Kuparadzira hydroxyethyl cellulose (HEC) ibasa rinoda matanho chaiwo ekuteverwa, kunyanya mumvura. Matanho akakodzera ekupararira nekunyungudika anogona kuve nechokwadi chekuti inoshandiswa. Hydroxyethyl cellulose inoshandiswa zvakanyanya mukuputira, kunamira, zvizoro, minda yemafuta nedzimwe nzvimbo nekuda kwekukora kwayo, kugadzikana, kugadzira firimu, kunyorovesa uye mamwe mabasa.
Nhanganyaya yeHydroxyethyl Cellulose
Hydroxyethyl cellulose imhando ye non-ionic cellulose ether inonyungudika mumvura inogadzirwa nemakemikari ekugadzirisa cellulose yechisikigo. Ine mhedzisiro yakanaka yekunyungudika uye kukora, uye inogona kugadzira mhinduro yemvura yakajeka, ine viscous. HEC inewo kutsungirira kwakanaka kwemunyu, saka inonyanya kukodzera nzvimbo dzemvura yegungwa kana masisitimu ane munyu. Panguva imwe chete, inogona kuramba yakagadzikana munzvimbo dzakakura dzepH uye haikanganisirwe nenzvimbo dzine acid nealkali.
Pfungwa yekupararira kwehydroxyethyl cellulose
Mumvura, nzira yekupararira kwehydroxyethyl cellulose inosanganisira matanho maviri makuru: kupararira kwakanyorova uye kunyungudika kwakakwana.
Kupararira kwemvura: Iyi ndiyo nzira yekugadzira zvidimbu zve hydroxyethyl cellulose zvakapararira zvakaenzana mumvura. Kana HEC ikawedzerwa zvakananga mumvura, inonyudza mvura nekukurumidza uye inoumba zvidimbu zvinonamira pamusoro, izvo zvinodzivisa kunyungudika kwakawanda. Saka, panguva yekupararira, kuumbwa kwezvidimbu zvakadaro kunofanira kudzivirirwa zvakanyanya sezvinobvira.
Kunyungudika kwakakwana: Mushure mekunyorovesa, mamorekuru e cellulose anopararira zvishoma nezvishoma mumvura kuti agadzire mhinduro yakafanana. Kazhinji, HEC inonyungudika zvishoma nezvishoma uye inogona kutora maawa akati wandei kana kupfuura, zvichienderana nekupisa kwemvura, mamiriro ekukurunga uye saizi ye cellulose particles.
Matanho ekupararira kwehydroxyethyl cellulose
Kuti hydroxyethyl cellulose iparadzirwe zvakaenzana, matanho ekupararira anowanzo shandiswa:
1. Sarudza tembiricha yemvura yakakodzera
Kupisa kwemvura chinhu chakakosha chinokanganisa kupararira nekunyungudika kwehydroxyethyl cellulose. Kazhinji, mvura inotonhora kana mvura yemukamuri ndiyo nzvimbo yakakodzera yekunyungudika. Mvura inodziya (inenge 30-40°C) inobatsira kukurumidzisa kunyungudika, asi kupisa kwakanyanya kwemvura (kupfuura 50°C) kunogona kukonzera kuti zviungane panguva yekunyungudika, izvo zvinokanganisa kupararira kwemvura.
2. Kurapa usati wanyorovesa
Hydroxyethyl cellulose inowanzoita mabundu nekukurumidza mumvura, saka kurapwa kwekunyorovesa usati waisa mvura inzira inoshanda yekupararira. Nekutanga kusanganisa HEC nechinonyungudutsa mumvura (senge ethanol, propylene glycol, nezvimwewo), HEC inonyoroveswa zvakaenzana kudzivirira kuti isanyungudike mvura zvakananga uye igadzire mapundu. Nzira iyi inogona kuvandudza zvakanyanya kushanda kwekupararira kwemvura.
3. Dzora kumhanya kwekuwedzera
Pakuparadzanisa hydroxyethyl cellulose, upfu hunofanira kudururwa mumvura zvishoma nezvishoma uye zvakaenzana uchikurunga. Kumhanya kwemusanganiswa we ...
