Uruhare rwa hydroxyethyl selulose (HEC) muri coatings!

Hydroxyethyl selulose (HEC), umuhondo wera cyangwa urumuri rwumuhondo, impumuro nziza, idafite ubumara bwa fibrous cyangwa ifu ikomeye, byateguwe na etherification ya alkaline selulose na okiside ya Ethylene (cyangwa chlorohydrin), ikomoka mubwoko bwa Nonionic soluble selulose ethers. 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 nibiribwa, imyenda, gukora impapuro na polymers. Polymerisation hamwe nizindi nzego.

Nyuma ya hydroxyethyl selulose ihuye n irangi rishingiye kumazi?

Nka surfactant idafite ionic, hydroxyethyl selulose ifite imitungo ikurikira usibye kubyimba, guhagarika, guhambira, flotation, gukora firime, gutatanya, kubika amazi no gutanga colloide ikingira:

HEC irashobora gushonga mumazi ashyushye cyangwa akonje, kandi ntigwa kugwa mubushyuhe bwinshi cyangwa kubira, bigatuma igira ibintu byinshi byo gushonga no kuranga ibibyimba, kimwe no guterwa n'ubushyuhe;

Ubushobozi bwo gufata amazi bwikubye 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 amazi, surfactants, nu munyu. Nibyimbye byiza bya colloidal kubyibushye cyane bya electrolyte ibisubizo.

Nigute ushobora gukoresha hydroxyethyl selile?

Ongeraho mugihe cyumusaruro - ubu buryo nuburyo bworoshye kandi bufata igihe gito:

Tangira kubyutsa ubudahwema kumuvuduko muke hanyuma ushungure buhoro buhoro hydroxyethyl selulose iringaniye mubisubizo hanyuma ukomeze kubyutsa kugeza ibice byose byashizwemo. Noneho ongeramo imiti igabanya ubukana hamwe ninyongera zitandukanye. Nka pigment, imfashanyo ikwirakwiza, ammonia, nibindi. Kangura kugeza hydroxyethyl selulose yose imaze gushonga burundu (viscosity yumuti wiyongera cyane) mbere yo kongeramo ibindi bice muri formula kugirango ikore reaction.

Bifite ibikoresho bya alcool

Nugutegura inzoga ya mama ifite intumbero yo hejuru, hanyuma ukayongera 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 bidakenewe ubukangurambaga bukabije, kandi gusa bamwe mubakangurambaga bafite imbaraga zihagije zo gukomeza hydroxyethyl selulose ikwirakwizwa kimwe mubisubizo birashobora gukoreshwa, kandi bigakomeza Kuzunguruka kugeza bishonge burundu mubisubizo biboneye. Ariko, tugomba kumenya ko imiti igabanya ubukana igomba kongerwamo inzoga za nyina vuba bishoboka.

Inama nziza:

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

Mbere na nyuma yo kongeramo hydroxyethyl selulose, bigomba guhora bikurura kugeza igisubizo kiboneye kandi gisobanutse;

Igomba gushungurwa mukuvanga gahoro gahoro, kandi ntugahuze mu buryo butaziguye ibibyimba cyangwa spheroide na hydroxyethyl selile mu kuvanga;

Ubushyuhe bwamazi nagaciro ka pH kumazi bifitanye isano ikomeye no gusesa hydroxyethyl selulose, bityo rero tugomba kubyitaho byumwihariko;

Ntukongere ibintu bimwe na bimwe bya alkaline muruvange mbere yahydroxyethyl selileifu yuzuye amazi. Kuzamura agaciro ka pH nyuma yo gushiramo bizafasha gushonga;

Mugihe gishoboka, ongeramo antifungal agent mbere;

Iyo ukoresheje hydroxyethyl selulose-yuzuye cyane, ubunini bwinzoga za nyina ntibugomba kuba hejuru ya 2,5-3% (kuburemere), naho ubundi inzoga za nyina ziragoye kubyitwaramo.