Chii chinonzi Hydroxyethyl Cellulose?
Hydroxyethyl cellulose (HEC), chena kana mwenje yero, isina kunhuhwirira, isina-chepfu fibrous kana powdery solid, yakagadzirwa ne etherification reaction yealkaline cellulose uye ethylene oxide (kana chlorohydrin), ndeyeNonionic soluble cellulose ethers. Sezvo HEC ine zvinhu zvakanaka zvekukora, kumisa, kuparadzira, emulsifying, kusungirirana, kugadzira firimu, kuchengetedza unyoro nekupa inodzivirira colloid, yakashandiswa zvakanyanya mukuongorora kwemafuta, machira, kuvaka, mishonga, chikafu, machira, kugadzira mapepa uye polymerization. nemimwe minda.
Hydroxyethyl cellulose inoshandiswa zvakanyanya muindasitiri yekupfeka, ngatitarisei kuti inoshanda sei mumachira:
Chii chinoitika kana hydroxyethyl cellulose ikasangana nemvura-yakavakirwa pendi?
Senge isiri-ionic surfactant, hydroxyethyl cellulose ine zvinotevera zvimiro mukuwedzera mukukora, kumisa, kusunga, kuyangarara, kuumba firimu, kuparadzira, kuchengetedza mvura uye kupa inodzivirira colloid:
HEC inonyungudika mumvura inopisa kana mvura inotonhora, tembiricha yakakwira kana kubikira pasina kunaya, kuitira kuti ive neyakasiyana siyana yekunyungudika uye viscosity maitiro, uye isiri-thermal gelation;
Iyo yekuchengeta mvura inokwana zvakapetwa kaviri kupfuura iyo yemethyl cellulose, uye ine zvirinani kuyerera kwemutemo;
Haisi-ionic uye inogona kugarisana nemamwe akawanda-anonyungudika mapolymers, ma surfactants, uye munyu. Iyo yakanakisa colloidal thickener ye-high-concentration electrolyte mhinduro;
Kuenzaniswa neiyo inozivikanwa methyl cellulose uye hydroxypropyl methyl cellulose, kugona kuparadzira kweHEC ndiko kwakaipisisa, asi iyo inodzivirira colloid kugona ndiyo yakasimba.
Sezvo iyo pamusoro-yakagadziriswa hydroxyethyl cellulose iri hupfu kana fibrous yakasimba, zvinotevera zvinofanirwa kuteverwa pakugadzirira hydroxyethyl cellulose mai doro:
(1) Pamberi uye mushure mekuwedzera hydroxyethyl cellulose, inofanira kusimudzwa nguva dzose kusvikira mhinduro yacho yakanyatsojeka uye yakajeka.
(2) Inofanirwa kupepetwa zvishoma nezvishoma mutangi rekusanganisa, uye usaise yakawanda kana kuisa zvakananga hydroxyethyl cellulose mutangi yekusanganisa.
(3) Tembiricha yemvura uye kukosha kwePH mumvura zvine hukama hwakakosha nekuparara kwehydroxyethyl cellulose, saka kutarisisa kunofanirwa kubhadharwa.
(4) Usawedzera zvimwe alkaline zvinhu musanganiswa usati hydroxyethyl cellulose poda yakanyikwa nemvura. Kusimudza pH mushure mekunyorova kunobatsira kunyungudika.
(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), kana zvisina kudaro doro raamai richava rakaoma kubata.
Nguva yekutumira: Nov-21-2022