Hydroxyethyl cellulose (HEC) inoshanda zvakasiyana-siyana uye yakashandiswa zvakanyanya kukora mumiriri mupendi uye machira. Inoshanda akawanda mabasa, kuwedzera mashandiro, kugadzikana, uye kushandisa zvivakwa zvezvigadzirwa izvi. Pazasi pane gwara rakazara rekushandisa zvinobudirira hydroxyethyl cellulose mupendi uye machira, inovhara mabhenefiti ayo, nzira dzekushandisa, uye kufunga kwekugadzira.
Mabhenefiti eHydroxyethyl Cellulose muPaints uye Coatings
Rheology Kugadziridzwa: HEC inopa inodiwa kuyerera uye kuyera maitiro kune pendi uye machira, ichivabatsira kupararira zvakaenzana uye kuderedza sagging.
Kugadzikana Kuwedzera: Inogadzirisa emulsion uye inodzivirira kuparadzaniswa kwechikamu, kuve nechokwadi chekugoverwa kweyunifomu ye pigments uye fillers.
Kuvandudzwa Kwekushandisa Zvivakwa: Nekugadzirisa viscosity, HEC inoita kuti pendi ive nyore kuisa, ingave nebhurashi, roller, kana spray.
Kuchengeta Mvura: HEC ine yakanakisa kuchengetedza mvura zvivakwa, izvo zvakakosha pakuchengetedza kushanda kwependi uye machira, kunyanya mumamiriro akaoma.
Kugarisana: HEC inowirirana nehuwandu hwakawanda hwezvinonyungudutsa, pigment, uye zvimwe zvinowedzera, zvichiita kuti ive yakakodzera kune zvakasiyana-siyana.
Maitiro Okushandisa
1. Dry Blending
Imwe nzira yakajairika yekubatanidza HEC mukugadzira pendi ndeyekuoma kusanganisa:
Danho 1: Edza huwandu hunodiwa hweHEC hupfu.
Danho 2: Zvishoma nezvishoma wedzera HEC poda kune zvimwe zvakaoma zvikamu zvekugadzirisa.
Danho rechitatu: Ita shuwa kusanganisa kwakanyatso kusanganisa kuti udzivise kuputika.
Danho rechina: Zvishoma nezvishoma wedzera mvura kana kunyungudutsa uchisanganisa nguva dzose kusvikira HEC yazara hydrated uye homogeneous musanganiswa unowanikwa.
Dry blending inokodzera kuumbwa uko kunonyatso kudzora viscosity kunodiwa kubva pakutanga.
2. Kugadzirira Kugadzirisa
Kugadzira mhinduro ye stock yeHEC usati waisanganisa mukugadzira pendi ndeimwe nzira inoshanda:
Danho 1: Kuparadzira HEC poda mumvura kana chinonyungudutsa chinodiwa, kuve nechokwadi chekuenderera mberi kwekusagadzikana kudzivirira bundu kuumbwa.
Danho 2: Bvumira nguva yakakwana yekuti HEC inyatso hydrate uye inyunguduke, kazhinji maawa akati wandei kana husiku.
Nhanho 3: Wedzera iyi stock solution kune pendi yekugadzira uchikurudzira kusvika iyo inodiwa kuenderana uye zvivakwa zvawanikwa.
Iyi nzira inobvumira kubata nyore uye kubatanidzwa kweHEC, kunyanya mukugadzirwa kukuru.
Kufunga Kwekugadzirisa
1. Kuisa pfungwa pamwoyo
Iko kusungirirwa kweHEC kunodiwa mukuumbwa kwepende kunosiyana zvichienderana neinodiwa viscosity uye nzira yekushandisa:
Low-Shear Applications: Yebhurashi kana roller application, yakaderera yeHEC (0.2-1.0% nehuremu) inogona kukwana kuti iwane viscosity inodiwa.
Yakakwira-Shear Zvishandiso: Zvekupfapfaidza zvikumbiro, huwandu hwepamusoro (1.0-2.0% nehuremu) hunogona kudikanwa kudzivirira kudonha uye kuve nechokwadi cheatomization yakanaka.
2. pH Kugadzirisa
Iyo pH yekuumbwa kwepende inogona kukanganisa kunyungudika uye kuita kweHEC:
Optimal pH Range: HEC inonyanya kushanda mukusarerekera kune zvishoma alkaline pH range (pH 7-9).
