Polyurethane enamel: kufotokoza, makhalidwe, mitundu, ntchito

Kuteteza malowa kuchokera ku zisonkhezero zoipa, kuphatikizapo mlengalenga, polyurethane enamel imagwiritsidwa ntchito mwakhama lero, yomwe imaperekedwa kugulitsidwa mosiyanasiyana. Kusakaniza ndi mitundu yosiyanasiyana ya ma polima omwe ali ndi zotetezera. Ngati mukufanizira izi ndi zojambula zina, ndiye kuti polyurethane enamel sangathe kufanizitsa njira ina iliyonse. Kawirikawiri, izi zimagwiritsidwa ntchito ngati chophimba choteteza, chifukwa filimuyo ili ndi chitetezo chokwanira.

Chiwerengero cha ma poamondi a polyurethane

Zosakaniza za polyurethane zimasankhidwa malinga ndi zinthu zomwe ziyenera kuvala, komanso mtundu wa ntchito ndi zolemba. Gwiritsani ntchito burashi kapena wothandizira wapadera wa aerosol kuti mugwiritse ntchito. Malo ogwiritsira ntchito polyurethane enamel ndi ochuluka mokwanira, mitundu yosiyanasiyana ingagwiritsidwe ntchito pa miyala, matabwa kapena zitsulo. Musanagwiritse ntchito polyurethane osakaniza, nkhuni siziyenera kuyesedwa, zimangokhala zouma bwino.

Zolemba zamakono

Puloteniyamu yowonjezera chigawo chimodzi ndizopanga zomwe zimapangidwa ndi polyurethane, pigment ndi solvent. Zina mwa zikuluzikulu za izi zosakaniza ziyenera kukhala:

• Kusintha;
• Kusakaniza;
• Zopanda phindu pambuyo pa evaporation ya zosungunulira;
• Mankhwala okhazikika.

Polyurethane imaphatikizapo kumamatira kwathunthu kumalo ovuta kwambiri.

Mitundu ya polyurethane enamels

Polyurethane enamel ikhoza kukhala madzi okwanira. Zina mwa ubwino ndi zopanda pake pa malo osokoneza komanso mwayi wokhala ndi madzi wamba. Maofesi amtundu wotentha amaoneka ngati osakonzedwa. Izi zikuphatikizapo konkire, chitsulo chosapanga ndi pulasitiki.

Polyurethane imayimilidwa ndi kusintha kodabwitsa kwa mankhwala komwe kumalola kuti chiwerengerocho chizisungidwe ngati kupezeka kwa madzi kosabalalitsa. Izi zimapangitsa chophimba cholimba, chosavala. Ngati kuli kofunika kupenta pansi mu chipinda chowonetsera, tikulimbikitsidwa kuti tipange zomwe zimapangidwa ndi zinthu zowonongeka.

Polyurethane enamel pa zitsulo zamagulu

Polyurethane enamel ingapangidwe pamaziko a zinthu zowonongeka, mwachitsanzo, xylene kapena toluene. Kuti mupulumuke, ndi bwino kugwiritsa ntchito mankhwala owerengeka, omwe akulimbikitsidwa ndi wopanga. Pambuyo pa mphamvu, yomwe imatenga masiku awiri, kuvala uku kumapeza mikhalidwe yotchedwa ubwino waukulu: kusungunuka, kukana madzi, kukana malo oopsa.

Mapuloteni a polyurethane amatha kukhala alkyd-urethane, amagwiritsidwa ntchito popanga chofunda chokwera komanso chokhazikika chomwe chimapuma pang'onopang'ono. Mtengo wa zosakaniza zoterewu ndi wochepa kwambiri poyerekeza ndi imodzi-zigawo zikuluzikulu za urethane enamels.

Mafotokozedwe a ma-enamel awiri omwe amapangidwa ndi polyurethane

Enamel polyurethane zigawo ziwiri zimakhala zolimba ndi kosalambula, zomwe zoyambazo zimawonjezeredwa kusanagwiritsidwe ntchito. Kusakaniza kumakhala kosatha kwa maola atatu, ndipo kuyanika kumatenga maola 6. Mtengo wa nkhaniyi ndi wamtali, monga momwe zilili mphamvu yophimba. Ma polyurethane enamel a zitsulo angagwiritsidwe ntchito pa zitsulo, zomwe zidzasungidwa mu zochitika zomwe zimagwiritsidwa ntchito ndipo zimagwiritsidwa ntchito m'masitolo otentha ndi mlengalenga.

