Ni uruhe ruhare rwa hydroxyethyl selulose muri coatings!

Hydroxyethyl Cellulose ni iki?

Hydroxyethyl selulose (HEC), umuhondo wera cyangwa urumuri rwumuhondo, impumuro nziza, idafite ubumara bwa fibrous cyangwa powdery ikomeye, yateguwe na etherification reaction ya alkaline selulose na okiside ya Ethylene (cyangwa chlorohydrin), ni iyitwa etion ya solionose. Kubera ko HEC ifite ibyiza byo kubyimba, guhagarika, gutatanya, kwigana, guhuza, gukora firime, kurinda ubushuhe no gutanga colloide ikingira, yakoreshejwe cyane mubushakashatsi bwamavuta, gutwikira, kubaka, ubuvuzi, ibiryo, imyenda, gukora impapuro na polymer Polymerisation n'indi mirima.

Bigenda bite iyo hydroxyethyl selulose ihuye n'irangi rishingiye kumazi?

Nka surfactant itari ionic,hydroxyethyl selileifite imitungo ikurikira usibye kubyimba, guhagarika, guhambira, kureremba, gukora firime, gutatanya, kubika amazi no gutanga colloid ikingira:

HEC irashonga mumazi ashyushye cyangwa mumazi akonje, ubushyuhe bwinshi cyangwa guteka nta mvura igwa, kuburyo ifite uburyo bwinshi bwo kwikemurira no kuranga ibishishwa, hamwe nubushuhe butari ubushyuhe;

Ubushobozi bwo gufata amazi bukubye kabiri ubwa methyl selulose, kandi bufite gahunda nziza yo gutembera;

Ugereranije na methyl selulose izwi na hydroxypropyl methyl selulose, ubushobozi bwo gukwirakwiza HEC nububi, ariko ubushobozi bwo gukingira colloid nabwo bukomeye.

Ntabwo ari ionic kandi irashobora kubana hamwe nandi moko menshi yandi mazi ashonga polymers, surfactants, nu munyu. Nibyimbye byiza bya colloidal kubyibushye cyane bya electrolyte ibisubizo;

Nigute ushobora gukoresha hydroxyethyl selile? Nigute ushobora kongeramo?

Ongeraho muburyo butaziguye - ubu buryo nuburyo bworoshye kandi bufata igihe gito.

Ongeramo amazi meza mu ndobo nini ifite imashini ivanze cyane. Tangira kubyutsa ubudahwema kumuvuduko muke hanyuma ushungure buhoro hydroxyethyl selulose mubisubizo neza. Komeza kubyutsa kugeza ibice byose byashizwemo. Noneho ongeramo imiti igabanya ubukana hamwe ninyongera zitandukanye. Nka pigment, imfashanyo ikwirakwiza, amazi ya amoniya, nibindi. Kangura kugeza hydroxyethyl selulose yose imaze gushonga burundu (viscosity yumuti wiyongera cyane) mbere yo kongeramo ibindi bice muburyo bwo kubyitwaramo.

Bafite inzoga za nyina

Nugutegura inzoga za nyina ubanza kwibanda cyane, hanyuma ukongeraho kubicuruzwa. Ibyiza byubu buryo nuko bifite ihinduka ryinshi kandi birashobora kwongerwaho kubicuruzwa byarangiye, ariko bigomba kubikwa neza. Intambwe zubu buryo zirasa nintambwe nyinshi muburyo bwa 1; itandukaniro ni uko nta mpamvu yo gukenera cyane, kandi bamwe mubakangurambaga bafite imbaraga zihagije zo gukomeza hydroxyethyl selulose ikwirakwizwa kimwe mubisubizo birashobora gukomeza nta guhagarika Stir kugeza bishonge burundu mubisubizo biboneye. Icyakora, tugomba kumenya ko fungiside igomba kongerwamo inzoga za nyina vuba bishoboka.

Kubera ko hydroxyethyl selile yakozwe hejuru yubutaka ari ifu cyangwa fibrous ikomeye, Lihongde arakwibutsa kwitondera ingingo zikurikira mugihe utegura inzoga ya hydroxyethyl selulose:

(1) Mbere na nyuma yo kongeramo hydroxyethyl selulose, igomba guhora ikomeza kugeza igisubizo kiboneye kandi gisobanutse neza.

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. Kuzamura pH nyuma yo guhanagura bifasha gushonga.

(5) Mugihe gishoboka, ongeramo imiti igabanya ubukana mbere

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