Focus on Cellulose ethers

Nzira yekusanganisa sei hydroxyethyl cellulose?

Kusanganisa hydroxyethyl cellulose (HEC) ibasa rinoda kunyatso kudzora uye kugona kwehunyanzvi. HEC imvura inonyungudika yepolymer zvinhu zvakashandiswa zvakanyanya mukuvaka, machira, mishonga, makemikari emazuva ese uye mamwe maindasitiri, ane thickening, kumiswa, bonding, emulsification, film-forming, protective colloid uye mamwe mabasa.

1. Sarudza nzira yakakodzera yekunyungudutsa

HEC inowanzonyungudutswa mumvura inotonhora, asi inogonawo kunyungudutswa mune organic solvents yakadai se ethanol nemvura yakasanganiswa, ethylene glycol, nezvimwewo. inoshandiswa mukushandiswa kwepamusoro-soro. Unhu hwemvura hunofanira kunge husina tsvina, uye mvura yakaoma inofanira kudzivirirwa kuti irege kukanganisa kunyungudika uye kugadzirisa hutano.

2. Dzora kutonhora kwemvura

Tembiricha yemvura ine simba guru pakuparara kweHEC. Kazhinji, tembiricha yemvura inofanira kuchengetwa iri pakati pe20°C ne25°C. Kana kutonhora kwemvura kwakanyanyisa, HEC iri nyore kuunganidza uye kuumba gel mass iyo yakaoma kuparara; kana tembiricha yemvura yakanyanya kuderera, chiyero chekupera chinononoka, chinokanganisa kusanganisa kunoshanda. Naizvozvo, iva nechokwadi chekuti tembiricha yemvura iri mukati mechikamu chakakodzera usati wasanganisa.

3. Kusarudzwa kwemichina yekusanganisa

Kusarudzwa kwemidziyo yekusanganisa zvinoenderana nezvinodiwa zvekushandisa uye chiyero chekugadzira. Kune madiki-scale kana marabhoritari mashandiro, blender kana ruoko-runobata blender inogona kushandiswa. Kune yakakura-yakakura kugadzirwa, yakakwira shear musanganiswa kana disperser inodiwa kuti ive nechokwadi chekusanganisa yunifomu uye kudzivirira kuumbwa kwejeri blocks. Iyo yekumhanyisa kumhanya kwemidziyo inofanira kunge iri pakati nepakati. Kukurumidza kuchaita kuti mhepo ipinde mumhinduro uye ibudise mabhubhu; kunonoka zvakanyanya hakugone kuparadzira HEC.

4. HEC yekuwedzera nzira

Kuti udzivise kuumbwa kwemasumbu egel panguva yekuparara kweHEC, HEC inofanira kazhinji kuwedzerwa zvishoma nezvishoma pasi pekukurudzira. Matanho chaiwo ndeaya anotevera:

Kutanga kubvongodza: ​​Muchisviniro chakagadzirirwa kunyungudutswa, tanga agitator uye kurunga nekumhanya kwepakati kuti uite vortex yakagadzikana mumvura.

Kuwedzera zvishoma nezvishoma: Zvishoma nezvishoma uye zvakaenzana kusasa iyo HEC poda muvortex, dzivisa kuwedzera zvakanyanya panguva imwe chete kudzivirira agglomeration. Kana zvichibvira, shandisa sieve kana funnel kudzora kumhanya kwekuwedzera.

Kuenderera mberi kunokurudzira: Mushure mokunge HEC yakawedzerwa zvakakwana, ramba uchikurudzira kwenguva yakati, kazhinji maminitsi makumi matatu kusvika ku1 awa, kusvikira mhinduro yacho yakanyatsojeka uye pasina zvidimbu zvisingagadziriswi.

5. Kudzora nguva yekuparara

Nguva yekuparara inoenderana negiredhi ye viscosity yeHEC, tembiricha yekunyungudika svikiro uye mamiriro anokurudzira. HEC ine high viscosity giredhi inoda nguva yakareba yekuparara. Kazhinji, zvinotora 1 kusvika maawa 2 kuti HEC iparadzwe zvachose. Kana midziyo yepamusoro yeshear inoshandiswa, nguva yekuparara inogona kupfupiswa, asi kunyanya kubvongodza kunofanira kudziviswa kudzivirira kukanganisa kwema molecular maitiro eHEC.

6. Kuwedzerwa kwezvimwe zvinhu

Munguva yekuparara kweHEC, zvimwe zvigadzirwa zvingada kuwedzerwa, zvakadai sekuchengetedza, pH kugadzirisa kana zvimwe zvinowedzera zvinoshanda. Izvi zvinoshandiswa zvinofanira kuwedzerwa zvishoma nezvishoma mushure mokunge HEC yanyungudutswa zvachose, uye kukurudzira kunofanira kuenderera mberi kuti kuve nechokwadi chekugovera yunifomu.

7. Kuchengetedza kwekugadzirisa

Mushure mekusanganiswa, HEC mhinduro inofanira kuchengetwa mumudziyo wakavharwa kudzivirira kubuda kwemvura uye kusvibiswa kwehutachiona. Nzvimbo yekuchengetedza inofanira kuchengetedzwa yakachena, yakaoma uye kure nechiedza chezuva. Iyo pH kukosha kwemhinduro kunofanirwa kugadziridzwa kune yakakodzera renji (kazhinji 6-8) kuwedzera nguva yekuchengetedza.

8. Kuongororwa kwehutano

Mushure mekusanganisa, zvinokurudzirwa kuita yemhando yekuongorora pane mhinduro, kunyanya kuyedza ma parameter akadai se viscosity, pachena uye pH kukosha kwemhinduro kuti ive nechokwadi chekuti inosangana nezvinodiwa zvinotarisirwa. Kana zvichidikanwa, kuongororwa kwehutachiona kunogona kuitwa zvakare kuve nechokwadi chehutsanana hwemhinduro.

Hydroxyethyl cellulose inogona kunyatsosanganiswa kuti iwane yepamusoro-mhando HEC mhinduro kuzadzisa zvinodiwa nenzvimbo dzakasiyana dzekushandisa. Munguva yekushanda, imwe neimwe yekubatanidza inodzorwa zvakasimba kudzivirira misoperation uye kuve nechokwadi chekusanganiswa kwakanaka uye kunaka kwechigadzirwa chekupedzisira.


Nguva yekutumira: Aug-21-2024
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