Zvivakwa uye Chengetedzo yeHydroxyethyl Cellulose

Hydroxyethyl cellulose (HEC)ichena kana kuti yakareruka yero, isinganhuwi, isina-chepfu fibrous kana upfu, inogadzirwa ne etherification reaction yealkaline cellulose uye ethylene oxide (kana chlorohydrin). Nonionic soluble cellulose ethers. Pamusoro pekukora, kumisa, kusunga, kuyangarara, kuumba firimu, kuparadzira, kuchengetedza mvura uye nekupa inodzivirira colloid, ine zvinhu zvinotevera:

1. HEC inonyungudika mumvura inopisa kana mvura inotonhora, kupisa kwepamusoro kana kubikira pasina kunaya, kuitira kuti ive nemhando dzakasiyana-siyana dzekunyungudika uye viscosity maitiro, uye kwete-thermal gelation;

2. Haisi-ionic uye inogona kugarisana nemamwe akawanda-anonyungudika emvura mapolymers, surfactants, uye munyu. Iyo yakanakisa colloidal thickener ye-high-concentration electrolyte mhinduro;

3. Kukwanisa kwekuchengetedza mvura kwakapetwa kaviri kune iyo methyl cellulose, uye ine zviri nani kuyerera kwemutemo.

4. Kuenzaniswa neyakazivikanwa methyl cellulose uye hydroxypropyl methyl cellulose, kukwanisa kuparadzira kweHEC ndiyo yakaipisisa, asi kukwanisa kwekudzivirira kwecolloid ndiyo yakasimba. Nekuda kwehunhu hwayo hwakanaka hwekukora, kumisa, kuparadzira, emulsifying, kunamatira, kugadzira firimu, kuchengetedza unyoro nekupa inodzivirira colloid, HEC yakashandiswa zvakanyanya mukutsvagisa mafuta, machira, kuvaka, mishonga, chikafu, machira, mapepa uye polymerization. nemimwe minda.

Zvekungwaririra:

Sezvo iyo yepamusoro-yakagadziriswa hydroxyethyl cellulose ipfu kana selulosi yakasimba, zviri nyore kubata nekuinyungudutsa mumvura chero bedzi zvinhu zvinotevera zvichiteererwa. the

1. Pamberi uye mushure mekuwedzera hydroxyethyl cellulose, inofanira kukurudzirwa nguva dzose kusvikira mhinduro yacho yakanyatsojeka uye yakajeka. the

2. Inofanira kuiswa zvishoma nezvishoma mumusanganiswa wetangi, usawedzera zvakananga huwandu hwakawanda hwehydroxyethyl cellulose kana hydroxyethyl cellulose iyo yakagadzira mapundu nemabhora musanganisi tangi. the

3. Tembiricha yemvura uye kukosha kwePH mumvura zvine hukama huri pachena nekuparara kwehydroxyethyl cellulose, saka kutarisisa kunofanirwa kubhadharwa. the

4. Usawedzera mamwe alkaline zvinhu kune musanganiswa musati hydroxyethyl cellulose poda ichidziya kuburikidza nemvura. Kusimudza kukosha kwePH mushure mekudziya kuchabatsira kunyungudika. the

5. Sezvinobvira, wedzera anti-fungal agent nekukurumidza sezvinobvira. the

6. Paunenge uchishandisa high-viscosity hydroxyethyl cellulose, kusanganiswa kwedoro raamai hakufaniri kunge kwakakwirira kudarika 2.5-3%, kana zvisina kudaro doro raamai richava rakaoma kubata. Iyo post-yakarapwa hydroxyethyl cellulose kazhinji haisi nyore kugadzira mapundu kana mativi, uye haizogadziri insoluble spherical colloids mushure mekuwedzera mvura.