Hydroxyethyl Cellulose (HEC) yakakosha mvura-inonyungudika nonionic cellulose ether, iyo inoshandiswa zvakanyanya mukugadzira machira, kunyanya latex pendi. Sezvinoita thickener, inodzivirira colloid, inomisa mumiriri uye firimu-inogadzira rubatsiro, inovandudza zvakanyanya kushanda kwepende ye latex, inosimudzira maitiro ekuvaka epende uye maitiro ekuona echigadzirwa chakapedzwa.
1. Chimiro chemakemikari uye maitiro e hydroxyethyl cellulose
Hydroxyethyl cellulose inobuda mu cellulose inogadzirwa nekuunza boka re hydroxyethyl mu cellulose molecule. Icho chinhu chinonyungudika nemvura polymer compound. Chimiro chayo chemakemikari chinotarisa kunaka kwayo kunyungudika kwemvura uye kukora zvinhu. Kana yakanyungudutswa mumvura, inogona kuumba yakanyanya viscous mhinduro ine yakanaka adhesion, film-forming uye thickening mhedzisiro. Izvi zvivakwa zvinoita basa rakakosha mulatex pendi.
Hydroxyethyl cellulose inowanzo chena kana chiedza yero poda kana granules, iyo inonyungudutswa nyore nyore mumvura inotonhora kana inopisa kuti igadzire yakagadzikana colloidal solution. Mhinduro yaro ine kugadzikana kwepamusoro uye inogona kunyatso ramba acid, alkali, redox uye microbial degradation. Pamusoro pezvo, nekuda kweiyo isiri-ionic hunhu hwehydroxyethyl cellulose, haibatike mumakemikari nezvimwe zvinongedzo mulatex pendi senge pigment, fillers kana additives, saka ine kuenderana kwakakura mukuumbwa kwependi yelatex.
2. Iyo nzira yekuita yehydroxyethyl cellulose mu latex pendi
Mupendi yelatex, basa rehydroxyethyl cellulose rinonyanya kuratidzwa mukukora, kuchengetwa kwemvura, kusimba kwakawedzera uye nekuvandudza kushanda.
Kuomesa mhedzisiro: Hydroxyethyl cellulose, seyakagwinya inoshanda, inogona kuwedzera viscosity yependi yelatex uye kuwedzera thixotropy yayo. Izvi hazviiti chete zvinobudirira kudzivirira pende kubva mukudonha panguva yekuchengetedza uye kushandiswa, asiwo inoita kuti pendi iwedzere kunyange kana yakakungurutswa kana kubhurwa. Yakakodzera thickening mhedzisiro inobatsira kudzora rheology yependi yelatex, inova nechokwadi chekunzwa kwakanaka paunenge uchiisa, uye inovandudza kufukidzwa kwemafirimu.
Kuchengetedzwa kwemvura: Hydroxyethyl cellulose ine kuchengetedza kwemvura kwakanaka. Munguva yekuomeswa kwependi yelatex, inogona kudzivirira mvura kubva pakubuda nekukurumidza, nekudaro ichiwedzera iyo yakanyorova yemucheto yekuvhura nguva yepende uye kuve nechokwadi chekuvakwa kwakanaka. Mukuwedzera, kuchengetwa kwemvura kwakanaka kunogonawo kuderedza kuputika kwefirimu yekuputira mushure mekuoma, nokudaro nekuvandudza hutano hwese hwefirimu yekuputira.
Kugadzikana: Hydroxyethyl cellulose, sechidziviriro colloid, inogona kudzivirira zvinobudirira pigments uye mafirita kubva pakugara mupende yelatex. Inogona kuumba yakagadzikana colloidal system kuburikidza neyayo viscous mhinduro kugovera zvakaenzana chikamu chimwe nechimwe uye kuve nechokwadi chekuchengetedza kugadzikana kwepende. Panguva imwecheteyo, hydroxyethyl cellulose inogonawo kuvandudza kugadzikana kwe emulsion particles uye kudzivirira delamination uye agglomeration ye latex system panguva yekuchengetedza.
