HEC muLatex Pendi

1. Pfupiso Yekutanga yeHEC

Hydroxyethyl Cellulose (HEC)ipolymer isinganyungudike mumvura, inogadzirwa nekuita cellulose ne ethylene oxide mushure mekugadziriswa kwe alkali. Sechinonyungudika chinonyungudika mumvura chinoshanda zvikuru, HEC ine basa risingatsivike mupendi ye latex. Iyo hydroxyethyl substituent muchimiro chayo chemamorekuru inoita kuti inyungudike mumvura zvakanaka uye igadzikane nemakemikari, zvichiita kuti ive imwe ye cellulose ether thickeners dzinonyanya kushandiswa muindasitiri yependi inobva mumvura.

2. Hunhu hukuru hweHEC mupendi yelatex

Kubudirira kwekukora kwakanaka

Chinhu chinonyanya kuzivikanwa cheHEC kugona kwayo kukora zvakanaka:

Kunyatsosimba kwekuwedzera: huwandu hwakaderera hwekuwedzera (kazhinji 0.2%-1.0% yefomula yese) hunogona kuwedzera zvakanyanya viscosity yesystem.

Hunhu hwemvura yepseudoplastic: kusimba kwakanyanya kana isingachinji, kusimba kunoderera panguva yekucheka, izvo hazvingovimbisi chete kugadzikana kwekuchengetedza asiwo zvinobatsira kukwesha.

Kugadziriswa kweViscosity: Zvigadzirwa zveHEC zvine huremu hwakasiyana hwemamorekuru zvinogona kupa huwandu hwekusimba kubva pazviuru kusvika kumakumi ezviuru zve mPa·s

Mutemo wakanaka wekushanda kwe rheological

HEC inogona kuvandudza zvinobudirira hunhu hwe rheological hwependi ye latex:

Kudzivirira kudonha: kunodzivirira pendi kuti isatsvedze kana yaiswa panzvimbo dzakamira

Kuyerera kwakanaka uye kutsetseka: kunogona kuenzana otomatiki mushure mekukwesha, zvichideredza mavanga ebhurashi

Kuchengetwa kwemvura kuri pakati nepakati: kunononotsa kupwa kwemvura uye kunorebesa nguva yekushanya

Kugarisana kwakanaka uye kugadzikana

HEC muhurongwa hwependi yelatex inoratidza:

Kuchinjika kwepH yakakura: kushanda kwakasimba muhuwandu hwepH hwe2-12

Kushivirira kwema electrolyte kwakanaka: hakukanganisirwi nezvinhu zvine munyu mumuviri

Kugadzikana kwakanaka kwekuchengetedza: hazvisi nyore kuisa muzvikamu kana kuita kuti mvura igare kwenguva refu

Dziviriro yezvakatipoteredza uye hunhu hwekuchengetedza

Sekuwedzera kwegirini, HEC ine hunhu hunotevera:

Haina chepfu uye haina njodzi: haina APEO, formaldehyde nezvimwe zvinhu zvinokuvadza

Inoora: inogona kuora netupukanana, isingakuvadzi nharaunda

Hunhu hwakaderera hweVOC: inosangana nezvinodiwa zvekugadzirwa kwemachira ane hushamwari kune nharaunda

3. Mashandiro eHEC mupendi yelatex

Gadzirisa hurongwa hwekupararira

HEC inosimbisa pigment ne filler particles kuburikidza nenzira dzinotevera:

Wedzera viscosity yechikamu chinoenderera mberi uye deredza mwero wekudonha kwezvikamu

Gadzira chimiro che network chine mativi matatu kudzivirira kuungana kwezvikamu

Gadzira mhedzisiro yekudzivirira steric ne latex particles

Kuvandudza mashandiro ekuvaka

HEC inovandudza mashandiro ekugadzira pendi yelatex:

Gadzirisa viscosity kuti pendi ive nyore kumonereka, kukwesha kana kupfapfaidza

Dzora mashandiro emvura inoyerera uye uderedze kurasikirwa kwekuvaka

Wedzera nguva yekunyorova kuti zvive nyore kugadzirisa majoini

Kuvandudza mhando yependi

HEC inobatsira kugadzira firimu rependi remhando yepamusoro:

Kurudzira kupararira kwakafanana kwemavara eganda uye kuvandudza simba rekuviga mavara

