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.
Chii chinoitika kana hydroxyethyl cellulose ikasangana nemvura-yakavakirwa pendi?
Senge isiri-ionic surfactant,hydroxyethyl celluloseine zvinhu zvinotevera mukuwedzera kukora, kumisa, kusunga, kuyerera, kugadzira 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;
Kuenzaniswa neiyo inozivikanwa methyl cellulose uye hydroxypropyl methyl cellulose, kugona kuparadzira kweHEC ndiko kwakaipisisa, asi iyo inodzivirira colloid kugona ndiyo yakasimba.
Haisi-ionic uye inogona kugarisana nemamwe akawanda-anonyungudika mapolymers, ma surfactants, uye munyu. Iyo yakanakisa colloidal thickener ye-high-concentration electrolyte mhinduro;
Nzira yekushandisa sei hydroxyethyl cellulose? Kuwedzera sei?
Wedzera zvakananga panguva yekugadzira - iyi nzira ndiyo iri nyore uye inotora nguva shoma.
Wedzera mvura yakachena kubhaketi hombe rine musanganisi wekugera wakakwira. Tanga kubvongodza uchienderera mberi nekumhanya kwakaderera uye zvishoma nezvishoma sefa iyo hydroxyethyl cellulose mumhinduro yakaenzana. Ramba uchikurunga kusvikira zvimedu zvose zvanyorova. Zvadaro wobva wawedzera kuchengetedza uye zvakasiyana-siyana zvinowedzera. Zvakadai se pigment, zviyamuro zvekuparadzira, mvura yeammonia, etc. Shingairira kusvikira yose hydroxyethyl cellulose yakanyungudutswa zvachose (iyo viscosity yemhinduro inowedzera zvakanyanya) isati yawedzera zvimwe zvikamu muhuwandu hwekuita.
Akashongedzerwa nedoro ramai
Iko kugadzira doro raamai nehupamhi hwepamusoro kutanga, uye wozowedzera kune chigadzirwa. Kubatsira kweiyi nzira ndeyokuti ine hukuru hunochinja uye inogona kuwedzerwa zvakananga kune yakapedzwa chigadzirwa, asi inofanira kuchengetwa zvakanaka. Matanho eiyi nzira akafanana neakawanda ematanho ari munzira 1; mutsauko ndewekuti hapana chikonzero che-high-shear agitator, uye chete mamwe agitators ane simba rakakwana kuchengetedza hydroxyethyl cellulose yakaenzana yakapararira mumushonga inogona kuenderera mberi pasina kumira Kusveta kusvikira yanyungudika zvachose mumhinduro ye viscous. Nekudaro, zvinofanirwa kucherechedzwa kuti fungicide inofanirwa kuwedzerwa kudoro raamai nekukurumidza.
Sezvo iyo pamusoro-yakagadziriswa hydroxyethyl cellulose iri upfu kana fibrous yakasimba, Lihongde inokuyeuchidza kuti uteerere kune anotevera mapoinzi paunenge uchigadzira hydroxyethyl cellulose doro raamai:
(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: Zvita-26-2022