Hydroxyethyl Cellulose (HEC) yakajairika mvura-inonyungudika polymer komboni inoshandiswa zvakanyanya mupendi yelatex. Iyo haingoite basa rakakosha mukuvandudza mashandiro echigadzirwa, asi zvakare inovandudza zvakanyanya ruzivo rwekushandisa uye kunaka kweiyo yekupedzisira coating firimu.
Zvimiro zveHydroxyethyl Cellulose
Hydroxyethyl cellulose is nonionic cellulose ether inogadzirwa kubva kune yakasikwa cellulose kuburikidza nekugadzirisa etherification. Iyo ine yakanaka thickening, kumisa, kuparadzira uye emulsifying zvivakwa. Izvi zvinogonesa HEC kuumba yakagadzikana colloids mune aqueous mhinduro ine yakakwira viscosity uye yakanaka rheological properties. Pamusoro pezvo, HEC's aqueous solution ine kujeka kwakanaka uye inoshanda kuchengetedza mvura. Aya maitiro anoita kuti ishandiswe zvakanyanya mumapende e latex.
Basa mu latex pendi
thickener
Seimwe yeakanyanya thickeners e latex pendi, HEC inonyanya kukosha basa ndeyekuwedzera viscosity yependi mvura. Yakakodzera viscosity haingogone kuvandudza kugadzikana kwekuchengetedza kwepende ye latex, asiwo kudzivirira kunaya uye delamination. Uye zvakare, viscosity yakakodzera inobatsira kudzora kudonha uye inova nechokwadi chekuyera uye kufukidzwa panguva yekunyorera, nekudaro kuwana yunifomu yekuputira firimu.
kuvandudzwa kwekugadzikana
HEC inogona kuvandudza zvakanyanya kugadzikana kwelatex pendi. Mukugadzirwa kwependi ye latex, HEC inogona kudzivirira zvinobudirira pigments uye mafirita kubva pakugadzirisa, zvichibvumira pendi kuti irambe yakapararira panguva yekuchengetedza uye kushandiswa. Iyi pfuma inonyanya kukosha kuchengetedza kwenguva refu, kubatsira kuwedzera hupenyu hwesherufu yepende ye latex.
Kuchengetedza mvura
Kuvakwa kwependi ye latex kunowanzobatanidza kushandiswa kwemvura yakawanda, uye HEC yakanakisa kuchengetedza mvura inochengetedza firimu rekuputira rakanyorova panguva yekuomeswa, kudzivirira kuremara kwepamusoro senge kuputika, kuputika uye mamwe matambudziko anokonzerwa nekukurumidza kubuda kwemvura. . Izvi hazvibatsiri chete kuumba firimu yekuvhara, asiwo inovandudza kusungirirwa uye kusimba kwefirimu yekuputira.
Rheology kugadzirisa
Se rheology modifier, HEC inogona kugadzirisa kuchekwa kwemavara e latex pendi, kureva kuti, viscosity yepende inoderedzwa pamazinga akakwirira ekugera (zvakadai sebrashi, roller coating, kana spraying), zvichiita kuti zvive nyore kushandisa, uye panguva. mitengo yakaderera yekugera. Viscosity kupora pamatengo ekugera (semuenzaniso pakuzorora) kunodzivirira kudonha nekuyerera. Iyi rheological pfuma ine yakananga kukanganisa pakuvaka uye yekupedzisira yekubikira mhando ye latex pendi.
Kuvandudzwa kwekuvaka
Kuiswa kweHEC kunogona kuvandudza zvakanyanya kushanda kwependi ye latex, ichiita kuti pendi iite mushe uye yunifomu panguva yekushandisa. Inogona kuderedza mavara ebhurashi, inopa kutsvedzerera kwakanaka uye kupenya kweiyo firimu rekuvhara, uye kugadzirisa ruzivo rwemushandisi.
Sarudza uye shandisa
Mukugadzirwa kwependi ye latex, kusarudzwa uye kuyerwa kweHEC kunoda kugadziriswa zvichienderana nezvinodiwa zvekushandisa. HEC ine maviscosities akasiyana uye madhigirii ekutsiva ichava nemhedzisiro yakasiyana pakuita kwelatex pendi. Kazhinji kutaura, high-viscosity HEC inonyanya kukodzera kune gobvu-yakavharidzirwa latex pendi inoda kutaridzika kwepamusoro, nepo yakaderera-viscosity HEC yakakodzera pendi dzakatetepa-dzine mvura iri nani. Mukuwedzera, huwandu hweHEC hwakawedzerwa hunoda kugadziriswa maererano nezvinodiwa chaizvo. Kunyanya kuwanda kweHEC kunokonzeresa kuwanda kwekuputira, izvo zvisingakodzeri kuvaka.
Sechinhu chakakosha chekuwedzera chinoshanda, hydroxyethyl cellulose inotamba akawanda mabasa mulatex pendi: kukora, kudzikamisa, kuchengetedza mvura nekuvandudza kushanda. Kushandisa zvine musoro kweHEC hakugone kungovandudza kugadzikana kwekuchengetedza uye kuita kwekuvaka kwependi ye latex, asi zvakare inovandudza zvakanyanya kunaka uye kusimba kweiyo firimu rekuvhara. Nekuvandudzwa kweindasitiri yekuputira uye kufambira mberi kwetekinoroji, tarisiro yekushandiswa kweHEC mupende ye latex ichave yakakura.
Nguva yekutumira: Aug-03-2024