Kugadziridza: Kana iyo maumbirwo akanyanya acidic kana yakanyanya alkaline, gadzirisa iyo pH uchishandisa akakodzera ekuwedzera senge ammonia kana organic acids kuti uwedzere kushanda kweHEC.
3. Tembiricha
Tembiricha inoita basa rakakosha mu hydration uye kuparadzwa kweHEC:
Cold Water Soluble: Mamwe mamakisi eHEC akagadzirirwa kunyungudika mumvura inotonhora, izvo zvinogona kurerutsa maitiro ekusanganisa.
Kuwedzera Mvura Inodziya: Mune zvimwe zviitiko, kushandisa mvura inodziya kunogona kukurumidzira hydration process, asi tembiricha iri pamusoro pe60 ° C inofanira kudzivirirwa kudzivirira kuparara kwepolymer.
4. Kuenderana Nezvimwe Zvisungo
HEC inofanirwa kuenderana nezvimwe zvinongedzo mukugadzira kudzivirira nyaya senge gel kugadzirwa kana kupatsanurwa kwechikamu:
Solvents: HEC inowirirana nezvose-based-based and solvent-based systems, asi kutarisirwa kunofanira kutorwa kuti kuve nechokwadi chekuparara kwakakwana.
Pigment uye Fillers: HEC inobatsira kudzikamisa pigments uye mafirita, kuve nechokwadi chekugovera yunifomu uye kudzivirira kugadzirisa.
Zvimwe Zviwedzerwa: Kuvapo kwevanokonzera, vanoparadzanisa, uye zvimwe zvinowedzera zvinogona kukanganisa viscosity uye kugadzikana kweHEC-thickened formulation.
Mazano Anoshanda Ekushandisa Zvakakwana
Pre-Dissolution: Pre-dissolving HEC mumvura isati yawedzera kune pendi yekugadzira inogona kubatsira kuve nechokwadi chekugovera yunifomu uye kudzivirira clumping.
Slow Addition: Paunenge uchiwedzera HEC pakugadzirisa, ita izvi zvishoma nezvishoma uye nekuenderera mberi kwekusimudzira kudzivirira mapundu.
Yakakwira-Shear Kusanganisa: Shandisa yakakwirira-kuveura musanganiswa kana zvichibvira, sezvo ivo vanogona kubatsira kuwana yakawanda homogeneous musanganiswa uye nani viscosity control.
Kuwedzera Kugadziridza: Gadzirisa iyo HEC yekuwedzera zvakanyanya, kuyedza viscosity uye zvivakwa zvekushandisa mushure mekuwedzera kwega kwega kuti uwane iyo inodiwa kuenderana.
Matambudziko Anowanikwa uye Kugadzirisa Matambudziko
Lumping: Kana HEC yakawedzerwa nekukurumidza kana pasina kusanganiswa kwakakwana, inogona kugadzira mapundu. Kuti udzivise izvi, paradzira HEC mumvura zvishoma nezvishoma uchikurudzira nesimba.
Kusapindirana Viscosity: Kusiyana kwekushisa, pH, uye kusanganiswa kwekukurumidza kunogona kutungamirira kune kusingaenderani viscosity. Gara uchitarisa uye gadzirisa ma parameter aya kuti uchengetedze kufanana.
Kupupa: HEC inogona kuunza mweya mukugadzira, zvichitungamira mukupupa. Shandisa defoam kana anti-foaming agents kuderedza nyaya iyi.
Hydroxyethyl cellulose chinhu chakakosha mupende uye maumbirwo ekuputira nekuda kwekugona kwayo kuwedzera viscosity, kugadzikana, uye mashandisirwo ekushandisa. Nekunzwisisa nzira dzakakwana dzekubatanidza HEC, kugadzirisa maparamendi ekugadzirisa, uye kugadzirisa matambudziko akajairika, vagadziri vanogona kugadzira emhando yepamusoro, inowirirana, uye-inoshamwaridzika pendi zvigadzirwa. Kunyangwe kuburikidza neyakaoma kusanganisa kana kugadzirira mhinduro, kiyi iri mukunyatso kusanganisa, pH kugadzirisa, uye tembiricha kutonga kuti ikwidze zvizere mabhenefiti eHEC.
Nguva yekutumira: May-28-2024