Hydroxyethyl cellulose (HEC) ichena kana yakareruka yeyero, isinganhuhwi, isina chepfu fibrous kana upfu, yakagadzirwa nedonje linters kana yakanatswa pulp yakanyikwa mu30% yealkali yemvura, inoburitswa uye kudzvanywa mushure mehafu yeawa, Svidza kusvika chiyero. yealkaline mvura inosvika 1:2.8, wobva wapwanya. Iyo inogadzirwa ne etherification reaction uye ndeye isiri-ionic soluble cellulose ethers. Hydroxyethyl cellulose yakakosha mukobvu mu latex pendi. Ngatitarisei nezve mashandisiro e hydroxyethyl cellulose HEC mu latex pendi uye nezvekuchengetedza.
1. Yakashongedzerwa nedoro raamai rekushandisa: tanga shandisa hydroxyethyl cellulose HEC kugadzira doro raamai rine huwandu hwepamusoro, uye wobva wawedzera 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 2; 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.
2. 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, dispersing aids, ammonia water, etc. Shingairira kusvikira yose hydroxyethyl cellulose HEC yakanyungudutswa zvachose (iyo viscosity yemhinduro inowedzera pachena) uye wobva wawedzera zvimwe zvikamu muhuwandu hwekuita.
Zvekungwaririra;
(1) Paunenge uchishandisa high-viscosity hydroxyethyl cellulose HEC, kusanganiswa kwedoro raamai hakufaniri kunge kwakakwirira kudarika 2.5-3% (kuburikidza nehuremu), kana zvisina kudaro amai doro richava rakaoma kubata.
(2) Pamberi uye mushure mekuwedzera hydroxyethyl cellulose HEC, inofanira kukurudzirwa nguva dzose kusvikira mhinduro yacho yakanyatsojeka uye yakajeka.
(3) Sezvingabvira, wedzera antifungal mumiriri pamberi.
(4) Tembiricha yemvura uye pH kukosha kwemvura zvine hukama huri pachena nekuparara kwehydroxyethyl cellulose, saka kutariswa kwakanyanya kunofanirwa kubhadharwa.
(5) Usawedzera zvimwe alkaline zvinhu musanganiswa usati hydroxyethyl cellulose poda yakanyikwa nemvura. Kusimudza pH mushure mekunyura kunobatsira kunyungudika.
(6) Inofanirwa kupepetwa zvishoma nezvishoma mutangi rekusanganisa, uye usawedzera huwandu hukuru kana kuwedzera zvakananga hydroxyethyl cellulose yakagadzira mapundu nemabhora mutangi yekusanganisa.
Zvinhu zvakakosha zvinokanganisa viscosity yepende ye latex:
1 Corrosion of thickener by microorganisms.
2 Mukugadzira pendi, kana kutevedzana kwekuwedzera thickener kwakarurama.
3 Kana huwandu hwepamusoro activator uye huwandu hwemvura mufomu yepende yakakodzera.
4 Chiyero chehuwandu hwemamwe masikirwo akakora kusvika kuhuwandu hwehydroxyethyl cellulose mukugadzirwa kwepende.
5 Kana latex yakaumbwa, zviri mukati mezvakasara zvinokonzeresa uye mamwe ma oxides.
6 Tembiricha yakakwira zvakanyanya panguva yekupararira nekuda kwekugwinya zvakanyanya.
7 Kana maturu emhepo achiramba ari mupende, ndipo panobva pawedzera viscosity.
Iyo viscosity ye hydroxyethyl cellulose HEC inoshanduka zvishoma mu pH renji ye 2-12, asi viscosity inoderera kupfuura iyi. Iine maitiro ekukora, kumisa, kusunga, emulsifying, kuparadzira, kuchengetedza unyoro uye kudzivirira colloid. Mhinduro mumhando dzakasiyana dze viscosity dzinogona kugadzirirwa. Isingagadzike pasi peyakajairika tembiricha uye kumanikidzwa, dzivirira hunyoro, kupisa, uye tembiricha yakakwira, uye ine yakasarudzika yakanaka munyu kunyungudika kune dielectrics, uye mhinduro yayo ine aqueous inobvumirwa kuve neyakawandirwa munyu uye inoramba yakagadzikana.
Nguva yekutumira: Feb-14-2023