Kumapeto kwa kutentha kwa ntchitoyi ndiko +80 ° C ndipo kumatha kufika 100 ° C. Ngati pali chofunikira kuphimba chida, chomwe chidzagwiritsidwe ntchito pamoto woopsa, ndiye kuti muyenera kupeza mankhwala apadera. Mwachitsanzo, penti pazitsulo "Polystyl" yomwe imayikidwa ndi kutentha imapanga mpweya wa mpweya, womwe umateteza ndi kuyatsa moto mpaka maola 1.5.

Kugwiritsa ntchito polyurethane enamel "Elakor-PU"

Ngati mukufunikira primer-polyurethane enamel, samverani "Elakor-PU", omwe mtengo wake uli pa makilogalamu 275. Gwiritsani ntchito chigawochi chiyenera kukhala pansi pa zifukwa zina, zomwe zimasonyezedwa kuti palibe madzi omwe amachokera m'munsimu. Ndifunikanso kukhala ndi maziko osungira madzi. Kutsala kwa chinyezi cha pamwamba sikuyenera kupitirira 5%. Musanagwiritse ntchito mapangidwewa, pamwamba pake pamachotsa malo ouma. Ngati ili ndi maziko a konkire, ndiye kuti iyenera kukhala mchenga pogwiritsa ntchito makina apadera kuchotsa zotsalira za utoto wakale, udothi ndi simenti.

Musanagwiritse ntchito polyurethane enamel ya konkire, pamwamba pake muyenera kukhala phulusa ndi mafakitale ogwiritsira ntchito zowonongeka, ndipo kenaka ndiphimbidwa ndi chopanga kuchokera kumapanga omwewo. Musanagwiritse ntchito, chisakanizocho chimasakanikirana bwino, ndipo chiyenera kugwiritsidwa ntchito ndi pulojekiti ya polyamide m'magawo anayi. Chiwerengero chochepa cha zigawo ndi 2, nambala yokwanira idzadalira ntchito yomwe ikutsatiridwa. Pakati pa zigawo, dikirani pafupi maola 4-8.

Kugwiritsa ntchito enamel kwa konkire "Elakor-PU Enamel-60"

Enamel imeneyi ndi mankhwala osakaniza amadzimadzi omwe amachiritsa chinyezi, omwe ndi opindulitsa kwambiri pogwiritsa ntchito kutentha. Pambuyo poyambitsa polymerization, chovala chosagwira pulasitiki polima pamtunda, chomwe chidzakhala cholimba.

Kukonzekera kumaphatikizapo kuyeretsa ndi kuyang'ana pamwamba, yomwe imakhala yotsekedwa ndi enamel kutentha kuchokera -30 mpaka +25 ° C. Kutentha kwa nkhaniyo kumatha kusiyana ndi +10 mpaka +25 ° C. Ndikofunika kuganiziranso kutentha kwapadera kwa mlengalenga, sikuyenera kupitirira 80%. Asanayambe kugwira ntchito, mawonekedwewa akusakanizidwa mpaka uniform mu mtundu ndi kusasinthasintha. Kuti muchite izi, mutha kugwiritsa ntchito chosakaniza pazithunzi, zomwe zimayendetsedwa pa liwiro la 400 mpaka 600 pa mphindi.

Pogwira ntchito, mungagwiritse ntchito ma rollers kapena maburashi omwe sagwirizana ndi solvents. Mankhwala osokoneza bongo angagwiritsidwe ntchito. Mmodzi wosanjikiza, malo ake ndi mita mita, amatenga pafupifupi magalamu 150 a enamel. Chotsatira chomaliza chidzadalira kulemera kwa pamwamba. Kuphika wosanjikiza kumakhala nthawi yofanana monga momwe tafotokozera pamwambapa.

Kutsiliza

Ngati mwasankha kugwiritsa ntchito makina awiri a polyurethane, muyenera kulingalira kuti ntchito yake sichikuchitika pa malo ozizira. Izi zimachitika chifukwa chowumitsa thupicho chidzachita ndi madziwa potulutsa mpweya wa carbon dioxide, umene umalimbikitsa kuphulika kwa pamwamba.