Chii chinonzi hydroxyethyl methyl cellulose (HEMC)?

Chii chinonzi hydroxyethyl methyl cellulose (HEMC)?

 Hydroxyethyl methylcellulose(HEMC) inozivikanwawo se methylhydroxyethyl cellulose (MHEC) Ichena, pfumbu machena, kana kuti yero jena. Iyo isiri ionic cellulose ether inowanikwa nekuwedzera ethylene oxide kune methyl cellulose. Yakagadzirwa kubva kumapolymeri echisikigo anovandudzwa akadai sehuni pulp kana donje, uye HEMC inogona kushandiswa seyakakura-inoshanda yekuchengetedza mvura, inonamira uye firimu kugadzira agent, stabilizer, etc. Inoshandiswa zvakanyanya mumhando dzakasiyana dzemaindasitiri, semafuta. kuchera, kuvaka nekuvaka, pendi uye machira, mishonga yemishonga, nezvimwe.HEMCinogona kugadziridzwa zvinoenderana nezvinodiwa nevatengi, uye mushure mekugadziridzwa, ichiri neyakagwinya kuramba sagging uye yakanaka processability. Kuda kushandisaHEMCnokuda kwezvinangwa zveindasitiri? Ndokumbira ubate mutengesi wehydroxyethyl methyl cellulosekuwana kutengeserana kwakanaka.

Hunhu hweHEMC

HEMCine mabasa akasiyana-siyana. Zvinosanganisira:

1. Chitarisiko

 HEMCinogona kuva chena, yero, yero, kana grey chena.

2. Solubility

HEMCinonyungudika mumvura (inotonhora kana inopisa). NyangweHEMChaina kunyungudika mune yakawanda organic solvents, inonyungudika mubinary organic solvents uye organic solvent mvura masisitimu.

Kuwanda kwayo kwakanyanya kunoenderana ne viscosity, uye solubility yayo inosiyana ne viscosity. Iyo yakaderera viscosity, iyo yakakura solubility, uye zvinopesana.

3. Kugadzikana kwepH

 HEMCyakagadzikana muhuwandu hwe 3.0-11.0 uye viscosity yayo inenge isina kukanganiswa, asi kudarika iyi mutsara kuchaderedza viscosity yayo.

4. Metabolism

 HEMCchinhu chine inert chinoshandiswa zvakanyanya muchikafu nemushonga nekuda kwekutadza kuita metabolism.

5. Chiitiko chepamusoro

Nekuda kwekushanda kwayo kwepamusoro mumhinduro dzine aqueous, inogona kushandiswa se dispersant, mudziviriri, uye emulsifier.

6. Kuramba kwefungus

Mukuchengetedza kwenguva refu,HEMCine yakanaka viscosity kugadzikana, saka ine yakanaka mold resistance.

Iyo anti mold kugona kwakakwira kupfuura iyo yehydroxyethyl cellulose.

7. Kuchengeta mvura

 HEMCinova inoshanda kuchengetedza mvura mumiriri nekuda kweiyo yakakwirira viscosity mune aqueous mhinduro.

Kugona kwayo kuchengetedza mvura kwakakura kupfuura yemethyl cellulose.

8. Madota zvirimo

Nzira yekugadzirira yeHEMCinoshandisa kugeza mvura inopisa, zvichikonzera kuderera kwakanyanya kwemadota.

9. Thermal conductive adhesive

Apo iyoHEMCmhinduro inopisa kune imwe tembiricha, kujeka kwayo kunoderera, kuumba sediment uye gel, asi kana ikatonhodzwa, inodzokera kune yekutanga mamiriro emhinduro.

Kushandiswa kwakajairika kweHEMC

 Hydroxyethyl methylcelluloseinogona kushandiswa se:

Ø AdhesiveØ Inodzivirira colloidØ ThickenerØ Firimu yekugadzira ajenti Emulsifier LubricantØ Suspension agent

Industrial applications yeHEMC

 HEMCinoshandiswa zvakanyanya mumaindasitiri anotevera:

·Aggregation·Ceramics · Cosmetics·Kuvaka · Zvokudya Nezvinwiwa · Mishonga · Pendi uye Coatings · Ingi nemafuta ekuchera.

Sezvambotaurwa,hydroxyethyl methylcellulose (HEMC) inobva kumethylcellulose. Iyo isiri ionic cellulose ether yakagadzirwa kubva kune yakakwira-kuchena donje zvinhu mbishi.HEMCKuchengetedza kwemvura uye kugona kukora kunoita kuti ive yakakodzera mvura-based latex pendi, ingi uye petroleum drilling, zvekuvakisa, etc. Nekuda kwekupararira kwayo kushandiswa kwakasiyana siyana, kuwana.HEMCkubva kune vanozivikanwa vatengesi vehydroxyethyl methyl cellulose inogona kuve nechokwadi chekuti unowana zvigadzirwa zvakafanira kushandiswa kwemunhu kana mumaindasitiri.