Chii chinonzi hydroxyethyl cellulose?

Chii chinonzi hydroxyethyl cellulose?

Hydroxyethyl cellulose (HEC), chinhu chakachena kana cheyero isina hwema, chisina chepfu, chine fibrous kana powdery solid, chakagadzirwa ne etherification ye alkaline cellulose ne ethylene oxide (kana chlorohydrin), zviri mu genus Nonionic soluble cellulose ethers. Nekuti HEC ine hunhu hwakanaka hwakadai sekukora, kumisa, kuparadzira, emulsifying, bonding, film-forming, kuchengetedza hunyoro uye kupa colloids dzinodzivirira, yakashandiswa zvakanyanya mukutsvaga mafuta, kuputira, kuvaka, mishonga nechikafu, machira, kugadzira mapepa nema polymers. Polymerization nedzimwe nzvimbo.

Hydroxyethyl cellulose inoshandiswa zvakanyanya muindasitiri yezvekuputira. Ngatitarisei mashandiro ayo muzvekuputira:

Chii chinoitika kana hydroxyethyl cellulose ikasangana nependi yemvura?

Sechinhu chisiri cheionic surfactant, hydroxyethyl cellulose ine zvinhu zvinotevera pamusoro pekukora, kumisa, kusunga, kutenderera, kugadzira firimu, kupararira, kuchengetedza mvura uye kupa ma colloids ekudzivirira:

HEC inonyungudika mumvura inopisa kana inotonhora, uye hainyungudike kana yapisa zvakanyanya kana kufashaira, zvichiita kuti ive nemhando dzakasiyana-siyana dzekunyungudika uye kunaka, pamwe nekugadzira gelling isingapisi;

Kugona kuchengetedza mvura kwakapetwa kaviri pane methyl cellulose, uye ine kurongeka kuri nani kwekuyerera kwemvura;

Non-ionic pachayo inogona kushanda pamwe chete nemamwe mapolymer anonyungudika mumvura, masurfactants, uye munyu, uye ichinhu chinogodza colloidal chakanakisa chine mhinduro dze electrolyte dzakanyanya kuwanda;

Zvichienzaniswa ne methyl cellulose inozivikanwa uye hydroxypropyl methyl cellulose, kugona kwayo kuparariraHECndiyo yakaipisisa, asi kugona kwekudzivirira kwecolloid ndiko kwakasimba.

Sezvo hydroxyethyl cellulose yakagadziriswa pamusoro iri solid ine upfu kana fibrous, Shandong Heda inokuyeuchidza kuti unyatsoteerera zvinhu zvinotevera paunenge uchigadzira hydroxyethyl cellulose mother liquor:

(1) Usati waisa hydroxyethyl cellulose uye mushure mekuwedzera, inofanira kuramba ichikurunga kusvika mhinduro yacho yanyatsojeka uye yakajeka.

(2) Inofanira kuseferwa zvishoma nezvishoma mubhara rekusanganisa, uye usabatanidza zvakananga hydroxyethyl cellulose nehydroxyethyl cellulose mubhara rekusanganisa zvakawanda kana muchimiro chemapundu nemabhora.

(3) Tembiricha yemvura uye pH yemvura zvine hukama hwakajeka nekunyungudika kwehydroxyethyl cellulose, saka kutarisisa kwakakosha kunofanira kupihwa kwairi.

(4) Usambofa wawedzera zvimwe zvinhu zvine alkaline mumusanganiswa usati wanyikwa upfu hwe hydroxyethyl cellulose nemvura. Kuwedzera pH mushure mekunyorovesa chete kunobatsira mukunyungudika.

(5) Nepose pazvinogoneka, wedzera mushonga wekuuraya fungus pachine nguva.

(6) Pakushandisa high-viscosity hydroxyethyl cellulose, huwandu hwedoro raamai harifanirwe kupfuura 2.5-3% (nehuremu), zvikasadaro doro raamai rinonetsa kubata naro.