Deredza kupwanyika uye kutsemuka panguva yekuomesa

Wedzera huwandu hwependi uye kuvandudza kuramba kwekupenda

4. Kuenzanisa mabhenefiti eHEC nezvimwe zvinogocha

Zvichienzaniswa ne inorganic thickeners

Zvichienzaniswa ne bentonite, magnesium aluminum silicate, nezvimwewo:

Kubudirira kwepamusoro kwekukora

Hazvikanganisi kupenya kwependi

Hazvikonzeri shanduko mukukosha kwepH yesystem

Zvichienzaniswa nezvinosimbisa polymer zvakagadzirwa

Zvichienzaniswa ne polyurethanes (HEUR) uye acrylics (HASE):

Mutengo wemakwikwi wakawanda

Zvishoma zvinokanganiswa nekuchinja kwefomula

Kugadzikana kuri nani kwekuchengetedza

Zvichienzaniswa nedzimwe ether dze cellulose

Zvichienzaniswa nemethyl cellulose (MC) uye hydroxypropyl methyl cellulose (HPMC):

Kunyungudika kuri nani, hapana muganho wekupisa kwejeli

Kudzivirira kuvhuvhuta kuri nani

Kuenderana kuri nani ne emulsions

5. Hunhu hwekushandisa HEC mupendi dze latex dzakakosha

Mupendi dzelatex dzakapenya zvikuru

Ipa viscosity iri pakati nepakati pasina kukanganisa gloss

Deredza katsika kekuparadzanisa mvura kwemasisitimu ePVC akakwira

Batsirai aluminium powder nezvimwe zvinhu kuti zvienderane

Mupendi dze elastic latex

Enzanisa kupesana kuripo pakati pekusimba uye kudzivirira kudonha

Dzivirira kudonha kwemvura panguva yekuputira gobvu

Chengetedza mashandiro ekudzoserwa kwejira rekuputira

Mupendi dzelatex dzinoshanda

Hazvikanganisi kuputira kwemishonga inorwisa mabhakitiriya = Mhedzisiro pakushanda kwemishonga inoshanda

Ipa mashandiro akakodzera ekumisikidzwa kwekupisa kwekudzivirira kupisa

Shandisa pamwe chete nemishonga yekuchengetedza kuti uwedzere nguva yekugara mugaba

6. Kuchenjerera pakushandisa HEC

Maitiro ekunyunguduka: Nzira yakakodzera yekupararira inofanira kushandiswa kudzivirira kuungana kwemvura. Zvinokurudzirwa kusanganisa nehupfu hwakaoma kana kugadzira pre-gel kutanga

Nguva yekuwedzera: Inowanzo wedzerwa panguva yekusanganisa pendi kudzivirira kusangana zvakananga nemamwe ma dispersants

Kusarudzwa kwekuenderana: Kazhinji inoshandiswa pamwe chete nedzimwe mhando dzezvinogodza kuti pave nemigumisiro inoshanda pamwe chete

Mamiriro ekuchengetedza: Inofanira kuvharwa uye kuchengetwa munzvimbo yakaoma kudzivirira kunyudzwa kwehunyoro uye kubatanidzwa kwemvura

7. Mafambiro ebudiriro yeramangwana

Nekufambira mberi kwetekinoroji yependi yelatex, zvigadzirwa zveHEC zviri kuramba zvichigadzira zvinhu zvitsva:

Dota shoma HEC inoderedza kukanganiswa kwependi

Instant HEC inorerutsa maitiro ekugadzira

HEC yakagadziriswa pamusoro inovandudza mashandiro ekupararira

Yakabatanidzwa ne nanotechnology kugadzira zvigadzirwa zvinoshanda zvakawanda

HECine chinzvimbo chakakosha mumunda wependi yelatex ine hunhu hwayo hwakasiyana hwekushanda. Kusimba kwayo kwakanyanya, kushanda kwayo zvakanaka pakuvaka uye kugadzikana kwekuchengetedza kunoita kuti ive imwe yezvinonamira zvinokurudzirwa zvekugadzira pendi inobva mumvura. Nekuda kwezvinodiwa zvakanyanya zvekuchengetedza zvakatipoteredza uye kufambira mberi kwekuvandudzwa kwetekinoroji yekuputira, mikana yekushandiswa kweHEC mupendi yelatex ichave yakakura.