Kev ua haujlwm ntawm HPMC
Hydroxypropyl methyl cellulose (HPMC) yog ib yam uas tsis yog-ionic cellulose ether, uas yog ua los ntawm tej yam ntuj tso polymer cov ntaub ntawv raws li raw cov ntaub ntawv thiab refined los ntawm ib tug series ntawm tshuaj. Hnub no peb yuav kawm txog kev ua haujlwm ntawm HPMC.
● Dej solubility: Nws tuaj yeem yaj hauv dej hauv txhua qhov kev faib ua feem, qhov siab tshaj plaws nyob ntawm qhov viscosity, thiab kev sib cais tsis cuam tshuam los ntawm PH.l Organic solubility: HPMC tuaj yeem yaj hauv qee cov kuab tshuaj organic lossis cov organic hnyav aqueous xws li dichloroethane, ethanol tov, thiab lwm yam.
● Thermal gel yam ntxwv: Reversible gel yuav tshwm sim thaum lawv cov aqueous tov yog rhuab mus rau ib tug tej yam kub, nrog controllable ceev-ceev kev ua tau zoo.
● Tsis muaj ionic nqi: HPMC yog ib qho uas tsis yog-ionic cellulose ether thiab yuav tsis complex nrog hlau ions los yog organics los ua insoluble precipitates.
● Thickening: Nws cov kua dej aqueous muaj thickening, thiab cov nyhuv thickening muaj feem xyuam rau nws cov viscosity, concentration, thiab system.
● Kev tuav dej: HPMC lossis nws cov tshuaj tuaj yeem nqus tau thiab khaws dej.
● Kev tsim cov yeeb yaj kiab: HPMC tuaj yeem ua rau hauv cov yeeb yaj kiab du, tawv, thiab elastic, thiab muaj roj zoo thiab oxidation tsis kam.
● Enzyme kuj: HPMC cov tshuaj muaj cov enzyme zoo heev thiab viscosity stability.
● PH stability: HPMC kuj tseem ruaj khov rau cov kua qaub thiab alkali, thiab pH tsis cuam tshuam rau thaj tsam ntawm 3-11. (10) Kev ua haujlwm saum npoo: HPMC muab cov dej num saum npoo av hauv kev daws kom ua tiav qhov xav tau emulsification thiab tiv thaiv cov teebmeem colloid.
● Anti-sagging cov cuab yeej: HPMC ntxiv cov txheej txheem thixotropic rau putty hmoov, mortar, pobzeb kua nplaum, thiab lwm yam khoom, thiab muaj peev xwm tiv thaiv sagging zoo heev.
● Dispersibility: HPMC tuaj yeem txo qhov kev sib tshuam ntawm cov theem thiab ua rau cov theem dispersed uniformly dispersed mus rau hauv cov tee me me.
● Adhesion: Nws tuaj yeem siv los ua cov ntawv khi rau cov xim ntom ntom: 370-380g / l³ ntawv, thiab tseem tuaj yeem siv rau hauv cov coatings thiab adhesives.
● Lubricity: Nws tuaj yeem siv rau hauv roj hmab, asbestos, cement, thiab cov khoom siv ceramic kom txo kev sib txhuam thiab txhim kho cov permeability ntawm cov pob zeb slurry.
● Kev ncua: Nws tuaj yeem tiv thaiv cov khoom ruaj khov los ntawm nag lossis daus thiab inhibit qhov tsim ntawm nag lossis daus.
● Emulsification: Vim tias nws tuaj yeem txo cov npoo av thiab interfacial nro, nws tuaj yeem siv hluav taws xob.
● Kev tiv thaiv colloid: Ib txheej tiv thaiv yog tsim rau ntawm qhov chaw ntawm cov tee dej dispersed los tiv thaiv cov tee dej los ntawm kev sib koom ua ke thiab agglomerating kom ua tiav cov kev tiv thaiv ruaj khov.
Post lub sij hawm: May-08-2025