Chii chinonzi hydroxyethyl cellulose?

Chii chinonzi hydroxyethyl cellulose?

Hydroxyethyl cellulose (HEC), chena kana yakachenuruka yero, isinganhuhwi, isiri-chepfu fibrous kana upfu yakasimba, yakagadzirwa ne etherification yealkaline cellulose uye ethylene oxide (kana chlorohydrin), yerudzi rweNonionic soluble cellulose ethers. Nemhaka yekuti HEC ine zvinhu zvakanaka zvakadai sekukora, kumisa, kuparadzira, emulsifying, kusungirirwa, kugadzira firimu, kuchengetedza unyoro uye kupa macolloids ekudzivirira, yakashandiswa zvakanyanya mukuongorora kwemafuta, kuvhara, kuvaka, mishonga uye zvokudya, machira, mapepa uye mapolymers. Polymerization uye mamwe minda.

Hydroxyethyl cellulose inoshandiswa zvakanyanya muindasitiri yekupfeka. Ngatitarisei kuti inoshanda sei mune coatings:

Chii chinoitika kana hydroxyethyl cellulose ikasangana nemvura-based coatings?

Senge isiri-ionic surfactant, hydroxyethyl cellulose ine zvinotevera zvimiro mukuwedzera mukukora, kumisa, kusunga, flotation, firimu-kuumba, kuparadzira, kuchengetedza mvura uye kupa inodzivirira colloids:

HEC inonyungudika mumvura inopisa kana inotonhora, uye haipindi pakushisa kwepamusoro kana kufashaira, ichiita kuti ive nehuwandu hwekunyungudika uye viscosity maitiro, pamwe nekusapisa kwegelling;

Iyo yekuchengeta mvura inokwana zvakapetwa kaviri iyo yemethyl cellulose, uye ine zvirinani kuyerera mutemo;

Non-ionic pachayo inogona kugarisana nemamwe akawanda-anonyungudika emvura mapolymers, surfactants, uye munyu, uye yakanakisa colloidal thickener ine high-concentration electrolyte solutions;

Kuenzaniswa neiyo inozivikanwa methyl cellulose uye hydroxypropyl methyl cellulose, kugona kuparadziraHECndiyo yakaipisisa, asi inodzivirira colloid kugona ndiyo yakasimba.

Sezvo pamusoro-yakagadzirwa hydroxyethyl cellulose iri hupfu kana fibrous yakasimba, Shandong Heda inokuyeuchidza kuti uteerere kune anotevera mapoinzi paunenge uchigadzira hydroxyethyl cellulose mai doro:

(1) Pamberi uye mushure mekuwedzera hydroxyethyl cellulose, inofanira kuchengetwa ichikurudzira kusvikira mhinduro yacho yakanyatsojeka uye yakajeka.

(2) Inofanirwa kupepetwa zvishoma nezvishoma mubhodhoro rinosanganiswa, uye usabatanidza zvakananga hydroxyethyl cellulose uye hydroxyethyl cellulose mubhodhoro rinosanganiswa muhuwandu hukuru kana nenzira yemapundu nemabhora.

(3) Tembiricha yemvura uye pH kukosha kwemvura zvine hukama huri pachena nekuparara kwehydroxyethyl cellulose, saka kutariswa kwakanyanya kunofanirwa kubhadharwa kwairi.

(4) Usambofa wawedzera zvimwe zvinhu zvealkaline kumusanganiswa usati wanyikwa hydroxyethyl cellulose poda nemvura. Kusimudza pH chete mushure mekunyorova kunobatsira mukuparara.

(5) Sezvinobvira, wedzera antifungal mumiriri pamberi.

(6) Paunenge uchishandisa high-viscosity hydroxyethyl cellulose, kusanganiswa kwedoro raamai hakufaniri kunge kwakakwirira kudarika 2.5-3% (kuburikidza nehuremu), zvikasadaro doro raamai rakaoma kubata.