Kuvaka: Panguva yekuvaka, iko kukora uye kudzosa mhedzisiro yehydroxyethyl cellulose inoita kuti pendi yelatex ive yakanaka yekumisikidza uye yekumisa zvivakwa, izvo zvinogona kunyatso kudzikisa mabhurashi mamaki uye kunatsiridza kutsvedzereka kweiyo firimu rekuputira. Uye zvakare, nekuti hydroxyethyl cellulose inogona kuvandudza iyo thixotropy yepende, iyo latex pendi iri nyore kushanda panguva yekupenda, ine mvura yakanaka isina kudonha, uye inokodzera nzira dzakasiyana dzekuvaka, senge brushing, roller coating uye kupfapfaidza. .
3. Kunyatsoshandiswa kwekushandiswa kwehydroxyethyl cellulose mu latex pendi
Kuvandudza kugadzikana kwependi: Kuwedzera huwandu hwakakodzera hwehydroxyethyl cellulose kune latex pendi fomula inogona kuwedzera zvakanyanya anti-kugadzirisa zvimiro zvepende uye kudzivirira kuiswa kwe pigment uye mafirita. Kupararira kwehydroxyethyl cellulose mumachira kunogona kuchengetedza kufanana kweiyo coating system uye kuwedzera nguva yekuchengetedza yechigadzirwa.
Kuvandudza rheological zvimiro zvejasi: Iyo rheological zvimiro zve latex pendi yakakosha pakuvaka mhando. Hydroxyethyl cellulose inogona kushandisa yayo yakasarudzika thixotropy kuita kuti pendi ifambe zviri nyore pasi pesimba rakakura rekugera (senge kana kupenda), uye kuchengetedza viscosity yakakwira pasi pesimba rakaderera reshear (senge kana wakamira), kudzivirira Sag. Hunhu uhwu hunoita kuti latex pendi ive nani yekuvaka uye yekuputira mhedzisiro, kuderedza sagging uye rolling mamaki.
Kuvandudza maitiro ekuona uye emuviri zvimiro zveiyo firimu yekuputira: Hydroxyethyl cellulose inoita basa rakakosha mukuita firimu maitiro. Haikwanisi kungovandudza kutsetseka kwefirimu yepende, asiwo kuwedzera kupikisa kupfeka uye kushorwa kwemvura kwefirimu yepende, kuwedzera hupenyu hwebasa refirimu repende. Mukuwedzera, nekuda kwekuchengetwa kwayo kwemvura kwakanaka, chifukidzo chinoomesa zvakaenzana, zvichibatsira kudzivisa matambudziko akadai semakwinya, pinholes uye kuputika, zvichiita kuti pamusoro pekuputira kuve nyore.
Kuvandudzwa kwekuita kwezvakatipoteredza: Hydroxyethyl cellulose inobva kune yakasikwa cellulose, ine biodegradability yakanakisa, uye haizosvibisa nharaunda. Kana ichienzaniswa neyechinyakare synthetic thickeners, ine hushamwari kwezvakatipoteredza uye inosangana nezvinodiwa zvemazuva ano zvegirinhi zvekuvaka. Pamusoro pezvo, haina kuvhurika organic compounds (VOC), saka kushandisa hydroxyethyl cellulose mu latex pendi kunobatsira kuderedza kuburitswa kweVOC uye kunatsiridza mhepo yenzvimbo yekuvaka.
Sekuwedzera kwakakosha mupendi yelatex, hydroxyethyl cellulose inogona kuvandudza zvakanyanya mashandiro ekuvaka uye yekupedzisira coating mhedzisiro yependi yelatex kuburikidza nekukora kwayo kwakanakisa, kuchengetedza mvura, kugadzikana uye firimu-kugadzira zvivakwa. Panguva imwecheteyo, nekuda kwekuchengetedzwa kwayo kwezvakatipoteredza uye yakaderera VOC maitiro, hydroxyethyl cellulose inosangana neyakasvibira uye yezvakatipoteredza zvinodiwa zvemazuva ano ekupfeka indasitiri. Nekuenderera mberi kwekufambira mberi kwetekinoroji, tarisiro yekushandiswa kwehydroxyethyl cellulose mupende yelatex ichave yakakura, ichipa mhinduro dziri nani dzekusimudzira indasitiri yezvivakwa zvekupfeka.
Nguva yekutumira: Sep-20-2024