa acrylic emulsions uye polyurethane dispersions nekuti ane gloss yakanaka uye kuchengetedza mavara, uye anoratidza kugara kwenguva refu. Muchidzidzo ichi, polyurethane-acrylic resins ine UV functionality yakaongororwa zvichienderana nezvinodiwa neindasitiri yekushandiswa kwemiti yemumaindasitiri mukati nekunze.
Mhando nhatu dzemachira anonyungudutsa anoshandiswa mukushandiswa kwematanda emaindasitiri. Nitrocellulose lacquer inowanzo kuve musanganiswa we nitrocellulose nemafuta kana maalkyd ane mafuta mashoma. Machira aya anooma nekukurumidza uye ane simba guru rekupenya. Anowanzo shandiswa mukushandiswa kwefenicha yekugara. Ane dambudziko rekuti anotsvuka nekufamba kwenguva uye anogona kupwanyika. Haanawo simba rekudzivirira makemikari. Malacquer eNitrocellulose ane maVOC akakwira kwazvo, anowanzova 500 g/L kana kupfuura. Malacquer ePre-catalyzed musanganiswa we nitrocellulose, mafuta kana maalkyd ane mafuta, maplasticizer uye urea-formaldehyde. Anoshandisa weak acid catalyst senge butyl acid phosphate. Machira aya anogara kwemwedzi mina. Anoshandiswa muhofisi, mumasangano uye mudzimba. Malacquer ePre-catalyzed ane simba rekudzivirira makemikari kupfuura malacquer eNitrocellulose. Anewo maVOC akakwira kwazvo. Mavarnish ekuchinja musanganiswa wemafuta, urea formaldehyde uye melamine. Vanoshandisa chinhu chine acid yakasimba senge p-toluene sulfonic acid. Vanogona kugara muhari kwemaawa makumi maviri nemana kusvika makumi mana nemasere. Vanoshandiswa mumakabati ekicheni, fenicha yehofisi uye mumidziyo yekugara. Mavarnish ekushandura ane hunhu hwakanakisa hwemhando nhatu dzemachira anoshandiswa pakugadzira matanda emuindasitiri. Ane maVOC akawanda uye formaldehyde emissions.
Mapurasitiki e-acrylic anozvibatanidza ega uye polyurethane dispersions anogona kuva nzira dzakanaka dzekushandisa matanda emaindasitiri panzvimbo pezvinhu zvakagadzirwa ne solvent. Mapurasitiki e-acrylic anopa simba rakanaka rekudzivirira makemikari nema block, simba repamusoro rekuoma, kugara kwenguva refu uye kugadzikana kwemamiriro ekunze, uye kunamira kwakanaka panzvimbo dzisina maburi. Ane nguva yekuoma nekukurumidza, zvichiita kuti makabati, fenicha kana mugadziri wezvigadzirwa zvekuvaka abate zvikamu nguva pfupi mushure mekushandisa. MaPUD anopa simba rakanaka rekudzivirira kukwenya, kuchinjika, uye kuramba kukwenya nekupwanya. Anoshanda zvakanaka mukubatanidza ne acrylic emulsions kuti avandudze hunhu hwemakanika. Mapurasitiki e-acrylic nePUDs ese anogona kuita nemakemikari anobatanidza akadai se polyisocyanates, polyaziridine kana carbodiimides kuti aumbe 2K coatings ine hunhu hwakavandudzwa.
Mapendi eUV anorapika nemvura ave sarudzo dzakakurumbira dzekushandiswa kwematanda emaindasitiri. Vagadziri vemakabati ekicheni nefenicha vanosarudza mapendi aya nekuti ane simba rekudzivirira kupisa uye hunhu hwemakanika, hunhu hwakanaka hwekushandisa uye hunhu hushoma hwe solvent. Mapendi eWB UV ane simba rekudzivirira kupisa nekukurumidza mushure mekugadziriswa, izvo zvinoita kuti zvikamu zvakaputirwa zviunganidzwe, zvirongedzwe uye zvitumirwe kubva pamutsetse wekugadzira pasina nguva yekugadzirwa kwekuomarara. Kukura kwekuomarara muWB UV coating kunoshamisa uye kunoitika mumasekonzi mashoma. Kudzivirira kwemakemikari uye mavara eWB UV coatings kwakanaka kupfuura kwevarnishes inoshanduka kubva mu solvent.
MaWB UV coatings ane mabhenefiti akawanda. Kunyange zvazvo maUV oligomers akasimba 100% achiwanzova ne viscosity yakakwira uye anofanirwa kuderedzwa ne reactive diluents, maWB UV PUDs haana viscosity yakakwira, uye viscosity inogona kugadziriswa ne WB rheology modifiers yechinyakare. MaWB UV PUDs ane huremu hwemamorekuru pakutanga uye haavaki huremu hwemamorekuru sezvo achiporesa zvakanyanya se100% maUV coatings akasimba. Nekuti haana kuderera zvakanyanya kana kuti haana kusimba paanenge achiporesa, maWB UV PUDs ane kunamira kwakanaka kune akawanda ma substrates. Kupenya kwemapendi aya kunodzorwa zviri nyore ne matting agents echinyakare. Mapolymers aya anogona kuoma asi zvakare anochinjika zvakanyanya, zvichiita kuti ave akakodzera mapendi ekunze ehuni.
Nguva yekutumira: Kurume-07-2024
