Focus on Cellulose ethers

Chii chinonzi methylcellulose?

1. Inogona kunyungudutswa kana ichipisa pamusoro pe200 ° C, uye madota anenge anenge 0.5% kana apiswa, uye haana kwaakarerekera mushure mekugadzirwa slurry nemvura. Kana iri viscosity yayo, zvinoenderana nedhigirii repolymerization.

2. Solubility mumvura inversely proportional to temperature, high tembiricha ine low solubility, yakaderera tembiricha ine high solubility.

3. Soluble mumusanganiswa wemvura uye organic solvents yakadai semethanol, ethanol, ethylene glycol, glycerin uye acetone.

4. Kana iyo simbi yemunyu kana organic electrolyte iripo mune yayo aqueous solution, mhinduro inogona kuramba yakagadzikana. Kana iyo electrolyte yawedzerwa muhuwandu hukuru, gel kana kunaya kuchaonekwa.

5. Chiitiko chepamusoro. Mamorekuru ayo ane hydrophilic mapoka uye hydrophobic mapoka, ane emulsification, colloid kudzivirira uye chikamu kugadzikana.

6. Thermal gelation. Kana iyo aqueous solution inokwira kune imwe tembiricha (pamusoro petembiricha yegel), inove nemakore kusvika yaita gel kana kudonha, zvichiita kuti mhinduro irasikirwe neviscosity yayo, asi inogona kudzokera kune yayo yekutanga nekutonhodza. Iyo tembiricha iyo gelation uye kunaya kwemvura kunoitika zvinoenderana nerudzi rwechigadzirwa, kusungirirwa kwemhinduro uye chiyero chekupisa.

7. Iyo pH kukosha yakagadzikana. Iyo viscosity mumvura haina kukanganiswa nyore neasidhi uye alkali. Mushure mekuwedzera humwe huwandu hwealkali, zvisinei nekupisa kwakanyanya kana kuderera kwekushisa, hazvizokonzere kuora kana kupatsanurwa kweketani.

8. Mhinduro yacho inogona kuumba firimu yakajeka, yakaoma uye elastic pamusoro pepamusoro mushure mekuoma. Inogona kuramba organic solvents, mafuta uye akasiyana mafuta. Iyo haizopindure yero kana yaiswa pachiedza, uye haizoratidzike ine mvere dzakatsemuka. Inogona kunyungudutswa mumvura zvakare. Kana formaldehyde yakawedzerwa kune mhinduro kana mushure-yakagadziriswa ne formaldehyde, iyo firimu haina kunyungudika mumvura asi ichiri kuwedzera zvishoma.

9. Kukora. Inogona kukora mvura uye isiri-aqueous masisitimu, uye ine yakanaka anti-sag performance.

10. Kuwedzera viscosity. Mhinduro yaro ine mvura ine simba rakabatana rakasimba, iro rinogona kuvandudza simba rakabatana resimende, gypsum, pendi, pigment, wallpaper nezvimwe zvinhu.

11. Yakambomiswa nyaya. Inogona kushandiswa kudzora coagulation uye kunaya kwezvimedu zvakasimba.

12. Protective colloid kuti iwedzere kugadzikana kwayo. Inogona kudzivirira kuunganidzwa uye kubatana kwemadonhwe uye pigment, uye zvinobudirira kudzivirira kunaya kwemvura.


Nguva yekutumira: Jan-29-2023
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