4. Kukurunga
Kukurunga ndeimwe yematanho akakosha pakupararira kwemvura. Zvinokurudzirwa kushandisa muchina wekukurunga usingakurunga nguva dzose kuti uve nechokwadi chekuti hydroxyethyl cellulose inogona kugoverwa zvakaenzana mu liquid system yese. Kukurunga nekukurumidza kunogona kukonzera kuti HEC iungane, kuwedzera nguva yekunyungudika, uye kugadzira mabubbles, zvichikanganisa kujeka kwemushonga. Kazhinji, nguva yekukurunga inofanira kudzorwa pakati pemaminitsi makumi matatu nemaawa akati wandei, zvichienderana nemidziyo inoshandiswa uye tembiricha yemvura.
5. Wedzera ma electrolytes kana kugadzirisa pH
Dzimwe nguva, nzira yekunyungudika kwehydroxyethyl cellulose inogona kukurumidziswa nekuwedzera huwandu hwakakodzera hwe electrolytes (senge munyu) kana kugadzirisa pH value. Nzira iyi inonyanya kukodzera kushandiswa kune zvinodiwa zvakanyanya kuti imhanye yekunyungudika. Zvisinei, huwandu hwe electrolyte kana pH hunofanira kugadziriswa nokungwarira kudzivirira kukanganisa mashandiro eHEC.
Matambudziko Akajairika uye Matanho Ekudzivirira
Kuungana: Dambudziko guru reHEC nderekuungana panguva yekunyungudika, izvo zvinoita kuti inyungudike isina kukwana. Kuti udzivise izvi, unogona kushandisa nzira yekunyorovesa usati wanyorovesa kana kusanganisa HEC nezvimwe zvinhu zveupfu (zvakadai semafillers, pigments, nezvimwewo) wozozviisa mumvura.
Kunyungudika kunononoka: Kana kunyungudika kuri kunonoka, unogona kukurumidzisa kunyungudika nekuwedzera kushanda kwekukurunga kana kuwedzera tembiricha yemvura zvakakodzera. Panguva imwe chete, unogona zvakare kuedza kushandisa HEC instant, iyo yakagadzirirwa kunyungudika nekukurumidza munguva pfupi.
Dambudziko remapundu: Mapundu anogadzirwa zviri nyore panguva yekukurunga, zvichikanganisa kujeka uye kuyerwa kwehunyoro hwemushonga. Panyaya iyi, kuderedza kumhanya kwekukurunga kana kuwedzera huwandu hwakakodzera hwemushonga unobvisa mapundu kunogona kuderedza kuumbwa kwemapundu zvinobudirira.
Nzira dzekudzivirira kushandiswa kwehydroxyethyl cellulose
Mukushandiswa kwaro, mhando yakakodzera uye nzira yekuwedzera ye hydroxyethyl cellulose inofanira kusarudzwa zvichienderana nezvinodiwa nemasisitimu akasiyana. Semuenzaniso, muindasitiri ye coatings, hydroxyethyl cellulose haingoshandiswi se thickener chete, asiwo inogona kuvandudza rheology, firimu forming uye kugadzikana kwekuchengetedza coatings. Muindasitiri ye oilfield, HEC inodzivirira munyu zvakanyanya, saka sarudzo inofanira kugadziriswa zvichienderana nemamiriro e downhole.
Kuparadzira hydroxyethyl cellulose ibasa rehunyanzvi, uye zvakakosha kusarudza nzira yakakodzera yekuparadzira zvichienderana nemamiriro akasiyana ekushandisa. Nekudzora tembiricha yemvura, kunyorovesa zvakanaka, kusanganisa zvine mwero uye kuwedzera zvimwe zvinodiwa, zvinogona kuve nechokwadi chekuti hydroxyethyl cellulose inopararira zvakaenzana uye inonyungudutswa zvachose mumvura, nokudaro zvichiita kuti iwedzere kukora kwayo uye kugadzikana.
Nguva yekutumira: Gumiguru-23-2024